identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
463687B7FF96FFE3F2E5FC91D8D1B4B1.text	463687B7FF96FFE3F2E5FC91D8D1B4B1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dichelonyx magnesae McPeak and Lago 2020	<div><p>Dichelonyx magnesae McPeak and Lago, new species</p> <p>Zoobank.org/ urn:lsid:zoobank.org:act: DE31A932-046B-4DAD-BC07-3B71F9250954 (Figs. 1–10)</p> <p>Type Material. 66♂, 128♀. Holotype labeled: a) “ USA:CA: San Diego Co., / <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=-116.74875&amp;materialsCitation.latitude=33.32645" title="Search Plazi for locations around (long -116.74875/lat 33.32645)">Aguanga Mtn.</a> / 4.2 mi W Hwy 79 on / 9S07 <a href="http://tb.plazi.org/GgServer/search?materialsCitation.longitude=-116.74875&amp;materialsCitation.latitude=33.32645" title="Search Plazi for locations around (long -116.74875/lat 33.32645)">Rd</a>, 4200’, BL &amp; MV”; b) “ 33°19.587’N, 116°44.925’W / 14-15 June 2012, leg. R. H. / McPeak &amp; R. A. Cunningham ”; c) on red paper, “ HOLOTYPE / Dichelonyx magnesae / McPeak &amp; Lago” (1♂ CASC) (Fig. 1). Allotype female labeled as holotype except for c) on red paper “ ALLOTYPE / Dichelonyx magnesae / McPeak &amp; Lago” (1♀ CASC). Paratypes, each with our yellow paratype label: 43♂ and 92♀ with same label data as holotype (2♂, 2♀ CASC; 2♂, 2♀ CSCA; 2♂, 2♀ AVEC; 2♂, 2♀ EMEC; 2♂, 2♀ FSCA; 2♂, 2♀ LACM; 2♂, 2♀ OJSM; 2♂, 2♀ PKLC; 8♂, 25♀ RACC; 7♂, 39♀ RHMC; 2♂, 2♀ SBMNH; 2♂, 2♀ SDNHM; 2♂, 2♀ TAMU; 2♂, 2♀ UCDC; 2♂, 2♀ WBWC; 2♂, 2♀ WFBM); 15♂ with label data same as holotype, except a) “blacklight”; b) “ 5 July 1992, R. H. McPeak ” (2♂ CASC; 8♂ RHMC; 5♂ SDNHM); 2♂ labeled “ Lake Henshaw / San Diego Co., CA / V-25-92, At light / W. F. Chamberlain” (2♂ TAMU); 1♀ labeled “CA: San Diego Co., / Warners, / VI/25/1925 ” (1♀ CASC); 1♀ labeled “CA: San Diego Co. / 1.5 mi W. of Warner / Springs on Hwy 79 / 2900’ VII-5-92 / R. H. McPeak ” (1♀ RHMC); 1♀ labeled “CALIF: San Dgo. Co. / 7 mi. NNW Warners / Sprs, Indian Flats / Campgd., VIII- 20-76 / P. Rude collector”; b) “ Adenostoma ” (1♀ EMEC); 1♂, 2♀ labeled “ Pine Valley / San Diego Co, Calif / VI/28/86 / R. H. McPeak ” (1♂, 2♀ RHMC); 1♂ labeled “ USA:CA: San Diego Co. / Buckman Springs. Rd., / 1.5 km S Cottonwood / Crk.; 32.706°, -116.490° / June 17, 2017; at UV / light; W. B. Warner ” (1♂ WBWC); 22♀ labeled “ Bautista Canyon / 7 mi. SE Hemet / Riv. Co. Calif. / 23-June-1970 ”; b) “Black lite / J. Saulnier ” (5♀ RACC, 17♀ RHMC); 2♀ labeled “ Bautista Canyon / 7 mi. SE Hemet / Riv. Co., Calif. / 23-June-1985 ”; b) “ R. A. Cunningham coll.” (2♀ RACC); 4♀ labeled “ Bautista Canyon / 13 mi. S. San Jacinto / Riverside Co., Calif. / VI/27/1972 / S. Bennett ” (4♀ RHMC); 2♂ labeled “ Coahilla Mtn. Trail / San Bern. Nat. Forest / Riverside Co. Calif. / VII/3/1972 / S. Bennett ” (2♂ RHMC); 1♀ labeled “ MEXICO: Baja Calif / 12 mi E Catavi ~na / 4 VI 1997 / light sheets”; b) “ William D. Shepard leg.” (1♀ RHMC); 1♀ labeled “ MEXICO: Baja Calif. / Mike’ s Sky Rancho / 3 VI 1997 / light sheets”; b) “ William D. Shepard leg.” (1♀ RHMC); 1♂ labeled “ MEX., BajaCalif. N, Sierra / Juarez 5 mi. N La / Huerta, VI-9-70 / E. L. Sleeper collr.”; b) “California State / Univ. Long Beach / 1996 donation to / Calif. Acad. Sci.” (1♂ CASC).</p> <p>Description. Holotype male. Length 7.4 mm. Head and pronotum medium brown; elytra paler, yellowish brown or testaceous with light green luster (Fig.2). Dorsum and venter setose, setae golden-yellow dorsally, light yellow ventrally, with density varying from sparse to dense, glabrous patches present on vertex, pronotum, elytra, and mesosternum. Head: Clypeus strongly reflexed, anterior angles broadly rounded, anterior margin truncate, lateral margins divergent to base; surface densely and coarsely punctate; frontoclypeal suture sinuate, with the center extending farther posteriorly than the lateral arms. Clypeus and head uniformly covered with dense, posteriorly directed, prostrate setae, except for a broad, glabrous, impunctate triangle on vertex (Figs. 3–4). Antenna testaceous or slightly