identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
86DF35825AE95AA98011D724D150FD24.text	86DF35825AE95AA98011D724D150FD24.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Agraphydrus dapengensis Yang & Jia 2021	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Agraphydrus dapengensis Yang &amp; Jia sp. nov. Figs 1A, B; 3; 7A </p>
            <p>Type locality.</p>
            <p>China, Guangdong Province, Shenzhen, Dapeng Penisula.</p>
            <p>Material examined.</p>
            <p>
                  Holotype: male (SYSU);  
                <a title="Search Plazi for locations around (long 114.52334/lat 22.508888)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=114.52334&amp;materialsCitation.latitude=22.508888">Guangdong Province</a>
                 , Shenzhen, beside  Nan’ao highway; 22°30'32"N, 114°31'24"E, 4.viii.2019, Fenglong Jia, Zuqi Mai leg.  Paratypes: (3 exs., IZCAS, SYSU): same data as holotype . 
            </p>
            <p>Diagnosis.</p>
            <p> This species is distinguished from other species of  Agraphydrus by the following combination of characters: labrum, clypeus and frons black; preocular patches indistinct; head without microsculpture; maxillary palpi with apical palpomere about 1.5  × as long as penultimate, palpomere 4 without apical infuscation; antennae with eight antennomeres; elytra with four rows of systematic punctures; mesofemora pubescent in about basal 2/3, pubescence restricted to a narrow anterior margin and posterior strip on metafemora; aedeagus with parameres is about 1.5  × as long as phallobase, corona located in middle position; parameres with cuspidal, hook-like subapical protrusion. </p>
            <p>Description.</p>
            <p> Form and color. Total length: 1.7-1.9 mm; elytral width: 0.9-1.0 mm; E.I.:1.2-1.3, P.I.:2.19-2.38, elytra ca. 2.8-3.15  × as long as pronotum. Body broad and oval, weakly convex dorsally. Labrum, clypeus and frons black, clypeus with weakly light brown preocular patches laterally, smaller than eyes; maxillary palpi unicolored yellow, pronotum dark brown with moderate wide reddish-brown lateral margin; elytral black with narrow reddish-brown margin; ventrites black; femora and tibiae dark reddish-brown, tarsomeres yellow brown. </p>
            <p> Head. Labrum with dense, fine punctures, without microsculpture. Clypeus (Fig. 3A) with angularly excised anterior margin, without microsculpture, ground punctures as on the labrum, interspaces 2-4  × as large as punctures, systematic punctures distinct; ground punctures on frons as on clypeus, systematic puncture distinct. Eyes large, not protruding. Antennae (Fig. 3B) with eight antennomeres. Maxillary palp (Fig. 3C) about as long as pronotum in midline, 0.75-0.84  × as long as maximum width of clypeus; length ratio palpomere 4:3 =1.27-1.31, palpomere 4 asymmetrical. Mentum (Fig. 3D) with several fine punctures on lateral portions, without microsculpture. </p>
            <p> Thorax. Pronotum ca. 2  × as wide as long, pronotal ground punctures as on frons, surface between ground punctures without microsculpture, systematic punctures distinct, forming a row in the anterolateral and located lateral middle position of the clypeus, each with a long seta. Elytral ground punctation as on head and pronotum, surface between ground punctures as on pronotum; with four distinct rows of systematic punctures, mesal rows of systematic punctures reaching anterior margin. Prosternum slightly convex, without carina medially, with a transverse groove. Mesoventrite (Fig. 3E) with moderate bulge, abruptly declining posteriorly, with horizontal ridge posteriorly. Metaventrite with distinct mesal convexity, bearing a small glabrous area posteromedial part. </p>
            <p>Legs. Pubescence present on proximal 2/3 of profemora (Fig. 3G) with oblique hairline, on about half of mesofemora (Fig. 3H) with straight hairline, restricted to a narrow anterior strip on the basal half of metafemora (Fig. 3I).</p>
