Synonyms and other taxonomic changes
=scalpellator Westwood 1837
Explanation of Names
Ibalia (Tremibalia) anceps Say 1824
predominantly yellow with black markings on head, thorax, and abdomen; first hind tarsal segment longer than remaining segments combined; 2nd hind tarsal segment has long apical process extending to tip of 4th tarsal segment; abdomen compressed laterally (almost knife-like) and longer than head and thorax combined; antenna 13-segmented in female, 15-segmented in male; forewing mottled with brown spots (3 morphs of I. anceps are recognized, each morph differing in wing color pattern)
e. US & se. Canada (NS-ON-WI-CO to FL-TX)(2)
adults may be seen ovipositing on hickory trees, inside which larvae of Tremex horntails are present
The only other eastern species, I. leucospoides, has a black head and thorax, and an unmarked dark red abdomen.