infuscate, with 9 antennomeres, club approximately same length as funicle. Maxillary palpus testaceous or slightly infuscate, terminal segment nearly cylindrical, base and apex abruptly narrowed. Pronotum: Lateral margins obtusely angulate at apical 1/3, edges straight, shallowly crenulate before and after angulation; anterior angles nearly 90°, posterior angles obtuse but apparent; midline vaguely depressed (sulcus), more heavily punctate than adjacent smooth areas; disc in lateral half and along apical and basal margins densely punctate and setose, setae obscuring surface. Disc with 2 more or less rectangular, mostly glabrous, finely and sparsely punctate maculae on either side of midline. Scutellum densely setose. Elytra: Color primarily testaceous, with light metallic green reflections; suture, base, and portions of lateral margins infuscate, infuscation narrowly outlining scutellum, extending across anterior face of humeral umbone and lateral margin under and slightly behind umbone; setae recumbent, much sparser than pronotum, most numerous mesad of a line drawn from humeral to apical umbones, without bare costae (not vittate); laterally, setae shorter, semi-erect, and less obvious (Fig. 5). Discal costae vaguely indicated. Venter: Meso- and metathoraces and abdominal sternites covered with light yellow (appearing light gray because of dark integument beneath), plumose, scale-like setae. Metacoxae, metepisternum, mesepisternum, anterior region of proepimera, pygidium, and posterior 2/3 of propygidium very densely setose. Metasternum densely setose on lateral thirds, but central disc nearly glabrous except for a few suberect, simple setae. Proepimeron setose anteriorly, with transverse glabrous area posteriorly. Legs: Testaceous. Metatibial spurs unequal in length, with short spur 0.7× length of long spur; both spurs rather narrow with base slightly enlarged, longer spur parallel-sided, gently curved, narrowly rounded apically; shorter spur narrowed from base to apex. Genitalia: Parameres typical for genus; in lateral view, dorsum slightly angulate, apical lobes relatively robust, with down-curved, acute apices (Fig. 6). Internal sac without sclerites.</p> <p>Allotype Female. Length 8.4 mm. Anterior clypeal angles broadly rounded and lateral margins divergent at base (Figs. 7–9). Antennal club about half length of funicle. Coloration similar to male, except glabrous areas of pronotum larger with better defined borders, narrowly infuscate margins of elytra slightly more extensive across anterior margin and under humeral umbone, lateral marginal bead of elytra infuscate along entire length (Fig. 10). Elytral pubescence similarly distributed, but obviously shorter, area between discal patch and outer setose interval with short “microsetae,” barely longer than diameter of punctures from which they emerge. Abdomen robust, convex ventrally in profile, rather than flattened or concave as is characteristic of males. Other external characters similar to male.</p> <p>Variation. Dichelonyx magnesae males range from 6.9 to 8.3 mm in length, while females range from 7.7 to 8.9 mm. In typical (most common) specimens and darkest specimens, the two large, impunctate, glabrous rectangles on either side of the depressed pronotal midline (sulcus) are dark reddish brown or piceous, with the densely punctate medial depression, anterior, posterior, and lateral areas setose and light reddish brown (color differences may be difficult to see on densely setose individuals). In pale specimens, the pronotum may be uniformly light reddish brown. The maculae vary from completely bare to uniformly covered with sparse setae, but the areas are always distinct from the densely punctate, generally densely setose marginal areas. The shape of the maculae is variable,rectangular to rounded, sometimes coalescing anteriorly to form an inverted, cordate, unified macula.