Morphological anomalies of endangered Korean relict long-horned beetle Callipogon relictus (Cerambycidae, Coleoptera) during ontogenesis and possible causes of their occurrence.

Dae-Am Yi,Yeon Jae Bae,Alexander V Kuprin

doi:10.3897/zookeys.714.21112

Abstract

This paper describes for the first time cases of exogenous morphological anomalies that occur during rearing of Callipogon relictus Semenov, 1899 in a laboratory setting. The highest frequency of the anomalies has been observed during pupation. It can be assumed that in beetles of this group, at final stages of ontogenesis, some abiotic factors such as humidity and temperature play an important role.

Highlights

Morphological anomalies are common in different groups of insects but there occurrence is scarce
Specimens for this article were obtained during the course of elaboration of methods for laboratory breeding and maintenance of a rare representative of the family of long-horned beetles, Callipogon relictus Semenov, 1899, which is widespread in East Asia and is a rare and endangered species (Kim et al 1976, Kuprin and Bezborodov 2012, Li et al 2012, Kuprin 2016, Yi et al 2017a)
The elaborated methods of laboratory breeding of this species are detailed in our works (Kuprin et al 2014, Yi et al 2017b)

Summary

Introduction

Morphological anomalies are common in different groups of insects but there occurrence is scarce. Different authors described cases of atypical body structures (mostly in imago) in many groups of insects: lice (Blagoveshenskiy 1969), weevils (Stachowiak 1982, Chadwick and Brunet 1985, Cmoluch 1985, Read 1994, Nazarenko 2006, 2014), ground beetles (Ferreira 2008, Kamal et al, 2008), road beetles (Frank 1981, Ferreira 2011), leaf beetles (Prisniy 1983, Abdullah and Abdullah 1969), hymenoptera (Balazuc 1958, Akre et al 1982), as well as specimens obtained during laboratory breeding (Savini and Furth 2004). The causes of developmental anomalies of various parts of the body are still unclear but, following the outcomes of these experiments, some outwardly similar anomalies may be a consequence of various environmental factors (Vasilieva 2005)

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