NO. 3562 MALAYAN FLIES—STEYSKAL 5 
5 (8). Two strong equal fo; anterior nipl strong; 4th wing vein strongly bowed 
downward before ta, Ist basal cell at widest part therefore nearly 
twice as wide as length of ta; occiput and prothorax weakly developed. 
6 (7). Stump veins on 8rd and 4th veins; anterior de strong; f; of @ with small 
spinules below... . .. . . . Stypocladius Enderlein 
7 (6). Stump veins lacking; antenies a: ae small; f; of o& with very heavy 
spines on small tubercles. . . . .. . . Nipponerius Coquillett 
8 (5). Only one weak fo and sometimes anterior thereto another rudimentary 
one; anterior ntpl usually very weak; 4th wing vein only gently bowed 
basad of ta, Ist basal cell therefore only slightly wider than length 
of ta. 
9 (10). Occiput and prothorax greatly lengthened, occiput nearly or quite 
aslongaseye.... . . . . Gymnonerius Hendel 
10 (9). Occiput and prothorax little levethened! occiput much shorter than eye. 
Paranerius Bigot 
Neither Aczél nor I have been able to place Protonerius Meijere 
(1924, p. 29) in our keys. 
Subfamily Telostylinae 
This subfamily is distinguished from the Neriinae by the lack of a 
distinct dorsal expansion of the facial plate at the bases of the antennae. 
The genus Telostylus Bigot, 1859 (type: T. binotatus Bigot, 1859) is 
distinguished from the two other known genera by having only 1 nétpl 
and 1 (prescutellar) de, a long and pointed 3rd antennal segment, and 
by the basitarsus, of the o sometimes being swollen. 
Nobody so far has had the temerity to offer a key to Telostylus. 
The following one is offered as a preliminary contribution since it is 
constructed largely from descriptions—although TJ. philippinensis 
Cresson has been placed from examination of the type specimen in 
the USNM, and 7. niger Bezzi, from material in the USNM collected 
by Baker and apparently part of the original lot. Aczél’s statement 
(1955, p. 32) that 7. benotatus Bigot is known only from Borneo is 
erroneous, since the original description cites Celebes only, and Aczél’s 
redescription from Borneo specimens must therefore be suspect. 
Specimens of 7. binotatus that agree well with Bigot’s description and 
the concept here presented were taken in the Selangor Gombak 
Reserve by McClure on October 21, 1961 and October 27, 1962. 
Key to Species of Telostylus Bigot 
1 (4). Mesofrons between the eyes dull black all the way across; mesonotum, 
scutellum, and pleura largely or wholly black; halter yellow. 
2 (3). Legs yellow with preapical dark bands; 3rd antennal segment largely 
yellowish; dull black supra-alar spot present; wing length 3.75 mm; 
basitarsus, of ¢’ not broadened (Philippine Islands) .. T. niger Bezzi 
3 (2). Legs black; 3rd antennal segment black; mesonotum wholly shining 
black; wing length 5.5 mm; ? @ basitarsus, broadened (type ?, Sumatra 
andeninailand) ieee. tet eens see eee he apicatus Edwards 