            <p>Abdomen. Ventrite 5 (Fig. 3F) without apical emargination.</p>
            <p> Aedeagus (Fig. 7A). Length: 0.53mm. Phallobase about 2/3  × as long as the parameres, manubrium wide at base, about third of the width of phallobase, apex handle shape. Parameres wide at the base, margin narrowing apicad; apex obliquely, with cuspidal, hook-like subapical protrusion and with strong constriction in the apical 1/4; middle margin slight sigmoid-shape. Basal protrusion extending into 1/5 of the phallobase. Median lobe wide at the base, strongly narrowing toward apex; apex dentiform, almost as long as the parameres, corona moderately large, located in middle position; basal apophyses long, vertical, barb shape, almost reaching half of phallobase. </p>
            <p>Etymology.</p>
            <p>This species is named after the type locality, Dapeng Peninsula, Shenzhen, Guangdong Province.</p>
            <p>Distribution.</p>
            <p>Only known from type locality.</p>
            <p>Remark.</p>
            <p> This species shares similar dorsal coloration, maxillary palpi unicolorous yellow, mesoventrite with strong mesal bulge and similar aedeagus with  A. activus Komarek &amp; Hebauer and  A. anhuianus Hebauer, but differs from them by its clypeus without small median notch, antennae with eight antennomeres, pubescence restricted to a narrow anterior strip on the basal half of metafemora, phallobase moderately long and the lateral margin of parameres slightly curved (phallobase short in  A. activus and  A. anhuianus , the lateral margin of parameres straight in proximal 3/4 in  A. activus and lateral margin slightly sinuate in proximal 3/4 in  A. anhuianus ). It shares maxillary palpi unicolorous yellow, mesoventrite with distinct mesal bulge and metafemoral pubescence restricted to anterior margin or absent with  A. longipalpus (Jia) and  A. calvus Komarek &amp; Hebauer, but differs from them by parameres with hook-like subapical protrusion and median lobe with corona located in middle position (parameres without hook-like subapical protrusion, median lobe with corona located in basal position, crescentic sclerotized structure existing in  A. longipalpus ; parameres without hook-like subapical protrusion, median lobe with corona situated in distal to midlength, shield-shaped sclerotized structure existing in  A. calvus ). </p>
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	https://treatment.plazi.org/id/86DF35825AE95AA98011D724D150FD24	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.		Pensoft via Plazi	Yang, Zhen-ming;Jia, Fenglong;Jiang, Lu;Guo, Qiang	Yang, Zhen-ming, Jia, Fenglong, Jiang, Lu, Guo, Qiang (2021): Four new species of Agraphydrus Regimbart, 1903 with additional faunastic record from China (Coleoptera, Hydrophilidae, Acidocerinae). Deutsche Entomologische Zeitschrift 68 (1): 189-205, DOI: http://dx.doi.org/10.3897/dez.68.66200, URL: http://dx.doi.org/10.3897/dez.68.66200
7207B547081750D6A276E84D147BA280.text	7207B547081750D6A276E84D147BA280.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Agraphydrus komareki Yang & Jia 2021	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Agraphydrus komareki Yang &amp; Jia sp. nov. Figs 1C, D; 4; 7B </p>
            <p>Type locality.</p>
            <p>China, Guangdong Province, Taishan County, Shangchuan Island.</p>
            <p>Material examined.</p>
            <p>
                  Holotype: male (SYSU),  
                <a title="Search Plazi for locations around (long 112.86083/lat 21.77)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=112.86083&amp;materialsCitation.latitude=21.77">Guangdong Province</a>
                 , Taishan, shangchuan island, Rhesus monkey provincial national nature reserve, ca 21°46'12"N, 112°51'39"E, 10m a.s.l., 19.I.2019, Fenglong Jia &amp; Zu-long Liang leg.  Paratypes (13 exs., IZCAS, SYSU): same data as holotype . 
