152 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Reared by Mr. J. Brunner. 



Allied to L. gallae-saliciana Riley, from which it is at once dis- 

 tinguished by the dark basal patch of the fore wings. 



Laspeyresia leucobasis, new species. 



Labial palpi and face light ochreous gray. Head and thorax darkei 

 gray. Forewings with basal patch gray concolorous with thorax, out- 

 wardly angulated on the middle and edged by .a broad transverse out- 

 wardly angulated ochreous white fascia, which is but slightly mottled 

 with gray on the costal and dorsal edges; outer half of the wing dark brown 

 with four pairs of short whitish ochreous costal streaks and two short 

 whitish ochreous terminal streaks, one below the apex and the other above 

 tornus; irregular interrupted transverse bluish metallic lines form an 

 illdefmed ocellus, which contains faint short black lines; on the fold ad- 

 joining the light transverse fascia is a large deep black illdefined spot and 

 on the end of the cell is a round black spot. Cilia coppery brown. Hind- 

 wings blackish brown. Abdomen dark brown. Legs light ochreous brown 

 with dark brown tarsal annulations. Alar expanse: 12-13 mm. 



Habitat: Evaro and Missoula, Mont. 



Foodplant: Larix occidentalis and Picea engelmanni. 



Type: Cat. No. 20339, U. S. N. M. 



Bred by Mr. J. Brunner from the former tree and by Mr. B. 

 T. Harvey from Picea. 



A very distinct species nearest to L. tana Kearfott, but differ- 

 ing in the light basal part and the much darker apical half; L. tana 

 is also at once distinguished by the whitish cilia of the hindwings. 

 Laspeyresia fletcherana is also closely allied, but is a lighter species, 

 with the basal light part of the forewings much less sharply de- 

 fined from the darker apical part of the wing. 



Laspeyresia laricana, new species. 



Labial palpi blackish fuscous. Face, head and thorax blackish fuscous. 

 Forewings blackish fuscous with white and silvery transverse pattern and 

 indistinctly dusted with light yellow scales; five white, geminate costal 

 dashes; the first just before the middle, the second just beyond the middle 

 and the three outer ones on apical third of costa; from the first of these 

 geminate dashes runs an outwardly angulated, white, double fascia to the 

 middle of dorsum, containing a narrow black central line and some metallic 

 scales on the middle of the wing; from the second geminate spot runs a 

 similar fascia, which, however, does not reach dorsum, but forms the inner 

 edge of the ocellus; the lower part of this fascia is strongly overlaid with 

 metallic scales; from the penultimate costal dash runs a broken irregular, 

 metallic white transverse line along the outer side of the ocellus; this 

 latter contains three parallel, longitudinal black lines; cilia dark bronzy 

 with a black basal, marginal line. Hindwings and abdomen blackish 

 fuscus. Alar expanse: 14-17 mm. 



