Egle longirostris ( Stein, 1907 )

Michelsen, Verner, 2009, Revision of the willow catkin flies, genus Egle Robineau-Desvoidy (Diptera: Anthomyiidae), in Europe and neighbouring areas, Zootaxa 2043 (1), pp. 1-76 : 20

3. Egle longirostris ( Stein, 1907)

Figs. 46–51 .

Chortophila longirostris Stein, 1907: 365 .

Hylemyia longirostris (Stein) ; Séguy 1937: 101.

Lasiomma longirostris [sic] (Stein); Hennig 1972: 430, text figs. 382, 383, pl. figs. 529, 604, 678); Hua 2006: 100.

Egle longirostris (Stein) ; Michelsen 1988: 277; Grossmann 1998: 328, 329, 331; Griffiths 2003: 2293.

Lasiomma longirostre (Stein) ; Dely-Draskovits 1993: 67.

Description. Male. Differs from E. myricariae as follows: Lower facial margin projected well beyond level of prominent fronto-parafacial angle. Parafacial accordingly broader on middle and lower parts. Haustellum longer and slenderer, 0.8–1.0 as long as fore tibia; palp accordingly considerably shorter than haustellum. Hind femur with pv-setae longer, almost as long as femoral depth where situated; hind tibia with short pvsetae more abundant. Terminalia ( Figs. 46–51 ) very similar to those of E. myricariae but differ most obviously in having: Surstyli apically with a tiny, slender process armed with a single thick seta; thick setae distally on apical extension of cerci much shorter; postgonite less pronouncedly bilobed. Female. According to Grossmann (1998): parafrontals broader, same width as frontal stripe; head in dorsal view with grey ocellar triangle well demarcated from blackish upper frontal stripe. Oviscap not examined, supposedly very similar to that of E. myricariae .

Material examined. CHINA [ ZMUC]: Qinghai: Zaidam, river Bomyn = Itschegyn , 1 male [syntype] late June 1895 ( V. I. Roborovsky) .

Biology. Unknown, but the species is so close morphologically to Egle myricariae that its larva predictably also attacks inflorescences of Myricaria , a genus represented by several species at high altitudes in the northern provinces of China, preferably growing in sandy places at rivers and lakesides ( Yang & Gaskin 2007).

Distribution. Only known by the type series from China: Qinghai: Zaidam.

Relationships. See above under ‘The Egle longirostris species group’

Figures

FIGURES 46–51. Egle longirostris, male terminalia [paratype: China]. 46, 47. Sternite V, ventral and lateral views. 48, 49. Hypopygium, caudal and lateral views. 50. Pre- and postgonites, lateral view. 51. Phallus, lateral view. Same scale.