Hesperinus species

Krivosheina, N. P., 2024, FIRST RECORD OF HESPERINUS CUSPIDISTYLUS HARDY ET TAKAHASHI, 1960 (DIPTERA: HESPERINIDAE) FROM RUSSIA, Far Eastern Entomologist 502, pp. 8-11 : 10

Key to Hesperinus species from the Russian Far East and Japan

1. Gonostylus like broad apically pointed lobe with internal sclerotized conical protuberance in basal half ( Fig. 1, 1 ). Tergite 9 with broad lateral lobes and medial deep emargination ( Fig. 1 ) .................................................................. H. rohdendorfi Krivosheina et Mamaev

– Gonostylus without internal sclerotized conical protuberance in basal half ( Fig. 2 ) ......... 2

2. Gonostylus with curved at right angle apex forming flat broad plate ( Fig. 2 ). Tergite 9 with shallow small medial emargination ( Fig. 2 ) ..... H. cuspidistylus Hardy & Takahashi

– Gonostylus oval, broadly rounded, with a small subapical tooth. Tergite 9 evenly narrowed medially with semicircular deep emargination ( Hardy & Takahashi, 1960: 387, fig. 1e) ..... ................................................................................................................ H. nigratus Okada

Figures

Figs 1–2. Male genitalia of Hesperinus spp., dorsal view. 1 – H. rodendorfi; 2 – H. cuspidistylus. Abbreviations: ap aed - aedeagal apodeme; gcx – gonocoxite; gst – gonostylus; t9 – tergite 9.