68 PRINCIPAL CACTUS INSECTS OF UNITED STATES. 



Page. 



Namia femorata , an injurious cactus insect 34, 41 



bibliographic reference 55 



distribution 34 



inornata, an injurious cactus insect 34, 41 



pallidicornis, an injurious cactus insecl 32-33, 41 



bibliographic reference 55 



descriptive 33 



egg, descriptive 33 



nymphal stages, descriptive 33 



snowi, an injurious cactus insect 34, 41 



Nausigaster unimaeulata, scavenger in cactus 48 



Neoponera villosa incidentally associated with cactus 52 



Nerius flavifrons, scavenger in cactus 49 



Nodonota tristis frequenting flowers of cactus 49 



Noserus emarginatus incidentally associated with cactus 51 



Notogramma stigma incidentally associated with cactus 53 



Nysius angustatus =Nysius ericse. 51 



incidentally associated with cactus 51 



Odontomachus clarus (?) incidentally associated with cactus 52 



Odynerus clusinus incidentally associated with cactus 53 



Oligota sp. , scavenger in cactus 47 



Omalium cacti, scavenger in cactus 47 



Oncerometopus nigriclavus in list of injurious cactus inserts 40 



Onychobaris mystica in list of injurious cactus insects 44 



Opuntia (see also Cactus). 



insects injurious thereto, in order of importance 13 



Opuntia arborescens, Camponotus maculatus vicinus var. nitidvtfentris thereon. . . 53 



flowers frequented by Diadasia australis 50 



rinconis 50 



Lithurgus apicalis opuntise 50 



food plant of Diaspis cacti 42 



echinocacti cacti 42 



opvntix 42 



Disonycha varicorn is 22 



Largus succinctus 40 



Myrmecocystus melliger taken thereon . . .? 53 



probable food plant of Melitarafemaldiaiis 29 



arbuscula, food plant of Chelinidea sp 20 



banburjana, food plant of Cecidomyia opuntise 45 



bernardina, bibliographic reference 54 



food plant of Camopceus palmer i 43 



cycloides, food plant of Pseudococcus sp 42 



elongata, food plant of Diaspis echinocacti opuntim 42 



engelmanni, bibliographic references 54. 55, 56 



flowers frequented by Diadasia australis rinconis 50 



Megachile sidalcese 50 



food plant of aphis 53 



Copestylum marginatum 47 



Diaspis cadi 42 



echinocacti cacti 42 



Gerstxckeria m foilis 43 



1 [y porhagus texanus found t herein 48 



probable food plant of Melitarafemaldiaiis 29 