</p> <p>The darkened margins on the elytra usually extend from the lateral margin across the anterior face of the elytra, including irregular incursions on the base of the disc, along the lateral margins of the scutellum, and the complete length of the sutural intervals, but never including the dorsal surface of the humeral umbone. The darkest specimens may have the base more extensively, but unevenly, darkened, surpassing the tip of the scutellum medially by about the length of the scutellum, but not extending broadly along the suture. In addition, the lateral margins of the elytra may be darkened, including the anterior and lateral faces of the humeral umbone, anterior surfaces of the ninth costae, ninth interval, and marginal bead back to the level of the first or second sternite, and the lateral marginal bead may be darkened to the apex. The base color of the disc may be light reddish brown, but this is uncommon. In the palest specimens, most basal infuscations may be absent, with only the margins along the scutellum and extreme inner margins of the sutural intervals clearly darkened. Elytral setae are densely spaced over the entire surface in males and on the central disc in females (often missing apically, basally, and occasionally medially in females), generally not interrupted by glabrous costae. Rarely, males have the third costa vaguely visible through the setal coat.</p> <p>Natural History. A single specimen was taken on A. fasciculatum (chamise). All other specimens from San Diego County (161) were taken at blacklight or mercury vapor light in chaparral habitat. The most southerly specimen examined was labeled 12 mi. E of Catavi~na, Baja California, Mexico (Fig. 1). The habitat east of Catavi~na is Central Desert, dominated by several species of cacti, elephant trees, and boojum trees. We suspect that this specimen was mislabeled and is from another locality.</p> <p>Etymology. Dichelonyx magnesae is named in honor of Mary Agnes McPeak, wife of the first author. Mary was frequently called “Magnes” and the person who urged the first author to take a course in entomology taught by Dr. E. L. Sleeper. Her entomological urging resulted in a life-long interest in scarab beetles by the first author.</p> <p>Diagnosis. Males of D. magnesae are distinguished from D. bajaensis males by their rounded to broadly rounded anterior clypeal angles (Figs. 3–4); yellow or gold setae that are evenly distributed over the entire elytral surface or, occasionally, less dense on lateral third (Figs. 2, 5); third and fifth costae rarely glabrous, forming thin lines in discal setal patches; and parameres in lateral view with dorsum slightly angulate, apical lobes relatively robust, with down-curved, acute apices (Fig. 6). Males of D. bajaensis have anterior clypeal angles nearly 90 ⁰ (Figs. 11–13); elytra clearly vittate (Fig. 14) or not (Fig. 15); and parameres in lateral view slightly angulate dorsally, but angulation less evident than in D. magnesae, with down-curved, acute apices sharper than in D. magnesae (Fig. 16). Males of D. pusillus are distinguished from D. magnesae and D. bajaensis males by their typically uniform dark brown coloration and white or silvery white elytral setae that are generally distributed in distinct vittae, but occasionally not (Fig. 20).</p> <p>Females of D. magnesae are distinguished from those of D. bajaensis by the broadly rounded clypeal angles (Figs. 8–9) and typically testaceous elytra with the suture completely darkened but never expanded into a broad triangular area surrounding the scutellum (Fig. 7). Females of D. bajaensis have elytral coloration typically testaceous, with the suture completely darkened and expanded into a broad triangular or, rarely, rectangular area around the scutellum (Fig. 11). The clypeal angles of D. bajaensis are not broadly rounded as in D. magnesae (Figs. 18–19). Females of D. pusillus are distinguished from those of D. magnesae and D. bajaensis by the dark coloration and white or silvery white elytral setae (Fig. 25).</p> </div>	http://treatment.plazi.org/id/463687B7FF96FFE3F2E5FC91D8D1B4B1	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	McPeak, Ron H.;Lago, Paul K.;Hanley, Guy A.	McPeak, Ron H., Lago, Paul K., Hanley, Guy A. (2020): Two New Sulcate Species of Dichelonyx Harris (Coleoptera: Scarabaeidae: Melolonthinae: Dichelonychini) from Southern California, USA and Baja California, Mexico. The Coleopterists Bulletin 74 (1): 45-59, DOI: 10.1649/0010-065X-74.1.45, URL: http://dx.doi.org/10.1649/0010-065x-74.1.45
