Anthrenus, Geoffroy, 1762

Holloway, Graham J., 2024, Differentiation of Anthrenus isabellinus Küster, 1848 from Anthrenus chikatunovi Holloway, 2020 (Coleoptera, Dermestidae, Megatominae), Arquivos Entomolóxicos 30, pp. 49-54 : 50

Anthrenus chikatunovi ( Fig. 1a ) Anthrenus isabellinus ( Figs. 1b – 1e )

Parameres 384 µm long, splaying out from base Parameres 542 µm long (mean length of aedeagi in with bowed outer margins and curving into blunt Figs. 1b – 1e ), parallel to each other for most of inward pointing apices. Inner margins of paddle- their length. Overall appearance of aedeagus long, shaped posterior halves of parameres diverge and narrow and oblong shaped. Tips of posterior are densely coated in inward pointing sharp setae. paddles do not tilt in towards each other. Inner LArge white ‘windowS’ froM APiceS of PArAMereS margins of paddles baring weaker setae that often down through disc of paddles. point towards the apices of the parameres. Inner halves of paddles paler than the rest of the aedeagus.

Median lobe broad at base and steadily narrows Median lobe broad at base, almost parallel sided for the first 3/4 to 4/5 of length and continues as for the first 1/3. Beyond that, the margins a parallel sided finger terminating in a blunt, steadily converge to a very thin, short terminal rounded tip. finger with a slight, but obvious, bulb like expansion at the very tip.

Figures

Fig. 1.– Aedeagi. 1a.- Anthrenus chikatunovi. 1b–1e.- Anthrenus isabellinus. Scale bars = 100 µm.