Egle minuta (Meigen, 1826)

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 : 33

The Egle minuta section

This section of Egle , as first delimited by Griffiths (2003), contains the majority of species including the type species, E. parva Robineau-Desvoidy. They are generally small to very small species, several with a wing length below 2.5mm and thus ranging among the smallest within the family Anthomyiidae . The monophyly of the Egle minuta section is well supported by the specialized labella ( Figs. 12, 13 ): Each labellum with only 6–7 short pseudotracheae, but with numerous prestomal teeth arranged in columns in a large basal “tooth plate”; first tooth in each column is strikingly larger than the following ones. Further modifications are restricted to the females, viz. the thickened and strongly musculated haustellum ( Fig. 4 ), and the single-cuspid enlarged prestomal teeth ( Fig. 13 ). Further autapomorphies of the female oviscapt ( Figs. 194 , 200 ): apical segments distal to segment VII notably slender and directed upwards; (2) tergite VIII without hind marginal setulae.

Figures

FIGURES 6–13. Egle spp., labella, pseudotracheae, prestomal teeth. 6, 7. E. concomitans, female. 8, 9. E. ciliata, female. 10. E. myricariae, male. 11. E. pilitibia, female. 12. E. rhinotmeta, male. 13. E. rhinotmeta, female. Different scales.

FIGURES 1–5. Egle spp., proboscis. 1. E. concomitans, male. 2. E. ciliata, female. 3. E. ciliata, male. 4. E. parva, female. Arrow: Apodeme on basal part of labial gutter. 5. E. parva, male. Same scale.

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

FIGURES 200–202. Egle parva, female terminalia. 200. Oviscapt, lateral view. 201. Oviscapt, flat mounted. 202. Spermathecae. Different scales.