Bulletin - United States National Museum

MICROLEPIDOPTERA OF PHILIPPINE ISLANDS 183
Material examined:
Luzon, Benguet Subprov., Klondyke, 800 ft.,
29.IV.1912, 1 d", holotype, genit. slide 5594; same locality, 12. III. 1912,
1 d", paratype, genit. slide 5592; 26.III.1912, 1 cf, paratype (A.E.
Wileman) (BM).
Closely allied to C. hesitans, differing by grey hindwings and
genitalia.
Chrysonoma inermis, new species
Figures 267-269, 656
Female, 12.5 mm. Head and thorax whitish, touched Adth creamy.
Antenna whitish, faintly light grey posteriorly. Palpus whitish,
median segment touched with fuscous below apex; terminal segment
faintly infuscated at extreme base. Abdomen whitish ochreous.
Forewing ovate-sublanceolate, costa moderately curved, more so
posteriorly, apex obtusely rounded, termen rounded, rather obUque.
Whitish, touched A\'ith creamy. Markings blackish fuscous. First
discal stigma slightly elongate, phcal stigma well beyond it,
second
discal larger, conspicuous, rounded; dark scales sparsely scattered
so as to form irregular groups: one on costa above second discal
stigma and a transverse group haKway between cell and termen,
from costa to above tornus, denser above; a series of dots between
veins just before tornal edge and in apex. Ciha whitish creamy with
fuscous-grey tips, limited greyish dusting at base opposite apex.
Hindmng and ciUa glossy whitish, faintly touched wdth greyish.
Female genitaUa: Sixth sternite modified, with a median excision,
flanked by subtriangular lobes. Lamella antevaginahs forming a
small dark semioval sclerite before ostium bursae; 8 + 9 segment
annular, strongly depressed, hairy. Corpus bursae elongate-plumeshaped.
Signum substellate.
Material examined:
Luzon, Benguet Subprov., Klondyke, 800 ft.,
3.V.1912 (A.E. Wileman), 1 9, holotype, genit. sUde 5595 (BM).
A small species of obscm-e affinity.
Tonica Walker, 1864
Key to the Philippine Species of Tonica
1. Unicolorous white, finely dusted with pale tawny towards costa, an oblique
raised transverse crest in disc T. argessa, new species
Not unicolorous white, markings distinct 2
2. Markings jet black, a conspicuous spot in apex, an oblique mark at 1/4 of
costa; ground color white, touched with yellow.
T. citrantha, new species
Markings brownish, a marginal series of dots along posterior half of costa
and in apex; ground color pale ochreous, more or less brownish suffused.
T. lagaropis