REPORT OF THE STATE ENTOMOLOGIST I917 ']'/ 



bb Palpi triarticulate 



c Basal clasp segment lobed apically 



d The lobe long, greatly produced, narrowly triangular, terminal 



clasp segment normal Dentifibula Felt 



dd The lobe broadly rounded, not greatly produced, terminal clasp 



segment irregular and pectinate apically 



P c c t i n o d i p 1 o s i s n. g. 



Croup 2, Trifili 

 This group is easily recognized by the presence of 3 more or less 

 developed circtimfili on the flagellate antennal segments of the male, 

 the nodes usually being unequal and sometimes very unequal. 



a Claws toothed on all the legs 

 b Palpi quadriarticulate 



c Basal clasp segment with a basal lobe 



d Flagellate antennal segments of the male trinodose, the termuial 

 clasp segment much produced, plainly longer than the basal 



clasp segment, ovipositor short, the lolses orbicular 



Youngomyia F(.;lt 

 cc Basal clasp segment without a distinct basal lobe (presumably) 



d Claws curved nearly at right angles, the palpi long or moderately 

 long, dorsal and ventral plates short, broadly and deeply 



emarginate T h o m a s i a Rubs. 



dd Claws not strongly curved basally and therefore not forming 



almost a right angle, genus known only in the female and 



presumably belonging here 



e Ovipo.sitor slightly protractile, the lobes long, curved and 



with 2 or 3 longitudinal, subventral rows of obtuse 



spines Dicrodiplosis Kieff . 



bb Palpi triarticulate 



c Basal clasp segment not lobed, the flagellate antennal segments 

 sharply constricted and with distinct stems. Circumfili moder- 

 ately short and rather thick Kalodiplosis Felt 



cc Basal clasp segment distinctly lobed, the flagellate antennal segments 

 without sharply defined constrictions, the basal portion of the 

 stem almost wanting, the circumfili moderately short and some- 

 what slender Peridiplosisn. g. 



aa Claws on the anterior legs and sometimes those of the middle legs toothed, 

 those of the posterior legs simple 

 b Palpi quadriarticulate 



c Circumfili with one or more greatly produced bows or loops having 

 a length five to ten times that of the enlargement and extending 

 at approximately right angles to it 

 d Three well-developed circumfili, the ventral plate large, oval, as 



long or a little longer than the dorsal plate 



Aphidoletes Kieff. 

 dd Two well-developed, irregular circumfili, the basal circumfilum 



on the distal enlargement low, not greatly produced 



B r e m i a Rond. 



