Mexico, USA & Canada
Family - LYCAENIDAE
subfamily - THECLINAE
Satyrium behrii crossi, Wyoming, USA ©
Almost all neotropical and North American Theclinae species are
placed in the Eumaeini.
The tribe is not especially well represented in collections, so for
a long time many 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
are 64 described species in the genus Satyrium,
which has at various times been known by the synonyms
Nordmannia, Pseudothecla and
Strymonidia. The genus occurs across
the temperate, sub-arctic and subtropical regions of the northern
In North America
there are 13 Satyrium species, All have
grey or brownish-grey undersides. The patterning varies considerably
from one species to another. Some species such as
titus have a row of prominent black post-median spots, while
in others these are replaced by the fine lines that give
"hairstreaks" their colloquial name. In behrii
and several others this streak is broken up into a series of
staggered dashes. All Satyrium species
have earthy brown uppersides, and in the case of
behrii the basal areas of the wings are
a metallic coppery colour.
Satyrium behrii is found in the western
states of the USA.
This species is
associated with chaparral, sagebrush and open areas of pine forest.
The eggs are
greenish-white, dome shaped, finely reticulated, with a conspicuous
micropyle. They are laid singly on twigs or leaves of
Cercocarpus. ( Rosaceae ). The caterpillars are of the
typical louse-like Thecline shape, and are green, with white, green
and yellow diagonal bars on the sides, and and a bluish-white dorsal
stripe. The chrysalis is pale tan, with tiny dark specks.
Males perch on the
foliage of bushes to await and intercept passing females. Both sexes
nectar at a wide range of herbaceous flowers.