Oligotrophus betheli, new species.

Gall: Length 7 mm., brown, fleshy, conical and containing an orange or yellowish larva in a central cavity some 3 mm. long.

Host:
Juniperus osteosperma (syn. Juniperus utahensis)

Oligotrophus betheli
Tip Gall Midge

This gall midge induces galls on branchlet tips of western juniper. Galls are barely discernible, as there is no overt swelling or obvious abnormality.

Host:
Juniperus occidentalis

Oligotrophus betheli

The needles covering a gall are green at first and turn red or black only when the larva inside approaches full growth
Affected buds die after the gall midges emerge

Hosts: J. ashei, J. chinensis, J. horizontalis, J. scopulorum, J. "utahensis" [Juniperus osteosperma], J. virginiana

Distr: New Jersey to British Columbia and California