PINK BOLLWORM OF COTTON IN MEXICO. 



59 



seen to have four teeth (fig. 5, A-D) and the crotches on the abdominal prolegs form a 

 partial circle or horsehoe, opening outwards (fig. 5, S), the caterpillar will most 

 probably prove to be the pink bollworm. 



Again, if, within a cotton boll or otherwise associated with cotton in the field or in 

 the mill, a small lepidopterous pupa is found, which under the lens is found to be 

 entirely covered with a short velvety pubescence and to possess a short, curved, up- 

 turned hook at the posterior end (fig. 6. A-D), it may with considerable certainty be 

 determined as a pupa of the pink bollworm. 



Fig. 5.— Pink bollworm: A, Right mandible of larva from underside. B, Left mandible from underside. 

 C, Right mandible from upper side. D, Left mandible from upper side. E, Left antenna of larva from 

 underside: /, First joint; 2, second joint; .>' third joint; 4, fourth joint. F, Epipharynx of larva: ES, 

 Epipharyngeal shield; E T, epipharyngeal seta; r, epipharyngeal rod. O, Labrum of larva: La\, 

 Lateral labral seta 1 ; Lai, lateral labral seta 2; La 3 , lateral labral seta 3; Mi, median labral seta 1; Mi, 

 median labral seta 2; M s , median labral seta 3; p, labral punctures; r, epipharyngeal rod. H, Underside 

 of third abdominal segment of larva. (Busck.) 



GENERIC DESCRIPTION. 



Pectinophora, new genus (Gelechiidae). 

 Type: Gelechia gossypiella Saunders. 

 Moth. — Face and head smooth. Labial palpi long, recurved . reaching above vertex ; 

 second joint thickened on the underside with slight 1 ;/ furrowed brush, which is evenly 

 attenuated toward apex; terminal joint shorter than second, somewhat thickened 

 with scales in front, compressed, pointed. Maxillary palpi minute, deflected. 

 Tongue long, spiral ed, scaled in its entire length. Antennae serrated and finely cili- 

 ated on the underside; basal joint with heavy but sparse (5-6) pecten. Thorax 

 smooth. Forewings (fig. 7, A) elongate ovate, pointed, smooth; 12 veins, 7 and 8 



