Mar. i, 1921 Lepidoptera Likely to Be Confused with Pink Bollworm 815 



fuscous. Legs fuscous on outer sides; banded with white on middle of tibiae and at ends 

 of joints; white on inner sides. Male genitalia of type figured (PI. 96, C-F). Alar 

 expanse 12 to 13 mm. 



Habitat. — Brownsville, Tex. (E. L. Diven). 



Food plant. — Lantana horrida. " Larvae making a narrow blotch mine at the edge 

 of the leaf and curling the edge near base, pupating within the mine" (Diven note). 



Type. — Cat. No. 23741, United States National Museum. 



Described from male type and one male and three female paratypes 

 reared from larvae collected April 22, 1919. Moths issued April 27 to 

 May 5, 1919- Named in honor of the late Emerson IJscum Diven. 



The larva when full-grown is 7.5 to 9 mm. long; white, with the tho- 

 racic segments and the anterior portion of the first abdominal segment a 

 brilliant wine-red ; in fully fed specimens there is often a pinkish suffusion 

 on the dorsum of the abdominal segments; thoracic shield yellow, 

 posteriorly and laterally edged with dark brown; anal shield pale yellow; 

 other chitinized portions of thoracic segments dark brown; thoracic legs 

 blackish brown, paler on inner sides; body tubercles deep brown, minute; 

 setae pale, slender, moderately long; crochets of prolegs dark brown, 

 24 to 26, biordinal and in a circle broken outwardly ; spiracles pale yellow, 

 small, round, inconspicuous; no anal fork; head pale yellow with a dark 

 brown band on each side, extending from the ocelli to the lateral incision 

 of the hind margin; ocellar pigment black, continuous under the ocelli. 



The pupa is rather stout and short, 1.5 to 2 mm. wide by 4.5 to 5 mm. 

 long; pale yellow-brown; smooth; caudal end rounded; cremaster ab- 

 sent ; wings and antennae extending to anterior margin of sixth abdominal 

 segment; labial palpi clearly defined but small, not extending to proximo- 

 lateral angles of maxillae; between genital and anal openings a divided, 

 blackish, chitinized rise, without spines, hairs, or other armature. 



This species is easily distinguished from the other American forms in 

 the genus by the straight median fascia. I have placed it in Borkhausenia 

 advisedly, although strictly speaking it does not belong there. In any 

 further revision of the Oecophoridae, Borkhausenia divini with B. 

 conia Wlsm., B. fasciata Wlsm., B. episcia Wlsm., and probably B. orites 

 Wlsm., will have to be placed in a new genus. While agreeing with the 

 type of Borkhausenia (J5. minutella L.) on venational characters, they 

 differ markedly in genitalia. In B. minutella (Pi. 96, A, B) the harpes 

 are typically oecophorid and laterally placed, the uncus present though 

 small, the eighth abdominal segment simple, and the entire apparatus 

 symmetrical. In B. diveni and its allies, on the other hand (PI. 95-97), 

 the eighth abdominal segment is distinctly modified, the uncus is absent, 

 the harpes more ventrally placed, and the genital apparatus consistently 

 asymmetrical. The characters of their genitalia are those of the genus 

 Triclonella Busck, from which the species are separable on venation, 

 B. diveni and its allies having 5 of the hind wing distinctly separate at 

 base from the stalk of 3 and 4. The presence of a few raised scales on 



