64 PRINCIPAL CACTUS INSECTS OF UNITED STATES. 



Page. 



Drosophila ampelophila, enemy of cactus insect (Dactylopius confusus) 47 



punctulata, enemy of cactus insect (Dactylopius confusus) 46 



quinaria, bibliographic reference. 54 



Dyotopasta yumaella, an injurious cactus insect 36, 45 



Echinocereus, flowers frequented by Dialictus occidentalis 50 



food plant of aphis 53 



Echinocereus sp., flowers frequented by Ashmeadiella echinocerei 50 



spp., food plants of Sixeonotus luteiceps 41 



Echinocactus ottonis, food plant of Diaspis echinocacti 42 



setipennis, food plant of Gerstseckeria bifasciata 43 



sp. , food plant of Diaspis echinocacti cacti 42 



tenuispinus, food plant of Diaspis echinocacti 42 



wislizeni, flowers frequented by Augochlora neglectula 50 



Lithurgus echinocacti : . 50 



Eiphosoma texana, parasite of cactus insect ( Mimorista fiavidissimalis) 22, 46 



Eleodes armata incidentally associated w ith cactus 52 



carbonaria incidentally associated with cactus 52 



var. soror incidentally associated with cactus 52 



texana incidentally associated with cactus 51 



tricostata incidentally associated with cactus 51 



ventricosa incidentally associated with cactus 52 



Emmenastuc texanus incidentally associated with cactus 51 



Ephistem us cactophilus, scavenger in cactus 47 



Epicauta trichrus frequenting flowers of cactus 49 



Epiplatea scutellata incidentally associated with cactus 53 



Epricromyia fioridensis incidentally associated with cactus 53 



Erchomus convexus, scavenger in cactus 47 



punctipennis, scavenger in cactus 47 



Eriococcus coccineus, an injurious cactus insect 25, 41 



Eucsela sp. incidentally associated with cactus 53 



Eucera unicornis. (See Diadasia unicornis.) 



Euglossa surinamensis incidentally associated with cactus 53 



Eumicrus lucanus, scavenger in cactus 47 



Euphoria kernii frequenting flowers of cactus 32, 49 



Eupogonius vestitus frequenting flowers of cactus 49 



Eurymetopon muricatulum incidentally associated with cactus 51 



Eurytoma sp., parasite of cactus insects 46 



Exochomus latiusculus, enemy of cactus insect (Dactylopius confusus) 24, 45 



marginipennis, enemy of cactus insect (Dactylopius confusus) 24, 45 



Falagria sp., scavenger in cactus 47 



"Fly, droop-winged." (See Stictomyia longicornis .) 



Forelius maccoohi incidentally associated with cactus 53 



Formica subpolita attending aphis on Echinocereus 53 



incidentally associated with cactus 53 



Fungous disease. (See Perisporium sp.) 



Gamasidse taken from pulp of Cereus giganteus 53 



Gasoline torch against Chelinidea vittigera 20 



Melitara junctolineclla 28 



Mimorista fiavidissimalis 22 



Narnia pallidicornis 34 



Stylopidea picta 23 



Gerstseckeria, systematic treatment of genus, bibliographic reference 57 



Gerstseckeria alternata, bibliographic reference 57 



basalis in ] ist of injurious cactus insects 43 



