About Loxura atymnus (Cramer, 1782)
Male Loxura atymnus have bright fulvous uppersides. On the forewing, the apical margin from the middle of the costa is increasingly black, and this color continues down the outer margin while gradually decreasing in width; the inner margin of the black band forms an almost continuous curve. The hindwing has a very narrow, pale ochreous-brown band along its outer margin. Some suffusion of this same color appears at the base of both wings, continues down the hindwing (the abdominal fold is similarly colored), and extends to the end of the tail. The underside is dark ochreous-yellow, with pale blackish markings. On the forewing, two conjoined ring-spots cross the middle of the cell, and two similar spots cross the end of the cell, both somewhat indistinct. An indistinct spot sometimes sits above the end cell spots, near the costa. A discal, nearly straight band of conjoined ring-spots runs across the wing; the middle spot in this band is double, and the series ends in two black marks in the interno-median interspace. A very indistinct series of submarginal lunules is also present. On the hindwing, two sub-basal ring-spots, two in the cell, and two at the end of the cell are all very indistinct. A slightly inwardly curved discal band follows the same arrangement as on the forewing, and there is an indistinct submarginal series of lunules. There is small brown suffusion at the anal angle, and the tail is edged with brown. Antennae are black with white dots on the underside, and the club has an orange tip. The head and body are brown above and grey beneath. Females have a somewhat paler upperside than males, slightly broader marginal bands, and an underside that matches the male's. Eggs are dome-shaped and whitish, with a diameter of 0.92 (± 0.09) mm. First instar caterpillars are greenish yellow on the dorsal and dorsolateral sides, with long hair-like setae present dorsally and sub-spiracularly, and reach up to 2.98 (± 0.13) mm in length. Second instar caterpillars are greenish yellow with two brownish mid-dorsal bands. They lack the long setae that first instar larvae have. Their anal plate has a prominent depression. The anterior end has a crescent-shaped lip-like swelling, with a small groove on the head. Second instars reach up to 6.66 (± 0.34) mm in length. Third instar caterpillars are similar to second instars except for their larger size, reaching 9.7 (± 0.3) mm in length. Fourth instar caterpillars are initially similar to third instars, but their dorsal bands gradually become darker and wider, and they reach up to 19.62 (± 0.28) mm in length. Pupae attach to leaf surfaces via their cremaster, and use a silk girdle to secure themselves to a silk pad. They measure 13.61 (± 0.27) mm, and have a relatively long abdominal portion. Pupae are greenish, with a mid-dorsal brown and white band of cryptic patterns. After approximately 7 days, pupae darken in color, indicating they are approaching maturity. The pupal skin becomes transparent, allowing the orange patches on the upperside of the forewings to be visible through the skin.
