荒漠拟步甲科鳖甲族三种幼虫头壳色素区的观察
Pigmentation patterns on larval cephalic capsule of three desert beetles (Coleoptera: Tentyriini)
王岩，刘小宁，马纪**
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作者单位：新疆大学生命科学与技术学院 新疆生物资源基因工程重点实验室乌鲁木齐830046
中文关键词：鞘翅目，鳖甲族，幼虫，头壳
英文关键词：Coleoptera, Tentyriini, larva, cephalic capsule
中文摘要： 荒漠拟步甲科鳖甲族昆虫的幼虫具有相似的圆柱状体形，从形态上不易区别。以往对荒漠拟步甲幼虫的形态研究注重于上唇和足等部位的刚毛和小刺的特征，少有对头壳颜色的记载。通过在体视显微镜下观察室内饲养的鳖甲族昆虫(鞘翅目：拟步甲科)小胸鳖甲Microdera punctipennis Kaszab、光滑鳖甲Anatolica polita borealis Kaszab和细颈露颚甲Colposcelis microderoides microderoides Reitter 的大龄幼虫，发现它们的头壳色素区呈现出不同的形状和大小，可方便地用于区分这3种幼虫。同时，测量结果显示幼虫头壳宽与前胸背板宽之比在这3种幼虫有显著差异。
英文摘要：Desert tenebrionid larvae of the Tentyriini have a similar cylinder body shape making them difficult to distinguish from each other morphologically. Previous taxonomic research on desert tenebrionid larvae mainly focused on features of the setae and spinules on larval maxilla and legs and descriptions of the pigmentation pattern of larval cephalic capsule are rare. Here, We describe different pigmentation patterns on the larval cephalic capsule and compare the area of pigmentation in the three tenebrionid species; Microdera punctipennis Kaszab, Anatolica polita borealis Kaszab and Colposcelis microderoides microderoides Reitter. In addition, the ratio of the width of the larval cephalic capsule to that of the pronotum differs among larvae of these species. This provides a convenient method to distinguish between larvae of these beetles at the third instar or above.