No. 64] DIPTERA OF CONNECTICUT : TAXONOMY 241 



Subgenus Nippotipula Matsumura 



1916. Nippotipula Matsumura; Thous. Ins. Japan. Add. 2:457-458. 

 1931. Nippotipula Edwards; Ann. Mag. Nat. Hist., (10) 8:77. 



Rs very long, fully twice tm-cu^ the latter close to midlength of 

 cell 1st Ml, and almost always uniting with iI/3+4 some distance before 

 its fork; in rare cases, ni-cu at fork of il/a + i/ Bs in direct alignment 

 with ^4+5, the basal deflection of the latter lacking. M and branches 

 naked. Squama with a group of setae. Tibial spur formula 1-2-2. 

 Setae on sternopleurite and anepisternum. Pleurotergal tubercle Avell- 

 developed. Scutal lobes with two darkened areas that are ringed 

 with pale. The single regional species is one of the largest and finest 

 of all our species of Tipulidae. 



Tipula (Nippotipula) abdominalis (Say) 



1823. Ctenophora ahdorn'rnalis Say; Journ. Acad. Nat. Sci. Phila- 

 delphia, 3 : 18. 

 1848. Tipula, albilata Walker ; List Dipt. Brit. Mus., 1 : 65. 



Figs.— Needham, 23rd Kept. N. Y. St. Ent. lor 1907, pi. 35, fig. 2 (ad. 9 ) ; 

 1908. Alexander, Cfls. N. Y., 1, pi. 45, fig. 210 (wing) ; 1919. Dickinson, Cfls. 

 Wise, p. 232, fig. 141 (wing), p. 248, fig. 175 (hyp.) ; 1932. 



Praescutum and scutum with velvety-black areas that are narrow- 

 ly ringed with light gray. Pleura longitudinally striped with gray 

 and brownish black. Femora whitish, darkened on outer half, the 

 tips narrowly blackened, preceded by a narrow, dirty white ring; 

 tibiae darkened, with a narrow whitish ring at extreme base. Wings 

 subhyaline, clouded with gray; costal border with three larger brown 

 areas, the first at arculus, second at origin Rs, the ocelliform third in- 

 volving the stigma and extensive seams on anterior cord and outer 

 end of Rs; a more or less developed cloud midway between the first 

 two dark areas; a series of small marginal spots at ends of longitu- 

 dinal veins. Position of m-cu variable. Abdominal tergites deep or- 

 ange, bordered sublaterally with black. $. L. 25-30 mm.; w. 22-25 

 mm. 5 . L. 35-38 mm. ; w. 27-30 mm. 



(May-July ; Aug. -Sept. ; apparently two generations, more numerous in late sum- 

 mer.) Ont., Que., Nfd., N. B., N. S., Me., N. H., Vt., Mass., N. Y., Pa., westw. to 

 Mich., Wise, and Kan., southw. to S C, Ga., Ky., Tenn. and Fla. (to Marion Co.). 



Connecticut.— New Haven, Aug. 28, 1903 (B.H. W.); N. Branford, July 3, 1931 

 (G. H. P.) ; Storrs. 



Subgenus Vestiplex Bezzi 



1924. Vestiplex Bezzi; Ann. Mus. Civ. Stor. Nat. Genova, 51:230. 



Nasus present or lacking. Rs long, fully one-half longer than 

 m-cu, in cases even longer. Squama naked; branches of 31 with trich- 

 ia. Tibial spur formula 1-2-2. Pleura glabrous. Male hypopyg- 

 ium with the ])osterior half of tergite forming a shallow saucer (Fig. 

 27, A-D), in several species heavily sclerotized and blackened and 

 with the lateral angles produced caudad into acute spines. In the 