463687B7FF91FFEEF0FAFAF0DA3BB68C.text	463687B7FF91FFEEF0FAFAF0DA3BB68C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dichelonyx bajaensis McPeak and Lago 2020	<div><p>Dichelonyx bajaensis McPeak and Lago, new species</p> <p>Zoobank.org/ urn:lsid:zoobank.org:act: 5CC98646-67AD-4DF4-9398-1D27E28F798F (Figs. 1, 11–19)</p> <p>Type Material. 21♂, 13♀. Holotype labeled: a) “B. CALIF. N., / Sa. Juarez 13.5 mi. / S El Rayo”; b) “ E. L. Sleeper / Collr. VI-8-70”; c) “California State / Univ. Long Beach / 1996 donation to / Calif. Acad. Sci.” (1♂ CASC) (Fig. 1). Allotype female labeled as holotype (1♀ CASC). Paratypes, each with our yellow paratype label: 3♂, 5♀ with same label data as holotype (3♂, 5♀ CASC); 2♂, 2♀ labeled “B. CALIF. N. / 2.2 mi. S / El Topo VI-6-70”; b) “ E. L. Sleeper / Collr.”; c) “California State / Univ. Long Beach / 1996 donation to / Calif. Acad. Sci.” (2♂, 2♀ CASC); 2♂, 2♀ labeled “B. CALIF. N., / Sa. Juarez 3.6 mi / SE El Rayo”; b) “ E. L. Sleeper / VII-2-60 Collr.”; c) “California State / Univ. Long Beach / 1996 donation to / Calif. Acad. Sci.” (2♂, 2♀ CASC); 8♂, 1♀ labeled “ MEXICO: BajaCal. Norte / Sierra Juarez, 3 mi. / S. of Mexicali-Tecate / Hwy. along road to”; b) “El Topo Ranch 20-VI- / 1973 S. C. Williams &amp; / K. B. Blair CSW # 313” (8♂, 1♀ CASC); 1♂, 1♀ labeled “ MEX., BajaCalif. N, Sierra / Juarez 5.7 mi. N Rosa / del Castilla, VI-10-70 / E. L. Sleeper Collr. ”; b) “California State / Univ. Long Beach / 1996 donation to / Calif. Acad. Sci.” (1♂, 1♀ CASC); 1♂ labeled “B. CALIF. N. / 10 mi. E San / Jose Castillo”; b) “Blacklight”; c) “ E. L. Sleeper / Collr.” d) “California State / Univ.Long Beach / 1996 donation to / Calif. Acad. Sci.” (1♂ CASC); 3♂, 1♀ labeled: “CA: San Diego / Boulevard / at light, VI-9- 94 / R. H. McPeak. ” (2♂, 1♀ RHMC; 1♂ PKLC).</p> <p>Description. Holotype male. Length 6.2 mm. Clypeus light brown, frons and vertex dark reddish brown; pronotum similarly bicolored, glabrous rectangles on either side of midline dark reddish brown, midline and all marginal areas light brown; elytra primarily yellowish brown or testaceous, with suture, broad, triangular area surrounding scutellum, base across anterior face of humeral umbone, and lateral marginal bead infuscate (Fig. 11). Dorsum and venter covered with sparse to dense, recumbent setae; vertex, pronotal disc laterad of midline, and central metasternum glabrous and shiny. Head: Clypeus strongly reflexed, anterior angles narrowly rounded; en face, anterior margin truncate (Figs. 12–13): viewed from above and behind, anterior angles prominent with anterior margin concave between them, lateral margins nearly straight, parallel to base; surface densely and coarsely punctate; fronto-clypeal suture sinuate, arcuate posteriorly in middle. Clypeus and head covered with dense, posteriorly directed, prostrate, golden-yellow setae, except vertex glabrous and distinctly punctate laterally, impunctate medially. Antennae testaceous, with 9 antennomeres, club approximately same length as funicle. Maxillary palpi testaceous or light brown, terminal segment nearly cylindrical, base and apex narrowed. Pronotum: Lateral margins obtusely angulate just before mid-length, straight and coarsely but shallowly crenulate before and after angulation; anterior angles slightly obtuse, posterior angles broadly obtuse but evident; midline vaguely depressed; rectangular areas on either side of midline glabrous, slightly raised, with scattered fine punctures and few sparse setae. Apical and basal regions, depressed midline, and lateral thirds densely punctate and covered with light yellow or dirty white setae that obscure pronotal surface. Scutellum densely setose. Elytra: Color primarily testaceous, with suture, base, anterior face of humeral umbone, and lateral marginal bead dark