Andricus apiarium (agamic)

Liodora apiarium

Cynipidae

Feron

Quercus alba

Alabama

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Indiana

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Cynipid galls of the eastern United States

New American Cynipids from galls

Feron apiarium (agamic)

Liodora apiarium, new species 

Host: Quercus alba

Gall. Solitary, sessile, on underside of leaf close to edge in October, shaped like an old-fashioned straw beehive, white or pinkish, measuring up to 4.6 mm broad by 4.0 mm high. Inside is a large cavity with a transverse larval cell at very base. During the winter on the ground the outer fleshy layer shrivels and the gall becomes more cylindrical. Not common. 

Habitat. — The type is from a series of 16 that were found alive in out-of-door breeding cage on March 7, 1942, from galls collected at East Falls Church, Va., in October 1940. In galls collected at Vienna, Va., in October 1938 living adults were found the next October and one emerged on February 12, 1940, and others had emerged and died in the cage by April 15. Galls have been seen at Bluemont and Rosslyn, Va., Cabin John, Md., and Washington, D. C. 

Liodora apiarium

Quercus alba
Leaf galls, detachable
Solitary, sessile, 4 mm high, cell basal, on under side close to edge in fall on vigorous shoots six or 7 ft from the ground.

[Photo caption]
Solitary, sessile, 4 mm high, cell basal, on under side of leaf of white oak close to edge on sprouts a few feet from the ground.

Feron apiarium (Weld, 1944), comb. nov.

Gall (Fig. 36). Solitary, sessile, on underside of leaf close to edge, shaped like an old-fashioned straw beehive, white or pinkish, up to 4.6 mm broad by 4.0 mm high. Inside is a large cavity with a transverse larval cell at the very base. During the winter on the ground the outer fleshy layer shrivels and the gall becomes more cylindrical (Weld 1944).

Biology. Only females are known. Leaf galls on Q. alba (section Quercus, subsection Albae). Mature galls in October; adults emerge next year, in February–March.

Distribution. USA: Washington DC, VA (Burks 1979).

Re-establishment of the Nearctic oak cynipid gall wasp genus Feron Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), including the description of six new species