INSECTS OF CELERY, CHEREY, AND CHESTNUT. 53 



Description and biology: Fly brownisli yellow, scutellum dark, hind part of thorax 

 and abdomen shining black; head and antennae reddish yellow; length 5-6.5 mm. 

 Maggot whitish. Pupates either in the leaf or in the soil (winter). 



Distribution: Europe. 

 SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, pp. 420, 421. 



B. OTHER IMPORTANT CELERY PESTS. 



LEPIDOPTERA. 

 Pyralldse. 



^Pionea forfiealis Liimseus and ^P.ferTugalis Hiibner; Europe. (See Cabbage.) 



DIPTERA. 

 Agromyzidae. 



^Phytomyza afflnis Fallen. (See Tobacco.) 



CHERRY. 



(See Plum.) 



CHESTNUT. 



(Castaneaap^. Family CupuUferse.) 



Deciduous trees and shrubs of America, Europe, Asia, and North Africa, producing 

 edible nuts. The coarse-grained wood is much used for furniture, railway ties, and 

 fence posts, as it is very durable in the soil. 



A. BETTER KNOWN CHESTNUT INSECTS LIKELY TO BE IMPORTED. 



Ctircullo elephas Gyll. (Balanlnus). 



(Chestnut Weevil. Curculionidse; Coleoptera.) 

 Host: Chestnut. 



Injury: To chestnut fruit. Not easy to introduce. 



Description and biology. — Adult length 6-7.5 mm. A long egg-shaped beetle, red- 

 dish yellow brown and covered with whitish scales. Pupates in ground. Larva feeds 

 in fruit of chestnut. Eggs placed by female in nut. 



Distribution: Eiu-ope. 

 Henschel, G. a. 0. Die Schadlichen Forst- und Obstbaum-Insekten, 1895, p. 91. 

 Laspeyresia splendana Hiibner. (Carpocapsa.) 

 (Nut Fruit Tortrix. Tortricidse; Lepidoptera.) 



Hosts: Chestnut; walnut; acorns. 



Injury: Attacks the nuts, often quite destructive. 



Description and biology. — Adult wing expanse 12-18 mm.; forewings whitish gray; 

 basal patch gray, streaks of gray along costa; a large blackish brown area inclosing a 

 silver-edged ocellated patch, in which are three or four black, longitudinal lines. 

 Occurs in June and July. Pupation similar to that of codling moth. Larva, pinkish 

 white; leaves fruit late in fall. Eggs deposited on young fruit, hatching in 10 days. 

 (See text fig. 30.) 



Distribution: Europe. 

 Theobald, F. V. Insect Pests of Fruit, 1909, p. 309. 



B. IMPORTANT CHESTNUT INSECTS. 



HEMIPTEEA. 

 Coccidae. 



Unarmored. 



Lecaniuw pulchrum King; Germany, France. 



COLEOPTERA. 

 Anobiidse. 



Xestobium Tufovillosum DeGeer; Europe; bores in wood. 



Bostrychidse. 



Bostrychus capucinus Linnaeus; Europe; bores in lumber and barrel staves. 



