Egle suwai, Michelsen, 2009

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 : 69

22. Egle suwai sp. nov.

Figs. 170–175 , 199 .

‘ Egle podulparia Suh & Kwon’; Petersen 2001: 184 (in part). Misidentification.

Etymology. Named after Masaaki Suwa (Sapporo, Japan) in recognition of his outstanding taxonomic work on East Palaearctic and Oriental Anthomyiidae .

Description. Very similar to Egle minuta but different as follows:

Male. Terminalia ( Figs. 170–175 ): Sternite V with 0–1 setula postero-laterally on basal plade. Epandrium without setulae on lateral parts (as in E. parva and E. lyneborgi ). Surstyli narrow-based alongside margins of cerci (as in E. parva and E. lyneborgi ). Apical extension of cerci broader, not constricted on basal part. Pregonite wider than long. Phallus with smaller and apically less inflated epiphallus.

Female. Specimens presently identified as Egle suwai are almost indiscernible from females of E. lyneborgi . Only the oviscapt ( Fig. 199 ) reveals a few minor differences: Sternite VII as narrow as in E. minuta , but sclerotized even on middle section as in E. lyneborgi . Hypoproct more reduced than in E. minuta , but less so than in E. lyneborgi and with 3–4 setulae.

Material examined. Type material [ ZMUC]: DENMARK: S Jutland: Sønderskoven, Als , 1 male (holotype) 6.iv.1982 ( V. Michelsen). Funen: Middelfart, 2 males 19–22.iv.1984 ( T. Pape). NE Zealand: Kalvebod Faelled, 14 males, 1 female 18.iii.1990 ( V. Michelsen); Utterslev Mose, 1 male 29.iv.1984, 1 male 14.v.1984, 3 males 1.iv.2008, 2 males 28.iv.2008, 1 male, 1 female 29.iv.2008 ( V. Michelsen); Smør-/ Fedtmosen, 2 males 7.iv.1981 ( V. Michelsen) . SWEDEN: Skåne: Klagshamnsudde , 2 males, 4.iv.2008 ( V. Michelsen). Åbrolla, Osby, 1 male 3.iv.2007 ( V. Michelsen). Småland: Kärshult, Sporda, 1 male 2–3.v.2008 ( V. Michelsen) .

Biology. The adults have been taken in Denmark on flowering Grey willow ( Salix cinerea L.).

Distribution. Presently only known by the type material from Denmark and south Sweden, but Egle suwai has obviously been confused with other species of the E. minuta species group. A wider distribution in Europe and possibly elsewhere can be expected.

Relationships. Egle suwai belongs to the E. minuta species group within the E. minuta section (see above).

Figures

FIGURES 170–175. Egle suwai, male terminalia [paratype: Denmark]. 170, 171. Sternite V, ventral and lateral views. 172, 173. Hypopygium, caudal and lateral views. 174. Pre- and postgonites, lateral view. 175. Phallus, lateral view. Same scale.

FIGURES 197–199. Egle spp., female terminalia. 197. E. minuta, oviscapt, flat mounted. 198. E. lyneborgi, oviscapt, flat mounted. 199. E. suwai, distal oviscapt, flat mounted [paratype: Denmark]. Same scale.