Molobratia youngi Geller-Grimm

Young, Charles L. & Hradský, Milan M., 2008, Robber flies (Diptera: Asilidae) of South Korea. Parts VI – VIII. South Korean species of the Subfamilies Dasypogoninae, Dioctriinae and Trigonomiminae, Zootaxa 1876, pp. 1-18 : 4-5

Molobratia youngi Geller-Grimm

( Figs 26, 27)

Molobratia youngi Geller-Grimm, 2005: 581 .

Medium sized dark reddish flies, 14 mm. Two of the five species recorded from Japan, Molobratia kanoi Hradský, 1980 and M. nipponi Hradský, 1980 closely resemble M. youngi in external characters (face, leg color, length of bristles on fore and hind tibiae) and in the male genitalia. The insertion of M. youngi into the existing two keys for external characters and male genitalia ( Nagatomi et. al. 1989: 968) distinguishes them ( Geller-Grimm 2005).

A: Key to external characters of Molobratia ( Nagatomi et. al. 1989). Molobratia youngi inserted into couplet 4.

4 In sigmoid terminal spine of fore tibia, apical black part over 1/2 as long as basal yellowish brown part.5 - In sigmoid terminal spine of fore tibia, apical black part less than 1/2 as long as basal yellowish brown part .............................................................................................................................................................4b 4b Apical and posterior portions of wing brownish tinged. Tergites yellowish brown; anterior margins of tergites 2–6 with distinct tomentose spots at posterior angles ...................................... M. nipponi Hradský - Wing also anterior brownish tinged. Tergites l and 5–7 black, 2–4 reddish with black spots at posterior angels; spots of silvery tomentum at posterior angles of tergites 4–6 ................... M. youngi Geller-Grimm

B: Key to the male genitalia of Molobratia ( Nagatomi et. al. 1989). Molobratia youngi inserted into couplet 1.

1 Posteroventral fin of aedeagus present. Cerci fused (except their apical portions). Horizontal branch of gonocoxite with one minute apical process..................................................................................................2 - Posteroventral fin of aedeagus absent. Each cercus apparently separated. Horizontal branch of gonocoxite with two thicker apical processes ...............................................................................................................1b l b Apex of aedeagus curved distinctly upwards .................................................................... M. kanoi Hradský - Apex of aedeagus curved weakly upwards............................................................. M. youngi Geller-Grimm

The reader is directed to Geller-Grimm (2005) for the full species description. See discussion below and the table of prey and seasonality.