62 PRINCIPAL CACTUS INSECTS OF UNITED STATES. 



Page. 



Chelinidea vittigera, egg, description 18 



hibernation 19 



injury, nature 16-17 



life history 1S-19 



nymphal stages, description 18-19 



variations 17 



Chelonus laticinctus, parasite of cactus insect ( Melitara dentata) 28, 46 



Chilocorus cacti, enemy of cactus insect (Dactylopius confusus) 24, 46 



Chlorops quinquepunctata incidentally associated with cactus 53 



Chorizagrotis soror, an injurious cactus insect L5, 44 



Chrysis sp. frequenting flowers of cactus 49 



Chrysomela auripennis frequenting flowers of cactus 49 



Cnemodus mavortius incidentally associated with cactus 51 



Coccidae attacking roots and stems of cactus 15 



Coccus (see also Dactylopius) . 



Coccus cacti, bibliographic reference 55 



confusum, bibliographic reference 55 



Cochineal, early history of industry 23, 24 



former extent of industry 9 



insect (see also Dactylopius coccus). 



exports from Canary Islands 9 



not a native of the United States 23 



cottony. (See Dactylopius confusus.) 



Cainopceus palmeri, bibliographic reference ."> 1 



Colaspoides macrocephalus frequenting flowers of cactus 49 



Coleocerus marmoratus incidentally associated with cactus 52 



Compsomeris 4-notata incidentally associated with cactus 53 



Compsus auricephalus incidentally associated with cactus 52 



Copestylum marginatum , an injurious cactus insect 37 



bibliographic references 54, 55 



Maseochara valida reared from puparium 47 



scavenger in cactus 48 



Cornifrons elautalis, an injurious cactus insect 35, 44 



Corythuca deccns in list of injurious cactus insects 41 



Cossonus hubbardi incidentally associated with cactus 52 



Cremastogaster lineolata incidentally associated with cactus 52 



sp., attendant on aphis on Opuntia versicolor and puntia/ulgida . 52 



incidentally associated with cactus 52 



Cutworm. (See Chorizagrotis soror.) 



Cycloneda munda, enemy of cactus insect (Dactylopius confusus) 24, 46 



Cynxus angustus incidentally associated with cactus 52 



( 'ypliomyia schaejferi, scavenger in cactus 48 



Dactylopius (Coccus), near confusus, in list of injurious cactus insects 42 



spp. in list of injurious cactus insects 42 



coccus (see also Cochineal insect). 



in list- of injurious cactus insects 42 



confusus, an injurious cactus insect 13, 23-25, 42 



control 24-25 



enemies 24 



prey of Chilocorus cacti 46 



Cycloneda munda . . -!(> 



Drosophila ampelophila 47 



punctulata 46 



