Oxycnemis new species 1
Diagnosis: The characters distinguishing Oxycnemis
new species 1 from advena were discussed under advena.
In short Oxycnemis new species 1 is larger on the average and
a lighter, bluer gray lacking a light patch between the orbicular spot
and reniform spot and a black patch between the claviform spot and postmedial
line. The most distinctive feature of the forewing is a white streak sweeping
up from the reniform spot toward the apex of the costa. Male antennae
simple and ciliate, not laminate as in advena. Male genitalia
uncus four times as long as its widest part, longer than in advena.
Female genitalia: unknown.
Distribution: Oxycnemis new species 1 is known only from the Huachuca Mountains in southern Arizona. The hindwing of the male is pure white except for a narrow darker outer margin but the hindwing of the female is suffused with brown. There are too few available specimens to make any judgements on variability. .
Identification Quality: Excellent
Oxycnemis new species 1
Oxycnemis advena is a black gray species most likely to be confused with Oxycnemis new species 1. Unlike Oxycnemis new species 1, however, there is usually a distinct whitish patch between the orbicular spot and the reniform spot absent in Oxycnemis new species 1. There is normally also a black patch connecting the claviform spot to the postmedial line. The antemedial line in advena is obliquely straight with at most a small tooth medially, but in Oxycnemis new species 1 there is most often a large tooth in the middle of the antemedial line projecting into the claviform spot. The color is different. Oxycnemis advena is black gray but Oxycnemis new species 1 is more of a steel gray color with a slightly blue tinge. Although there is considerable variation in size in both of these species, Oxycnemis new species 1 is on the average much larger than advena. The average forewing span of the male from base to apex is 8-9 mm in advena and 11-12 mm in Oxycnemis new species 1. The male genitalia are almost indistinguishable. However the clasper of the valve in advena is about one third to one half the distance from the base to the apex but is one fourth to one third the distance in Oxycnemis new species 1. The uncus of advena is shorter and wider in advena than in Oxycnemis new species 1. In particular the length of the uncus in advena is approximately three times as long as its widest part but in Oxycnemis new species 1 is at least four times as long as wide.