68 Journal of Agricultural Research voi. xiii, no. i 



exterior mixed with fragments of frass or of bark, or if it is on the sur- 

 face of the peach the fuzz or pubescence from the skin of the peach will 

 be incorporated in the cocoon. Occasionally in a dry fruit, such as 

 quince, the insect will spin its cocoon inside of the fruit. The time from 

 the spinning "of the cocoon to pupation is from 2 to 9 days and the 

 average 3 days. 



THE PUPA 



The pupa (PI. 9, C, D, E) is yellow-brown in color; without pubescence ; average meas- 

 urements (3 specimens) 6.26 mm. long by 1.8 mm. wide. Frontoclypeal suture indis- 

 tinct; eyes and glazed eyes discernible; mandibles and clypeus distinctly indicated; 

 2 pairs of clypeal setae, inner pair slightly longer than outer; clypeo-labral suture not 

 visible; labial palpi slightly more than half the length of the maxillae; maxillary palpi 

 extending to the proximo-lateral angles of the maxillae; maxillae reaching one-third 

 of the way to the tips of the wings. Metathoracic legs and tips of hind wings reaching 

 just beyond the cephalic edge of the fourth abdominal segment; antennae extending 

 about two-thirds of the wing length, reaching beyond second.coxae. A double row 

 of dorsal spines on abdominal segments 2 to 7 ; abdominal segment 2 with spines of 

 cephalic row uneven in size and arrangement, the row extending usually less than 

 half-way across the segment, the caudal row well developed and extending almost 

 across; segments 3 to 7 with spines of cephalic row about twice as large and half as 

 numerous as those of the caudal row; segments 8 to 10 with one row of spines, the 

 spines gradually increasing in size from segment 8 to segment 10. 



No cremaster. Two hooked setae on either side of the anal rise, with a third hooked 

 seta latero-caudad ; a fourth pair of hooked setae, dorso-caudad of the third pair, is on 

 the caudal margin of the abdomen. Spiracles circular and produced. Anal and 

 genital openings slitlike, the latter single in both sexes. 



The pupa period covers from 5 to 12 days, averaging 7.8 days. When 

 the moth is ready to emerge the pupa pushes itself from its cocoon by 

 means of rows of dorsal spines on the abdomen. When it protrudes 

 froni the cocoon far enough to permit emergence of the moth the pupa 

 fastens itself to the inside of the cocoon by means of hooked spines 

 arranged upon the caudal margin. The pupal case then splits in the 

 cephalic and thoracic regions, permitting the moth to emerge, 



THE ADULT 



The head of the adult'(Pl. io,A,B,C)isa dark , smoky fuscous ; face a shade darker, 

 nearly black; labial palpi a shade lighter fuscous; antennae simple, rather stout, half as 

 long as the fore wings, dark fuscous with thin, indistinct, whitish annulations. Thorax 

 blackish fuscous; patagia fainly irrorated with white, each scale being slightly white- 

 tipped. Fore wings normal in form; termen with slight sinuation below apex; dark 

 fuscous, obscurely irrorated by white-tipped scales; costal edge blackish, strigulated 

 with obscure, geminate, white dashes, four very faint pairs on basal half and three 

 more distinct on outer half besides two single white dashes before apex; from the 

 black costal intervals run very obsciu-e, wavy, dark lines across the wing, all with a 

 strong outwardly directed wave on the middle of the wing; on the middle of the 

 dorsal edge the spaces between three of these lines are more strongly irrorated with 

 white than is the rest of the wing, so as to constitute two faint and poorly defined, 



' Description by Mr. August Busck. (Quaintance, A. L., and Wood, W. B. iaspeyresia molEsta, 

 AN IMPORTANT NEW INSECT ENEMY OP THE PEACH. In Jour. AgT. Research, v. 7, no. 8, p. 373-374. 1916.) 



