NO. 3562 MALAYAN FLIES—STEYSKAL i 
Legs (figs. 2b-d): ex, C-shaped, with heavy pilose ventral projection 
(fig. 2d); f; with strong triangular median projection and without 
basal hairs or bristles (figs. 2c, d); f: and f; with bristles; f, moderately 
swollen (fig. 26); ¢; with ventral bristle near tip, latter shining black, 
dilated into 2 roundish tubercles and with 3 curved, preapically com- 
pressed and broadened bristles (fig. 2b). 
Abdomen smooth and shining; segment 8 strongly constricted 
basally; segment 2 without strong bristles; segment 3 and posterior 
segments with well-developed bristles, most of which are approximately 
half as long as apical epandrial pair (fig. 2f). Postabdomen black, 
processes of epandrium each ending in pair of slender, mesally directed 
prongs. 
Houotyrr.—Male, Malaya, Selangor Gombak Forest Reserve, tree 
platform, Oct. 20, 1962 (H.E. McClure), USNM 67579. 
This species is evidently close to Dicranosepsis bicolor (Wiedemann), 
a taxon including a number of entities that Hennig has considered 
to be members of a “‘Formengruppe.”’ The peculiar modification of 
t, in D. coryphea has not been mentioned in connection with any of the 
other forms or related species. 
The genus Dicranosepsis Duda has been placed by Hennig as a 
synonym or possible subgenus of the neotropical genus Palaeosepsis 
Duda, but the relationships and rank of these taxa need further 
study and at present I prefer to consider them as distinct genera. 
Family Muscidae 
Dichaetomyia prolixa (Walker), new combination 
Aricia proliza Walker, 1864, Journ. Proc. Linn. Soc. London, vol. 7, p. 218. 
Spilogaster proliza (Walker).—Stein, 1901, Zeits. Hym. Dipt., vol. 4, p. 205. 
Mydaea proliza (Walker).—Stein, 1918, Ann. Mus. Nat. Hung., vol. 16, p. 185.— 
Séguy, 1937, Genera insectorum, fasc. 205, p. 289 (in list of “species dubiae 
vel incerti generis’). 
One female, Selangor Gombak Forest Reserve, tree platform, Dec. 
23, 1962, agrees well with Walker’s description. The species is rather 
characteristically colored, mesonotum reddish with broad central 
blackish stripe stopping at yellowish scutellum, abdomen largely 
yellowish with posterior margins of tergites 3 and 4 rather broadly 
blackish, and tergite 5 with a pair of well-developed, oval, black lateral 
spots, legs with all f and ¢, and ¢ yellowish, and all tarsi blackish; 4 
postsutural dc bristles. 
Although clearly a Dichaetomyia, the species is not to be found in 
Malloch’s keys (1925a, p. 324; 1925b, p. 323) nor in his key of 1929 
(p. 401), where it runs to D. rufa (Stein), a species with a wholly 
reddish mesonotum. 
