404 COXXECTICUT GEOL. AND NAT. HIST. SURVEY [BlllL 



narrow seams along the cord and vein Cui. Abdomen dark reddish 

 brown, without a blackened snbterminal ring. Male hypopygium 

 (Fig. 46. 1) with the aedeagiis small and weak, not heavily sclerotized, 

 about as long as its subtending apophyses: basal gonapophyses with 

 the lateral arms slender. $. L. 7.5 nun.; w. 9 mm. 5. L. S-9 mm.; 

 w. 10-10.5 mm. 



(June. July) Out.. Que., Mass., N. Y. 



L. {Phylidorea) siouana Alex. (Fig. 46, J). 



1929. Limnophila {Phylidorea) siouana Alexander; Bull. Brooklyn 

 Ent. Soc, 24 : 188-189. 



Belongs to the pJaty phallus grou]); closely allied to novae-angliae^ 

 dirt'ering especially in the structure of the male hypopygium (Fig. 

 46, J). Gonapophyses elongated, strongly bent beyond midlength into 

 a long curved spine, with a small spur at bend. $ . L. 6-6.5 mm. ; w. 

 5.8-6.5 mm. 9. L. about 6.5 mm.; w. about 6.7 mm. 



(Late May) la. 



L. {P hi/lido7-e a) suhcosi2iia. (Alex.) (Fig. 46, K). 



1911. Phylodorea subcostata Alexander; Can. Ent., 43 : 288-289. 



Fig.— Alexander. Cfls. N. Y., 1, pi. 40, fig. 149 (wing) ; 1919. 



General coloration black, heavily dusted with gray, thinner and 

 sometimes leaving blackish stripes visible on praescutum. Antennae 

 black throughout; head heavily gray-dusted. Halteres yellow. Legs 

 black, the femoral bases conspicuously yellow, more narrowly so on the 

 fore legs. AVings subhyaline, the stigma darker; wing base and vein 

 So brighter yellow. Abdomen brownish black. ]\Iale hypopygium 

 (Fig. 46, K) with the tergal region slightly produced medially; basi- 

 styles stout; outer dististyle slender, unequally bifid at tip; aedeagus 

 elongate; gonapophyses terminating in many small spinous points. 

 $. L. 6-6.5 nun.; w, 5.5-7 mm. 9. L. 6-7.5 mm.; w. 5-6.5 nun. 



(May-early July) Ont., Que., N. B., Me., N. H., Vt., Mass., N. Y., Pa., westw. to 

 Mich. 



Connecticut.— Hartland, June 8, 9, 1929 (C. P. A.); Kent Falls, May 31, 1931 (C. P. 

 A.) ; Norfolk, June 9, 1929 (C. P.A.). 



L. {Phylidorea) terrae-novae Alex. 



1916. Limnoph'la terrae-novae Alexander: Journ. X. Y. Ent. Soc, 



24:123. 

 1920. Limnophila ad'junefa Dietz; Can. Ent.. 52:6-7. 



Figs. — Alexander, Ih'id., pi. 8, fig. 7 (wing) ; 1916. Alexander, Cfis. N. Y., 1, pi. 

 39, fig. 130 (wing); 1919. 



Belongs to the plat y phallus group. Body even darker colored 

 than plat y phallus. Legs dark brown. Wings more heavily patterned, 

 including a dark seam in cell M adjoining vein Cux. The male sex is 

 unknown, but presmnably has a hvpopygium not unlike that of pla- 

 typhaUus. 5. L. 9.5-11.3 mm.; w.' 9.2-il.4 mm. 



(July) (Xfd.) 



