Dec., 1914.] 
Insect Galls of Cedar Point. 
385 
Fig. 40. Rosa sp. affected by the gall-wasp Rhodites nebu- 
losus Bassett. 
Lytorhodites nebulosus Kieffer. 
Bassett, Trans. Am. Ent. Soc. XVIII:63. 
Beutenmuller, Bull. Am. Mus. XXIII:644. 
Leaf gall on under side, globular, light green to golden brown, 
and covered with short spines. Diameter 5-8 mm. Castalia, 
July. Rather scarce. 
Fig. 41. Rubus nigrobaccus affected by the gall-wasp 
Diastrophus nebulosus O. S. 
Osten Sacken, Proc. Ent. Soc. Phil. 11:36. 
Stebbins, Bull. 2, Springfield Mus. 36. 
“Cane gall,” being an irregular swelling of varying length 
(5-8 cm.) and showing several longitudinal ridges, each forming 
the abode of an individual larva. Occasional at Castalia. 
Fig. 42. Prunus serotina affected by the mite Eriophyes 
serotinae Beutenm. 
Acarns serotinae Beutenmuller, Bull. Am. Mus. IV:278. 
Stebbins, Bull. 2, Springfield Mus. 40. 
Leaf gall, usually on upper surface, showing as a small pouch 
with long, slender neck, opening below. 5-10 mm. long, 1-3 mm. 
wide, leaf-green to rose. Chalcid inqui lines are frequently 
present. 
Fig. 43. Prunus virginiana affected by a mite, Eriophyes sp. 
The gall is very like the preceding, undergoing a simultaneous 
cycle, but is very much smaller, 1-2 mm. in length. Either 
the well-known chemical differences of the two kinds of leaves 
cause them to respond differently to the attacks of the same 
species of mite, or what is more probable, two species or varieties 
of mites are indicated. 
Fig. 44. Prunus virginiana affected by the gall-gnat Con- 
trinia virginiana Felt. 
Cecidomyia virginiana Felt. 
Flower of fruit gall, evident as an abnormal swelling of the green 
fruit. On June 29, when normal fruits were 4-5 mm. diameter, 
galled specimens were 7-10 mm. and of a sickly yellow-green 
color. Quite common. 
Fig. 45. Gleditschia triacanthos affected by the gall-gnat 
Dasyneura gleditschiae O. S. 
Cecidomyia gleditschiae Osten Sackcn, Proc. Ent. Soc. Phil. VI:219. 
Felt, Journ. Ec. Ent. IV:461. 
Pod-like gall, caused by the closure and subsequent dis¬ 
tension of leaflets. Of varying size and extent within each 
leaflet. Frequently showing inquiline mites and aphids. Common. 
