212 
Psyche 
[December 
sparse short and white. Hal teres yellow; wings almost hyaline^ 
veins dark brown, becoming paler at root, hind margin closely 
fringed with fine hair, anterior crossvein at two-fifths the length 
of the discal cell, anal cell open. 
Female. — Bases of abdominal segments two to six with 
broader black fasciae, seventh segment lightly black, venter 
with triangular black denuded marks increasing in size posteriorly, 
the sixth segment entirely black, some of tibial bristles blackish. 
Types. — Six specimens Pullman, Washington, and Collins, 
Idaho (C. V. Piper) July and August. T}^pe in collection of 
State College of Washington. 
Key to Species of Dioctria. 
Femora wholly black, the tibiae alone sometimes reddish.. . 2 . 
Femora and rest of legs wholly or largely j^ellow or red; 
mystax pale 11. 
2. Mystax fulvous and dense; body brilliant greenish black. 
(Cal.) resplendens Lw. 
Mystax generally black, rarely white, if fulvous not dense; 
body less brilliantly metallic 3 . 
3. Third joint of antennae one and one-half times the length 
of the two basal joints together and cylindrical {Banksi 
Johns.) 4. 
Third joint of antennae subequal to basal joints together. . .5 . 
4. Legs wholly black. (Va.) Banksi Johns., s.str. 
All tibiae reddish on basal half. (Va.) . . var. tibialis Banks 
5. Legs wholly black 6 . 
Tibiae more or less reddish-yellow 9 . 
6. Wings yellowish on basal half, blackish on apical half. 
(Cal.) parvula Coq. 
Base of wings not markedly yellowish 7 . 
7. Upper plate of hypopygium wide,- with two broad lobes; 
fulvous coat of mesopleura extending along upper edge 
only. (Eastern U. S., doubtful if in West) . .albius Walk. 
Upper plate of hypopygium narrow, pronged but not with 
fiat lobes 8 . 
