taxonID	type	description	language	source
86DF35825AE95AA98011D724D150FD24.taxon	materials_examined	Material examined. Holotype: male (SYSU); Guangdong Province, 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.	en	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
86DF35825AE95AA98011D724D150FD24.taxon	diagnosis	Diagnosis. 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 x 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 x as long as phallobase, corona located in middle position; parameres with cuspidal, hook-like subapical protrusion.	en	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
86DF35825AE95AA98011D724D150FD24.taxon	description	Description. 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 x 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. Head. Labrum with dense, fine punctures, without microsculpture. Clypeus (Fig. 3 A) with angularly excised anterior margin, without microsculpture, ground punctures as on the labrum, interspaces 2 - 4 x as large as punctures, systematic punctures distinct; ground punctures on frons as on clypeus, systematic puncture distinct. Eyes large, not protruding. Antennae (Fig. 3 B) with eight antennomeres. Maxillary palp (Fig. 3 C) about as long as pronotum in midline, 0.75 - 0.84 x as long as maximum width of clypeus; length ratio palpomere 4: 3 = 1.27 - 1.31, palpomere 4 asymmetrical. Mentum (Fig. 3 D) with several fine punctures on lateral portions, without microsculpture. Thorax. Pronotum ca. 2 x 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. 3 E) with moderate bulge, abruptly declining posteriorly, with horizontal ridge posteriorly. Metaventrite with distinct mesal convexity, bearing a small glabrous area posteromedial part. Legs. Pubescence present on proximal 2 / 3 of profemora (Fig. 3 G) with oblique hairline, on about half of mesofemora (Fig. 3 H) with straight hairline, restricted to a narrow anterior strip on the basal half of metafemora (Fig. 3 I). Abdomen. Ventrite 5 (Fig. 3 F) without apical emargination. Aedeagus (Fig. 7 A). Length: 0.53 mm. Phallobase about 2 / 3 x 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.	en	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
86DF35825AE95AA98011D724D150FD24.taxon	etymology	Etymology. This species is named after the type locality, Dapeng Peninsula, Shenzhen, Guangdong Province.	en	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
86DF35825AE95AA98011D724D150FD24.taxon	distribution	Distribution. Only known from type locality.	en	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.taxon	materials_examined	Material examined. Holotype: male (SYSU), Guangdong Province, Taishan, shangchuan island, Rhesus monkey provincial national nature reserve, ca 21 ° 46 ' 12 " N, 112 ° 51 ' 39 " E, 10 m a. s. l., 19. I. 2019, Fenglong Jia & Zu-long Liang leg. Paratypes (13 exs., IZCAS, SYSU): same data as holotype.	en	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.taxon	diagnosis	Diagnosis. 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 x 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.	en	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.taxon	description	Description. Form and color. Total length: 1.6 - 2.0 mm; elytral width: 0.8 - 1.0 mm; E. I.: 1.1 - 1.3, P. I.: 2.1 - 2.4, elytra 2.6 - 3.0 x 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. Head. Labrum entirely microsculptured, with few punctures at the anterior margin. Clypeus (Fig. 4 A) with angularly excised anterior margin, entirely microsculptured, ground punctures sparse, interspaces 3 - 4 x as large as punctures, systematic punctures distinct. Frons with dense ground punctures, interspaces 2 - 4 x as large as punctures, systematic punctures distinct. Eyes large, not protruding. Antennae (Fig. 4 B) with eight antennomeres. Maxillary palpi (Fig. 4 C) 1.2 - 1.3 x 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. 4 D) with sparse coarse punctures, microsculpture existing on lateral portions. Thorax. Pronotum ca. 1.1 - 1.3 x 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 x 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. 4 E) with distinct, flexuose and narrow mesal carina. Metaventrite distinctly convex mesally, with a small glabrous area posteromedially. Legs. Pubescence present on about 2 / 3 of femora (Fig. 4 G, H, I), hairline oblique on pro- and mesofemora, slightly oblique on metafemora. Abdomen. Ventrite 5 (Fig. 4 F) densely pubescent, apical emargination semicircular, with a row of strong setae. Aedeagus (Fig. 7 B). Length: 0.33 mm. Phallobase about 2 / 3 x 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.	en	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.taxon	etymology	Etymology. This species is named after Dr. Albrecht Komarek, a specialist in Hydrophilidae, who works at Naturhistorisches Museum, Wien, Austria.	en	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.taxon	distribution	Distribution. Only known type locality.	