INSECTS OF PLUM AND CHEEEY. 177 



Cryptophaga unipunctata Donovan. 

 (The Cherry Borer. Xyloryctidas; Lepidoptera.) 



Hosts: Cherry, peach, honeysuckle. 



Injury: Very serious. Makes shallow tunnels in branches of trees. 



Description and biology: Adult, wing expanse 37 mm.; a white satiny moth; front 

 of head, antennae, and a dot on forewings, black. Larva, length, 50 mm.; pinkish 

 white, hairy; covers entrance to binrrow with silken web in which collects the sawdust- 

 like excrement. (See plate xxxiv.) 



Distribution: Australia. 



French, C. Handbook of Destructive Insects of Victoria, 1891, pt. 1, p. 113. 

 Froggatt, W. W. Australian Insects, 1907, p. 277. 



Olethreutes pniniana Hilbner. 



(Plum Bud-moth. Tortricidse; Lepidoptera.) 



Host: Prunus sp. 



Injury: To buds and shoots. 



Description and biology: Adult, forewing 7-8 mm.; from middle of fore margin to 

 inner angle, bluish black, mixed with brownish black; border third golden white 

 clouded with brownish gray; apical point deep black; palpi grayish black; occm*3 

 June and July (Germany). Pupates in grass, or between leaves sewed together, 

 dm-ing latter part of May. Larva, length 20 mm.; greenish yellow, head white, 

 divided thoracic shield and anal lobes shining black; feeds in shoots and developing 

 leaves drawn together; occurs in spring until middle of May. Eggs placed singly on 

 buds. Overwinters in egg stage. 



Distribution: Europe. 



Henschel, G. a. 0. Die Schadlichen Forst- und Obstbaum-Insekten, 1895, p. 418. 

 MoNTiLLOT, L. Les Insectea Nuisibles, 1891, p. 176. 



Hoplocampa f ulvicornls Panzer. 

 (Plum Fruit Sawfly. Tenthredinidse ; Hymenoptera.) 



Host: Plum. 



Injury: Frequently causes considerable damage. Attacks fruit and eats out 

 interior. Causes fruit to fall. 



Description and biology: Adult, wing expanse less than 8 mm.; color black, with 

 yellow, yellowish-red or reddish-brown legs. Pupates in soil in brownish cocoon. 

 Larva, length 12 mm.; creamy-white, sometimes slightly pinkish; head brown; 

 caudal end somewhat attenuated and slightly curved. Eggs minute, greenish white 

 and transparent; placed in unopened blossom; hatch in a few days. (See text, 

 fig. 84.) 



Distribution: England, Europe. 



Theobald, F. V. Insect Pests of Fruit, 1909, p. 376. 



ProphOTUS padi Linnaeus. 

 (Plum Leaf Sawfly. Tenthredinidse; Hymenoptera.) 



Hosts: Plum, pear, hawthorn, bramble, mountain ash, birch. 



Injury: Important. Defoliation. 



Desmption and biology: Adult, female, color mainly black; thorax shiny, covered 

 with grayish brown and two dull white spots; abdomen with scattered, pale, very 

 fine hairs; legs white, except middle of femora, apex of tibia and posterior tarsus, 

 27812—18 12 



