Mexico, USA & Canada
Family - LYCAENIDAE
subfamily - THECLINAE
Tribe - EUMAEINI
© Emily Halsey
Almost all neotropical Theclinae species are placed in the Eumaeini.
The tribe is not particularly well represented in collections, so
until fairly recently a high percentage remained unstudied, and were
inappropriately filed away in the 'convenience' genus
Thecla. Many taxonomists have attempted
to rationalise the systematics of the Eumaeini, the most recent
being Robbins who published a revision in 2004, reclassifying the
taxa into 83 genera. Currently there are 1058 known species. Taking
into account their small size, secretive behaviour, and the great
similarities between many species, it is estimated that about
another 200 species probably remain to be discovered.
The genus Chlorostrymon comprises of 6
known species, variously distributed from Texas to Chile. The
various species all have apple-green undersides, but differ in the
configuration and extent of the white markings. The uppersides of
the males are iridescent azure blue in all species, while the
females are brown, with a trace of silvery blue scaling at the base
of the wings.
Chlorostrymon simaethis is distributed
from Texas to Chile, and also occurs in Jamaica and on some other
This species is found in a huge variety of biotopes including
rainforests, deciduous forests and high elevation scrub / desert.
The altitudinal range extends from sea level to about 2800m.
The eggs are shiny, green and laid singly on the fruits of
Cardiospermum ( Sapindaceae ) or on the
flowerbuds of Eupatorium shrubs (
Compositae ). The larvae are yellowish-green, marked with pale
chevrons, and a pair of red spots midway along the back. They feed
and develop within the seeds or buds of the foodplants.
sexes nectar at Eupatorium. The adults
are usually encountered as singletons, and tend to sit motionless on
flowers or foliage for long periods, but have a rapid and erratic
flight, making it very difficult to locate them when they resettle.
Males also imbibe moisture from damp mossy boulders.