48 INSECUTOR INSCITI^ MENSTRUUS 



GENERIC DESCRIPTION OF LARVA OF ANEG- 

 CEPHALESIS DYAR 



(Type A. catharetes Dyar) 



(Lepidoptera, Pyralidce) 



By carl HEINRICH 



Head capsule spherical, nearly square in outline viewed from 

 above, slightly wider than long; greatest width back of mid- 

 dle of head ; incision of dorsal hind margin about one-sixth the 

 width of head ; distance between dorsal extremities of hind 

 margin a Httle more than one-third the width of head. Frons 

 (FR) pentagonal, nearly as wide as long, not reaching to mid- 

 dle of head; adfrontal ridges (ADFR) parallel from lower 

 limit of epistomal area to point of juncture of tentorial arms, 

 thence converging in straight lines to the longitudinal ridge 

 (IvR) which is slightly longer than frons; adfrontal suture^; 

 (ADFS) meeting longitudinal ridges well before incision of 

 dorsal hind margin. Projection of the dorsal margin over ven- 

 tral a little more than half the diameter of the head. Triangu- 

 lar plates of hypostoma nearly equilateral, well separated by 

 transparent gula, opposing extremities rounded. 



Ocelli six, with III, IV, V in a straight line ; I larger than 

 the others ; III and IV closer together than any of the others. 



Epistoma with the usual two pair of setse (El, E2) well de- 

 veloped. 



Frontal punctures (Fa) close together, anterior to frontal 

 setae (Fl) ; distance between punctures less than distance from 

 puncture (Fa) to seta (Fl) ; distance from frontal seta (Fl) 

 to seta Adfl less than from Adfl to Adf2 ; second adfrontal 

 seta (Adf3) on a level with beginning of longitudinal ridge 

 (LR) ; adfrontal puncture (Adfa) approximate to seta Adf2. 



Epicranium with the normal number of primary setse (13) 

 and punctures (7) and with four minute ultra posterior punc- 

 tures. Anterior set^ i (Al, A2, A3) in an obtuse angle; Al 

 and A2 closer together than A2 and A3; anterior puncture 

 (Aa) posterior of A2. Setae (Pi, P2) and puncture (Pb) of 



•The nomenclature for head setae is, with some improvements suggested by 

 Mr. Augusst Busck, that proposed in Proc. Ent. Soc, VIII, 8, 1910, pp. 154-164. 



