ARGYNNIS X. 
ARGYNNIS LETO. 
Argynnis Leto , Behr, Proc. Cal. Acad. Nat. Sci. Phil. 1862. 
Primaries broad, moderately arched, slightly convex on hind margin 
Male. — Expands from 2.6 to 3 inches. 
Upper side pale fulvous, obscure at base, lightly marked and spotted with black ; 
hind margins of both wings bordered by two fine parallel lines between which the 
space is fulvous; primaries have a submarginal row of serrated spots, not touching 
each other or the marginal lines ; a transverse line of rounded spots, an indistinct 
bar on costal margin, sometimes wanting, a zigzag median band of separated spots, 
mostly lunular; outside the arc a spot shaped like the letter P inverted, and three 
sinuous bars across the cell. 
Secondaries have a submarginal row of lunate spots, separated and not touch- 
ing the marginal lines, a second of small rounded spots or points, and a mesial of 
small widely separated crescents in size and shape like those of Aphrodite; on 
the arc a pyriform or obovate spot. 
Under side: primaries pale fulvous at base, light buff on costal margin and 
in the marginal interspaces, the nervules edged with brown; the sub-apical 
patch brown; submarginal spots serrated, enclosing buff spaces, not silvered; other 
markings as on upper surface. 
Secondaries dull ferruginous from the base to second row of spots; between 
the two outer rows a broad buff belt as in Cyhele; the silver spots are twenty-one 
or twenty-two in number, viz; seven submarginal, lunate, edged with ferruginous 
below and above; the second of seven or eight, all but the last heavily edged above 
with black, and projecting a brown shadow upon the belt, the first, second and fifth 
largest, third and sixth half the size of the others, the fourth minute, the seventh 
and eighth, (when present) streaks; the third row of three, edged also with black 
above; a small rounded spot in the cell, a patch at origin of median nervure and 
another at base of costal; costa at base and abdominal margin slightly, if at all, 
silvered. 
Body above dark brown, beneath, abdomen yellowish; palpi fulvous; antennae 
fulvous; club black tipped with fulvous. 
