The Philippine journal of science. [Vol. 57, no. 1]

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84 The Philippine Journal of sczence 1935
6. Anterior vertex produced, a slender simple lobe; pleurotergal tubercle
large, with velvetlike pubescence on dorsal face; body very stout; often
with setse on dorsal sternopleurite................................ 1. Brithura.
Anterior vertex without such a lobe, at most merely protuberant; pleurotergite not elevated into a tubercle; body relatively slender; sternopleurite glabrous (except in some species of Arctotipula, Vestiplex,
and Lunatipula).................................................................... 7.
7. Body coloration contrasted black and orange, the thorax either chiefly
velvety black or else a shade of orange or reddish; ovipositor with
short fleshy valves; male hypopygium with a single complex dististyle.
6. Formotipula.
Body coloration not contrasted black and orange as above; ovipositor
with elongate sclerotized cerci (except in Arctotipula and some Lunatipula species); male hypopygium with two dististyles................ 8.
8. Legs very elongate, with snowy-white rings on femora, tibiae, or tarsi.
12. Tipulodina.
Legs of moderate length, without white rings................. -.................... 9.
9. Fore tibiae without spurs.................................... 10. Indotipula.
Fore tibiae with a single spur................................................. 10.
10. Wings with m-cu unusually long, so cell M4 is very deep and much wider
at base than at margin; vein Cu1 not conspicuously constricted at
point of insertion of m-cu; male hypopygium with a compressed median blade on tergite or else with caudal margin notched.
5. Schummelia.
Wings with m-cu of moderate length, so cell M4 is short and but little
wider at base than at margin; Cu1 more constricted or shirred at
point of insertion of m-cu; male hypopygium with tergite not extended into a median compressed blade (where with a median lobe,
as Tipula, Yamatotipula, Acutipula, and Indotipula, this depressed
and set with microscopic spicules at and near apex).................... 11.
11. Ovipositor with hypovalvse greatly reduced, the cerci correspondingly
large, heavily sclerotized, placed horizontally and with the outer
margins serrate; male hypopygium with the caudal portion of tergite often with a shallow, blackened, saucerlike portion, or else completely divided on midline by pale membrane; many species with
an acute spine at caudal portion of basistyle; claws (male) simple.
14. Vestiplex.
Ovipositor with well-developed hypovalvae; cerci either reduced and
somewhat fleshy (Arctotipula and some Lunatipula) or, usually, elongate and slender, the margins quite smooth; male hypopygium without a tergal saucer and only in rare instances divided by pale
membrane; basistyle not or only rarely (Oreomyza) produced at
apex into an acute spine; claws (male) usually with a basal tooth_. 12.
12. Male hypopygium with sclerites fused into a continuous ring; region of
tergite almost invariably produced into a median simple or bifid
lobe that is set with microscopic spicules; claws (male) toothed.... 13.
Male hypopygium with ninth tergite and sternite separated by a suture
or by pale membrane; region of tergite not produced, usually emarginate or notched; claws (male) toothed or simple............................ 15.