lob NEW YORK STATE MUSEUM 



Miss Cora H. Clarke at Magnolia, Mass. Galls from which midges 

 had issued were also observed by her July 13, 1909. 



Gall. The axillary flower buds of Hypericum m u t i 1 u m 

 are swollen, ovate, 5 mm long, 3 mm in diameter and greenish or 

 reddish. 



Egg. ^ Length .15 mm, narrowly elliptical, probably reddish 

 orange in color. 



Larva. Length 2 mm, yellowish, moderately stout, the head 

 broadly triangular. Antennae short, stout, acute. Breastbone 

 wanting, segmentation distinct. Skin smooth, posterior extremity 

 roundly truncate, the lateral angles with irregular groups of three 

 or more rather stout, semitransparent processes ; anus ovate. 



Pupa. Length 2 mm. Alesonotum reddish brown. Scutellum 

 and postscutellum fuscous yellowish. Abdomen mostly dull gray, 

 the dorsal sclerites a variable fuscous anteriorly, with stout, closely 

 set spines. Thoracic horns long, slender, acute. Antennal and leg 

 cases yellowish gray, the latter extending to the acute tip of the 

 abdomen. Wing cases dark gray. 



Male. Length 2.5 mm. Antennae nearly as long as the body, 

 sparsely haired, dark brown; 19 segments, the fifth with a stem 

 one-quarter longer than the cylindric basal enlargement, which lat- 

 ter has a length twice its diameter ; terminal segment reduced, nar- 

 rowly oval. Palpi ; first segment obconic, the second stout, sub- 

 oval, the third a little longer, slender, the fourth one-half longer 

 than the third, more slender. Genitalia ; basal clasp seg^ment long, 

 slender ; terminal clasp segment long, swollen near the middle ; 

 dorsal plate broad, deeply and triangularly emarginate, ventral plate 

 broad, deeply and roundly emarginate. Harpes stout, truncate anc 

 irregularly tuberculate, broadly rounded. Other characters pre- 

 sumably as in the female. 



Female. Length 2 mm. Antennae extending to the third ab- 

 dominal segment, sparsely haired, dark brown ; 19 cylindric sessile 

 segments, the fifth with a length three times its diameter ; terminal 

 segment reduced, narrowly oval. Palpi ; first segment short, stout, 

 the second broadly oval, the third longer, more slender, the fourth 

 twice the length of the third. Mesonotum shining dark brown. 

 Scutellum dark reddish brown, postscutellum fuscous yellowish. 

 Abdomen a variable reddish, the dorsal sclerites, especially basally, 

 fuscous; terminal segment and ovipositor fuscous. Wings hyaline, 

 costa dark brown. Halteres yellowish basally, fuscous apically. 

 Legs a variable fuscous yellowish, the distal third of femora and the 

 basal half of tibiae mostly fuscous ; claws slender, strongly curved, 

 the pulvilli as long as the claws. Ovipositor about one-third the 

 length of the abdomen, the terminal lobe stout, with a length about 

 four times its diameter, narrowly rounded. Type Cecid. a 1883. 



