216 Phoridae. 



— Abdomen more greyish to rather strongly or 

 whitish grey; scutellar bristles unequal the 



anterior in male often only small hairs 40. 



38. Frons considerably broader than high 39. 



— Frons scareely broader than high (only male 



known) correlata Schmitz. 



39. Supraantennal bristles of normal size; arista 



of usual length (only female known) septentrionalis Schmitz. 



— Supraantennal bristles small, the lower weak; 



arista short 21. hreviseta Wood. 



40. Antennæ somewhat large; frons broad; costa 

 reaching to the middle or beyond; abdomen 



strongly whitish grey alhicans Wood. 



— Antennæ of ordinary size; frons more narrow; 

 costa generally not reaching the middle; ab- 

 domen less whitish grey 22. rata Wood. 



Of the above species three, spinigera, alhicans and rata have" in 

 the male the anterior scutellar bristles much smaller than the post- 

 erior and often quite small, only in the shape of a small hair; spini- 

 gera will be recognized by the two or three long bristles on meso- 

 pleiira; alhicans and rata will be known by the short bristles on the 

 palpi and the small supraantennals; four other species, cuspidata, 

 rufa, luteipes and errata show in the male only two scutellar bristles; 

 of these species cuspidata and ruja have a short costa, the former 

 0,44, the latter 0,41, and short costal cilia, ruja will moreover be 

 known by the red thorax, the arrangement of the frontal bristles and 

 the minute or almost wanting lower supraantennals; errata at once 

 will be recognized on the intraalar bristle, and fmally luteipes may be 

 known by the yellow pleura and red antennæ from the species, with 

 which it would have to be arranged in the group with tw^o scutellar 

 bristles; it is for the rest not quite certain that the male and female 

 of luteipes belong together (see Schmitz, Ent. Ber, Nederl. Ent. Ver. 

 V, 1918, 61, and Jaarb. Nat. Genootsch. Limburg 1917, 137). In 

 fumata the male has the anterior bristles much smaller than the post- 

 erior, and in the female they are only hairs, but this species is easily 

 known by the thickened four last joints on front tarsi. 



Group II. 



Scutellum with two bristles. 

 Mesopleura bristly, with one or more longer besides the small bristles. 



Costa long. 

 1 . Costal cilia short 2. 



— Costal cilia long 12. 



