Index 



Parabolocratus viridis, 248. 

 Paraceramius, 375, 388, 390, 394, 395; 

 species of, 396. 

 lusitanicus, 377, 395. 

 Paragia, 370, 375, 377, 390-393; Hst 

 of species of, 392; key to, 393. 

 pictifrons, 393. 

 Paragiini, svnoptic table to genera 



of tribe" of, 388. 

 Paraleptomastix, 365. 

 abnormis, 364. 

 dactylopii, 365. 

 histrio, 365. 

 Paramasaris, 386 



fuscipennis, 386-387. 

 Paraproba haniata, 241. 

 Parthenicus picicollis, 226. 

 Parydra appendiculata, 161. 

 aurata, 154-155. 

 bituberculata, 154. 

 Pasania densiflora (tanbark oak), 

 host for Myzocallis pasaniae, 

 324. 

 Peach, host for Myzus_ varians, 335, 

 and for Aphis persicae-niger, 

 341. 

 Pear, host for Aphis pomi, 341. 

 Pemphigus betae, beet louse, 263. 



populitrans versus, 343-344. 

 Pentalonia nigronervosa, 335. 

 Pentstemon speetabilis, host for Eho- 

 palosiphum, 331, and for Myzus 

 circumflexum, 335. 

 Perlidae, venation in wings of, 104- 



105. 

 Phlepsius occidentalis, 249. 



ovatus, 249. 

 Phorodon humuli (hop aphis), 253, 



263, 267, 330. 

 Photinia arbutifolia (mountain holly), 



host for Ehopalosiphum, 330. 

 Phryganeidae, 110-111. 

 Phthanocorus, 111. 

 Phylaria, 200, 201. 

 Phyllaphis fagi, 321. 

 querei, 321 

 quercifoliae, 321. 

 Physopoda, 125-126. 

 Phytocoris eximius, 235. 



inops, 235. 

 Phytophthires, 124-125. 

 Picea excelsa (Norway spruce), host 



for Myzaphis, 342. 

 Pieris, 26. 

 Pinus ponderosa (yellow pine), host 



for Lachnus pini-radiatae, 327. 

 Pittosphorum eugenioides, 332, 341. 

 tenuifolium, 341. 



tobira, host for Macrosiphum solani- 

 folii, 329, and for Rhopalosiphum 

 persicae, 331. 

 undulatum, 332. 

 Plagiognathus, 224, 243. 



Platylygus luridus, 237. 

 Platypteridae, Paleozoic insect fos- 

 sils, venation in wings of, 104. 

 Platytylellus intercidenda, 235. 

 Plesiozethus, 385, 386. 



flavolineatus, 386. 

 Ploiariodes, 234. 

 Poeciloscytus uhleri, 235. 



venaticus, 235. 

 Pontia rapae, white butterfly, 23, 27. 

 Poplar, host for Pemphigus, 344, 345. 

 Potamogeton natans (pondweed), 

 host for Ehopalosiphum nym- 

 phaeae, 331. 

 Primula (cowslip), host for Amphora- 



phora latysiphon, 329. 

 Propteticus, 102. 



Protephemeridae, ancient insect fam- 

 ily, venation in wings of, 97-98. 

 Protodonata, ancient insect group, 



venation in wings of, 90-92. 

 Protoperla, venation in wings of, 



104. 

 Prune, host for Hyalopterus arund- 



inis, 336. 

 Psallus, 243. 

 Pseudococcobius, 355. 

 clauseni, 358-360. 

 ehrhorni, 355, 356, 362. 

 fumipennis, 355, 356—358. 

 terryi, 355, 356, 357. 

 Pseudococcus, study of, by C. P. 

 Clausen, 347; Tanaomastix para- 

 sitic in, 365, 367. 

 citri, 367. 

 crawii, 349. 

 lyani, 362. 

 solani, 358. 

 timberlakei, 355. 

 yerbasantae, 351. 

 Pseudomasaris, 370, 371, 372, 375, 

 389, 397, 398, 399, 401, 403, 406- 

 411; keys to genera and species 

 of, 407-411. 

 albifrons, 416. 

 bariscipus, 409, 418^19. 

 basirufus, 411, 421-422. 

 coquilletti, 409, 411, 428-429. 

 edwardsii, 431^32. 

 maculifrons, 411, 420-421. 

 marginalis, 409, 410, 424-426. 

 occidentalis, 409, 410, 423-^24. 

 phaceliae, 409, 410, 419-^20. 

 rohweri, 409, 417-118. 

 texanus, 399, 409, 410, 414-415, 



416, 419. 

 vespoides, 412. 

 zonalis, 409, 411, 426-428. 

 Pseudopsallus, 224. 

 angularis, 224-225. 

 verticalis, 225. 

 Psiloglossa simplicipes, identity with 

 Euparagia, 384. 



[470] 