brown to piceous, darkened areas exhibiting light metallic green reflections; recumbent setae dense in medial half of each elytron, sparse and scattered near base; 1 st discal costa apparent, slightly dividing setose field basally, becoming indistinct in apical half, other discal costae indistinct, except for distinct submarginal (9 th) costa; area between discal setose field and submarginal costa sparsely covered with short setae, appearing nearly glabrous in middle, space between submarginal costa and lateral margin with long, relative sparse setae; humeral umbone and irregular areas adjacent to scutellum glabrous, or nearly so (Figs. 11, 14–15). Venter: Meso- and metathoraces covered with white, recumbent setae. Metasternum densely setose on lateral thirds, with disc glabrous except for scattered suberect simple setae. Metacoxae, metepisternum, mesepisternum, lateral regions of proepimeron, pygidium, and posterior 2/3 of propygidium densely setose. Proepimeron setose anteriorly and posteriorly, but with transverse glabrous area beneath lateral angle. Legs: Testaceous. Metatibial spurs unequal in length with short spur 0.7× length of long spur; both spurs rather narrow, longer spur parallel-sided, narrowly rounded apically; shorter spur narrowed from base to apex. Genitalia: Parameres typical for genus, slightly angulate dorsally, angulation less evident than in D. magnesae, apically elongate lobes less robust in lateral view compared to those of D. magnesae, with down-curved, acute apices sharper than apices in D. magnesae (Fig. 16). Internal sac without sclerites.</p> <p>Allotype Female. Length 6.7 mm. Antennal club about 0.7× length of funicle. Anterior clypeal angles rounded and lateral margins divergent at base (Figs. 17–19). Coloration similar to male, except glabrous areas of pronotum larger and bearing scattered setae basally and apically, infuscated triangle surrounding scutellum more extensive than in male (Fig. 17), humeral umbone with infuscate streak extending posteriorly about 1/3 elytral length, lateral marginal bead not infuscate. Elytral pubescence similarly distributed but shorter than in males, area between discal patch and outer setose interval apparently glabrous, but actually with short microsetae. Abdomen robust, convex ventrally in profile, rather than concave as is characteristic of males. Other external characters similar between the sexes.</p> <p>Variation. Dichelonyx bajaensis males range from 6.0 to 7.8 mm in length, while females range from 5.7 to 8.0 mm. Typical specimens have bicolored pronotum and elytra. The glabrous rectangles on either side of the depressed pronotal midline are dark reddish brown or piceous, with the densely punctate medial depression, and anterior, posterior, and lateral areas setose and light reddish brown (color differences may be difficult to see on densely setose individuals). The “glabrous” rectangles vary from completely bare to uniformly covered with sparse setae, but the rectangles are always easily distinguished from the heavily punctate, densely setose midline and marginal areas. Unlike the condition seen in D. magnesae, uniformly brown individuals are common, and these show no difference in color between the different areas on the pronotum.</p> <p>Like typical specimens of D. magnesae, the elytra of D. bajaensis are usually testaceous with darkened margins, the latter usually extending from the lateral margin across the anterior face of the humeral umbone, then invading the disc as a broad macula on either side of the scutellum and narrowing to the sutural interval just short of the midpoint of the elytra (rarely less than 3× length of scutellum). The margins of the macula are variable, sometimes projecting apically along the third costa, resulting in a somewhat rectangular appearance. The complete length of the sutural intervals is darkened, the lateral margins darkened to varying degrees, from a short line under the humeral umbone to broadly infuscate nearly to the apex. Brown individuals, both males and females, show considerable variation in