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31 March 2019 Descriptions of the Larva, Pupa and Life History of the North American Darkling Beetle Idiobates castaneus (Knoch) (Coleoptera: Tenebrionidae)
Warren E. Steiner Jr.
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Abstract

This study describes the larva and pupa of the monotypic darkling beetle Idiobates castaneus (Knoch) (Coleoptera: Tenebrionidae) in the tribe Tenebrionini, from eastern North America. The species inhabits forested regions where adults and associated larvae have been discovered under dry loose bark of dead standing trees where cavities or pockets of frass have formed, apparently following infestations of other insects and rodents. Identity is confirmed by rearing of adults and pupae and preservation of associated exuvia. Distinctive characters of the larval abdominal apex and the armature of pupal ‘gin-traps’ are illustrated. A key to the larvae of North American genera currently placed in Tenebrionini is included.

© Museum and Institute of Zoology PAS
Warren E. Steiner Jr. "Descriptions of the Larva, Pupa and Life History of the North American Darkling Beetle Idiobates castaneus (Knoch) (Coleoptera: Tenebrionidae)," Annales Zoologici 69(1), 137-148, (31 March 2019). https://doi.org/10.3161/00034541ANZ2019.69.1.009
Received: 17 September 2018; Accepted: 13 February 2019; Published: 31 March 2019
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KEYWORDS
darkling beetles
frass
gin traps
larvae
pupae
saproxylic insects
taxonomy
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