Photo Galleries: Three Dimensional Lepidoptera Genitalia
Photo Gallery: Rhopalocera
Male genitalia images for dissection
voucher specimen 2016HLK:2389 of Erynnis juvenalis (Lepidoptera: Hesperiidae:
Pyrginae)
Version 2016.1 by Hugo Kons Jr.
Genitalia were dissected and images taken by Hugo L. Kons Jr. with the GT Vision imaging system at the former American Entomological Institute. All structures are the natural three dimensional shape (not slide mounted).
A small portion of Erynnis juvenalis specimens lack the white ventral hindwing spots that enable the recognition of many individuals of this species. These individuals can be misidentified as Erynnis baptisae, E. lucilius, or E. persius, particularly smaller individuals that overlap in size with these species. However, the shape of the male valvae enables the correct identification of these individuals as E. juvenalis.
Comparison of valvae (inner side) of Erynnis juvenalis (left) and Erynnis baptisae (right)
Erynnis juvenalis
Adult
WI Portage County: Emmons Creek Public Hunting Area, oak
barrens/savanna, 26 May 1993, Hugo Kons Jr.
Capsule
(lateral with phallus)
Valvae (inner)
Note: The left valve has a chip off of the apical process (red
arrow).
Valvae (outer)
Uncus & Tegumen
(lateral)
Phallus
with ductus ejaculatorius
