Triocnemidini New Genus 1
This species is erected for for two southwestern United States species; grandimacula and new species 1. It shares several structural characters with Poliocnemis despite the great superficial differences.
Some characters defining this genus are:
1) Perhaps the most interesting characters are in the female genitalia, in particular the articulation of the apophyses posteriores with the ovipositor lobes. The distal ends of the apophyses are covcave and look as if they were spoons, almost as if there was a hole through the round articulation.
2) The intersegmental membrane between the ovipositor lobes and the eighth abdominal segment is pleated as in an accordion. Probably some glandular function is played by this region. No specialized scales seem to be involved, however, as in Poliocnemis.
3) Superficially the species has elongate forewings much as in Psaphida but without the shaggy appearance of the species in that genus.
4) The foretibial claw is very strong with an accesory claw and the outer margin is produced as a knife like ridge.
5) This genus shares the two defining characters of the tribe, i.e. the characteristic structure of the abdominal spiracle and the inangled mdc in the hindwing. In fact the angle is perhaps stronger in this genus than in any other in the tribe and the medial vein is clearly present, more so than in any other genus.