BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 39 
278. Comstock, J. JET. The army worm. <New York Herald, 14 June, 
1880. 
Report on investigations concerning Leucania unipuncta in Kent County, Del., 
in J one, 1880. 
279. Comstock, J. II. The army worm. <Cineiimati Grange Bull., 
15 July, 1880. 
Report on the Delaware invasion of 1880 of Leucania unipuncta. 
280 Comstock, J. II. Beport of the Entomologist. <Ann. Kept. [U. 
S.] Commissioner Agric. for 1879 [ 18 October, 1880], pp. 185- 
34S, 10 pi. 
CONTEXTS. 
Letter of submittal. 185 
Army worm, Leucania unipuncta, descriptive, 187; number of genera¬ 
tions, 188; hibernation, 188; remedies, 189; parasites, 190. 
Destructive leaf hopper, Cicadula exitiosa . 191 
Clover-seed midge, Cecidomyia leguminicola, its natural history, 193; dis¬ 
tribution, 194; food plants, 194; eggs, 194; larvae, 194; pupa, 194; 
imago, 195; number of broods, 195; remedies, 195; parasites, 196. 
Clover-leaf midge, Cecidomyia trifolii . 197 
Clover-stem borer, Languria mozardi .. 199 
Clover Oscinis, Oscinis trifolii ... 200 
Mallow Oscinis, Oscinis malvce .. 201 
Insects injurious to orange trees. 202 
Cotton stainer, Dgsdercus suturellus , on orange. 203 
Orange-leaf Nothris, Nothris citrifoliclla . 205 
Orange case-bearing Tiueid, Coleotechuiles cilriella . 206 
Rlastobasis citricolella . 206 
Orange-leaf notclier, Artipus floridanus . 207 
White ants, or wood lice, Tennes Jlacipcs . 207 
Two new parasites on orange insects, Trioxys testaceipes, Polysphincta 
albipes . 208 
Palmetto-leaf miner, Laverna sabalella . 209 
Resplendent shield bearer, Aspidisca splendoriferella, habits, 210; food 
plants, 212; enemies, 212; remedies, 212. 
Grapevine tlea-beetle, Haltica chalybea, early stages, 214; means against, 
215. 
Asparagus beetle, Crioceris asparagi . 217 
Melon worm, Phakellura hyalinaialis [=Eudioptis hyalin at a] . 218 
Japan lily Aphis, Siphonophora lilii . 220 
Hawthorn Tiugis, Corythuca arcuaia . 221 
Locust sawfly, Nematus similaris . 222 
Lesser locust-leaf Gelechia, Gelechia robinkefoliella . 224 
White blotch oak leaf-miner, Lithocollelis hamudryadclla, habits and 
natural history, 226; larvae, 226; cocoon, 228; chrysalis,228; imago, 
229; hibernation, 229; remedy, 230. 
Fitch’s oak leaf-miner, Lithocolletis fitchella . 231 
Rctinia comstockiana, 233; Ephialtes comstockii, 235. 
Frustrating Retinia, Retiniafrustrana .. 236 
Pitch pine Retinia, Retinia rigidana, 237; Cremaslus rctinia 238. 
Pine leaf-miner, Gelechia pinifoliella . 238 
Predaceous lepidopterous insects. 241 
Coceid eating Dakruma, Dakruma [ =Lcetilia ] coccidivora . 241 
Pale Dakruma, Dakruma pallida . 243 
