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

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.

Survey research on the habitation and biological information of Callipogon relictus Semenov in Gwangneung forest, Korea and Ussurisky nature reserve, Russia (Coleoptera, Cerambycidae, Prioninae)

“…Differences in the hole shape have been reported to be correlated with mandible length (Yi 2014), but this has still not been clearly elucidated. In this study, the majority of emergence holes were elliptical, consistent with that of other prognathous species in the subfamily Prioninae (e.g.…”

Unusual teratological cases in Scarabaeidae (Coleoptera: Scarabaeoidea): two specimens with multiple malformations

“…More detailed sampling is needed to confirm our observation. We may further be able to explain the origin of teratologies with breeding assays and transcriptomic studies, leading us to a better understanding of the phenomenon (Yi et al 2017).…”

“…Balazuc was a pioneer in the classification of malformations on insects, thus his works are the base guide in teratological research (e.g., Balazuc 1948Balazuc , 1969. As possible causes of these conditions, endogenous or exogenous factors have been reported to produce malformations on insects (Yi et al 2017;Kizub and Leshchenko 2019), including genetic disorders, deficiency of the embryonic development, physical or chemical damage, and biological parasitism (Bunalski and Lubecki 1990;Clark and Belo-Neto 2010;Ghannem et al 2015). Furthermore, reports of teratological cases on insects are infrequent as most malformations go unnoticed and lack taxonomical value (Gasca-Álvarez et al 2017), even when malformed specimens have been described as new taxa (e.g., Coiffait 1965;Dellacasa et al 2001;Wollaston 1867).…”

The thin red line between species – genomic differentiation of Gymnosoma Meigen, a taxonomically challenging genus of parasitoid flies (Diptera: Tachinidae)

“…4A), exemplifying the phenotypic plasticity of this feature. Morphological features in insects can be affected by individual size (Yi et al ., 2017), the host (Campan et al ., 2005), the developmental temperature (Blackman & Spence, 1994) or other environmental factors (Van Dyck & Wiklund, 2002). For example, it is very plausible that G. costatum and G. inornatum represent dwarf forms, which are known to occur in many parasitoid species (Polilov, 2016), including other Tachinidae.…”