Schizohelea, Kieffer, 1917

Szadziewski, Ryszard, Dominiak, Patrycja, Rumišek, Mario, Neinhuis, Christoph, Wanke, Stefan & Rupp, Thomas, 2024, Predatory midges of the genus Schizohelea Kieffer, 1917 in Europe and North Africa (Diptera: Ceratopogonidae), Zootaxa 5514 (2), pp. 169-187 : 183-184

Key for identification of extant Schizohelea

Males

1. Hind femur with ventral spines ( Fig. 11d )............................................... S. armata ( Remm, 1993)

-. Hind femur unarmed................................................................................... 2

2. Gonostylus swollen distally ( Fig. 10d )............................................... S. spathulata ( Remm, 1993)

-. Gonostylus slender.................................................................................... 3

3. Parameres without a flap, slender, with singular, long, pointed, ventrally curved apex ( Fig. 10c )..... S. pekae ( Remm, 1980)

-. Parameres with a flap, stout or slender..................................................................... 4

4. Parameres slender ( Fig. 3b )............................................................................. 5

-. Parameres stout ( Fig. 6d )............................................................................... 7

5. Aedeagus with ventral plate armed with teeth ( Fig. 5h ). Black apical spine of paramere short ( Fig. 5e ).................................................................................................. S. incerta ( Clastrier, 1963)

-. Aedeagus without ventral plate armed with teeth ( Fig. 3c ). Black apical spine of paramere long ( Fig. 3b )................ 6

6. Aedeagus with two long submedian apical projections ( Fig. 3c )........................... S. leucopeza ( Meigen, 1804)

-. Aedeagus with single short and broad roof-like apicomedian expansion ( Fig. 10b )............ S. lampropeza ( Remm, 1967)

7. Gonostylus straight ( Fig. 8b ). Aedeagus with dentate ventral plate ( Fig. 8e )......................................................................................... S. clastrieri Szadziewski, Dominiak, Rumišek et Rupp , sp. nov.

-. Gonostylus C-curved. Aedeagus without dentate ventral plate.................................................. 8

8. Gonostylus with forked apex ( Fig. 9c ). Aedeagus with two large, beak-like sublateral apical projections ( Fig. 9f )............................................................ S. withersi Szadziewski, Dominiak, Rumišek et Rupp , sp. nov.

-. Gonostylus with simple apex. Aedeagus with single strong median apical plate armed with distinct teeth ( Fig. 6e )........................................................... S. algeriana Szadziewski, Dominiak, Rumišek et Rupp , sp. nov.

Figures

FIGURE 3. Schizohelea leucopeza (Meigen, 1804), male (a–c) and female genitalia (d–f): a—male genitalia, ventral view; b— parameres; c—aedeagus; d—spermathecae; e—abdominal sternite 9; f—adominal sternite 8 with internal sclerites underneath.

FIGURE 5. Schizohelea incerta (Clastrier, 1963), male genitalia: a—ventral view; b—lateral view; c—gonocoxal expansions; d, e—parameres; f–h—aedeagus.

FIGURE 6. Schizohelea algeriana Szadziewski, Dominiak, Rumišek et Rupp, sp. nov., male genitalia: a—ventral view; b— gonostylus; c—gonocoxal expansions; d—parameres; e—aedeagus.

FIGURE 8. Schizohelea clastrieri Szadziewski, Dominiak, Rumišek et Rupp, sp. nov., male genitalia: a—ventral view; b— gonostylus; c—gonocoxal expansions; d—parameres; e—aedeagus.

FIGURE 9. Schizohelea withersi Szadziewski, Dominiak, Rumišek et Rupp, sp. nov., male genitalia: a—ventral view; b, c—gonostylus; d—gonocoxal expansions; e—parameres; f—aedeagus.

FIGURE 10. Male genitalia of Schizohelea described by Remm (modified drawings from Remm 1967, 1980, 1993): a—S. armata (Remm, 1993) from Kunashir Islands; b—S. lampropeza (Remm, 1967) from Georgia; c—S. pekae (Remm, 1980) from Kyrgyzstan; d—S. spathulata (Remm, 1993) from Armenia.

FIGURE 11. Schizohelea described by Remm (modified drawings from Remm 1967, 1980, 1993): S. lampropeza (Remm, 1967) (b, e, f, h), S. pekae (Remm, 1980) (a, c, g), S. armata (Remm, 1993) (d); a—male flagellum; b, c—female maxillary palp; d—legs of male; e—female hind claw; f—spermathecae; g—female genitalia; h—female sternite 9.