            </p>
            <p>Diagnosis.</p>
            <p> This species is distinguished from the other species of  Agraphydrus by the following combination of characters: Labrum, clypeus and frons black; preocular patches present; clypeus entirely microsculptured; maxillary palpi with apical palpomere about 1.5-1.6  × as long as penultimate, palpomere 4 without apical infuscation; antennae with eight antennomeres; elytra with four systematic punctures; meso- and metafemora pubescent in about basal 3/4; aedeagus with median lobe wider than parameres, corona large, located at basal third; parameres with indistinct subapical constriction. Differs from  A. gracilipalpis by eight antennomeres and features of the aedeagus. </p>
            <p>Description.</p>
            <p> Form and color. Total length: 1.6-2.0mm; elytral width: 0.8-1.0mm; E.I.:1.1-1.3, P.I.:2.1-2.4, elytra 2.6-3.0  × as long as pronotum. Body oval, convex dorsally. Labrum, clypeus and frons dark reddish-brown, clypeus with reddish-brown preocular patches; maxillary palpi unicolored yellow; pronotum dark reddish-brown mesally with light red brown margin; elytral dark reddish-brown, lighter posteriorly; ventrites reddish-brown or brown; legs light brown or light reddish-brown. </p>
            <p> Head. Labrum entirely microsculptured, with few punctures at the anterior margin. Clypeus (Fig. 4A) with angularly excised anterior margin, entirely microsculptured, ground punctures sparse, interspaces 3-4  × as large as punctures, systematic punctures distinct. Frons with dense ground punctures, interspaces 2-4  × as large as punctures, systematic punctures distinct. Eyes large, not protruding. Antennae (Fig. 4B) with eight antennomeres. Maxillary palpi (Fig. 4C) 1.2-1.3  × as long as pronotum in midline, about as long as maximum width of clypeus; length ratio palpomere 4:3 =1.5-1.6, palpomere 4 asymmetrical. Mentum (Fig. 4D) with sparse coarse punctures, microsculpture existing on lateral portions. </p>
            <p> Thorax. Pronotum ca. 1.1-1.3  × as wide as long, pronotal ground punctures as on frons, surface between ground punctures with shallow microsculpture; systematic punctures indistinct, only several coarse punctures existing on the middle of the lateral part. Elytral ground punctation slightly larger than that on head and pronotum, interspaces 1.4-1.6  × as large as punctures, surface between ground punctures as on the pronotum; 4 rows of systematic punctures distinct, with strongly reduced number of punctures, mesal row not reaching anterior margin, intervals without coarse punctures. Prosternum slightly convex, without carina medially. Mesoventrite (Fig. 4E) with distinct, flexuose and narrow mesal carina. Metaventrite distinctly convex mesally, with a small glabrous area posteromedially. </p>
            <p>Legs. Pubescence present on about 2/3 of femora (Fig. 4G, H, I), hairline oblique on pro- and mesofemora, slightly oblique on metafemora.</p>
            <p>Abdomen. Ventrite 5 (Fig. 4F) densely pubescent, apical emargination semicircular, with a row of strong setae.</p>
            <p> Aedeagus (Fig. 7B). Length: 0.33mm. Phallobase about 2/3  × as long as the parameres, manubrium blunt basally. Apex of parameres truncate, almost flat, weakly inclining toward midline; lateral margin straight, with indistinct subapical constriction; inner margin slightly concave subapically; basal portion extending into about half of phallobase. Median lobe wider than paramere, apical third gradually narrowing apicad, apex bluntly rounded; corona large, locating at the basal third; basal apophyses moderately short, bending laterad; reaching third of the phallobase. </p>
            <p>Etymology.</p>
            <p> This species is named after Dr. Albrecht Komarek, a specialist in  Hydrophilidae , who works at Naturhistorisches Museum, Wien, Austria. </p>
            <p>Distribution.</p>
            <p>Only known type locality.</p>
            <p>Remark.</p>
