First record of gynandromorphism in the subfamily Dryininae (Hymenoptera: Dryinidae)

Abstract

A gynander specimen belonging to the genus Dryinus Latreille, 1804 (Hymenoptera: Dryinidae) is described from Ecuador (Zamora Province). It has a female aspect, but with male genitalia, no chelae and no Antennal Dorsal Organs (ADOs). This is the first record of a gynander specimen of Dryininae.

A review of the biology of the pincer wasps (Hymenoptera: Dryinidae)

“…Only a few individuals belonging to Anteoninae, Gonatopodinae and Dryininae have been documented: Anteon scapulare (Haliday) in the Palaearctic region; Deinodryinus rusticus Olmi and D. steineri Olmi in the Afrotropical region; and Gonatopus cavazzutii Olmi, G. desantisi and Dryinus sp. in the Neotropical region (Olmi et al 2019; Olmi, Onore & Guglielmino 2022; Olmi & Virla 2014; Richards 1948). All the described gynanders showed random (harlequin) patterns.…”

“…Dryinidae, commonly known as pincer wasps, include species living in a wide range of habitats (from Patagonia to northern Europe beyond the Arctic Circle), from sea level to altitudes over 3000 m (Olmi 1999). By having usually genera with worldwide distribution (except subfamilies Apodryininae and Plesiodryininae), the family seems to present no greater biogeographic interest (Olmi 1999;Olmi et al 2019;Olmi, Onore, Guglielmino 2022;Olmi & Virla 2006).…”

“…Within the Dryinidae family, 17 subfamilies (12 extant) and 53 genera have been reported using morphological characters (Martins & Domahovski 2022; Olmi et al 2020; Olmi, Onore & Guglielmino 2022). About 90% of the dryinid species in the world belongs to the subfamilies Anteoninae, Aphelopinae, Bocchinae, Dryininae and Gonatopodinae (Olmi & Virla 2014).…”