Echmepteryx pretiosa, N.Banks, 1942

Banks, Nathan, 1942, Neuropteroid Insects from Guam, Insects of Guam I, Honolulu, Hawaii: Bernice P. Bishop Museum, pp. 25-30 : 28-29

13. Echmepteryx pretiosa , new species (fig. 1, e, g).

Face yellowish to gray, hair in middle and below white, darker each side by eyes; eyes with short, erect hair; vertex pale, with white hair, sometimes a dark spot each side; thorax with mostly pale yellowish hair, a tuft of dark each side in front; antennae gray, with basal joint brown, covered with fine, stiff hair; legs pale, tibiae with two dark bands; wings with mostly yellowish to whitish scales, but with spots and transverse bands of dark brown to black; two brown spots near base; an almost black band near middle, widened in middle behind, more or less connected to lateral dark spots beyond, and thence to a larger median spot; the extreme wing tip dark; anterior fringe mostly yellowish, but from middle out with patches of dark; hind fringe white toward base, then a large black patch beyond which is mostly whitish to gray.

Fringe on outer side fully one half width of wing. The scales as usual in genus are partly broad and short, with erect scales longer and slender, pointed; these scales in the proper light have a golden shimmer. Hind wings whitish hyaline, with gray fringe toward tip in front, and a very long white fringe on outer side, which toward base is fully two thirds of the wing width.

Both wings are falcate at tip, the fore pair more strongly so; hindwing with the front margin toward base plainly concave; venation as figured. Length of forewing, 1.4 to 1.6 mm.

Piti , Agat , Machanao , Upi Trail , Mt. Tenjo , Mt. Chachao , and Mt. Alifan , mostly in May, a few in late April and early June .

Type and paratypes in Hawaiian Sugar Planters' Association collection, also paratypes in Museum of Comparative Zoology (no. 23830).