60 
BULLETIN 918, U. S. DEPARTMENT OF AGRICULTURE. 
stalked to costa, rest separate, lb furcate at base. 6 Hindwings (fig. 7, B) somewhat 
broader than forewings, trapezoidal; costa deflected from the middle; apex pointed; 
termen sinuate; 8 veins; 8 connected with cell by an oblique bar; 6 and 7 closely 
approximate at base; 3 and 4 connate; 5 parallel with 4; frenulum simple in the 
males, triple in the females. Male genitalia (fig. 9, B), with harpes and uncus well 
developed; tegumen evenly chitinized. Posterior tibiae (fig. 9, A) hairy above. 
Larva.— Head (PL V and fig. 8) spherical, nearly circular in outline viewed from 
above, a little wider than long; greatest width a little behind the middle; incision 
of dorsal hind margin about one-fourth of the diameter of the head ; distance between 
Fig. 6.— Pink bollworm. A, Pupa from front: lb, Labrum; /, front; c.clypeus; g, gena; md, mandibles; 
ge, glaced eye; e, eye; mp, maxillary palpus; mx, maxilla; h, first thoracic leg; h, second thoracic leg; 
h, third thoracic leg; a, antenna; w, fore wing; go, genital opening; ao, anal opening. B, Tip of pupa 
from left side: c,Cremaster. C, Mature pupa, with eyes of the imago visible through pupal skin. D, Pupa 
from back: /, Front; v, vertex; U, first thoracic segment; h, second thoracic segment; t 3 , third thoracic 
segment: a h first abdominal segment; a 2 , second abdominal segment; a 3 , third abdominal segment; a±, 
fourth abdominal segment; a 5 , fifth abdominal segment; a 6 , sixth abdominal segment; a 7 , seventh 
abdominal segment; a 8 , eighth abdominal segment; a 9 , ninth abdominal segment; a l0 , tenth abdominal 
segment. (Busck.) 
dorsal extremities of hind margin about one-half of the width of the head. Front 
triangular, reaching beyond the middle; adfrontal sutures somewhat undulating, 
reaching to the incision of hind margin; adfrontal ridges converging from near the 
middle, at the point of attachment of tentorial arms, to the longitudinal ridge, which is 
one-half as long as front. Projection of the dorsal margin over the ventral is one-half 
of the diameter of the head. Triangular plates of hypostoma distinctly separated by a 
slightly pigmented gula, nearly equilateral, but somewhat elongated and projecting 
slightly beyond the ventral margin of epicranium. 
Ocelli six; i, ii, v, and vi forming a parallelogram; iii and iv on a line between ii 
and v; v smaller than the rest. 7 Epistoma with the usual two pairs of setae (E„ E 2 ) 
well developed. 
6 The European (Gelechia) Pectinovhora malvella Zeller exhibits an amount of variation of the venation 
in the forewing which is very unusual in this group of insects. Veins 2 and 3 in this species are sometimes 
coincident or partly coincident at base or at tip; the variations sometimes differing in the two wings of the 
same insect. No such variation has been ascertained in P. gossijpiella, where the venation seems constant, 
as given above. 
i This numbering of the eyes differs from that of Fracker in that his numbers 5 and 6 are reversed, so as 
to make them continuous with the rest. (Fracker, S. B. The Classification of Lepidopterous Larvae . . . 
169 p., 10 pi. Urbana, 111., 1915. Bibliography, p. 145-146. Illinois Biological Monographs, v. 2, no. 1.) 
