503 

 Index 



hymenaea, 136 

 Parabezzia, 425 

 Paracapnia, 159, 160 

 Parachironomus, 423 

 Paracloeodes, 99, 101, 104 



abditis, 104 



portoricensis, 104 

 Paraclunio, 408, 410, 412, 416 



alaskensis, 416 



trilobatus, 416 

 Paracoenia, 466 

 key to species: adults, 473 



bisetosa, 473 



platypelta, 473 

 Paracymus, 336, 338, 340, 341 

 key to species: adults, 344 



elegans, 344 



ellipsis, 344 



subcupreus, 344 

 Paradelphomyia, 378, 379, 381 

 Paradixa, 401 

 Paragnetina, 160, 163 

 Paraleptophlebia, 92 

 key to species: male adults, 92; sum- 

 mary of characters: nymphs, 94 



associata, 92, 94 



cachea, 92, 94 



californica, 92, 94 



clara, 93 



debilis, 92, 94 



gregalis, 93, 94 



helena 92, 94 



pallipes, 92, 94 



placeri, 92, 94 



quisquilia, 93, 94 



zayante, 92, 94 

 Paraleuctra, 168, 169 

 Paralimna, 465 

 key to species: 470 



aequalis, 470 



decipiens, 470 



multipunctata, 470 

 Parameletus, 89, 90 

 Paranemoura, 165, 167 

 Paraperla, 159, 162, 177 



frontalis, 177 

 Paraperlinae, 159, 162, 177 

 Paraphrosylus, 454 

 Parapoynx, 271, 274, 277 



species: 282, 287 

 Parapsyche, 250, 251 

 key to species: males, 252 



almota, 252 



elsis, 252 



extensa, 252 



spinata, 252 

 Parargyractis, 271, 277, 291 



bifascialis, 284 



cappsi, 284 



daemonalis, 284 



fulicalis, 286 



jaliscalis, 280, 282, 284, 285 



kearfottalis, 277, 281, 282, 284 



longipennis, 283 



opulentalis, 286 



schaefferalis, 277, 282, 283 



truckeealis, 280, 282, 285, 291 

 Parascatella, 466 

 key to species: adults, 474 



marinensis, 474 



melanderi, 474 



triseta, 474 

 Parasimulium, 403 



furcatum, 403 

 Paratendipes, 409, 411, 412, 420 



albimanus, 421 

 Parathyroglossa, 464, 466 



ordinata, 4 66 

 Paratissa, 4 65 

 Parthina, 263 



linea, 263 

 Parydra, 4 65, 470 

 key to species: 4 70 



aldrichi, 471 



appendiculata, 471 



aurata, 471 



bituberculata nitida, 471 



boreal is, 471 



breviceps vicina, 471 



halteralis, 471 



incommoda, 471 



paullula, 471 



pusilla, 470 



socia, 471 



tibialis, 471 



varia, 471 

 Parydrinae, 462, 464, 470 

 Parydrini, 465, 470 

 Patasson, 290 



gerrisophaga, 213, 291 

 Pedicia, 378, 379, 381 



actaeon (ex seq.) 383 



ampla truncata 



aperta 



bidentifera 



obtusa 



parvicellula 



septentrionalis 



simplicistyla 



subaptera 



subobtusa 

 Pedomoecus, 259 

 Pelignellus, 464, 467 



subnudus, 467 

 Pelina, 465 

 key to species: adults, 471 



canadensis, 472 



compar, 472 



truncatula, 472 

 Pelobius, 292 

 Pelocoris, 185, 201, 202 



shoshone, 202 

 Pelonomus, 355, 356 

 Pelopia, 408, 410, 411 



punctipennis, 414 

 Pelopiinae, 407, 410, 411, 412 

 Pelosoma, 339 

 Peltodytes, 303, 304 

 key to species: adults, 304 



callosus, 304 



simplex, 304 

 Peltoperla, 157, 160, 164 

 key to subgenera and species: adults, 

 163 



brevis, 163, 164 



cora, 164 



mariana, 164 



nigriscens, 163 



quadrispinula, 164 



thyra, 164 



zipha, 164 

 Peltoperlidae, 157, 160, 163 

 Pemelus, 339 

 Pentacora, 225 



signoreti, 225, 226 

 Pentagenia, 82, 84 

 Pentaneura, 408, 410, 411 



carnea, 414 



flavifrons, 414 



monilis, 414 



pilosellus, 414 

 Pentapedilum, 421 

 Pericoma, 387 



bipunctata, 388 



californica, 388 



truncata, 388 

 Perithemis, 124, 125 

 Perla, 174 



obscura, 171 



venosa, 174 

 Perlesta, 159, 160, 163 

 Perlidae, 159, 161, 180 

 Perlinae, 159, 180 

 Perlinella, 160, 163 

 Perlinodes, 173 

 Perlodidae, 159, 161, 173 

 Perlodinae, 159, 175 

 Perlomyia, 158, 160, 168 



collaris, 168 



sobrina, 168 



solitaria, 168 

 Petaluridae, 107, 109, 110 

 key to genera: adults, 112; naiads, 

 112 

 Petroleum fly, 468 

 Phaenonotum, 295, 339 

 Phaenopsectra, 422 

 Phalacrocera, 378, 379, 381 

 Phalaenidae, 271 

 Phanocerus, 358, 359, 360 



clavicornis, 361 

 Phaonia, 481 



caerulescens, 481 



caesia, 481 



errans, 481 



errons proxima, 481 



fuscicauda, 481 



limbinervis, 481 



mirabilis, 481 



nigricauda, 481 



pallida, 481 



parviceps, 481 



quieta, 481 



varipes, 481 

 Phaoniinae, 481 

 Pherbellia, 476 

 Philolutra, 459 



Philopotamidae, 237, 241, 242, 247 

 key to genera: larvae, adults, 247 

 Philorus, 389 



ancillus, 389 



aylmeri, 389 



cheaini, 389 



markii, 389 



sequoiarum, 389 



yosemite, 389 

 Philotelma, 466 

 Philygria, 465 

 key to species: adults, 469 



debilis, 469 



nigrescens, 469 



opposita, 469 

 Philygriini, 469 

 Phlebotomus, 386, 387 

 Phoridae, 374, 376 

 Photoelectric cell, 64 

 Phryganea, 256, 257 



californica, 257 

 Phryganeidae, 241, 242, 255 

 key to genera: males, 256; larvae, 

 256 

 Phycoetes, 370 



testaceus, 370 

 Phyllocycla, 114 

 Phyllodromia, 457 

 Phyllolabis, 378 



claviger (et seq.) 383 



encausta 



flavida 



hirtiloba 



meridionalis 



