Oxytelus bajiei, Lü & Zhou, 2012

Lü, Liang & Zhou, Hong-Zhang, 2012, 3576, Zootaxa 3576, pp. 1-63 : 14-15

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Oxytelus bajiei

sp. nov.

Oxytelus bajiei View in CoL sp. nov.

( Figs. 1E, I, O; 4A–N)

Type material. Holotype: male, CHINA, Hunan, Bamianshan Natural Reserve , 774m, light trap, 9–12.VII.2008, Zhuo Yang leg. ( IZ-CAS) . Paratypes: CHINA, Guangxi, Napo : 1 male, 1 female, Nonghua, 960m, 13.IV.1998, Hai-Sheng Zhou leg. ( IZ-CAS) ; CHINA, Hubei, Shenglongjia : 3 males, 3 females, Jiuchong, 700m, light trap, 21.VII.1998, Jun-Jian He leg. ( IZ-CAS) ; 1 female, Xiagu, Zhaqigou, 600m, 6.VIII.1998, Chan-Juan Ye leg. (IZ-

CAS); CHINA, Hunan: 74 males, 87 females, same data as holotype ( IZ-CAS) ; 1 male, 1 female, Shennonggu, 1265m, 5.VII.2008, Zhuo Yang leg. ( IZ-CAS) ; 1 female, same data as previous except: cow dung ( IZ-CAS) ; 11 males, 33 females, Shennonggu Natural Reserve , 631m, light trap, 4–8.VII.2008, Zhuo Yang leg. ( IZ-CAS) ; CHINA, Shaanxi, Ningshanxian : 1 male, 2 females, Huoditang, 1580m, light trap, 25.VI–7.VII.1999, De-Cheng Yuan leg. ( IZ-CAS) ; CHINA, Sichuan: 1 female, Wanxian, Wang’erbao, 1200m, 9.VII.1993, Wen-Zhu Li leg. (IZ- CAS) ; 1 female, Emeishan, 700–800m, grass heap trap, 28.VIII.2005, Xiao-Yan Li leg. ( IZ-CAS) ; CHINA, Yunnan, Dali : 3 males, 2 females, Cangshan, 2085–2200m, 30.VII.2006, Xiao-Yan Li leg. ( IZ-CAS) ; 5 males, 4 females, same data as previous except: waterside, grass heap trap, Kai Shi leg. ( IZ-CAS) .

Description. Body blackish; pronotum (in some cases) a little lighter and approximately pitchy; elytra pale to brownish and translucent, with base and margins more or less infuscate. Maxillary palpi, first 4 antennomeres, and legs testaceous. Length [average] male, 5.3 mm; female, 5.0 mm.

Male. Head ( Figs. 1E; 5A) with widest at temples. Disc densely punctate, nearly glabrous. Clypeus elongated and protruding forward beyond anterior margin of supra-antennal ridges, longer than 1/3 head length, depressed in middle, surface glabrous and coriaceous in depression, with scattered large punctures (same as in vertex, but not so dense) in anterior part; anterior margin emarginate and thickened. Epistomal suture with lateral portions broadly incurved and running backward to level of anterior margin of eyes. Vertex densely punctate, slightly convex, posterior part poorly limited in median; mid-longitudinal suture fine and short, two punctate paralateral sutures running anteriorly to level of posterior margin of eyes. Eyes with fine facets, distinctly shorter than temples. Temples broadly rounded and dilated but sharply narrowed in front. Occipital suture with middle portion absent; nuchal ridge interrupted in middle, dorsal basal ridge present.

Mandible ( Fig. 4C) robust and strongly curved; two denticles on inner edge, one near middle and one at apical 1/4 and tiny. Antenna (type I) shorter than head and pronotum together, with apical antennomere shorter than two preceding together.

Pronotum transverse, broadest at about anterior 1/3, not wider than head. Disc 5-sulcate ( Fig. 1I), median sulcus and two paramedial sulci deep and punctate; two paralateral sulci shorter and oblique, each with punctate and strigose depression on lateral side. Lateral margins even in front but crenulate behind, posterolateral angles a little prominent. Elytra punctate but not rugose, and without lateral longitudinal ridge.

Abdomen coriaceous and pubescent, broadest at segment V. Sternite VII ( Fig. 4E) with two denticles near middle of posterior margin. Sternite VIII ( Fig. 4F) with subbasal ridge continuous in middle, with posterior margin protruding into subtriangular lobe, apex truncate or slightly emarginate and with short and fine transverse arc carina a little behind. Tergite X ( Fig. 4H) longer than wide, posterior margin truncate, with two lines of setae on haired posterior part.

Aedeagus ( Figs. 1O; 4K–N). Median lobe oblong-ovoid, with sclerite-like or membranous structures inside; apico-medial hook bent at middle, apical part weakly curved and sharply pointed, with transverse ridge (like process in lateral view) at middle of downside of apical part; dorsal membranous area covering most of dorsum of median lobe but not across whole length. Paramere arm-like, with apex a little flattened and rectangular, with seta at near apex and fine process nearby.

Female. Head ( Fig. 4B) smaller than male, narrower than pronotum; clypeus not depressed and not so protruding as in male, with anterior margin slightly emarginate; temples shorter than eyes, not dilated; midlongitudinal suture invisible; occipital suture continuous in middle. Mandible ( Fig. 4D) smaller.

Abdominal sternite VII without denticles on posterior margin. Sternite VIII ( Fig. 4G) with posterior margin broadly rounded and slightly and sharply protruding in middle.

Spermatheca ( Fig. 4J) ʋ- shaped, almost sharply angulate at middle, basal portion slightly bulbous, apex rounded.

Distribution. China (Guangxi, Hubei, Hunan, Sichuan, Yunnan).

Etymology. The specific epithet is from the name of a tale hero “Zhu Ba-Jie”. The broad frons and elongate male clypeus of this species is greatly like Zhu Ba-Jie’s face with his long snout.

Remarks. This new species is sorted out of the specimens identified as O. lucens by a former researcher. Actually, it is hard to discriminate these two species according to the characters given by Bernhauer (1903) or Cameron (1930), though the O. bajiei sp. nov. specimens are recognizable from O. lucens by the broader frons (male), anterior margin of supra-antennal ridges not so emarginate as that of O. lucens , the different clypeal shapes, and the temples constricted near eyes more sharply than O. lucens (male).


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