Xenopygina

Mohrig, Werner & Kauschke, Ellen, 2016, New Black Fungus Gnats (Diptera, Sciaridae) of North America Part I. Genus Scatopsciara Edwards, 1927, Zootaxa 4150 (4), pp. 401-435 : 403

Key B (Subgenus Xenopygina )

1 Gonostylus with large lobe on inner side at base of spines...................................................... 2

- Gonostylus without lobe on inner side..................................................................... 4 2 Lobe very long and near the middle............................................ Sc. hastata (Johannsen) , ( Fig. 9 A ) - Lobe distinct, but not unusually long...................................................................... 3 3 Lobe near the apex, with 3 spines................................................. Sc. paradoxa (Frey) , ( Fig. 9 B) - Lobe in the middle of gonostylus, with 2 spines.................................. Sc. subfratercula sp. n. ( Fig. 9 C–F) 4 Gonostylus with spines in the middle of inner side (with or without apical spines); c often short, = ½ w................. 5 - Gonostylus with a few spines on or near the apex; c longer ½ w................................................ 14 5 Gonostylus with one spine in the middle of inner side only............... Sc. ventrospinula Mohrig & Mamaev ( Fig. 15 C) - Gonostylus with more than one spine in the middle of inner side................................................6 6 Gonostylus with 2–5 spines, spines in the middle of inner side unpaired; apex more or less lobe-like divided, gonostylus con-

Figures

FIGURE 9. A. Scatopsciara (Xe.) hastata (Johannsen), after Mohrig et al. (2013), Fig. 54. B. Scatopsciara (Xe.) paradoxa (Frey), after Menzel & Mohrig (2000), Fig. 472. C – F. Scatopsciara (Xe.) subfratercula sp. n. C. Gonostylus, ventral view. D. Arrangement of apical spines on gonostylus. E. Part of hypopygium, ventral view. F. Apex of fore tibia.

FIGURE 15. A – B. Scatopsciara (Xe.) inesae sp. n. Holotype. A. Hypopygium, ventral view. B. 4 th flagellomere. C. Scatopsciara ventrospinula Mohrig & Mamaev. Specimen from USA (Arizona). Part of hypopygium.