58 PARASITES OF THE COTTON BOLL WEEVIL. 



Page. 



Determinate growth, factor in control of boll weevil 3 



Dinotus ^p., parasite of Magdalis a ru sa m 43 



Dryness and sunlight favorable to parasitism of boll weevil 22 



ides autographus, host of Spathius canadensis 44 



Empusa (Entomophthora) sphserosperma, fungous disease of Phytonomus punc- 



tatus 41 



Entedon lithocolletidis, parasite of Anthonomus nigrinus 43 



Entomophthora phytonomi, fungous enemy of Phytonomus punctata* 41 



sphserosperma. (See Empusa [Entomophthora] sphu rosperma.) 



Epicxrusimbricatus. host of Sporotrichum globuliferum 41 



Eupelm us cyaniceps= Cerambycobius cyaniceps 11 



Eurytoma. localization 49 



magdalidis, parasite of Magdalis armicollis 42 



species parasitic on boll weevil 11 



tylodermatis, accidental parasite of Bracon mellitor 28, 34, 35-36 



biological notes 34 



center of activity as boll weevil parasite 9 



geographical and seasonal distribution , 31-32 



hosts, list 42 



hyperparasite of boll weevil 28, 34, 35-36 



localization 49 



occurrence 29, 30 



parasite of Anthonomus disjunctus 46 



squamosus 46 



Apion segnipes 42 



boll weevil 11.27 



bud, flower, pod, and stem weevils 48 



Lixus scrobicollis 25. 26. 27. 45 



Orthoris crotchii 47 



Tyloderma foveolatum 47 



rotation of hosts 49 



Examination work on parasites of boll weevil 11-22 



Formica fusca subpolita perpilosa, enemy of boll weevil 28 



Fungous enemies of boll weevil. (See Aspergillus sp. and Cordyccps sp.) 



Epicxrus imbricatus. (See Sporotrichum globuliferum.) 

 Phytonomus punctatus. (See Empusa [Entomophthora] 

 sphserosperma and Entomophthora phytonomi.) 



Galpinsia hartwegi, food plant of Auletes tenuipes 47 



Geographical considerations governing parasitism of boll weevil 18-19 



Glyptomorpha lixi, parasite of Lixus scrobicollis 44 



mavaritus, parasite of Lixus scrobicollis 44 



novitus, parasite of Lixus musculus 44 



rugator, parasite of Lixus concavus and L. musculus 44 



Grapevine, food plant of Ampeloglypter sesostris 47 



Grindelia squarrosa, food plant of Anthonom us squamosus 4<> 



nuda, food plant of Anthonomus squamosus 34-39 



Heat and dryness, factor in control of boll weevil 3 



Ilelianthus, occurrence with reference to that of Eurytoma tylodermatis 49 



/A U rotheca subaxillaris, food plant of Anthono rutins 34. 37, 46 



occurrence with reference to that of Cerambycobius. . . 49 



Hibernation of boll weevil parasites in bolls 12 



llicb >ry . food plant of Conotrachelus affinis 10 



nut weevil. (See Conotrachelus affinis.) 