en	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.taxon	materials_examined	Material examined. Holotype: male (SYSU); Jiangxi Province, Shangyou County, Guanggushan Nature Reserve, ca 25 ° 55 ' 11 " N, 114 ° 03 ' 04 " E, 846 m a. s. l., 21. vi. 2015, Fenglong Jia, Yudan Tang leg. Paratypes: (47 exs., IZCAS, SYSU): 21 exs., same data as holotype; 3 exs., Jiangxi Province, Suichuan County, Nanfengmian Nature Reserve, 816 m 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.	en	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.taxon	diagnosis	Diagnosis. 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.	en	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.taxon	description	Description. 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 x 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. Head. Labrum with dense, fine punctures and several coarse punctures. Clypeus (Fig. 5 A) with angularly deep excised anterior margin and small median notch (Fig. 5 B), without microsculpture, with very sparse ground punctures, coarser than that on the labrum, interspaces 1 - 3 x 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. 5 C) with eight antennomeres. Maxillary palpi (Fig. 5 D) 1.0 - 1.1 x as long as pronotum in midline, 0.9 - 1.0 x as long as maximum width of clypeus; length ratio palpomere 4: 3 = 1.0 - 1.3, palpomere 4 asymmetrical. Mentum (Fig. 5 E) with fine and sparse punctures on the lateral portions, without microsculpture. Thorax. Pronotum ca. 1.10 - 1.25 x as wide as long, pronotal ground punctures sparse, as on frons, interspaces 1 - 3 x 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 x 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. 5 F) with narrow, needle-like and strong median carina, extending to middle of mesofemora. Metaventrite moderately convex mesally, with small glabrous area posteromedially. Legs. Pubescence present on proximal 2 / 3 of femora (Fig. 5 H, I, J), hairline oblique on pro- and mesofemora, straight on metafemora. Abdomen. Ventrite 5 (Fig. 5 G) round, without apical emargination, with a row of strong setae. Aedeagus (Fig. 7 C). Length: 0.31 mm. 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.	en	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.taxon	etymology	Etymology. Specific name derived from Latin " pseudo ", false, and " Agraphydrus niger ", black, refers to the similarity with Agraphydrus niger Komarek & Hebauer, 2018.	en	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.taxon	distribution	Distribution. CHINA (Jiangxi, Guangdong).	en	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.taxon	materials_examined	Material examined. Holotype: male (SYSU); CHINA: Guangdong Province, Fengkai, Heishiding Nature Reserve, 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, Guanggushan Nature Reserve, 846 m a. s. l, 25 ° 55 ' 11 " N, 114 ° 03 ' 04 " E, 21. vi. 2015. leg. Renchao Lin, Yudan Tang.	en	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.taxon	diagnosis	Diagnosis. 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 x 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.	en	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.taxon	description	Description. 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 x 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. Head. Labrum entirely microsculptured, with several punctures at the anterior margin. Clypeus (Fig. 6 A) 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 x as large as punctures; clypeus and frons with distinct systematic punctures. Eyes moderately large, distinctly protruding. Antennae (Fig. 6 B) with nine antennomeres. Maxillary palpi (Fig. 6 C) 1.2 - 1.5 x as long as pronotum in midline, 1.0 - 1.1 x as long as maximum width of clypeus; length ratio palpomere 4: 3 = 1.4 - 1.5, palpomere 4 asymmetrical. Mentum (Fig. 6 D) with several coarse punctures in lateral portion, without microsculpture. Thorax. Pronotum ca. 3 - 4 x 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. 6 E) slightly bulged. Metaventrite with a bulge mesally, hydrofuge pubescence present on the surface, only absent from a small area on posteromedian part. Legs. Pubescence present on proximal 2 / 3 of femora (Fig. 6 G, H, I), hairline oblique on pro- and mesofemora, straight on metafemora. Abdomen. Ventrite 5 (Fig. 6 F) trapezoidal, with distinct semicircular apical emargination. Aedeagus (Fig. 7 D). Length: 0.3 mm. The length of the phallobase 2 / 3 x 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.	en	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.taxon	etymology	Etymology. This species is named after the holotype acquisition environment, which has a lot of sand.	en	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.taxon	distribution	Distribution. China (Guangdong, Jiangxi).	en	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
