Index 



6 93 



Triphleps insidiosus, 206 



Tripoxylon albopilosum, 

 502 ; frigidum, 502 ; ru- 

 brocinctum, 502 



Triprocris, 388 



Triungulin, 290 



Trochanter, *247 



Trochilium fraxini, *3Q2 



Tropisms, 63*5, 636 



Tropizaspis sp., *I55, 156 



Tropcca luna, 420, *422 ; 

 cocoons of, *423 



Trox, 275 



Trumpet-galls on leaves of 

 California white oak, 

 *470 



Trypeta longipennis, *34<p; 

 ludens, 350; solidaginis, 

 350 



Trypetidae, Trypeta 

 ( rpinravov, trypanum, a 

 borer), 350 



Tryxalinse, 136, 142 



Tumble-bugs, 273, 274 



Turkey-gnats, 313 



Turnus butterfly, 449 



Tussock-moth, degenerat- 

 ing muscle of, *5O ; de- 

 veloping mouth-parts of, 

 *363; larva of, *405; 

 parallel-lined, 405 



Tussock-moths, 370, 404 



Twig-insect, *6o3 



Two-striped locust, *I38, 

 141 



Typhlocyba rosce, 170 



Udcopsylla robusta, *I54 

 Uloma impressa, 289 

 Ulula hyalina, *2$2 

 Underground nest of Cali- 

 fornia honey-ant, +54 

 Underwings, a group of 



red and yellow, *4OO 

 Utetheisa bella, 413 



Valves of dorsal vessel or 



heart, *i8 

 Vanessa atalanta, 454 ; 



cardui, 454; carya, 454; 



huntera, 454 

 Vedalia cardinalis, 186, 



*i87, 287 



Veins of wings, 10 

 Veliidse, Velia (perhaps 



Velia, a Greek colony in 



Southern Italy), 195, 



198 



Velvet-ants, 497 



Venation, 10 ; of a cossid, 

 *38s ; of dragon-fly wing, 

 *8g; of a Geometrid, 

 *396 ; of monarch but- 

 terfly, *n; of social 

 wing, *II3; of a Pyro- 

 morphid, *389; of a 

 Tortricid, *3&o ; wing 

 o f Anthrax fulviana, 

 *333! of wing of bag- 

 worm moth, *38g; of 

 wing of Bibio albipennis, 

 *326; of wing of black- 

 fly, *3i2; of wing of 

 Chrysophila thoracia, 

 *330; of wing of crane- 

 fly. *32i ; of wing of 

 dance-fly, *335 ; of wing 

 of Dixa sp., *320; of 

 wing of a Dolichopodid, 

 *336 ; of wing of fungus- 

 gnat, *325 ; of wing of 

 Hepialus gracilis, *372; 

 of wing of horse-fly, 

 *328 ; of wing of Lucilia 

 ccesar, *344 ; of wing of 

 Micropteryx sp., *372; 

 of wing of monarch 

 butterfly, *37i ; of wing 

 of net-winged midge, 

 *3I7; of wing of Odon- 

 tomyia, *329 ; of wing of 

 Pyralid moth, *376; of 

 wing of robber- fly, *33i ; 

 of wing of Syrphus con- 

 tinuax, *339 



Ventral (bellyward) 



Ventral plate, 38 



Vertex, 142 



Vespa, 503, 506; crabro, 

 nest of, *504; cuneata, 

 506 ; germanica, 506 ; 

 maculata, 506; sp., *5O5 



Vespidse, Vespa (vespa, a 

 wasp), key to genera of, 

 503 



Vespina (see Vespidae), 

 463 . 



Vespoidea (see Vespidse), 

 464 



Viceroy, 452 ; butterfly 

 mimicking monarch but- 

 terfly, *6io 



Vine-hoppers, *I70 



Vine-loving pomace-fly, 349 



Violet-tip butterfly, 454, 

 *455 



Vitelline membrane, 37 

 Volucella, 340 



Walking-stick, *I3I, 132, 

 *6o3 



Walking-sticks, 126 ; key 

 to genera of, 132 



Walnut-moth, regal, 246, 

 *427 ; larva of, *427 



Warble-flies, 338 



Warning colors, 604 



Wasp, development of 

 mouth-parts of, *4<5o, 

 461 ; mouth-parts o f , 

 *4(5o ; mouth-parts of 

 larva, *46i ; mud-dauber, 

 nest of, *499 



Wasp-flies, 332, 336 



Wasp-like fly, *33<5 



Wasps, 56, 490; carpenter, 

 *5O2; classification of, 

 490; mason, 498; mim- 

 icry of, by moths, *6o8; 

 nest-building by, 508; 

 potter, 498 ; social, 503 ; 

 solitary, 491; solitary, 

 Fabre's experiments on 

 instincts of, 643 ; soli- 

 tary, Peckham's experi- 

 ments on instincts of, 

 650 ; classified by habits, 

 497 ; habits of, 492 ; sting- 

 ing prey, 495 ; structure 

 of, 491 ; true, 463 



Water-beetle, *25. 



Water-boatmen, 194, 198, 

 *I99 



Water-bug, giant, 199, 

 *20o; western, *2oo 



Water-creepers, 199 



Water-net, *639 



Water scavenger - beetle, 

 259; development of egg 

 of, *38; external anat- 

 omy of, *247 



Water-scorpion, 194, *2Oi ; 

 eggs of, *20i 



Water-skater, ocean, *I97 



Water-striders, 195, 196, 

 *I97; broad-bodied, *I97 



Water-tiger, *256 



Wax-making o f honey- 

 bee, 526 



Wax secreted by aphids, 



175 



Webbing clothes-moth, 374 

 Web-worm, fall, 412 

 West-coast lady, 454 



