56 MISCELLANEOUS PAPEES. 



Thripoctenus russelli — Continued. Page. 



description, original 27-28 



distribu tion 48-49 



effect of cold on prepupse of thrips parasitized thereby 31 



effect of oviposition in different ages of host larvae 44 



eggs, number 38-39 



first appearance in spring 47 



flight 40 



generations, number 47 



habits in open 38 



hibernation •. 47-48 



history of discovery 26-27 



host relations 41^3 



last appearance in fall 47 



length of life cycle 46^7 



length of life in confinement 43-44 



length of time from oviposition to first indication of parasitism 45 



length of time from oviposition to pupation of parasite 45 



life cycle, length 46-47 



life history 44-^8 



life-history summary of original host, Heliothrips fasciatus 28 



methods of collecting thrips for evidence of parasitism 28-29 



occurrence 48 



oviposition, effect in different stages of host 38 



oviposition method and period 36-37 



oviposition period, length 38-39 



paper 25-52 



parasitism, double 39 



parasitism, percentage 49-50 



parthenogenesis 35-36 



pupa, description 32 



pupa, formation 31-32 



pupal stage, effect of cold thereon 33 



pupal stage, length 33 



rearing methods for life-history study 29-30 



sexes, relation and proportion 35 



sight 40 



stage of thrips showing parasitism thereby 30 



time between first indication of parasitism and formation of parasite pupae 

 under laboratory conditions 31 



Thrips — 



(See also Thysanoptera.) 



abdominalis in key to species 4 



appearance of prepupae parasitized by Thripoctenus russelli 30 



bean, on Sonchus oleraceus 48 



behavior of those parasitized by Thripoctenus russelli 31 



bremnerii in key to species 4 



double parasitism by Thripoctenus russelli 39 



effect of cold on prepupae parasitized by Thripoctenus russelli 31 



effect of oviposition by Thripoctenus russelli in different ages 44 



effect of oviposition by Thripoctenus russelli in different stages 38 



femoralis in key to species 4 



femoralis, new species, description 4-5 



key to species 3-4 