            <p> This species belongs to the group of species entirely chagrinate clypeus and unicolorous maxillary palpomere 4, together with  A. igneus Komarek &amp; Hebauer,  A. umbrosus Komarek &amp; Hebauer,  A. gracilipalpis Komarek &amp; Hebauer and  A. schoenmanni Komarek &amp; Hebauer. It differs from  A. igneus by eight antennomeres (nine antennomeres in  A. igneus ), pronotum without anterolateral chagrination, lateral margin of parameres straight and parameres slightly constricted subapically (lateral margin of parameres strongly sigmoid and with distinct subapical constriction in  A. igneus ), from  A. umbrosus by eight antennomeres (nine antennomeres in  A. umbrosus ) and parameres moderately narrow, lateral margin straight with indistinct subapical constriction (Parameres moderately wide; lateral margins very slightly curved with distinct subapical constriction in  A. umbrosus ), from  A. gracilipalpis by eight antennomeres and lateral margin of parameres with indistinct subapical constriction and median lobe with apical third gradually narrowing apicad (lateral margin of parameres with distinct supapical constriction and median lobe with margins of ventral face converging to narrow, parallel-sided apical half in  A. gracilipalpis ), from  A. schoenmanni by eight antennomeres (nine antennomeres in  A. schoenmanni ), lateral margin of parameres straight with indistinct subapical constriction and median lobe with corona locating at the basal third (lateral margins of aedeagus distinctly sigmoid with strong subapical constriction and median lobe with corona located at apical third in  A. schoenmanni ). Very similar to  A. reticuliceps , differs in its small size, entire chagrinate clypeus, eight antennomeres (nine antennomeres in  A. reticuliceps ), median lobe with apical third gradually narrowing apicad and bluntly rounded apically (median lobe apex globular, with subapical constriction in  A. reticuliceps ). </p>
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	https://treatment.plazi.org/id/7207B547081750D6A276E84D147BA280	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.		Pensoft via Plazi	Yang, Zhen-ming;Jia, Fenglong;Jiang, Lu;Guo, Qiang	Yang, Zhen-ming, Jia, Fenglong, Jiang, Lu, Guo, Qiang (2021): Four new species of Agraphydrus Regimbart, 1903 with additional faunastic record from China (Coleoptera, Hydrophilidae, Acidocerinae). Deutsche Entomologische Zeitschrift 68 (1): 189-205, DOI: http://dx.doi.org/10.3897/dez.68.66200, URL: http://dx.doi.org/10.3897/dez.68.66200
552395DB81535ABC987BEA547E83B8B0.text	552395DB81535ABC987BEA547E83B8B0.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Agraphydrus pseudoniger Yang & Jia 2021	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Agraphydrus pseudoniger Yang &amp; Jia sp. nov. Figs 2A, B; 5; 7C </p>
            <p>Type locality.</p>
            <p>China, Jiangxi Province, Shangyou County, Guanggushan Nature Reserve.</p>
            <p>Material examined.</p>
            <p>
                  Holotype: male (SYSU);  
                <a title="Search Plazi for locations around (long 114.05112/lat 25.919722)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=114.05112&amp;materialsCitation.latitude=25.919722">Jiangxi Province</a>
                 , Shangyou County, Guanggushan Nature Reserve, ca 25°55'11"N, 114°03'04"E, 846m a.s.l., 21.vi.2015, Fenglong Jia, Yudan Tang leg.   Paratypes: (47exs., IZCAS, SYSU): 21 exs., same data as holotype; 3 exs.,  
                <a title="Search Plazi for locations around (long 114.064445/lat 26.284445)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=114.064445&amp;materialsCitation.latitude=26.284445">Jiangxi Province</a>
                 , Suichuan County, Nanfengmian Nature Reserve, 816m a.s.l., 26°17'04"N, 114°03'52"E, 18.vi.2015, Fenglong Jia, Yudan Tang leg  ;   3 exs.,  Guangdong Province , Dadongshan Nature Reserve, 19-22.vi.2013, Fenglong Jia leg  ;   24 exs.,  Guangdong Province , Nanling, Dadongshan, 22-26.vi.2009, Fenglong Jia leg  ;   5 exs,  Guangdong Province , Lianzhou City, Dadongshan, 23.ix.2008, Yun Wang leg. 
