American iNSErx Galls: Thompson 51 



f Choristoneura ramuscula Beut. '07, p. XVII, fig. 7-S, Afslcr patens. 

 ■ \ Rhopalomyia astericaulis. Felt. Mass. Ovoid, swelling of twigs. 

 Neolasioplera ramuscula Beut. and Rhopalomyia astericaulis Felt. 



322. Gnorimoschema g-asteriella. Aster corymbosa. Mass. June. Ovoid, hollow stem gall, 

 larva very small. Plant not 6 in. high. 



BALSAM (Abies) 



299. Cecidomyia. Impatiens fulva. Mass. .July. Starts as a swelling of mid-rib of leaf near 

 base in mid-July, later extends to the base of the blade so that it appears as if on the 

 petiole; ovoid, 1 cm. x 3 mm. Mature by Sept. 

 Lasiopiera impatientifolia Felt. 



284. Cecidomyia impatientis. 0. S. '67, p. 204. Impatiens fulva, N. H., Aug. Gall is a de- 

 formation of a flower bud made imperfect. Within succulent, containing numerous 

 cells and slender, dark orange larvae. 



BAYBERRY (Mijrica) 

 157. Eriophyes (?). Bayberry, R. I. Abort of branchlet making a witchbroom. 



BEECH (Fagus) 



31. Beech leaf fungus. Phytoptus species, N. H., Aug. Silvery or russet scurf of clavate hairs. 



BIRCH (Betula) 



32. Fungus of Black Birch. Phytoptus species, Mass., June. Silvery or crimson scurf of clavate 



hairs. 

 111. Eriophyes (?). Fungus. White birch, Mass. July. Areas of brownish yellow scurf on 



leaves. 

 140. Eriophyes. Phytoptus species, Betula lenta, Mass. Aborts branches to a dense clump of 



buds, plate 7, 140. 

 Eriophyes species. 



BLACKBERRY (Rubus) 



87. Lasioptera nodulosa. Beut. '07, p. 397, pi. 15, fig. 5. Riibus villosus, Mass., R. I. Sept. 

 Series of oval enlargements of stem; multicellular. Cells confluent and woody at 

 center, jilate 7, 87. 

 292. Cecidomyia farinosa. 0. S. '07, p. 204. Riibus villosus, Mass. Sept. On miil-rib of 

 leaflets near base of blade 1-1-2 cm. wide; irregularh' rounded, surface crackled antl 

 very scurfy. Cells are small and basal, plate 8, 292. 

 Lasioptera farinosa O. S. 



BOX ELDER (Negundo) • ' 



148. Twig mop on box elder. Mass., R. I. July. 



BUTTON BUSH (Cephalanthus) 



29. Button Bush gall. Mass. July. Warty areas ou leaf, tomentosc at summit; depressed 

 below as if eroded, plate 8, 29. 

 Unknown. 



