Index 



Damsel-fly, nymph of, *84 ; 



ruby-spot, *oo 

 Dance-flies, 332, 334 

 Dance-fly, mouth-parts of, 

 *335 ; venation of wing 

 of, *335 

 Darkling ground-beetles, 



288 



Dasyllis sacrator, +331 

 Datana angusii, 394; min- 



istra, 393 



Datura stramonium, spe- 

 cialization of, for insect 

 pollination, 571 

 Daunus swallowtail, 449 

 Dead-leaf butterfly, *6oi 

 Death's-head sphinx-moth, 



* 43 8, *6i 3 

 Death-watch, 271 ; beetles, 



265 



Deer-flies, 328 

 Degeneration, among 



scale-insects, 180, 188 

 Deilephila lineata, 435 

 Dejeania corpulenta, *346 

 Dendroctonus valens, 299 

 Dendroleon, 232 

 Dermatobia cyaniventris, 



339; noxialis, 339 

 Dermcstes lardarius, *264 

 Dermestidae, Dermestes 

 (depua, derma, skin; 

 iaQieiv, esthien, eat), 258, 

 263 



Desmia maculalis, 378 

 Desmocerus palliatus, 284 

 Development, 35 ; of bee- 

 tles, 250; of color-pat- 

 tern in giant wood-bor- 

 ing beetle, *598 ; of color- 

 pattern in pupal wings of 

 monarch butterfly, *596; 

 of color-pattern in pupal 

 wings of promethea 

 moth, *597; of egg of 

 fish-moth, *4o; of egg 

 of saw-fly, *39; of egg 

 of water scavenger-bee- 

 tle, *38 ; of honey-bee, 

 522; of malaria-produc- 

 ing Haemamceba in hu- 

 m a n blood-corpuscle, 

 *6i8 ; post-embryonic, of 

 locust, *42 ; of scales on 

 wing of Anosia plexip- 

 PUS, *595 ; of scales on 

 wing of Euvanessa anti- 

 opa, *594 ; of wing-buds 



of giant crane-fly, *48; 



of wings of locust, *42 

 Devil's darning-needle, 76 

 Dexia, 346 

 Dexiinae, 341, 346 

 Diabrotica 12-punctata, 



279 ; longicornis, 279 ; 



soror, 279, *28o; vittata, 



279 

 Diapheromera femorata, 



*i3i, 132, *6o3 

 Diaspis rosce, ^190 

 Diastrophus nebulosus, 



473 



Dicerca divaricata, 267 

 Dichelia sulfur eana, *38o 

 Dicromorpha viridis, *I4I 

 Dictyopteryx, 73 

 Diedrocephala mollipes, 



170 

 Diestrarumena marmorata, 



*i55 

 Differential locust, *I37, 



141 

 Digestive epithelium, cells 



of, of crane-fly, *I7 

 Digger-wasps, 463 

 Dimorphic, 469 

 Dineutes emarginata, *257 

 Diopsidae, Diopsis (&, di, 



two; oY^r opsis, eyes), 



347 



Dioptidae ( p r o b . &C. 

 dis, twice ; o</'<f, opsis, 

 seen, referring to the 

 two generations per year 

 in some forms), 407 



Diplosis pini-radiata, *324 



Diptera ( <h, di, two ; 

 KTep6v, pterum, wing), 

 56, 301 ; genuina, 303 ; 

 life-history o f , 302 ; 

 mouth-parts of, 302 



Dipterous larvae, histo- 

 blasts or imaginal discs 

 of, 47 



Directive coloration, 607 



Discal area or spot or cell 

 (near center of base of 

 wing) 



Diseases, insects in rela- 

 tion to, 615 



Dissosteira Carolina, *i4i, 

 143 ; brain of, *22 ; ner- 

 vous system of, *22 ; 

 pericardia! membrane of, 

 *i8; respiratory system 

 of, *i8 



Diverse-land geometer, 

 *399 



Dixa-flies, 304 



Dixa sp., *3i9; larva of, 

 *3i8; mouth-parts of, 

 *3i9; pupa of, *3ig; ve- 

 nation of wing of, *32O 



Dixidse, Dixa (prob. fasdf, 

 dixus, double, or rf.-</f, 

 dixis, a showing, dis- 

 play), 304, 319 



Dobson-fly, *226 ; alimen- 

 tary canal of, *i6; head 

 of, showing mouth-parts, 

 *6 



Dobsons, 55 



Doc.ophorus calif orniensis, 

 116; cotnmunis, 116, 

 *I2O, 122; cursor, 116; 

 excisus, 1 16 ; icterodes, 

 116, *H9; lari, 116; per- 

 tusus, 117; platystoy- 

 mus, 116 



Dog- and cat-flea, *354 



Dog-day locusts, 167 



Dog-louse, sucking, *2i7 



Dolichopodid, venation of 

 wing of, *336 



Dolichopodidae, Dolicho- 

 pus (ito^joTTODC, dolicho- 

 pus, with long feet), 332, 

 335 



Dolichopus lobatus, *335 



Dorcus parallclus, 273 



Dorsal (backward, oppo- 

 site of ventral) 



Dorsal vessel, valves of, 

 *i8; of locust, *I7 



Doryphora w-lineata, *27& 



Dorypteryx, 113 



Double-eyed sphinx, *435, 

 437 



Dragon-flies, 53, 75 ; col- 

 lecting nymphs of, 87 ; 

 colors of, 80; distribu- 

 tion of, 78 ; egg-laying 

 of, 82; food of, 81; life- 

 history of, 84; preserv- 

 ing adults, 88 ; rearing 

 nymphs of, 87 ; struc- 

 ture of, 79 ; table for 

 classification, 89 



Dragon-fly, *76 ; circula- 

 tory system of, *\7', 

 giant, stages in develop- 

 ment of, *8;< ; hero, 93 ; 

 nymph of, *76, *77 ; ve- 

 nation of wing of, *89; 



