l26 NEW YORK STATE MUSEUM 



(pl.37, fig.l2) . In some species petiole of the cubitus is very short 

 (pl.27,fig.4). 



The only larva which I have found belonging to this genus is 

 that of a d u ni b r a t u s n. sp. (pi. 20^ figs.1-5) . Pupae of the 

 a.bove species and of P. pinguis Lw. will be found described 

 upon a subsequent page (pl-19, figs.3-4, and i>1.20, figs. 4 and 5). 



KEY TO SPECIES OF PROCLADIXJS 



Imagines 

 a Legs uniform in coloi', pale or dark 



b Legs piceous or brownish; fore metatarsus about one sixtli sliorter 

 than the tibia ; opaque blaclv species, thorax cinereous, black striped; 

 crossveiu lightly cinereous ; wings white ; halteres white ; length 



4.5 mm .' 1. t u r p i s Zett 



ib Legs yellow ; brown species, prothorax, a spot near its hmuerus and 

 scutellum dark yellow ; length 4.5 mm. (Colorado) 



2. occidentalis 

 aa Legs bicolored 



b Yellow or red dorsum of thorax (usually pale species) 

 c Scutellum and metanotum yellow, the latter sometimes with a line 

 of black 

 (I Small yellowish species; thorax whitish \^dth three shining red- 

 dish stripes ; length 1.5 to 2.25 mm 3. p u s i 1 1 u s 



(Id Larger yellow species, 3 mm 4. b e 1 1 u s 



cc Scutellum and metanotum, either one or both, with considerable 

 black uix)n them 

 (I Tips of fore femora black ; abdomen black and fusous ; male, 



lengtli 4..5 mm 5. thoracicus 



(Id Fore femora not as above 



e Fore femora wholly yellow ; abdomen yellow ; segments with 



black bases ; female, length 3 mm 6. c o n c i n n u s 



ee Fore femora black and yellow 



/ Femora black, bases yellow ; male abdomen black and white ; 

 female abdomen black ; male fore tibia white with black 

 tip ; female fore tibia black ; length 3 mm. (Cuba) 



7. h u m e r a 1 i s 

 ff Femora and tibiae yellow, each with two black rings; abdo- 

 men black and yellow ; female, length 3.5 mm. 



8. tricolor 

 66 Black or fuscous dorsum of thorax (dark species) 

 c Femora more than half yellow 



d Abdomen wholly dark brown subshiuing ; thorax shining brown, 

 with three shining dark brown stripes ; tibiae nearly wholly 

 brown ; halteres sordidly yellow ; female, length 3.5 to 4 mm. 



9. c a 1 i g i n o s u s n. sp. 

 dd Each abdominal segment basally or apically yellow 



e Thorax pitchy black ; pleura ferruginous ; abdomen black ; bases 

 of segments yellow ; male, 3 mm 10. flavicinctus 



