Larvae of trap-jaw ants, Odontomachus Latreille, 1804 (Hymenoptera: Formicidae): morphology and biological notes

IF 3.8 1区农林科学 Q1 ENTOMOLOGY

Myrmecological News Pub Date : 2017-10-01 DOI:10.25849/MYRMECOL.NEWS_025:017

E. Fox, Adrian A. Smith, Joshua C. Gibson, Daniel Solís

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引用次数: 7

Abstract

This study aims to contribute to the neglected topic of larval biology in ants. The number of larval instars for three different species of trap-jaw ants, Odontomachus meinerti Forel, 1905, Odontomachus bauri Emery, 1892, and Odontomachus brunneus (Patton, 1894) was estimated to three based on the maximum width frequency distributions of head capsules from worker and male larvae. The obtained number of larval instars was smaller than from a previous report with another species in the genus, indicating possible interspecific variation. Larvae of different sexes and instars among the three different species were generally identical, differing merely by relative dimensions and patterns of hair distribution. Dorsal "doorknob" protuberances were recorded for the first time in the genus, and observed being used to fix larvae onto nest walls. From observing several individuals, we suggest the ornamentation of spiracle peritremes and the types of body protuberances are useful characters for larval taxonomy within this group. Moreover, a few individuals were found possessing anomalous structures which are reminiscent of characters from related taxa. Finally, some brief observations are made on an unidentified parasite found inside some mature larvae of O. bauri.

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捕颚蚁的幼虫，Odontomachus Latreille, 1804(膜翅目:蚁科):形态与生物学记录

本研究旨在为蚂蚁幼虫生物学这一被忽视的课题做出贡献。根据工蚁和雄蚁头囊的最大宽度频率分布，估计3种陷阱颚蚁(Odontomachus meinerti Forel, 1905)、Odontomachus bauri Emery, 1892和Odontomachus brunneus (Patton, 1894)的幼虫龄数为3。所获得的幼虫龄数比先前报道的该属另一种的幼虫龄数少，表明可能存在种间变异。三种幼虫的不同性别和龄期基本相同，差异仅在于相对尺寸和毛发分布模式。本属首次记录到背侧“门把”状突起，用于将幼虫固定在巢壁上。通过对几个个体的观察，我们认为气孔边缘的纹饰和体突的类型是该类群幼虫分类的有用特征。此外，还发现少数个体具有与相关分类群特征相似的异常结构。最后，对在一些鲍氏孤虫成熟幼虫体内发现的一种身份不明的寄生虫进行了简要的观察。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Myrmecological News ENTOMOLOGY-

CiteScore

7.30

自引率

4.90%

发文量

审稿时长

>12 weeks

期刊介绍： Taxonomic manuscripts with isolated species descriptions are generally discouraged, especially for genera with large numbers of undescribed species; it lies at the discretion of the editorial team whether such manuscripts are considered. Papers on new distribution records will be considered if the new records are sufficiently important or unexpected from a biogeographical perspective. Such papers could, for example, discuss relevant biological/ecological data and/or biogeographical implications such as analysis by species-distribution modelling. In detail, research areas covered by Myrmecological News include: behaviour; biogeography and faunistics; biological-pest control; chemical ecology; climate-change biology; cognition and learning; comparative and functional morphology; community ecology; conservation biology and bioindication; cytogenetics; ecology and evolution of (endo)symbioses; ecosystem (dis)services; foraging strategies; fossils; fragmentation ecology; genomics; histology; immune research; (integrative) taxonomy; interspecific hybridisation; invasion biology; life-history research; methodology in community quantification; national checklists; neurobiology; niche ecology; orientation and navigation; phenology; phylogeny and phylogeography; population genetics; sensory physiology; social evolution; social parasitism; sociogenomics; stable isotopes; tools for routine identification.