Broad-waist
Guides
Tenthredo leucostoma
Tenthredo leucostoma is a sawfly species in the family Tenthredinidae. Like other members of the genus Tenthredo, adults lack the narrow "wasp waist" characteristic of many Hymenoptera, with the abdomen broadly attached to the thorax. Females possess a saw-like ovipositor used to insert eggs into plant tissues. The species has been recorded in Canada, specifically from Alberta, Manitoba, New Brunswick, and Nova Scotia.