coloration, but all lack the triangular elytral macula. Some are uniformly light brown on the pronotum and elytra, lacking elytral maculae and infuscate margins, or they may have the sutural intervals lightly infuscate. Others have the pronotum and lateral and sutural margins darker than the elytral disc. Eighteen of 34 specimens examined were brown and lacked elytral maculae. In general, elytral setae are white, densely spaced medially (often missing apically and basally), without evidence of exposed costae, and mostly absent on lateral thirds in both sexes. Occasional individuals have the third costa (first costa apparent after sutural costa) glabrous in the basal half or intermittently bare for entire length. Fewer specimens have the third and fifth costae bare, or nearly so, for their entire length.</p> <p>Natural History. Specimens of D. bajaensis were collected in chaparral habitat in Baja California, Mexico and San Diego County, USA. The species composition of chaparral varies depending on slope, aspect, and elevation. Chamise and red shank (Adenostoma sparsifolium Torrey) are widely present, accompanied by a mixture of Ceanothus L. (Rhamnaceae), Arctostaphylos Adans. (Ericaceae), and Quercus L. (Fagaceae). Specific data for the specimens collected in Baja California are not known. The four specimens collected at Boulevard, San Diego County, were taken at light.</p> <p>Etymology. The first specimens of D. bajaensis discovered in the California Academy of Science collection are from Baja California, Mexico. The specific epithet recognizes the area of collection.</p> <p>Diagnosis. Dichelonyx bajaensis is distinguished from D. magnesae and D. pusillus in the diagnosis for D. magnesae.</p> </div>	http://treatment.plazi.org/id/463687B7FF91FFEEF0FAFAF0DA3BB68C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	McPeak, Ron H.;Lago, Paul K.;Hanley, Guy A.	McPeak, Ron H., Lago, Paul K., Hanley, Guy A. (2020): Two New Sulcate Species of Dichelonyx Harris (Coleoptera: Scarabaeidae: Melolonthinae: Dichelonychini) from Southern California, USA and Baja California, Mexico. The Coleopterists Bulletin 74 (1): 45-59, DOI: 10.1649/0010-065X-74.1.45, URL: http://dx.doi.org/10.1649/0010-065x-74.1.45
463687B7FF9BFFE9F0CCFF2FDBFBB389.text	463687B7FF9BFFE9F0CCFF2FDBFBB389.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dichelonyx pusillus (LeConte 1856)	<div><p>Dichelonyx pusillus (LeConte, 1856)</p> <p>(Figs. 20–26)</p> <p>Dichelonycha [sic] pusilla LeConte 1856: 282.</p> <p>Specimens of this species are typically uniformly dark brown, occasionally with the central elytral disc paler brown. The anterior clypeal angles of males (Figs. 20–22) and females (Figs. 23–24) are slightly rounded, with the lateral margins slightly divergent to the base. The pronotum is unicolored. The elytral setae are white or silvery white and generally distributed from margin to margin, but never densely spaced, often vittate, with third, fifth, seventh, and ninth costae glabrous (Fig. 25). The glabrous lines are generally more than half as wide as the setal bands. In some specimens, the setae are more evenly distributed, and the vittae are not at all apparent, but in these cases, the relatively sparse distribution of setae, along with the general dark coloration, is distinctive. The parameres are typical for genus, slightly angulate dorsally, with apically elongate lobes as robust in lateral view as those of D. magnesae or more so, with down-curved acute apices (Fig. 26). The internal sac lacks sclerites.</p> <p>Dichelonyx pusillus occurs widely in the southern half of California. The species has also been taken in western Nevada and in Baja California, Mexico (Cornell 1971). The two new species occur sympatrically with D.pusillus only in the southern portion of its range.</p> </div>	http://treatment.plazi.org/id/463687B7FF9BFFE9F0CCFF2FDBFBB389	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	McPeak, Ron H.;Lago, Paul K.;Hanley, Guy A.	McPeak, Ron H., Lago, Paul K., Hanley, Guy A. (2020): Two New Sulcate Species of Dichelonyx Harris (Coleoptera: Scarabaeidae: Melolonthinae: Dichelonychini) from Southern California, USA and Baja California, Mexico. The Coleopterists Bulletin 74 (1): 45-59, DOI: 10.1649/0010-065X-74.1.45, URL: http://dx.doi.org/10.1649/0010-065x-74.1.45
