Austrohelea, Wirth & Grogan, 1988

Ronderos, Maria M., Spinelli, Gustavo R. & Grogan, Willliam L., 2017, The Neotropical species of the predaceous midge genus Austrohelea Wirth & Grogan (Diptera: Ceratopogonidae), Zootaxa 4276 (2), pp. 255-269 : 256

publication ID	https://doi.org/10.11646/zootaxa.4276.2.7
publication LSID	lsid:zoobank.org:pub:72DC4B80-2CFE-414F-AA86-DAA73618D977
DOI	https://doi.org/10.5281/zenodo.6017415
persistent identifier	https://treatment.plazi.org/id/D97387A8-9D31-FF96-FF44-88D7FA71889D
treatment provided by	Plazi
scientific name	Austrohelea
status

Treatment

Key to the Neotropical species of Austrohelea View in CoL

1 Males............................................................................................... 2

- Females............................................................................................. 4

2 Wing membrane mostly pale, lightly infuscated between costa-radius and radius-medius ( Fig. 23 View FIGURES 20 – 24 ); hind tibia with 3 large subapical spines ( Fig. 22 View FIGURES 20 – 24 ); aedeagus heavily sclerotized with broad, long basal arms with rounded apices ( Figs. 24 View FIGURES 20 – 24 , 34 View FIGURES 29 – 34 ); basal apodemes of parameres very broad with shallow obtuse angle between anterior, posterior arms ( Figs. 24 View FIGURES 20 – 24 , 33 View FIGURES 29 – 34 )... A. spinosa View in CoL n. sp.

- Wing mostly or entirely infuscated; hind tibia without large subapical spines; aedeagus lightly or heavily sclerotized with relatively short basal arms with blunt apices; basal apodemes of parameres slender to moderately broad with deep acute angle between anterior, posterior arms.......................................................................... 3

3 Wing membrane uniformly lightly infuscated ( Fig. 14 View FIGURES 13 – 15 ); aedeagus with very shallow basal arch, basal arms slender slightly curved, distal portion lightly sclerotized with rounded apex ( Figs. 15 View FIGURES 13 – 15 , 32 View FIGURES 29 – 34 ); basal apodemes of parameres slender, anterior arm twice as long as posterior arm ( Figs. 15 View FIGURES 13 – 15 , 31 View FIGURES 29 – 34 )...................................................... A. sirii View in CoL n. sp.

- Wing membrane mostly darkly infuscated ( Fig. 3 View FIGURES 1 – 4 ); aedeagus with deep triangular basal arch, basal arms broad greatly recurved with blunt apices, distal portion heavily sclerotized ( Figs. 4 View FIGURES 1 – 4 , 30 View FIGURES 29 – 34 ); basal apodemes of parameres with broad posterior arm that is twice as long as anterior arm ( Figs. 4 View FIGURES 1 – 4 , 29 View FIGURES 29 – 34 ).......................................... A. shannoni (Wirth & Blanton)

4 Small species (wing length 1.16 mm); wing membrane darkly infuscated with dense, coarse macrotrichia ( Fig. 18 View FIGURES 16 – 19 ); palpal segment 3 with large apical sensory pit ( Fig. 17 View FIGURES 16 – 19 ); spermathecae pyriform, unequal, with short, broad, truncate necks ( Fig. 19 View FIGURES 16 – 19 )............................................................................................. A. sirii View in CoL n. sp.

- Large species (wing length 1.57‾ 1.85 mm); wing membrane darkly or lightly infuscated with sparse to moderately dense thin macrotrichia; palpal segment 3 without sensory pit; spermathecae ovoid, subequal.................................. 5

5 Hind femur greatly swollen; spermathecae with short broad necks ( Fig. 28 View FIGURES 25 – 28 )........................... A. spinosa View in CoL n. sp.

- Hind femur slightly swollen ( Fig. 6 View FIGURES 5 – 12 ); spermathecae with moderately long slender necks ( Fig. 12 View FIGURES 5 – 12 )................................................................................................... A. shannoni (Wirth & Blanton)