124 



NEW YORK STATE MUSEUM 



Fig. 



32 Rhabdophaga 



ri>;idae. m^le \vin° 

 (Orife'inal) 



much enlarged 



Male. Antennae brown, extending to the base of the abdomen 

 and composed of 24 pedicellate segments, the first subglobular, 

 much enlarged, the second stout, the others with the exception of 

 the last, each with a smooth pedicel about one third the length of 

 the segment. The enlarged portion is ornamented basally with 



a regular row 

 ^^ : ^^^ ; ^ ^::: f ^ r '''''^. of short, straight 



setae, the re- 

 mainder being 

 thickly clothed 

 with long, 



slender, curved 

 setae arising 

 from prominent 

 setigerous tuber- 

 cles. There is a 

 distinct though 



not conspicuous transverse band with a line of white spots along its 

 length near the basal fourth, much as in the female. There appears 

 to be another similar structure at the apical portion of the enlarge- 

 ment as in the opposite sex. Male genitalia with the basal clasp seg- 

 ment broadly dilated at the base, slightly rounded exteriorly, strongly 

 so interiorly and obliquely truncate apically ; terminal clasp seginent 

 broadly expanded at the base, curved and tapering to a strong, 

 dark, chitinous point. Dorsal lamella deeply incised mesially, each 

 lobe sitout and broadly rounded at the apex ; ventral lamella broad, 

 truncate apically, gently rounded and 

 produced laterally ; stylet stout, short, 

 broadly rounded apically. 



The above are described from alco- 

 holic specimens bred from twigs taken 

 at Karner April 13, 1903, adults ap- 

 pearing the 27th, 



Pupa. Stout, brown, curved, J4 

 inch long, wing cases reaching to base 

 of the third abdominal segment, leg 

 sheaths extending to the sixth abdo- 

 minal segment. Antennae with a 

 small, basal, tubercular process and 

 extending to the base of the abdomen. 

 Larva. Yellowish, stout, j\ inch 

 long and with the segments well 

 marked. Head small, retracted ; an- 

 tennae with a large basal and a smaller 

 terminal conical segment, 

 fork or " breastbone " short, stout, 

 with the arms well separated and bearing conical, polished, acute 

 teeth, basal parts dark though not sharply defined. Spiracles occur 

 on the 2d and 5th to 12th segments inclusive, those on the latter 





m 



r'liifJnrMic ^^S. 33 Rhabdophaga ri^idae, 

 v_^uiLiiiuui> larval breastbone, enlarged (Original) 



