Drymeia quadrisetosa ( Malloch, 1919 )

Sorokina, Vera S. & Pont, Adrian C., 2015, A review of the genus Drymeia Meigen, 1826 (Diptera: Muscidae) in Russia, Zootaxa 4000 (2), pp. 151-206 : 190

Drymeia quadrisetosa ( Malloch, 1919)

Figs. 16 A–F

Pogonomyia quadrisetosa Malloch, 1919: 77 . Pogonomyia amurensis Lavčiev, 1971: 220 . Syn. nov. Drymeia amurensis ; Pont, 1986: 71.

Note. Lavčiev (1971) described Pogonomyia amurensis from Klimoutsky and Samodon in Khabarovskiy Kray, Russia. The holotype of D. amurensis should be in the Zoological Institute, Russian Academy of Sciences, St Petersburg, Russia, but it was not found there by Pont (2004) or by VSS. We have not seen the type, but Lavčiev’s description of D. amurensis and his figures of the hypopygium and mid femur are the same as for D. quadrisetosa Malloch , except for the number of strong anteroventral setae at the apex of mid femur. The mid femur of D. amurensis has only one such seta ( Lavčiev 1971), but the mid femur of D. quadrisetosa is said to have two such setae. However, many of the specimens of D. quadrisetosa which we have studied have a variable number of these setae, from 1 to 3, which may be the same or different on each mid leg. So the number of strong setae is a variable character and we have no hesitation in proposing this synonymy.

Material examined. RUSSIA: Chukotka Autonomous Okrug, Chaunskii raion: 1 male, Pevek, 28.vi.1963, K. Gorodkov; Anadyrskii raion, 3 males and 4 females, low part of Anadyr’ River, 64.83ºN 175.96ºE, 18.vii.2013, A. Barkalov. Krasnoyarsky Krai, Taymyr Peninsula: 2 males and 1 female, 114 km Khatanga, Kotuy River, 71.4ºN 103ºЕ, 1–5.vii.2010, A. Barkalov. Altai Republic, Kosh-Agachskii raion: 2 males, Ukok plateau, environs of Kal’dzhin-Kul’-Bas lake, 2400 m, 49°19'N 87°26'E, 21.vii.2006, T. Novgorodova. Zabaykalsky Krai [Chitinskaya Oblast]: 1 male, Nature Reserve “Sokhondinskii”, Verkhnii Bukukun cordon, ~ 1540 m, 49º36'N 111º06'E, 6.viii.1991, V. Pekin. Sakha Republic: 1 male, ~ 100 km NW Oymyakon, 64°08'N 141°27'E, [as 364 km from on road Khangyga], 5.vii.1985, A. Barkalov.

Remark. There has been no description of this species since Malloch’s (1919) original description, but the species can be reliably identified with the key by Huckett (1965a).

Distribution. Alaska, northern Canada (Yukon, Northwest Territories, Manitoba, Quebec, Labrador) and Russia (Siberia).

Figures

FIGURE 16. Drymeia spp., males. A – F. Drymeia quadrisetosa. A – C. Terminalia. A. Lateral view. B. Postero-lateral view. C. Posterior view. D. Mid femur. E. Fore metatarsus. F. Head, lateral view. G – K. Drymeia segnis. G – I. Terminalia. G. Lateral view. H. Postero-lateral view. I. Posterior view. K. Habitus, lateral view.