FIELD BOOK OF INSECTS. 



Plate C shows: Rhodites bicolor (Fig. i), 

 yellowish-green sometimes tinged with red 

 in summer, brown in winter; R. radicum (Fig. 2), on root; 

 R. globulus (Fig. 3), smooth, abrupt at ends; R. dichlocerus 

 (Fig. 4), tapering at ends, reddish; R. roscz (Fig. 5\ mossy 

 mass containing hard cells; R. ignota (Fig. 8), white-mealy 

 surface, rather round, sometimes coalescing; R. vernce 

 (Fig. 7), reddish; R. lenticularis (Fig. 6), somewhat 

 flattened. 



Plate C, Fig. 9: Diastrophus radicum, 

 Raspberry especially on roots of black raspberry; 



varies from size of a pea to 2 x I inches. 



Plate C: Diastrophus bassettii (Fig. 10), 

 Blackberry Qn t ke stems o f trailing blackberry close 



to the ground; greenish, tinged with red, pithy with 

 many rounded cells; D. nebulosus (Fig. n), dark green, 

 turning reddish; D. cuscutceformis (Fig. 12). Lasioptera 

 farinosa makes an irregularly ridged, warty, light brown 

 swelling, about half an inch long, on the under side of 

 leaf- veins; L. nodulosa, an irregular, elongate swelling about 

 an inch long on the smaller branches. 



Cecidomyia bedeguar makes a tufted, 

 Crataegus nearly globular gall, about half an inch in 



diameter, on midribs; and Hormomyia cratcegifolia, a cocks- 

 comb gall on the leaves. 



Plate C, Fig. 13: Gonaspis potentillcE, 

 Cinquefoil on axilg of leaves> single-celled. Two 



species of Diastrophus, niger and minimus, make galls on 

 the stems. 



Plate C: Acarus serotincz (Fig. 14) , 

 Wild Cherry hollow, stemmed pouches, opening on 

 under side of leaf; Cecidomyia serotina (Fig. 15), bright 

 red in spring. 



468 



