No.i2'jo. LARV.1£ OF MUTIIS FROM COLORADO— DYAR. 401 



May 25. Others from wild cherry mixed with Genopis directana, from 

 which I do not know how to distinguish them. This is not more than 

 a variety of Cacoecla argyrosjJtla; it has the same markino-s, hut 

 bright red brown on a pale yellow ground. All the specimens are 

 from Colorado, while (J. argyroaptla is widely distributed. 1 have 

 thought best to give it a distinctive name. It has been bred at the 

 Department of Agriculture under the No. 4464. 



CACOECIA SEMIFERANA Walker. 



Larva. — Head black, diluted whitish on the face; cervical shield 

 greenish, black on the edges. Body translucent green, blackish from 

 the food. Male glands 3"ellowish, subventral fold somewhat opaque. 

 Feet pale, those of joint 2 black. 



Webbing the leaves of oak and apparently confined to this tree. A 

 number of very young ones were collected iu the Platte Canyon May 

 18, mixed with other Micro larvse on the young oak leaves. Imago, 

 June 11. 



CACOECIA NUGUNDANA Dyar. 



Larva. — Head rounded, obliquely extended, pale green, ocelli black, 

 jaws brown. Body tortriciform, slender, normal, rapidly moving. All 

 translucent pale green, tubercles inconspicuous, concolorous, sette pale 

 and rather long; dorsal vessel dark. Male glands light yellow, distinct. 

 Feet green ; no marks. 



Spinning up the leaves of the box elder, defoliating the trees in 

 Denver and Golden, not seen on any of the trees in the Platte Canyon. 

 The moth is very like C. semiferana., but is very markedly paler; I 

 think it a distinct species. The larva is always entirely green in all 

 stages while the other larva has a black head, onh^ becoming whitish 

 on the face in the last stage. The food plants seem constant foi" both. 



Professor Fei'nald tells me that Prof cssor Riley had named this moth 

 after its food plant as 1 have done, but 1 am not aware of any published 

 description nor was he. 



CACOECIA CERASIVORANA Fitch. 



These well-known larvte wore found in the Platte Canyon, webbing 

 up amass of leaves of the wild cherry into a head, within which a large 

 number of them were found. Head, shields, and tubercles are black, 

 the body shaded blackish all over. Male glands yellowish. Imago, 

 June 24. 



CACOECIA ROSACEANA Harris. 



Larva. — Head brownish luteous, epistoma white, apex under joint 

 2. Body all green, slightly shining, no marks; cervical shield large, 

 green, narrowly black i-immed at the sides and behind continuously. 

 Tubercles small, slightly elevated. Thoracic feet pale, the anterior 

 ones dark brown; crochets of abdominal feet in an ellipse. 

 Proc. N. M. vol. XXV— 02 26 



