Holarctic distributions in the genus Bibio (Diptera: Bibionidae)

Abstract

Holarctic distributions in the genus Bibio, minus the Bibio clavipes-group, are discussed. The species Bibio brunnipes (Fabricius), Bibio rufipes (Zetterstedt) and Bibio siebkei Mik are found to have Holarctic distributions. Bibio fulvipes (Zetterstedt), Bibio fumipennis Walker, Bibio tenellus Hardy, and Bibio rufitibialis Hardy are synonymized with Bibio brunnipes. Bibio velorum McAtee and Bibio columbiaensis Hardy are synonymized with Bibio rufipes. Bibio labradorensis Johnson and Bibio monstri James are synonymized with Bibio siebkei. The relationship between the Palaearctic Bibio pomonae (Fabricius) and the Nearctic Bibio holtii McAtee and Bibio bryanti Johnson is discussed. Bibio strobli Duda is tentatively retained as a good species. Diagnoses are given for each species and illustrations of the male fore tibia, hypopygia and hind leg and the female terminalia and head are given for comparison. The ecological preferences and flight periods of each species are commented on.

A new species of the genus Bibio (Diptera, Bibionidae) from the tundra of the Asian part of Russia

“…Differences are also found in the structure of the gonostylus: the emargination of the epandrium in the new species is parallel-sided and rounded at the base; the lobe is large and widely rounded at the apex. In B. holtii McAtee, the emargination is though rounded at the base but conical, and the lobe is distinctly narrowed toward the apex (Fitzgerald and Skartveit, 1997: fig. 27).…”

“…In Norway, the species occurs on the Hardangervidda Mountain Plateau (Skartveit and Greve, 1995), which is the largest highmountainous plateau of Europe (the height is 1200-1600 m a.s.l.). In the territory of North America, the species is known from Canada and the USA, including Alaska (Fitzgerald and Skartveit, 1997).…”

“…B. brunnipes (Fabr. ): the flagellum is 7-segmented (occasionally a small 8th segment also present), the thorax is covered with golden pubescence, the epandrium forms a wide parallel-sided emargination, and its lobes are widely rounded apically (Fitzgerald and Skartveit, 1997).…”

“…in the territory of Norway (Skartveit, 1995;Skartveit and Greve, 1995;Fitzgerald and Skartveit, 1997) were published, but the information about the biotopes is fragmentary: B. brunnipes (Fabr.) was recorded from the alpine and subalpine zones in birch and willow stands, B. rufipes (Zett.)…”

“…In Russia, the following species are known from the tundra zone: B. siebkei Mik (Novaya Zemlya) (Fitzgerald and Skartveit, 1997), B. pomonae (Fabr.) and B. rufipes (Zett.)…”