Eumayria invisa

Cynipidae

Eumayriella

Quercus myrtifolia

Alabama

Florida

Georgia

Mississippi

South Carolina

Eumayriella invisa (agamic)

Eumayria invisa

Quercus myrtifolia
Stem galls, cells hidden under bark
Cells just under bark. Adults cut out Nov 17.

[Photo caption (no photo)]
Cells under bark of Q myrtifolia. Living adults with short wings were cut out Nov 17. 

Cynipid galls of the eastern United States

Eumayriella invisa (Weld) New Combination

Eumayria invisa Weld

Diagnosis.--Difficult to distinguish this species [from Eumayriella archboldi] on the basis of galls alone. Galls similar to those caused by Callirhytis crypta, Bassettia floridana. Adult wasps are necessary for precise identification.

Distribution.--FL

Biology.--Only a unisexual generation is known. Induces stem galls in the form of small larval cells hidden under the bark, usually without external evidence of galling on Quercus myrtifolia. Adults were dissected from galls in November. Adults emerge in January in south-central FL. 

SYNONYMY OF TWO GENERA (EUMAYRIA AND TRISOLENIELLA) OF CYNIPID GALL WASPS AND DESCRIPTION OF A NEW GENUS, EUMAYRIELLA (HYMEN0PTERA: CYNIPIDAE) 

Eumayriella invisa (Weld 1952)

Hosts: Quercus myrtifolia

[Asexual generation stem swelling gall found in Florida in the fall.]

Using gall wasps on oaks to test broad ecological concepts