A New Species of the Genus Rhaphium (Dolichopodidae, Diptera) from Siberia

Abstract

A New Species of the Genus Rhaphium (Dolichopodidae, Diptera) from Siberia Rhaphium sibiricus Negrobov, Barkalov et Selivanova, sp. n. is described from the Altai Mountains. The new species is similar to Rhaphium gruniniani Negrobov, 1979, differing by black legs, simple, not thickened tip of fore basitarsus, length ratio of apical portion of vein CuA1 to crossvein dm-cu and by the shape of gonopodes.

West Palaearctic species of the genus Diostracus Loew, 1861 (Diptera: Dolichopodidae)

“…The following characters of generic importance were listed in the original description of Lagodechia, but were not obvious on pictures made by O. Selivanova from type material (Grichanov et al 2011a, b): antennal scape has dorsal projection; distance between scutellum and 1 st tergum is 3 times as long as scutellum. Negrobov & Tsurikov (1996) also found important differences in the female oviscapt of Lagodechia spinulifera and Diostracus subalpinus (Negrobov, 1973). Unfortunately, D. subalpinus (described from the Baikal Lake environs) is the only Diostracus species with illustrated female genitalia.…”

“…Nevertheless, all these characters are rather variable and can be found in East Asian species of Diostracus. The monotypic Caucasian genus Lagodechia Negrobov & Tsurikov, 1996 was diagnosed also by variable characters of face, mesonotal setation, wing venation and morphology of abdomen (Negrobov & Tsurikov 1996). In addition, some characters of L. spinulifera were incorrectly described, as follows from the illustrations published by Grichanov et al (2011a, b …”

“…Describing a new genus, Negrobov & Tsurikov (1996) listed diagnostic characters that can be found in many Diostracus species (e.g., Saigusa 1984Saigusa , 1995Saigusa et al 1997;Yang et al 2011). The following characters of generic importance were listed in the original description of Lagodechia, but were not obvious on pictures made by O. Selivanova from type material (Grichanov et al 2011a, b): antennal scape has dorsal projection; distance between scutellum and 1 st tergum is 3 times as long as scutellum.…”

A New Species of the Genus Rhaphium (Diptera: Dolichopodidae) From Sakhalin Island

“…terminale igoriani Negrobov, 1986, and Rh. sachalinense Negrobov, 1979(Negrobov, 1976, 1979, 1986Yang et al, 2006).…”

“…Two species from the genus Rhaphium of the Kuril Islands have been described, namely Rh. gussakovskii Stackelberg et Negrobov, 1976 from Iturup Island and Rh. richterae Negrobov1977 from Kunashir Island 1976, 1977.…”