463687B7FF9BFFE9F129FC3BDB48B5CF.text	463687B7FF9BFFE9F129FC3BDB48B5CF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dichelonyx vicinus (Fall 1901)	<div><p>Dichelonyx vicinus (Fall, 1901)</p> <p>(Fig. 27)</p> <p>Dichelonycha [sic] vicina Fall 1901: 291.</p> <p>Dichelonyx vicinus is the largest sulcate Dichelonyx species in southern California, ranging from 8.5 to 13.7 mm in length (Fig. 27). This species occurs at higher elevations (1,374–1,893 m in San Diego County), where adults eat needles of several species of conifers (Fall 1901). Specimens are frequently collected at light. It is readily distinguished from other sulcate species occurring in the area by its large size and bright metallic green or blue elytra. The species is common in San Diego County and presumably occurs in Baja California where similar coniferous habitats exist.</p> </div>	http://treatment.plazi.org/id/463687B7FF9BFFE9F129FC3BDB48B5CF	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	McPeak, Ron H.;Lago, Paul K.;Hanley, Guy A.	McPeak, Ron H., Lago, Paul K., Hanley, Guy A. (2020): Two New Sulcate Species of Dichelonyx Harris (Coleoptera: Scarabaeidae: Melolonthinae: Dichelonychini) from Southern California, USA and Baja California, Mexico. The Coleopterists Bulletin 74 (1): 45-59, DOI: 10.1649/0010-065X-74.1.45, URL: http://dx.doi.org/10.1649/0010-065x-74.1.45
463687B7FF9BFFE8F095FA52DDFCB5FB.text	463687B7FF9BFFE8F095FA52DDFCB5FB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dichelonyx	<div><p>KEY TO THE SPECIES OF DICHELONYX WITH LONGITUDINAL PRONOTAL SULCI AND FROM SOUTHERN CALIFORNIA, USA AND BAJA CALIFORNIA, MEXICO</p> <p>1. Elytra bright metallic green or blue; length 8.5–13.7 mm (Fig. 27).................................................... Dichelonyx vicinus (Fall)</p> <p>1 ʹ. Elytra testaceous (Fig. 2) to dark brown (Fig. 14), either lacking metallic sheen or with light yellowish green reflections; length generally less than 8.5 mm (specimens of D. pusillus may reach 9.0 mm, but these are never bright metallic green)..................................... 2</p> <p>2. Males; abdomen flattened in lateral view, apical 2 segments slightly concave ventrally; antennal club relatively long, subequal to length of funicle (Fig. 2)....................... 3</p> <p>2 ʹ. Females; abdomen convex ventrally; antennal club shorter, about half length of funicle (Fig. 7).............................................. 5</p> <p>3. Anterior clypeal margin truncate to slightly concave (most easily seen at an angle from above and behind the head), anterior angles nearly 90° (Figs. 12–13), narrowly rounded; lateral margins straight and parallel. Elytra not clearly vittate or vittate (Figs. 14–15). Typically, impunctate areas on pronotal disc dark brown, punctate areas testaceous, elytral disc testaceous, with suture, large triangular area surrounding scutellum, and anterior margin in front of humeral umbone infuscate, darkened areas showing metallic green reflections (some specimens fairly uniform brown with infuscate margins, but clypeal shape remains distinctive) (Fig. 11)……………… Dichelonyx bajaensis McPeak and Lago, new species</p> <p>3 ʹ. Anterior clypeal margin truncate to convex (most easily seen at an angle from above and behind the head), anterior angles slightly rounded to broadly rounded (Figs. 3–4, 21–22); lateral margins slightly to strongly converging anteriorly. Elytra vittate or not, dorsal coloration testaceous to dark brown............................................................ 