Sehnal Richard
Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Department of Zoology and Fisheries, Kamýcká 129, CZ-165 21 Praha 6 - Suchdol, Czech Republic..
Zootaxa. 2017 Mar 30;4247(5):593-598. doi: 10.11646/zootaxa.4247.5.6.
Scapanoclypeus Evans (Coleoptera: Scarabaeidae: Melolonthinae: Tanyproctini) was established with Trichinopus aberrans Frey designated as its type species and included five additional species: S. testaceus Evans, S. carinatus Evans, S. cornutus Evans, S. brunneus Evans, and S. aulacocoleatus Evans. Scapanoclypeus, Trichinopus Waterhouse, and Oedanomerus Waterhouse are distinguished from other African Tanyproctini by their small size (12 mm or less), reduced mouthparts, and antennae with 8-10 antennomeres (Evans 1987). Species of Scapanoclypeus and Oedanomerus have simple claws without cleft or teeth at base, a slightly conical labrum, and a third antennomere that is equal in length to the fourth; while Trichinopus has bifid claws, a distinctly conical labrum with rounded end, and the third antennomere approximately as long as the fourth (Lacroix 2007). The antennal club of Scapanoclypeus is at least three times longer than the combined length of antennomeres I-IV and the clypeal surface at nearly a right angle in relation to the plane of the frons, while Oedanomerus has an antennal club about as long as the combined length of antennomeres I-IV and coplanar clypeal and frontal surfaces (Evans 1987; Lacroix 2007; Sehnal 2013). Scapanoclypeus was subsequently mentioned in Lacroix (2007), who re-drew the figures and adopted the key from Evans (1987). Three additional species have since been described from southern Africa: S. triapicalis Sehnal, S. sinepunctatus Sehnal, and S. hardap Sehnal (see Sehnal 2013, 2014).
斯氏唇甲属（Scapanoclypeus）由埃文斯（Evans）建立（鞘翅目：金龟科：鳃金龟亚科：坦蜣螂族），模式种为异形毛蜣螂（Trichinopus aberrans Frey），该属还包括另外五个物种：埃氏斯氏唇甲（Scapanoclypeus testaceus Evans）、具脊斯氏唇甲（S. carinatus Evans）、具角斯氏唇甲（S. cornutus Evans）、褐斯氏唇甲（S. brunneus Evans）和具沟斯氏唇甲（S. aulacocoleatus Evans）。斯氏唇甲属、毛蜣螂属（Trichinopus）和澳蜣螂属（Oedanomerus）与其他非洲坦蜣螂族的区别在于体型较小（12毫米或更小）、口器退化，以及触角有8至10节（埃文斯，1987年）。斯氏唇甲属和澳蜣螂属的物种爪简单，基部无裂或齿，上唇略呈圆锥形，第三节触角与第四节等长；而毛蜣螂属的物种爪分叉，上唇明显呈圆锥形且端部圆润，第三节触角约与第四节等长（拉克鲁瓦，2007年）。斯氏唇甲属的触角棒至少是第一节至第四节触角长度之和的三倍长，唇基表面与额平面近乎成直角，而澳蜣螂属的触角棒长度约与第一节至第四节触角长度之和相等，唇基和额表面共面（埃文斯，1987年；拉克鲁瓦，2007年；谢纳尔，2013年）。随后，拉克鲁瓦（2007年）提到了斯氏唇甲属，他重新绘制了图谱并采用了埃文斯（1987年）的检索表。此后，又从南部非洲描述了另外三个物种：三尖斯氏唇甲（Scapanoclypeus triapicalis Sehnal）、无点斯氏唇甲（S. sinepunctatus Sehnal）和哈达普斯氏唇甲（S. hardap Sehnal）（见谢纳尔，2013年、2014年）。