            </p>
            <p>Diagnosis.</p>
            <p> This species is distinguished from other species of  Agraphydrus by the following combination of characters: labrum, clypeus and frons black; without preocular patches; maxillary palpi with apical palpomere slightly longer than penultimate, palpomere 4 without apical infuscation; clypeus without microsculpture, antennae with eight antennomeres; elytra with four rows of systematic punctures; meso- and metafemora pubescent in about basal 2/3; aedeagus with apex of the parameres distinct bending mesally, corona large, located at subapical position. </p>
            <p>Description.</p>
            <p> Form and color. Total length:1.9-2.3 mm; elytral width:1.0-1.2 mm; E.I.:1.1-1.2, P.I.:2.1-2.3, elytra 2.5-3  × as long as pronotum. Body oblong oval, distinct convex dorsally. Labrum, clypeus and frons black, preocular patches absent; maxillary palpi unicolored yellow; pronotum black with reddish-brown margin; elytral black; ventrites black; femora and tibia dark reddish-brown, tarsus yellow. </p>
            <p> Head. Labrum with dense, fine punctures and several coarse punctures. Clypeus (Fig. 5A) with angularly deep excised anterior margin and small median notch (Fig. 5B), without microsculpture, with very sparse ground punctures, coarser than that on the labrum, interspaces 1-3  × as large as punctures. Systematic punctures distinct. Ground punctures on the frons as on the clypeus, systematic punctures distinct. Eyes small, not protruding. Antennae (Fig. 5C) with eight antennomeres. Maxillary palpi (Fig. 5D) 1.0-1.1  × as long as pronotum in midline, 0.9-1.0  × as long as maximum width of clypeus; length ratio palpomere 4:3 =1.0-1.3, palpomere 4 asymmetrical. Mentum (Fig. 5E) with fine and sparse punctures on the lateral portions, without microsculpture. </p>
            <p> Thorax. Pronotum ca. 1.10-1.25  × as wide as long, pronotal ground punctures sparse, as on frons, interspaces 1-3  × as large as punctures, surface between ground punctures with microsculpture, systematic punctures distinct, located in the anterior and lateral middle position of the clypeus, each with a long seta on the middle. Elytral ground puncture slightly larger than that on head and pronotum, interspaces 1-2  × as large as punctures, surface between ground punctures as on the pronotum; with four distinct rows of systematic punctures, mesal rows reaching anterior margin. Prosternum slightly convex, without median carina. Mesoventrite (Fig. 5F) with narrow, needle-like and strong median carina, extending to middle of mesofemora. Metaventrite moderately convex mesally, with small glabrous area posteromedially. </p>
            <p>Legs. Pubescence present on proximal 2/3 of femora (Fig. 5H, I, J), hairline oblique on pro- and mesofemora, straight on metafemora.</p>
            <p>Abdomen. Ventrite 5 (Fig. 5G) round, without apical emargination, with a row of strong setae.</p>
            <p>Aedeagus (Fig. 7C). Length: 0.31mm. Phallobase about as long as parameres, manubrium wide and triangular. Base of parameres wide, slightly narrowing apicad, apical 1/3 strongly narrowed, apex blunt, moderately bending mesad, lateral margin straight at basal 2/3, cambered in apical 1/3, basal protrusion extending into about half of phallobase. Median lobe slender, shaped like an index finger, margin cambered; apex bluntly rounded, slightly shorter than parameres, corona moderately larger, located at subapical position; basal apophyses long, reaching to half of phallobase.</p>
            <p>Etymology.</p>
            <p> Specific name derived from Latin  “pseudo” , false, and "  Agraphydrus niger ", black, refers to the similarity with  Agraphydrus niger Komarek &amp; Hebauer, 2018. </p>
            <p>Distribution.</p>
            <p>CHINA (Jiangxi, Guangdong).</p>
            <p>Remarks.</p>
            <p> This species shares four rows of distinct systematic punctures, absence of clypeal microsculpture, unicolorous maxillary palpomeres, antennae with eight antennomeres with  A. fasciatus Komarek &amp; Hebauer,  A. niger Komarek &amp; Hebauer,  A. yunnanensis Komarek &amp; Hebauer and  A. longipenis Komarek &amp; Hebauer. It differs from  A. yunnanensis and  A. longipenis by eyes small, mesoventrite carinate (  A. yunnanensis and  A. longipenis without mesoventral carina), parameres moderately curved inwards subapically, median lobe with corona located at subapical position (apex of parameres not curved inwards, median lobe with corona located at base in  A. yunnanensis and  A. longipenis ). Shares small eyes, mesoventral carina with  A. fasciatus ,  A. niger and  