10 .MISC. PUBLICATION 42 1, U. S. DEPT. OF AGRICULTURE 



placed ventrally on apex of abdomen. Larva having first antenna! segment 

 with 2 setae, fourth with 1. fifth with 1. sixth with 2 long, 2 stont, •". fairly 

 stout, and 2 slender setae; coxa with 4, femur with 3, tarsus with 3 setae: !> 

 pairs of submarginal 8-shaped pores. 



Group VI (agavis, crl^totum. grCDndicttZii/irb) puteamtm. sanhcrnar- 

 dense, townsendi, viridulum). — Species of this group are found in the 

 Nearctic and Neotropical Regions. Although they appear indigenous 

 to both regions, they may be native only to the Neotropical, because 

 certain members of the group appear only in, or appear to be spread- 

 ing from, the lower limits of the Nearctic Region, thus suggesting a 

 gradual extension of an original Neotropical distribution. 



Adult female characterized by row of marginal quinquelocular pores usually 

 being interrupted, or terminating at a considerable distance from posterior 

 marginal 8-shaped pores; by the presence usually of a marginal row of disk pores 

 dorsad of 8-shaped pores; by the occurrence of 5 pairs of setae on apex of 

 abdomen; and by the absence of a rectangular sclerotized area or 2 elongate 

 sclerotized areas from ventral surface of apex of abdomen. Larva with lirst 

 antenna] segmenl provided with 2 setae, fourth with 1. fifth with none, sixth 

 with 2 long, 2 stout, 3 fairly stout, and 2 slender setae; coxa with 4. femur 

 with 3. tarsus with •"» setae. 



Group VII (hahea-e. quadrisetosum^ subventruoswm^ ventruoswm,) . — 

 All species of this group are found in. and doubtless are indigenous to, 

 the Australian Region. 



Adult female characterized by a double row of marginal 8-shaped pores, a 

 marginal row of disk pores usually dorsad and ventrad of 8-shaped pores, a 

 complete row of marginal quinquelocular pores terminating less than 7 8-shaped 

 pores from posterior marginal 8-shap< >l po 'es, I pairs of setae on apex of abdomen, 

 absence of a rectangular or 2 elongate sclerotized areas from ventral surface 

 of apex of abdomen. Larva characterized by coxa with ."» setae, femur with 2. 

 and tarsus with 2 setae. 



Group VIII (epaeridis, inconspicuvm, lacrinvula, multivorum* 



stypheliae. transversum) . — All species of this group are found in, and 

 appear native to, the Australian Region. 



Adult female usually characterized by a single row of marginal 8-shaped pores, a 

 complete row of marginal quinquelocular pores terminating at or near posterior 

 marginal 8-shaped pores, absence of a well defined marginal or ventral sul>- 

 marginal row of disk pores; ;i rectangular or 2 elongate sclerotized areas, or 

 gradations between the two. placed ventrally on apex of abdomen; an anal ring 

 with 6 setae and usually with pores. Larva usually characterized by first antenna! 

 segment with 2 setae, fourth with 1. fifth with 1, sixth witli 2 long, 2 stout. 

 3 fairly stout, and 2 slender setae: coxa with t setae, femur with 2, tarsus with 

 2 setae. 



Group IX (victorias, uitreum). — Both these species are found in. 

 and appear indigenous to. the Australian Region. 



Adult female characterized by a single row of marginal 8-shaped pores, a 

 complete row of marginal quinqueloeular pores terminating near posterior 

 marginal 8-shaped pores, a cylindrical anal tube, a circular anal ring without 

 pores but with 2 or 4 setae about 2u long. Larva having first antennal seg- 

 ment with 1 seta, fourth with 1, fifth with 1, sixth with 2 long, 2 stout, 3 

 fairly stout, and 2 slender setae; coxa with 4 setae, femur with 2. and tarsus 

 with 2 setae. 



Group X (corallinum, javae, litseae, maeMli, psychotriae, stria- 



turn). — These^ species occur within, and appear indigenous to, the 

 Oriental Region, though litzcac has also heen reported from the 

 lower part of the Manchurian Suhregion of the Palearctic Region. 



Adult female characterized by a single row of marginal 8-shaped pores, a 

 complete row of quinqueloeular pores terminating at or posterior to posterior 



