Mar. 1. 1921 Lepidoptera Likely to Be Confused with Pink Bollworm 831 



prolegs arranged in a circle broken outwardly. Dicymolomia julianalis 

 is also frequently found in cotton bolls. Its normal and favored food 

 plant is cattail (Typha sp.) in the spike of which it feeds and undergoes 

 its transformation. In some parts of Texas, however, we also found it 

 commonly in old and diseased cotton bolls, feeding upon the lint and in 

 some cases the cotton seeds. We did not, however, find it in any green 

 or healthy bolls. Larvae were collected in the region about Beaumont 

 during November, 191 8, and near Brownsville from December, 191 8, 

 until early April, 191 9. Adults issued from the latter part of March 

 until the middle of May. The species overwinters in the larval stage, 

 the caterpillars remaining in the fallen and rotting bolls and pupating 

 during February and early March. 



While very similar in superficial appearance to the pink bollworm 

 and easily mistaken for it by one not familiar with larval characters, 

 the caterpillar of Dicymolomia julianalis is easily distinguished on struc- 

 ture. The position of the anterior puncture (A a ) of epicranium back 

 of seta A 2 and the presence of only two setae on the small shield anterior 

 to the prothoracic spiracle at once separates it from Pectinophora. 



The pupa is smooth except for the normal body seta and a half dozen 

 slender hooked spines on the cremaster and is not likely to be mistaken 

 for that of Pectinophora gossypiella. 



The structural characters of both larva and pupa are fully figured in 

 Plates 101, 103, 106, and 108. 



SUBFAMILY PHYCITINAE 



MOODNA OSTRINELLA (CLEMENS) 



(PL. 104, E) 



Ephestia ostrinclla Clemens, 1861, in Proc. Acad. Sci. Phila., i860, p. 206. 

 Manhatta ostrinella Hulst, 1903, in Dyar, List North Amer. Lep., no. 4886. 

 Moodna ostrinella Barnes and McDunnough, 1917, Check List Lep. Bor. 

 Amer., no. 5795. 



The larva of this species is a scavenger feeding in diseased cotton bolls 

 in company with and in much the same manner as Dicymolomia julianalis. 

 It is a smaller caterpillar (8 to 9.5 mm. long) when full-grown. The 

 heavy, ringlike chitinization about tubercles II b of the mesothorax and 

 III of the eighth abdominal segment (PI. 104, E), which is so conspicuous 

 a feature on this and the following larva (Homoeosoma electellum), is a 

 character found upon most phycitine larvae but nowhere else, so far as I 

 know, outside of this subfamily. 



The caterpillar of Moodna ostrinella is a nearly uniform dirty white; 

 thoracic shield smoky fuscous divided on dorsum by a wide median 

 whitish line; body tubercles dark brown; skin finely granulate; body 

 hairs moderately long, pale yellowish; legs whitish, ringed with smoky 

 fuscous; head pale yellowish brown; labrum and anterior margins of 

 epicranium blackish brown; ocellar pigment a black spot under each 



