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The relatively long antennae often reach half of the front wing length. Riodinidae have an unusual variety in chromosome numbers, only some very basal groups have the number typical for butterflies (between 29 and 31) or the number characteristic of Lycaenidae (23 to 24).
Antennae can also locate other group members if the insect lives in a group, like the ant. The common ancestor of all arthropods likely had one pair of uniramous (unbranched) antenna-like structures, followed by one or more pairs of biramous (having two major branches) leg-like structures, as seen in some modern crustaceans and fossil ...
Description: Insect antennae types- The antennae consist of the Scapus at the base which is usually larger in size than the following segments.Next is the Pedicellum followed by the Flagellum which can consist of one or many parts called Flagellomeres.
The body is small compared to the wings. The upper side of the wings is reddish brown with a pattern of black, white, pink, and purple lines. There are triangular, scale-less windows bordered in black on each of the four wings. The undersides of the wings are paler. The tips of both forewings have prominent extensions that resemble the head of ...
The wingspan is 34–48 mm. Wing pattern is very variable, from entirely white wings to strongly covered with black dots. Hindwings often with one or several black dots (rarely without any black dot). Antennae branches long (much longer than in similar Spilosoma urticae), 3–5 times longer than the antenna stem diameter.
Antennae black with white rings at the articulations; head, thorax and abdomen black; beneath, the palpi and abdomen white, the thorax black. Female is similar to the male, but the forewing with the black apical and terminal areas proportionately narrower; hindwing with a series of spots instead of the subterminal pale line on the upperside.
[3] Adults are large-bodied and black, with very long antennae; in males, they can be up to twice the body length, but in females they are only slightly longer than body length. Both sexes have a white spot on the base of the wings, and may have white spots covering the wings. Both males and females also have a spine on the side of the ...
Antennae, head, thorax and abdomen brown; antennae sometimes cinereous white on the sides with the apex black. Male sex-marks in form 2, but that on the underside of the fore wing small (about 2 into, long) and black. [3] Expanse 42–54 mm. [3] [4]