A. fujianensis Komarek &amp; Hebauer, similar aedeagus with  A. fasciatus ,  A. niger and  A. politus Komarek &amp; Hebauer, differs from  A. fujianensis by abdominal ventrite 5 with apical emargination, coloration of pronotum and elytra (dark yellowish to rufous brown in  A. fujianensis , black in  A. pseudoniger ), parameres moderately curved inwards subapically and corona of median lobe locating at subapical position (apex of parameres not curved inwards, median lobe with corona basally in  A. fujianensis ); from  A. politus by small size, with four rows of punctures (ten in  A. politus ), phallobase about as long as parameres and apex of parameres moderately curved inwards (phallobase slightly longer than the parameres, parameres strongly curved inwards subapically in  A. politus ); from  A. fasciatus by clypeus without preocular patches, pronotum and elytra black and parameres slightly longer than median lobe (parameres about 2x as wide as median lobe in  A. fasciatus ); from  A. niger by clypeus with a deep excision anteriorly and small median notch and mesal rows of systematic punctures reaching anterior margin. </p>
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	https://treatment.plazi.org/id/552395DB81535ABC987BEA547E83B8B0	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.		Pensoft via Plazi	Yang, Zhen-ming;Jia, Fenglong;Jiang, Lu;Guo, Qiang	Yang, Zhen-ming, Jia, Fenglong, Jiang, Lu, Guo, Qiang (2021): Four new species of Agraphydrus Regimbart, 1903 with additional faunastic record from China (Coleoptera, Hydrophilidae, Acidocerinae). Deutsche Entomologische Zeitschrift 68 (1): 189-205, DOI: http://dx.doi.org/10.3897/dez.68.66200, URL: http://dx.doi.org/10.3897/dez.68.66200
4980FE22B34159BAA7D69E6A6542C9A2.text	4980FE22B34159BAA7D69E6A6542C9A2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Agraphydrus sabulosus Yang & Jia 2021	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Agraphydrus sabulosus Yang &amp; Jia sp. nov. Figs 2C, D; 6; 7D </p>
            <p>Type locality.</p>
            <p>China, Guangdong Province, Fengkai County, Heishiding Nature Reserve.</p>
            <p>Material examined.</p>
            <p>
                  Holotype: male (SYSU); CHINA: Guangdong Province, Fengkai,  
                <a title="Search Plazi for locations around (long 111.86667/lat 23.516666)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=111.86667&amp;materialsCitation.latitude=23.516666">Heishiding Nature Reserve</a>
                 , ca 23°31'N, 111°52'E, 20-22.xii.2014, Fenglong Jia, Renchao Lin, Yudan Tang leg.  Paratypes: (9 exs., IZCAS, SYSU):  4 exs., same data as holotype ;   5 exs., Jiangxi Province, Shangyou Country,  
                <a title="Search Plazi for locations around (long 114.05112/lat 25.919722)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=114.05112&amp;materialsCitation.latitude=25.919722">Guanggushan Nature Reserve</a>
                 , 846m a.s.l, 25°55'11"N, 114°03'04"E, 21.vi.2015. leg. Renchao Lin, Yudan Tang. 
            </p>
            <p>Diagnosis.</p>
            <p> This species is distinguished from the other species of  Agraphydrus by the following combination of characters: labrum, clypeus and frons black; preocular spots present; clypeus entirely microsculptured; maxillary palpi with apical palpomere about 1.5  × as long as the penultimate one, palpomere 4 without apical infuscation; antennae with 9 antennomeres; elytra with four irregular series of coarse punctures; meso- and metafemora pubescent in about basal 2/3; aedeagus with median lobe narrowing toward the apex; parameres with obvious subapical constriction. </p>
            <p>Description.</p>
            <p> Form and color. Total length: 1.9-2.1 mm; elytral width: 1.0-1.1 mm; E.I.:1.1-1.3, P.I.:1.3-2.2, elytra 3-4  × as long as pronotum. Body moderately oval, moderately broad, slightly convex dorsally. Labrum and frons black, clypeus black mesally with yellow preocular patches, as wide as eyes; maxillary palpi unicolored yellow; pronotum unicolored light yellow or dark brown mesally with light red brown margin; elytra light yellow or light yellow mesally, lateral and anterioral margin black. Ventrites black; legs light to dark brown. </p>
            <p> Head. Labrum entirely microsculptured, with several punctures at the anterior margin. Clypeus (Fig. 6A) almost entire surface covered by microsculpture, absent only from a small posterior region; ground punctures only present at the non-microsculptured area, as on frons, interspaces 1-2  × as large as punctures; clypeus and frons with distinct systematic punctures. Eyes moderately large, distinctly protruding. Antennae (Fig. 6B) with nine antennomeres. Maxillary palpi (Fig. 6C) 1.2-1.5  × as long as pronotum in midline, 1.0-1.1  × as long as maximum width of clypeus; length ratio palpomere 4:3 =1.4-1.5, palpomere 4 asymmetrical. Mentum (Fig. 6D) with several coarse punctures in lateral portion, without microsculpture. </p>
