1977] 
Adams — Leucoehrysa 
95 
Leucoehrysa arizonica (Banks) 
Figures 5-9, 17-18 
Allochrysa arizonica Banks 1906: 98. Holotype: Palmerlee, Ariz., July, male, M.C.Z. 
No. 11403 (not dissected). Banks 1938: 122; Bickley and MacLeod 1956: 184. 
Head, palpi, antennae pale except red marks on gena, vertex, 
pronotum, mesoprescutum, as in Figure 9. Wings pale, forewing 
with short red-black marks on middle of several costals, and on 
anals, pseudocubitals, marginal forks behind pseudocubitus, pseu- 
domedials, basal radials and branches of Rs. First two medial 
crossveins wholly red, gradates brown. Membrane suffused with 
brown at basal inner gradate, and at distal pseudomedial crossvein; 
no brown spot at base of stigma. Height of tallest c-cells 3.0 times 
width, 19-20 radials, 1 1-12 inner gradates, series follows psm basad, 
proximal inner gradate nearly perpendicular to and ending on psm; 
10-11 outer gradates, marginal fork nearest last pseudomedial cross- 
vein 5.6 times as long as wide; 10 apparent pseudomedial cross- 
veins, distal crossvein oriented as an extra outer gradate. Hind wing 
veins pale, dark spot at base of stigma. 
Male: sternites 2-8 with microtholi (Fig. 5); sternite 9 bears a 
pair of denticulate forcipate processes; a field of small microtrichia 
posteriorly. Ectoprocts notched, ventral lobe hairless; callus cerci 
black posteriorly. Gonarcus (Fig. 7-8) heavily sclerotized, 3 thin 
plates form low hood above bluntly hooklike mediuncus; gonosetae 
sparse, small. 
Female: Subgenitale (Fig. 17, 18) as broad as seventh sternite, 
conspicuously exposed even in dried material, shiny red-brown, 
laterally bearing downturned angular process; apical pit deep, bor- 
dered by two thin nearly vertical ridges. Dorsally to the subgenitale, 
membrane surrounding oviducal opening and forming floor of cop- 
ulatory bursa expanded and tanned. Spermatheca pillbox shaped. 
Copulatory bursa much as in L. insularis. 
Specimens examined: Arizona: Santa Rita Mts., Madera Can., 
12— 13— VI— 1968, female, Menke and Flint, USNM. Mexico: Mi- 
choacan, Jet Hwy 4 and Huetamo Rd., 15 mi. E. Morelia, 8-VII- 
1947, male, T. H. Hubbell (Univ. of Michigan); Jalisco, Ajijic, 
1 6— 1 8— VI I I 966, Flint and Ortiz, 6 specimens (USNM and PAA). 
This is a much more robust insect than L. insularis, easily rec- 
ognized by the color markings of the head, and unusual external 
