Mar. i, 1921 Lepidoptera Likely to be Confused with Pink Bollworm 809 



On the ninth abdominal segment (Aix) the paired dorsal setae II not on a single 

 pinaculum (chitinized plate) and not appreciably closer together than the paired I 

 on the dorsum of the eighth abdominal segment; seta I no nearer to III than toll; VI 

 closely approximate to IV and V; group VII unisetose. 



Prothoracic legs appreciably separated at their base. No anal fork on tenth abdom- 

 inal segment. Crochets of abdominal prolegs uniordinal and arranged in a circle broken 

 outwardly. (PI. 106, A.) 



On each side of the thoracic shield near Seta I b a small crescent or reniform spot (PI. 

 103, A) paler than the surrounding chitinized area. 



On the epicranium the lateral seta (L 1 ) behind the level of P 1 and remote from A 3 

 (that is, farther from A 3 than A 3 is from A 2 ) and the anterior puncture (A a ) lying 

 between setae A 1 and A 2 . (PI. 101, A.) 



Each of these characters is possessed by other lepidopterous larvae, 

 but their combination is peculiar to Pectinophora gossypiella. No other 

 known larva that we have in this country possesses them all. I have not 

 seen caterpillars of (Gelechia) Pectinophora malvella Zeller, 1 the only other 

 known species of the genus Pectinophora, or oi'Platyedra vilella Zeller, 

 which Meyrick considers congeneric with Pectinophora gossypiella. 2 

 These may have most or all of the structural characters here given, but 

 as neither of them occurs outside of the Old World they do not concern 

 us at present. 



The setal characters are fully illustrated on Plates 101, 103, and 105. 

 It will be noted that two slight changes have been made from the drawings 

 published in Busck's paper. The numbering of abdominal setae IV 

 and V has been reversed to correspond with our present conception of 

 the homologies of these setae; and the lateral puncture (L a ) of the 

 epicranium is shown directly posterior to rather than postero-ventrad of 

 seta L 1 . In Busck's figures 3 the puncture is much too low. 



The pupa (PI. 107, A-D) is evenly and densely clothed with a fine 

 pubescence; moderately stout, with a short, hooked cremaster surrounded 

 by 6 to 8 stout, hooked setae but without dorsal spines or other armature ; 

 labial palpi absent; maxillary palpi long, extending four-fifths of the 

 wing length; antennae long but not quite reaching to tips of wings; 

 vertex distinct but narrower than prothorax. 



No other lepidopteron feeding on malvaceous planes in this country 

 has such a pupa. The fine pubescence and short, hooked cremaster are 

 easily discernible under a small hand lens and are enough to identify the 

 pupa which, when once seen, is not likely to be confused with that of 

 any other cotton-feeding species. 



1 After this paper had gone to the printer we received from the Abb6 J. de Joannis of Paris a larva of 

 Pectinophora malvella. The structural characters are the same as those of Pectinophora gossypiella. 



2 The Abbe Joannis also sent us a male moth of Platyedra vilella. A comparison of the genitalia of this 

 and Pectinophora gossypiella does not support Meyrick's contention. 



3 Busck, August, op. err., 1917, p. 348, fig. 2, B. 