4</p> <p>4. Elytra vittate, with longitudinal stripes of white or silvery, recumbent or semierect, coarse setae; costae glabrous or nearly so, often wide, nearly half to 2/3 as wide as setal stripe (Fig. 20). Dorsal coloration brown, typically unicolored, but occasionally central elytral disc lighter, rarely only elytral margins infuscate, generally without light yellowish green metallic reflections.......................................... Dichelonyx pusillus (LeConte)</p> <p>4 ʹ. Elytra without distinct vittae, discal setae fine and dense, yellow or gold, evenly distributed over entire surface, or less dense on lateral third (Figs. 2, 5); rarely 3 rd and 5 th costae glabrous, forming thin lines in discal setal patches, but these lines not more than 20% as wide as patches of setae and usually not visible beyond 2/3 elytral length. Dorsal coloration usually bicolored; glabrous patches on pronotum light to dark brown (Fig. 2), punctate areas usually lighter; elytra testaceous (rarely light brown), with suture, anterior margin, and lateral area under humeral umbone darkened (Fig. 2) (occasionally, lateral margin darkened to level of apical umbone; in palest individuals, only suture infuscate); all darkened areas may be expanded slightly in darkest specimens, darkened areas and entire elytral disc with light metallic reflections ……………………… Dichelonyx magnesae McPeak and Lago, new species</p> <p>5. Elytra unicolorous, medium to dark brown, or with margins slightly darker than disc; pronotum unicolorous dark brown. Elytra vittate, with longitudinal stripes of white or silvery, recumbent or semierect, rather sparse, coarse setae; costae glabrous or nearly so, often wide, nearly half as wide as setal stripe…………… …………… Dichelonyx pusillus (LeConte)</p> <p>5 ʹ. Elytra usually testaceous with suture and anterior margins very dark; pronotum with impunctate areas on either side of midline medium to dark brown, with midline and punctate lateral areas paler (surface often obscured by thick setal coat). Elytra usually not vittate, discal setae mostly recumbent, dense, often restricted to disc mesad of a line from humeral umbone to apical umbone; occasionally, 3 rd and 5 th costae glabrous, thus stripes of setae become apparent, but glabrous lines very thin, not exceeding 20% of setal patch width; discal setae may be absent or nearly so............................................ 6</p> <p>6. Elytra typically testaceous, with suture completely darkened and expanded into a long, broad triangular area surrounding scutellum extending from near midpoint of elytra to inside humeral umbones (rarely, “triangle” is more like a rectangle), darkened area continuing across anterior face of elytra to lateral margin, which may be light or broadly darkened to the level of the apical umbone (dark, rather uniformly brown specimens are not uncommon); elytral disc generally covered with setae mesad of a line extending from humeral to apical umbones; clypeal margin nearly truncate when viewed from angle from above and behind, depth of recurved face uniform from side to side; setae on dorsal surfaces whitish …………………… ………………………… Dichelonyx bajaensis McPeak and Lago, new species</p> <p>6 ʹ. Elytra typically testaceous with suture completely darkened, but never expanded into a long, broad, triangular area around scutellum, instead, base of elytra broadly darkened along scutellum and across anterior face of elytra to lateral margin, which may be pale or broadly darkened for 2/3 elytral length; occasional specimens uniformly light brown, but at least elytral sutural margin infuscate; elytral disc often nearly glabrous or inconspicuously setose; clypeal margin broadly rounded (viewed from angle from above and behind), recurved face deepest medially, shorter at sides; setae on dorsal surfaces, particularly on pronotum, yellow or golden …… Dichelonyx magnesae McPeak and Lago, new species</p></div> 	http://treatment.plazi.org/id/463687B7FF9BFFE8F095FA52DDFCB5FB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	McPeak, Ron H.;Lago, Paul K.;Hanley, Guy A.	McPeak, Ron H., Lago, Paul K., Hanley, Guy A. (2020): Two New Sulcate Species of Dichelonyx Harris (Coleoptera: Scarabaeidae: Melolonthinae: Dichelonychini) from Southern California, USA and Baja California, Mexico. The Coleopterists Bulletin 74 (1): 45-59, DOI: 10.1649/0010-065X-74.1.45, URL: http://dx.doi.org/10.1649/0010-065x-74.1.45
