REPORT OF THE STATE ENTOMOLOGIST I917 85 



Key to species 



a Abdomen yellowish 



b Basal portion of the stem of the fifth antennal segment with a length 

 about one-half its diameter 

 c Mesonotum yellowish and slaty brown; the distal portion of the 

 stem of the fifth antennal segment with a length two and one- 

 half times its diameter, slightly expanded apically; the basal 



clasp segment stout, tapering slightly filicis Felt, C. 20 



cc Mesonotum sooty yellow; the distal portion of the stem of the 

 fifth antennal segment with a length one-half greater than its 

 diameter, shghtly expanded apically; basal clasp segment stout, 



broadly rounded apically a p i c a 1 i s Felt, C. 52 



ccc Mesonotum dark brown; the distal portion of the stem of the 

 fifth antennal segment with a length twice its diameter, greatly 

 expanded distally; the basal clasp segment short, broad, 



tapering strongly foetedi Felt, C. 24 



hb The basal portion of the stem of the fifth antennal segment with a 

 length one-half greater than its diameter 

 c Mesonotum reddish brown; the distal portion of the stem of the 

 fifth antennal segment with a length three times its diameter; 



the basal clasp segment short, stout and tapering strongly 



symplocarpi Felt, C. 23 

 aa Abdomen yellowish red 



b Mesonotum dark brown; the basal portion of the stem of the fifth 

 antennal segment with a length only one-half its diameter; the basal 



clasp segment short, stout and roundly tapering distally 



consobrina Felt, C. 61 

 aaa Abdomen light brown; the basal portion of the stem of the fifth antennal 

 segment with a length one-half its diameter 

 b Mesonotum dark brown; basal clasp segment very short, stout and 



roundly tapering apically tiliae Felt, C. 25 



bb Mesonotum light brown; the basal clasp segment very short and stout 



c a r i c i s Felt, C. 19 

 aaaa Abdomen reddish brown 



b Mesonotum yellowish brown; the basal portion of the stem of the 

 fifth antennal segment with a length one-half its diameter; the 

 basal clasp segment short, stout and narrowly rounded apically. . . . 



a b d o m i n a 1 i s Felt, C. 16 



Lobopteromyia filicis Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 131; separate, p. 20 



(Contarinia) 



1908 N. Y. State Mus. Bui. 124, p. 390 



The yellowish midges were taken on ferns May i6, 1906 at 

 Kamer, N. Y. 



Male. Length 1.5 mm. Antennae longer than the body, thickly 

 fine haired, light brown; 14 segments, the fifth with stems one- 

 half and two and one-half times their diameters respectively ; terminal 

 segment with the basal enlargement somewhat flattened, the distal 



