Zhenia Q. Zhang et al., 2016

Zhang, Qingqing & Zhang, Junfeng, 2019, Contribution to the knowledge of male and female eremochaetid flies in the late Cretaceous amber of Burma (Diptera, Brachycera, Eremochaetidae), Deutsche Entomologische Zeitschrift 66 (1), pp. 75-83 : 75

Genus Zhenia Q. Zhang et al., 2016

Type species.

Zhenia xiai Q. Zhang et al., 2016.

Emended diagnosis.

Closely similar to Eremomukha Mostovski, 1996, but smaller (body <10 mm long); cell r1 narrowly open, or closed at or just before wing margin; R4+5 simple or with a very shallow fork; M1 arising distad to end of discal cell; claw vestigial or absent; pulvillus and empodium extremely developed; male genitalia with aedeagus long, subcylindrical, gonocoxite stout, gonostylus without spine, cercus short, one-segmented, positioned behind hypoproct(?); female with ovipositor of piercing type, including swollen abdominal eighth segment, elongated, tapering eighth sternite with cloacal opening at middle of ovipositor, aculeus (fused ninth segment +cerci?) strongly sclerotized.

Remarks.

Until now, the subfamily Eremomukhinae has included eight species belonging to two genera: Eremomukha (Eremocreta) addita Mostovski, 1996, Eremomukha (Eremocreta) posita Mostovski, 1996, Eremomukha (Eremocreta) sorosi Mostovski, 1996, Eremomukha (Eremomukha) angusta J. Zhang, 2014, Eremomukha (Eremomukha) tsokutukha Mostovski, 1996, Eremomukha (Eremomukha) insidiosa Mostovski, 1996, Eremomukha (Eremomukha) tenuissima J. Zhang, 2014, and Zhenia xiai . Recently, new Zhenia specimens have been recovered from the Late Cretaceous amber of Myanmar. Among them, one new female and two new male flies of the genus Zhenia were identified. Based on these new findings, an emended diagnosis of this genus is proposed. Zhenia demonstrates close similarities in body structure and wing venation to Eremomukha , an Early Cretaceous eremochaited genus from Mongolia and China, but Zhenia differs mainly from Eremomukha by the characterized M1, which arises distad to end of discal cell. In contrast, Eremomukha has M1 arising directly from the anterior margin of the discal cell.