Qu Zong-Fei, Jia Zhi-Chao, Jiang Lu
Key Laboratory of Economic and Applied Entomology of Liaoning Province, College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning, 110866, China.
Key Laboratory of Economic and Applied Entomology of Liaoning Province, College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning, 110866, China.
Micron. 2019 May;120:10-16. doi: 10.1016/j.micron.2019.02.001. Epub 2019 Feb 4.
Lucanidae have long received great attention for their adults. However, differentiating between the larvae of stag beetles is difficult and remains unsatisfactorily resolved due to the microscopic features separating groups. In the current study, the larvae of Prismognathus dauricus Motschulsky, 1860 were investigated using light and scanning electron microscopy. The larvae of P. dauricus are atypical for the following characters: i) the epipharynx possesses anteriorly eleven protophoba arranged in a semi-round line; ii) the par stridens consists of 31 ± 0.7 (N = 10) subconical teeth arranged in a slightly curved, longitudinal row; iii) the plectrum is composed of 60 ± 1.4 (N = 10) carinae; iv) the claws of thoracic legs are apically blunt and bear four setae. Moreover, the size arrangement of the larval spiracles also provides valuable taxonomic information. Our SEM study reveals larval ultramorphological characters useful for identification of this species for the first time.
锹甲科因其成虫长期以来备受关注。然而，区分锹甲幼虫很困难，由于区分不同类群的微观特征，这一问题仍未得到令人满意的解决。在当前研究中，使用光学显微镜和扫描电子显微镜对1860年发现的戴氏赤翅锹甲（Prismognathus dauricus Motschulsky）的幼虫进行了研究。戴氏赤翅锹甲幼虫具有以下非典型特征：i）下咽前部有11个原口器，呈半圆形排列；ii）摩擦发音区由31±0.7（N = 10）个亚圆锥形齿组成，排列成略弯曲的纵向行；iii）拨弦器由60±1.4（N = 10）个隆线组成；iv）胸足爪顶端钝圆，有四根刚毛。此外，幼虫气门的大小排列也提供了有价值的分类信息。我们的扫描电子显微镜研究首次揭示了有助于识别该物种的幼虫超微形态特征。
