120 



A MANUAL OF DANGEROUS INSECTS. 



color creamy white, spotted, and marked with black and orange yellow at sides. 

 Appear in fall; winter as very small larvae, ready to pupate in June. Eggs, cream- 

 colored, laid singly or in groups; hatch in from 6 to 15 days. (See text fig. 63.) 



Distribution: England, Europe, Siberia, China. 

 Theobald, F. V. Insect Pests of Fruit, 1909, p. 206. 



Tbamnonoma wauaria Linnaeus. 

 (Currant Web worm. Geometridae; Lepidoptera.) 



Hosts: Ribes spp. 



Injury: Attacks leaves, buds, flowers, and often fruit. 



Description and biology: Adult, wing expanse 25 mm.; front wing piu*e gray with 

 brown and black crosslines; hind wing ashen gray dusted with black. Occurs June 

 and July. Pupates in or on ground. Larva, length 25 mm.; blue green with darker, 



^•^N 



Fig. 63. — Currant moth {Abraxas grossulariata): Adult, larva, pupa. (Entom. Parasit. Agric. 1904.) 



white bordered median line, and a yellow side stripe; on each segment a black tubercle 

 bearing bristles. Shortly before pupation mostly violet or reddish brown. 



Distribution: Northern Europe. 

 SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, p. 336. 



* Zophodia convohitella Hiibner. 

 (Pyralidse; Lepidoptera.) 



Hosts: Gooseberry and currant. 



Injury: To fruit and leaves. 



Description and biology: Adult, wing expanse 30 mm.; forewing brownish gray 

 with whitish and dark brown lines; occurs during end of April and beginning of May. 

 (Germany.) Pupa overwinters in shallow earth. Larva, length 10 mm.; color grass 

 green; head and thoracic shield black; occtirs from May until July; draws berries and 

 adjoining leaves together by a web; feeds on fruit. Egg deposited singly on twigs (see 

 text fig. 64). 



Distribution: Europe. 

 SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d., 1913, vol. 3, p. 336. 