            <p> Thorax. Pronotum ca. 3-4  × as wide as long, pronotal ground punctures as on frons and clypeus, surface between ground punctures smooth, without microsculpture; systematic punctures distinct, located at the middle of the lateral margin. Elytral ground punctures as that on head and pronotum; systematic punctures distinct, arranged into 4 rows, mesal row not reaching anterior margin, intervals without coarse punctures. Prosternum weakly convex, not carinate medially, with a transverse groove. Mesoventrite (Fig. 6E) slightly bulged. Metaventrite with a bulge mesally, hydrofuge pubescence present on the surface, only absent from a small area on posteromedian part. </p>
            <p>Legs. Pubescence present on proximal 2/3 of femora (Fig. 6G, H, I), hairline oblique on pro- and mesofemora, straight on metafemora.</p>
            <p>Abdomen. Ventrite 5 (Fig. 6F) trapezoidal, with distinct semicircular apical emargination.</p>
            <p> Aedeagus (Fig. 7D). Length: 0.3 mm. The length of the phallobase 2/3  × as long as the parameres, margin distinct bend toward slender, pointed manubrium. Apex of parameres obtuse, moderately flat; lateral margin is curved in basal 3/4, sunken in apical 1/4; mesal margin slanted but straight; base extending into about 1/3 of phallobase. Median lobe wide basally, narrowing toward apex, apex delicate; corona moderately large, locating at middle of the median lobe; basal apophyses slender and moderately long, slightly bending laterad; reaching the 1/3 of the phallobase. </p>
            <p>Etymology.</p>
            <p>This species is named after the holotype acquisition environment, which has a lot of sand.</p>
            <p>Distribution.</p>
            <p>China (Guangdong, Jiangxi).</p>
            <p>Remark.</p>
            <p> This species shares almost entirely chagrinate clypeus and unicolored maxillary palpomere 4 with  A. arduus Komarek &amp; Hebauer,  A. annapurnensis Komarek,  A. connexus Komarek &amp; Hebauer,  A. flavonotus Komarek,  A. gracilipalpis Komarek &amp; Hebauer,  A. gilvus Komarek,  A. igneus Komarek &amp; Hebauer,  A. narusei Komarek,  A. ogatai ,  A. orientalis Komarek &amp; Hebauer,  A. reticuliceps Komarek &amp; Hebauer,  A. schoenmanni Komarek &amp; Hebauer, and many individuals of  A. umbrosus Komarek &amp; Hebauer. Its dorsal color is very similar to some individuals of  A. connexus , differs from  A. connexus by parameres with apex obtuse, moderately flat, manubrium slender and pointed (parameres with apex delicate and bluntly rounded, dorsal face connected with base of median lobe by distinct median band and the manubrium conical in the  A. connexus ). Its aedeagus is very like that of  A. flavonotus Komarek, from which it differs by clypeus with distinct ground punctures (ground punctures obsolete on clypeus in  A. flavonotus ), four rows of systematic punctures distinct (indistinct in  A. flavonotus ), mesoventrite with moderately distinct mesal bulge (strong in  A. flavonotus ), apex of median lobe delicate and basal apophyses reaching the 1/3 of the phallobase (apex of median lobe flatly and the basal apophyses reaching half of phallobase in  A. flavonotus ). Differs from  A. arduus and  A. igneus by pronotum without anterolateral chagrination, parameres with apex obtuse, moderately flat, lateral margin of the parameres slightly curved and median lobe narrowing toward apex (parameres with apex delicate, bulgy, lateral margin of parameres slightly sigmoid and median lobe with blunt or flat, rarely slightly indented apex in  A. arduus , and apex of parameres strongly inflated, lateral margin of the parameres strongly sigmoid and apex of median lobe bluntly rounded with numerous distinct setae on top in  A. igneus ). </p>
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	https://treatment.plazi.org/id/4980FE22B34159BAA7D69E6A6542C9A2	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.		Pensoft via Plazi	Yang, Zhen-ming;Jia, Fenglong;Jiang, Lu;Guo, Qiang	Yang, Zhen-ming, Jia, Fenglong, Jiang, Lu, Guo, Qiang (2021): Four new species of Agraphydrus Regimbart, 1903 with additional faunastic record from China (Coleoptera, Hydrophilidae, Acidocerinae). Deutsche Entomologische Zeitschrift 68 (1): 189-205, DOI: http://dx.doi.org/10.3897/dez.68.66200, URL: http://dx.doi.org/10.3897/dez.68.66200
