666 
Dicerca—Continued 
tenebrica, 195 
tenebrosa, 195 
tuberculata, 195 
Dichaetoneura leucoptera, 
apy 
Dichelonya— 
albicollis, 172 
characteristics, 172-173 
elongata, 172 
Dichomeris— 
ligulella, 460 
marginella, 460 
Dicranomyia, 525 
Dineura americana. 
Hemichroa crocea. 
Dinoderus minutus, 226 
Diodyrhynchus, 292 
Diogmites, 5384 
Dioryctria— 
abietella, 451-452 
amatella, 452 
reniculella, 451 
cimmermani, 452-453 
Diplopoda, 60-61 
Diplotaris— 
feeding habits, 171 
haydeni, 173 
importance of, 161-162 
liberta, 173 
sordida, 173 
Diprion— 
frutetorum, 552, 
559 
hercyniae, 544, 559-562, 
611, 615, 616 
pini, 611 
polytomum. See Diprion 
hercyniae 
simile, 544, 557, 558, 611 
Diprionidae, 550—562 
Diptera— 
annoying to 
526-529 
blood-sucking, 526 
characteristics, 505-508 
families and_ species, 
509-541 
fungivorous, 536-541 
inquilines, in galls of, 
600 
keys to families, 
526, 530, 533-534 
parasites of, 609, 611, 
612, 614 
parasitic, 17, 530-533 
phytophagus, 508-526 
predaceous, 5838-536 
predators of, 632 
scavengers, 536-541 
Dircaea quadrimaculata, 
214 
Dirhagus pectinatus, 186 
Diseases— 
chestnut bark, 211 
Dutch elm, 11, 288, 308, 
323-324, 341 
See 
DOT 
man, 79, 
508, 
INDEX 
Diseases—Continued 
INSCCEGaelissmlonealuie: 
411, 414 
tree, 10-11 
wilt, 18, 411 
Disholcaspis eldoradensis, 
597 
Distenia, 230 
Dolichopedidae, 533, 535 
Dolichopus vittatus, 585 
Dorcatoma, 225 
Dorcus paralleus, 170 
Dorilaidae, 507, 580, 5381 
Dorytomus subsimilis, 290 
Dragonflies, 78, 84-85 
Drapetes— 
geminatus, 186 
nigra, 535 
Drasteria, 394 
Drepanaphis  acerifoliae, 
129 
Drepanosiphum platanoi- 
des, 129 
Dromaeolus striatus, 186 
Drosophila— 
dimidiata, 539 
melanogaster, 539 
Drosophiladae, 507, 5388— 
539 
Drought, 8, 12, 18 
Dryinidae, 631-632 
Dryocoetes— 
affaber, 336 
americanus, 3386 
betulae, 294, 298, 336 
characteristics, 326, 333, 
336 
liquidambarus, 336 
piceae, 336 
Dryophanta. See Callirhy- 
tis. 
Dryophthorus americanus, 
293 
Dusting, 23, 51-57 
Dynastes tityus, 183 
Dynastinae, 182-1838 
Eacles imperialis, 384-3885 
Hburia— 
characteristics, 230, 245 
quadrigeminata, 245 
Eccoptogaster piceae, 535 
Hedytolopha— 
control, 32 
insiticiana, 474-475 
Hetoedemia— 
castaneae, 502, 504 
heinrichi, 502 
phleophaga, 502 
populella, 502, 503 
Hetropis crepuscularia, 
430 
Hlaphidion— 
incertum, 246 
mucronatum, 246 
See also Aneflomorpha, 
Hlasmopalpus lignosellus, 
04, 454, 455 
Elater— 
characteristics, 185-186 
rubricollis, 207 
Elateridae, 185-186 
Ellopia— 
somniaria, 621 
See also Lambdina. 
Emphytus cinctipes. See 
Allantus cinctus. 
Hmpididae, 533, 535 
Empoasca, 120, 632 
EHneyclops— 
caerluens, 247 
feeding habits, 229 
Encyrtidae, 613-614 
Endothia, 211 
Ennearthron, 197 
Hnnomos subsignarius, 
431, 484 
Enoclerus— 
ichneumoneus, 201 
lunatus, 201 
quadriguttatus, 198, 201, 
322-323 
quadrisignatus, 201 
Entomopthora— 
aphrophora, 123 
aulicae, 414 
Epargyreus tityrus. 
Proteides clarus. 
Ephemeroptera, 78, 83-84 
Hphialtes— 
conquisitor, 603 
montana, 603 
EHpicauta— 
marginata, 206 
vittata, 206 
Hpicnaptera 
419-420 
Epilachna varivestis, 209 
Hpimecis virginaria, 430, 
431 
Epinotia— 
aceriella, 473 
nanana, 345, 457, 458, 
459, 471-473, 614 
Epipaschiidae, 348, 446— 
448 
Episimus argutanus, 471 
Epizeuxis 
aemula, 395-396 
americalis, 396 
Hpuraea, 209 
Erannis tiliaria, 481, 482 
Jrineosinus SQUAMOSUS, 
298 
Brinna— 
abdominalis, 536 
lugen, 506, 5386 
Hriophyidae, 64 
Briosoma— 
americanum, 129-130 
lanigerum, 129-130 
rileyi, 129-130 
Briosomatini, 129-130 
Brnobius— 
alutaceus, 
See 
americana, 
Nor 
dai bt) 
