Taxodiomyia taxodii

Acericecis ocellaris

Dasineura communis

Contarinia negundinis

Contarinia juniperina

Itonida taxodii (Felt) makes the cypress leaf gall, a conical, globular or elongate deformation of the leaf.



Itonida ocellaris

Acer rubrum

The ocellate maple leaf gall (fig. 130) is believed to be caused by Itonida ocellaris (O. S.), although there is no positive record of its rearing. The gall or spot, which measures about 3 to 4 mm. in diameter, is yellow and has a red center and margin. The larva of I. ocellaris is nearly transparent and lives in an exposed position on the leaf. When full grown, about the latter part of September, the larva drops to the ground, where it spins a crude cocoon in which it pupates. The species is widely distributed but rarely, if ever, injurious. 

Dasyneura communis Felt, the gouty vein midge, produces greenish or reddish pouch vein galls about 6 mm. long.

Acer rubrum

Itonida negundinis (Felt), the boxelder gall midge, produces terminal bud galls with a diameter of 1 to 2 cm. or long fleshy galls along the midrib of the leaf. The species is reported to have caused serious injury at Ames, Iowa. 

Acer negundo

JUNIPERUS (Juniper)
 The larva of Contarinia juniperina Felt, the juniper midge, is a small yellowish maggot that produces a blister at the base of the needles, often causing them to drop to the ground. Numerous dead tips are the result of an infestation of this species. The adults emerge in April and lay their eggs beneath the needles.

Insect enemies of Eastern Forests