Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 97. (Budapest 2005)

Papp, L.: New species of Lygistorrhinidae (Diptera) from the Oriental Region

Male tergite 8 (Fig. 3) with the usual dorsal process, sternite 8 with a reclinate narrow medial part. Male tergite 9 (Figs 1-2) scoop-like, its basal process forms 7/8 of a ring. Cerci and hypoproct short blunt and hairy, with a limited number of medium-long but not thick macrochaetae. Gonocoxites fused on a rather short section ventrobasally. Their medial process is very thin, long and thread-like. GonoFigs 1—4. Lygistorrhina chaoi L. PAPP, male, postabdomen and genitalia. 1 = tergite 9 and proctiger, lateral view, 2 = basal part of tergite 9, higher magnification, dorsal view, 3 = tergite 8 and sternite 8, lateral view (most of macrochaetae omitted), 4 = gonostylus, in view of the broadest extension of its apical part. Scales: 0.2 mm for Figs 1, 3, 0.1 mm for Figs 2, 4