313 



'o. 



6. 



8. 



10. 



11. 



12. 



Mosonotum shiniiif?, with only slight pruineseencc ; mid and hind 



tibia^ with lanceolate scales 1. cilipes. 



IMesonotnni opaque, densely pruinescent ; all tibite with lanceolate 



scales 2. squnmipes. 



Mesonotum glossy black, without distinct pruinescence ; the discal 



hairs black 3. specularis. 



Mesonotum brown or black, shining, and with distinct pruinescence ; 



the discal hairs in large i)art brassy yellow 5 



"Wings with a distinct i)atch of pale hairs at apex of third vein .... 



4. pilosa. 



Wings without a patch of pale hairs at apex of third vein 6 



Almost entirely yellow species, only the dorsal surface of abdomen 



with distinctly black markings 5, aurea. 



Black species, pleurae, abdomen, and legs with yellow markings. . .7 

 Large species, 2.5 mm. ; abdomen with distinct yellow postmarginal 



band to segments 6. pergandei. 



Smaller species, 1.75 mm. ; abdomen with but slight indications of 



yellow postmarginal band to segments. ./^er^yrnicZfi, var. concolor. 

 Glossy black species ; mesonotum without pruinescence and with 



black hairs 3. specularis. 



Opaque or shining species ; mesonotum with distinct pruinescence 



and a large portion of the discal hairs brassy or golden .9 



Abdomen with the apex of the segments yellow 10 



Abdomen without yellow apex to segments; basal joint of hind 



tarsus longer than second (40 : 30) ; antepenultimate segment of 



antennae very slightly more than half as long as preceding segment 



(16 : 31) 2. squamipes. 



Basal joint of hind tarsus not shorter than second 1. cilipes. 



Basal joint of hind tarsus appreciably shorter than second 11 



Apical segment of antennae much longer than preapical (20 : 13) . . 



6. pergandei. 



Apical segment of antennae slightly longer than preapical 12 



Dorsum of abdomen with narrow yellow hind marginal bands to 



segments 4. pilosa. 



Dorsum of abdomen with broad yellow hind marginal bands to seg- 

 ments 5. aurea. 



CoMPARATnT: Lengths of Apical four Antexnal Joints and two 

 Basal Joints of Hind Tarsi of Males.* 



Species 



P. cilipes .... 

 F. squamipes 

 F. specularis. 

 F. pilosa .... 



F. aurea 



F. pergandei. 



^See foot-note to table on p. 305. 



