178 Journal New York Entomological Society, t'^'o'- ^xiii. 



b. Stems of the fifth antennal segment plainly unequal, with a length 

 equal and twice their diameters, respectively ; circumfili with seven 

 or eight loops ; third palpal segment with a length twice the second ; 

 abdomen yellowish brown ; basal clasp segment constricted basally ; 



ventral plate lobes not plainly divergent smithi n. sp., a2495a. 



bb. Stems of the fifth antennal segment nearly equal, with a length one- 

 third and one-half their diameters, respectively ; circumfili with 

 fifteen loops; third palpal segment a little longer than tne second; 

 abdomen dark brown ; basal clasp segment uniformly stout ; ventral 

 plate lobes divergent buscki Felt, C. 15 29a. 



Diadiplosis smithi new species. 



The species described below was received through the courtesy 

 of Mr. H. S. Smith of the California State Commission of Horti- 

 culture, accompanied by the statement that the insects had been 

 reared from cocoons produced by larvae feeding upon a Piilvinaria 

 on citrus at Manila, P. I. This species is quite distinct from earlier 

 characterized forms and is therefore described as new. 



Male. — Length .8 mm. Antennae one-half longer than the body, thickly 

 haired, light straw ; fourteen segments, the fifth with stems as long and twice 

 the length of their diameters, respectively ; the circumfili moderately long and 

 stout, and with but six or eight loops to a filum. Palpi : first segment short, 

 irregular, the second subquadrate, with a length about twice its diameter, the 

 third slender and more than twice the length of the second. Mesonotum dark 

 brown, the submedian lines, the posterior median area, the scutellum and 

 postscutellum yellowish orange. Abdomen yellowish brown, yellowish basally 

 and apically, the genitalia slightly fuscous. Wings hyaline. Halteres, coxse 

 and femora basally yellowish transparent, the distal portion of femora, tibiae 

 and tarsi light straw. Claws slender, strongly curved, unidentate, the pul- 

 villi about half the length of the claws. Genitalia : basal clasp segment 

 moderately long, stout ; terminal clasp segment greatly reduced and with a 

 stout spur apically ; dorsal plate long, deeply and narrowly emarginate, the 

 lobes tapering and rather thickly setose apically ; ventral plate rather long, 

 tapering, broadly and roundly emarginate, the distal margin setose. 



Female. — Length 2 mm. Antennae nearly as long as the body, sparsely 

 haired, probably light straw ; fourteen segments, the fifth with a stem one- 

 fourth the length of the cylindric basal enlargement, which latter has a 

 length about two and one-fourth times its diameter. Palpi practically as in 

 the male, except that both the second and third segments appear to be 

 relatively somewhat longer. Ovipositor short, the terminal lobes roundly oval 

 and thickly setose. 



Type Cecid. a2495a. 



