REPORT OF THE STATE ENTOMOLOGIST I9I4 



271 



about twice its diameter, tapers slightly basally; terminal segment 

 produced, narrowly oval. Palpi; the first segment short, stout, 

 irregularly oval, the second long, slender, tapering; face fuscous 

 yellowish. Mesonotum dark brown. Scutellum and postscutellum 

 reddish brown. Abdomen dark reddish brown. Wings hyaline, 

 costa light brown. Halteres pale yellowish. Legs a variable fuscous 

 yellowish; claws long, slender, evenly curved, the pulvilli longer than 

 the claws. Genitalia; basal and terminal clasp segments long, stout; 

 the latter swollen nea,r the basal third; dorsal plate short, broad, 

 broadly and triangularly incised; ventral plate short, broad, broadly 

 and roundly emarginate. 



Female. Length 2.5 mm. Antennae extending to the fourth 

 abdominal segment, sparsely haired, pale yellowish; 16 segments, 

 the fifth subsessile, with a length about twice its diameter; terminal 



Fig. 84 Rhopal.omyia antennariae; fifth antennal segment and 

 palpus of female, enlarged (original) 



segment produced, narrowly rounded apically. Mesonotum dark 

 brown, the sublateral and posterior median areas reddish brown. 

 Scutellum and postscutellum dark brown. Abdomen light brown 

 (in life bright orange red) , the basal segment of the ovipositor dark 

 brown, the apical one pale salmon. Ovipositor about as long as the 

 abdomen, the terminal lobes stout, somewhat contracted basally, 

 narrowly rounded, otherwise practically as in the opposite sex. 

 Type Cecid. 960. 



Rhopalomyia tridentatae Rubs. 



1893 Rubsaamen, E. H. Ent. Nachrichten, 19: 163 



This species, according to Rubsaamen, produces a gall on Arte- 

 misia tridentata, much resembling that m.ade by the 



