Egle rhinotmeta ( Pandellé, 1900 )

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 : 51-53

18. Egle rhinotmeta ( Pandellé, 1900)

Figs. 144 , 146–151 , 194–196 .

Anthomyia (Chortophila) rhinotmeta Pandellé, 1900: 253 .

Hylemyia (Egle) collaris Ringdahl, 1933: 18 , 29. Synonymized by Hennig (1967b: 146).

Egle collaris (Ringdahl) ; Tiensuu 1938: 24; Ringdahl 1952: 176; Gäbler 1953: 484; Ringdahl 1958: 94; Ringdahl 1959: 272.

‘ Egle parvaeformis Schnabl’; Pont 1960: 148. Misidentification.

Egle rhinotmeta (Pandellé) ; Hennig 1967b: 146, plate figs. 135, 146, 153; Ackland 1970: 187, 192, figs. 19, 20; Hackman 1980: 132; Barták et al. 1990: 446; Dely-Draskovits 1993: 52; Chandler 1998: 166; Teschner 1999: 131; Petersen 2001: 184; Michelsen 2004; Komzáková 2006.

Description. Moderately small: wing length 3.3–4.2 mm.

Male. Parafacial in middle slightly narrower than postpedicel. Lower facial margin projected distinctly beyond fronto-parafacial angle. Genal setae in three irregular rows. Prealar seta three-quarters to fully as long as posterior notopleural seta. Proepisternals 1(–2); proepimerals 3–4. Lower calypter forming a distinct lobe fully half as long as upper calypter. Submedian tibial setae: Fore tibia with long and fine 1 pd- and 2 p-setae standing among longish setulae; mid tibia with 0 ad-, 2–3 pd- and 0–2 p-setae; hind tibia with 2–4 av and 0–6 short p-setae. Hind femur ( Fig. 144 ) with av- and pv-setae abundant on basal two-thirds and strikingly long on middle third. Tergite VI separate from syntergosternite VII+VIII. Terminalia ( Figs. 146–151 ): Structure of sternite V, surstyli and cerci readily distinguish males of the present species from other western Palaearctic species.

Female. Prementum at least on lateral parts extensively polished black, practically devoid of dusting. Parafacial in middle slightly narrower than postpedicel. Lower facial margin reaching distinctly beyond fronto-parafacial angle. Prealar seta three-quarters to fully as long as posterior notopleural seta. Proepisternals 1; proepimerals 2–4. Lower calypter a distinct lobe about half as long as upper calypter. Submedian tibial setae: fore tibia with 0 pd- and 1–2 p-setae; mid tibia with 1 ad-, 1–2 pd- and 1–2 p-setae; hind tibia with 2–4 short av-setae. Hind femur on basal half without distinct pv-setae; basal v-seta on hind femur distinctly shorter than subapical d-seta on hind tibia. Oviscapt ( Figs. 194–196 ):

Biology. Reared from female catkins of Goat willow ( Salix caprea L.) according to Gäbler (1953) and Hennig (1967b). In Denmark the adults are very abundant on flowering Grey willow ( Salix cinerea L.) and Goat willow ( Salix caprea L.), while in south Sweden they are equally abundant on Eared willow ( Salix aurita L.) and Creeping willow ( S. repens L.). Tiensuu (1938) also found it on Eared willow in Finland.

Material examined. European specimens seen from BRITISH ISLES, CZECH REPUBLIC, DENMARK, FINLAND, FRANCE, GERMANY, NORWAY and SWEDEN. SPAIN [ ZMUC]: Alicante: Nat. Park Font Roja, 3 males, 5 females 16.iii.2007 ( V. Michelsen); Beniaia , stream bed, 6 males, 3 females 18.iii.2007 ( V. Michelsen). MOROCCO [ ZMUC]: Tizi-n-Talrhemt pass, 1900m, 1 female 15.iv.1989 ( V. Michelsen); Azrou– Ifrane area , 1400–2000m, 1 male, 5 females 17–19.iv.1989 ( V. Michelsen). TURKEY [ ZMUC]: Bursa: Uludaǧ National Park , 1500–1800m, on flowering Salix , 1 female 9.v.1993 ( V. Michelsen) .

Distribution. A western Palaearctic species replaced by its alleged sister-species E. longipalpis (Malloch, 1920) in NE Asia and northern North America. A widespread, locally abundant species in Europe. Distribution as summarized by Michelsen (2004): Austria, British Isles, Czech Republic, Denmark, Finland, France, Germany, Latvia, Norway and Sweden. Presently recorded for the first time from Spain, Morocco and Turkey.

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

Figures

FIGURES 144–145. Egle spp., left hind leg. 144. E. rhinotmeta, male. 145. E. parva, male. Same scale.

FIGURES 146–151. Egle rhinotmeta, male terminalia. 146, 147. Sternite V, ventral and lateral views. 148, 149. Hypopygium, caudal and lateral views. 150. Pre- and postgonites, lateral view. 151. Phallus, lateral view. Same scale.

FIGURES 194–196. Egle rhinotmeta, female terminalia. 194. Oviscapt, lateral view. 195. Oviscapt, flat mounted. 196. Spermathecae. Different scales.