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Psyche 
[Vol. 87 
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Process of 9th sternum ending in a central, caudally directed, 
pointed process. .cupressi 
Process of 9th sternum not as above. werneri 
Process of 9th sternum with 4 caudally directed processes, 2 
central and 2 lateral. dragoonica 
Process of 9th sternum ending in 3 processes, 1 central, 2 lateral 
. 6 
Caudal projections of process of 9th sternum subequal in 
length.... arceuthobii 
Central caudal projection of process of 9th sternum much larger 
than lateral ones. knowltoni 
Sclerotized structure present just ventral to dorsal roof of 9th 
sternum.8 
No such structure present.10 
Structure just ventral to dorsal roof of 9th sternum with 4 
caudal projections. simillima 
Structure with 2 caudal projections.9 
Two caudal projections strongly curved forward at the tip to 
form pronounced hook. maculipennis 
Two caudal projections only slightly bent ventrally at tip .. 
. arizonica 
Penis ending posteriorly in 3 small, subequal projections ... 
. juniperi 
Penis not as above.11 
Process of 9th sternum simple. vulgaris 
Process of 9th sternum with an incision; not simple.12 
Penis ending posteriorly in 2 lateral processes. unicolor 
Penis ending posteriorly in a ventral and a dorsal process.. 
.13 
Dorsal process of penis as long as or longer than ventral 
process. longipennis 
Ventral process of penis much longer than dorsal process .. 
. megacornis 
Aleuropteryx arceuthobii Meinander, 1975 
Aleuropteryx arceuthobii Meinander, 1975 p. 28. Type: Holotype 
male; Colorado; USNM. 
Head: Dark brown. Antennae 20-25 segmented; brown. Scape 
and pedicel about twice as long as broad; proximal flagellar 
