THE CACTUS-FEEDING PHYCITINAE — HEINRICH 373 



Genitalia (figs. 19-19c) with vinculum rather longer than that of 

 any other species in the genus ; anellus with arms bent about aedeagus, 



FeTnale. — Similar to the male in color and markings except that 

 the hind wings are a trifle darker. 



Alar expanse, 2^23 mm. 



Genitalia similar to those of gradella. 



Type. — In United States National Museum. 



Type locality. — Tehuacan, Mexico. 



Food plant. — Unknown. 



Dktrihution. — ^Mexico: Tehuacan (May, June), Orizaba. 



Three specimens (one male and two females) examined. 



Remarks. — This species resembles gradella but is somewhat paler 

 and the male has slightly darker (smoky) hind wings. It is at once 

 distinguished by the dark line on the midcosta of the fore wing. Its 

 life history is unknown. 



10. Genus TUCUMANIA Dyar 



Tucttmcmia Dyar, Insecutor Inscitiae Menstruns, vol. 13, p. 224, 1925. (Genotype : 

 Tucumania tapiacola Dyar.) 



Antenna of male shortly serrate and pubescent, of female simple 

 and shortly pubescent. Labial palpus of male upturned, reaching 

 almost to level of top of eye ; of female porrect (the second segment 

 oblique, the third slightly downcurved) . Maxillary palpus squamous. 

 Hind wing with veins 7 and 8 anastomosing for a short distance be- 

 yond cell; 3 and 5 stalked. Eighth abdominal segment of male 

 simple. 



Male genitalia witli apical process of gnathos bifid; harpe with 

 apex bluntly pointed or elliptically rounded; vinculum moderately 

 long (it is somewhat foreshortened in fig. 17), broad; anellus with 

 base of plate moderately sclerotized, arms rather broad and long, 

 slightly twisted ; aedeagus long, slender ; penis weakly scobinate to- 

 ward outer extremity. 



Female genitalia with signum a small ridged or granulate plate; 

 bursa copulatrix with some fine scobinations in the area about sig- 

 num; ductus seminalis from bursa near junction of bursa and ductus 

 bursae. 



Larva purplish or wine colored with sclerotized areas about body 

 tubercles dark brown and large; two setae in group VII on abdominal 

 segments 7 and 8. 



The larvae are solitary feeders in the joints of Platypuntias. 



Eggs laid singly. 



Remarks.— This genus is distinguished from others having serrate 

 and pubescent male antennae and squamous maxillary palpi by its 

 host association, its upturned male palpi, slender aedeagus, female 



