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

57, 1

Alexander: Tipulide from Eastern Asia, XXV

117

number, most persistent as a loose series on R4+5; in some
species, as gavronskii, the trichia are more abundant.
Abdomen often depressed. Male hypopygium of simple structure; tergite and sternite separate; eighth sternite unarmed.
Terminal abdominal segments in female abruptly narrowed, the
ovipositor very small; cerci moderately elongate and only weakly
sclerotized, with smooth margins; hypovalvae small and compressed.
The subgenus is distinguished from Vestiplex chiefly by the
long, pale body vestiture, the unusually glabrous nature of the
wing veins, and the structure of the ovipositor. Tipula tundrensis is aberrant in the subgenus and may possibly be better
referred to Vestiplex despite the smooth-margined cerci. The
species are chiefly far northern in their distribution.
Species of the subgenus Arctotipula.
1. PALJEARCTIC EASTERN ASIA
gavronskii Alexander. popoffi Alexander.
hirtitergata Alexander. tundrensis Alexander.
14. Subgenus VESTIPLEX Bezzi
Tipula (Vestiplex) BEZZI, Ann. Mus. Civ. Nat. Stor. Genova 51 (1924)
230-231.
Tipula (Vestiplex) EDWARDS, Ann. & Mag. Nat. Hist. X 8 (1931)
79-80.
Tipula (Vestiplex) ALEXANDER, Philip. Journ. Sci. 52 (1933) 396 -398.
Type.-Tipula cisalpina Riedel. (Western Palaearctic.)
Antennae short to elongate, in males of many species with
flagellar segments very strongly incised; verticils of moderate
length. Frontal prolongation of head elongate; nasus present
or lacking.
Thoracic pleura usually glabrous, in cases (as arctica) with
numerous setre on sternopleurite. Tibial spur formula 1-2-2;
claws (male) simple or with basal tooth (as arctica); legs
usually stout, especially in females. Squama naked; branches
of M with sparse to more abundant trichia. Venation: R1+2
entire; Rs long, fully one-half longer than m-cu or often considerably longer; m-cu at or close to fork of M3+4 and approximately opposite one-third to one-half the length of cell 1st
M2.
Male hypopygium in many species with the posterior half of
tergite forming a shallow saucer, in some species heavily sclero