478 CONNECTICUT GEOL. AND NAT. HIST. SURVEY ( Bllll. 



encd, broadest on fore legs ; wings narrow, with vein 2nd A short, extend- 

 ing to opposite iii-cu or just beyond: male hypopygium (Fig. 55, J) 



paludicola 



The following doubtful forms, both members of the gracilis group, are not in- 

 cluded in the above key because of insut^cient data. 



Molophilus costopunctatiis Dietz (Trans. Amer. Ent. Soc, 47:248; 1921). 

 Mesonotum light brown, the pronotum and lateral pretergites light yellow. Head 

 reddish brown : antennae relatively short ; basal segments pale yellow, the outer 

 segments light brown. Knobs of halteres fuscous. Wings tinged with yellow; a 

 small but conspicuous costal spot between R2 and tip of i?i+2. $ . L. 2.?> mm. ; w. 4 

 mm. Hazleton, Pa. (Sept.). 



Molophilus forcipulus hctcroccrus Dietz. (Ibid., 47:247-248; 1921). Differs 

 from the typical form in the pale yellow antennal flagellum ; scape brown; pedicel 

 yellowish brown. The sulphur-yellow area on humeri scarcely evident. Hazleton, 

 Pa. (Sept.). 



Molophilus auricomus Alex. (Fi^^ 55, B). 



192G. Molophilus auricoinus Alexaiuler; Insec. Inscit, Menst., 14: 115- 

 117. 



Ik'lon^.s to the gr-acilis <!,roiip. (jreneral coloration reddish yellow. 

 Antennae short in both sexes, the l)asal se«;ments pale. Head yellow. 

 \Vin<:s yellow, the costal region bri<^hter, covered with yellow trichia. 

 INfale hypopygium (Fig. 55, B). $. L. about 3 mm.; w. 4 mm. ?. 

 L. about 3.5 mm.: w. 4.3 mm. 



(June. July) X. C, S. C, Tenn. 



M. cramptoni Alex. (Figs. 50, L; 55, C). 



V^-l\. Molophilus cramptoni Alexander: liull. I>rooklyn Ent. Soc, 

 1!): 01-62. 



Belongs to the plagkitus grouj). (leneral coloration (hirk brown; 

 lateral pretergites restrictedly whitish. Antennae ( $) relatively long, 

 if bent backward extending about to root of haltieres; flagellar seg- 

 ments elongate-oval, clothed with long white setae. Halteres yellow. 

 Wings (Fig. 50, L) strongly tinged with brown. Male hypopygium 

 (Fig. 55, C). i. L. 4-4.2 mm.: w. 4.S nun. 9. L. 4.5-5 mm.; w. 

 4.8-5.4 mm. 



(June) Me., N. H., \'t., Mass., N. Y., westw. to Ind. and Mich., southw. to S. C. 

 and Tenn. 



Connecticut.— Hartland. June 9, 1929 (C. P. A.). 



M. forcipulus (O. 8.) (Fig. 55, D). 



1869. Erioptera forcipula Osten Sacken : Mon. Dipt. X. Amer., 4: 

 163-1G4. 



Fig— Dickinson, Cfls. Wise, p. 196, fig. 80 (wing) ; 1932. 



Belongs to the gracilis group. Me.sonotum reddish brown, with a 

 line of darker setae on praescutal interspaces: humeri and lateral pre- 

 tergites pale yellow. Antennae Avith basal segments pale, the outer 

 segments dai-k brown. Halteres infuscated, the apices of knobs a 

 trifle l)rigiitened. Male hypopygium (Fig. 55, D). $. L. about 3-4 

 nun.: w. 3.5-5 mm. 



