No. 64] DIPTEKA OF CONNECTICUT : TAXONOMY 209 



4. Antennae ( i' ) with three pectinations on each of flagellar segments 2 to 



9, each segment with a single branch on apical half, in addition to 

 the usual basal pair (Fig. 25, A) ; ovipositor greatly elongated, sabre- 

 like Tanyptera 



Antennae { S ) with two pairs of pectinations on each of flagellar segments 

 2 to 9, one pair being subbasal, tlie other subapical (Fig. 2.S, B) ; ovipositor 

 short and of normal tipuline structure Ctenophora 



5. Flagellar segments without verticils, the lower face of individual segments 



slightly produced near outer end, giving the organ a serrate appearance ; 



terminal flagellar segment abruptly more slender (Fig. 25, C) Prionocera 



Flagellar segments verticillate, simple or nearly so 6 



6. Abdomen of both sexes greatly elongated, somewhat resembling that of a 



dragonfly; verticils of outer flagellar segments very long and conspicuous; 



cerci of ovipositor with smooth margins Longurio 



Abdomen not so elongated (except in 2 of Tipula loiigivcntris which has 

 cerci serrate on outer margins) ; antennal verticils of moderate length 

 onlv 7 



7. Wings (Fig. 24, G) with Ks short and oblique in position, shorter than 



m-cH ; cell Mi sessile or very short-petiolate ; vein Mi arising opposite 

 or basad of origin of Mi+2; body-coloration highly polished, often black 



and yellow Nephrotoma 



Wings (Fig. 24, H) with Rs elongate, exceeding m-cu; cell M-s. petiolate ; 

 vein Mi arising distad of origin of M1+2; body-coloration almost always 

 opaque, pruinose or pollinose (polished only in nobilis and a few allies). 



Tipula jL^f 



Figure 25. Tipulinae ; details of antennae. 



A. Tanyptera frontalis (O.S.) ; S, basal five segments. 



B. Ctenophora apicata O.S.; $, basal five segments. 



C. Prinocera dimidiata (Lw.) ; $, in part, intermediate flagellar segments omitted. 



Dolichopeza Curtis 



1825. DoVu'hoiJcza Curtis; Brit. Ent., p. 62. 



An extensive genus of flies, with representatives in all major 

 regions. The reasons for uniting Dolichopeza and Oropeza into a 

 single genus have been given in another report (Alexander, Philip- 

 pine Journ. Sci., 46:269-270; 1931). 



The venation of the radial field is quite like that of the genus 

 Liinonia, except that no species of Dolicho'peza is known where the 



