Colobaea montana, Knutson & Orth, 1990

Bratt, Albertus D., Knutson, Lloyd V., Murphy, William L. & Daniels, Anthony A., 2020, Biology, immature stages, and systematics of snail-killing flies of the genus Colobaea (Diptera: Sciomyzidae), with overviews of aspects of the tribe Sciomyzini, Zootaxa 4840 (1), pp. 1-64 : 26

Colobaea montana, Knutson & Orth, 1990

Map 11

Colobaea montana has been found only in the state of Montana, USA. With a mostly matt black frons and R 1 terminating considerably basad of the level of crossvein r-m, C. montana is more similar to C. americana , C. nigroaristata, C. punctata , and related species than it is to C. bifasciella and C. canadensis . Colobaea montana is most similar to C. nigroaristata , males of which can be separated readily by the internal structures of their terminalia and most notably the shape of the posterior surstylus (see Rozkošný 1984a). The shape of the posterior surstylus, short rather than long dorsobasal setulae on the arista, and lack of silvery tomentum along the margin of the eye distinguish C. montana from C. americana , the only other species of Colobaea likely to occur with C. montana . Nothing is known about its biology or immature stages.

Figures

MAP 11. Geographic range of Colobaea montana Knutson & Orth.