500 



WILLIAM T. M. FORBES 



Vertex narrower than prothorax, very narrow on mid-dorsal line; 

 front only slightly roughened, in P. rana with small eye spines ; maxil- 

 lary palpi not separate from tongue; indicated by a lobe at base of 



290 P J 



T_L 



gp 



"'"V 



FIGS. 288-290. 



288, Hysterosia termmana, venation and costal fold; 289, Phalonia dubitana, 

 venation; 290, Phalonia, posterana, (Europe), seta map of larva 



tongue; labial palpi fully exposed but shorter than the tongue; tongue 

 shorter than the fore legs. Antennas long, not quite reaching to the 

 end of the wings. Abdomen with two rows of spines on each segment 

 from the first or second to the sixth or seventh ; with single rows on the 

 eighth to the tenth or the seventh and eighth segments; the anterior 

 row on each segment heavier. Tenth segment without cremaster; 

 obliquely truncate; sometimes with a circle of setae around the edge; 

 with the addorsal, subdorsal, and lateral pairs stronger, but knobbed 

 rather than hooked; sometimes with a few weak setaa only; the edge 

 also with angulations or short spines, of which a subdorsal pair is most 

 prominent, or is alone present. Early stages studied mainly in Phalonia. 



In Hysterosia birdana the pupa is rougher, rugose, and with the 

 posterior portions of the movable segments shagreened with rough knobs. 

 There are two rows of spines on the second to sixth segments of the 

 abdomen inclusive, and one only on the seventh and eighth segments. 

 The circle of spines at the end of the bo.dy is composed of three pairs 

 on the supra-anal plate, and four ventral pairs. The setiferous tubercles 

 are somewhat elevated. The front has an even-edged ventro-apical plate 

 curving up at the ends and down at the base of the antennas, and no 

 eye spines. The maxillary palpi are more definitely indicated than in 

 Phalonia. 



This family is closely related to the Tortricidae, but with definite 

 points of distinction in both larva and imago. 



