GAKDEN FLrEA-HOPPER IN ALFALFA. 



11 



Table III. — Infestation in cowpeas by Halticus citri, showing the number of eggs in the 



leaf and where deposited. 



Leaf No. 



Eggs 

 deposited 

 in upper 

 surface. 



Eggs 

 deposited 

 in lower 

 surface. 



Total 



number 



of eggs 



deposited. 



Leaf No. 



Eggs 1 Eggs 

 deposited deposited 

 in upper in lower 

 surface, surface. 



Total 



number 



of eggs 



deposited. 



1 



4 

 

 1 

 2 

 

 6 

 1 

 

 6 

 9 



10 

 4 

 1 

 2 

 5 

 

 8 

 1 

 

 6 

 4 

 6 

 1 



12 

 7 



1 

 

 

 





 

 6 

 

 2 

 

 2 

 

 

 

 

 

 1 

 4 

 8 

 1 

 

 

 

 2 

 

 4 



5 

 



1 

 2 

 

 6 

 7 

 

 8 

 9 



12 

 4 

 1 

 2 

 5 

 

 9 

 5 

 8 

 7 

 4 

 6 

 1 



14 

 7 

 6 



27 



28 



29 



30 



31 



32 



33 



' 34 



35 - 



36 



37 



38 



39 



40 



41 



42 



43 



44 



45 



46 



47 



48 



49 



50 



Total... 



9 

 3 



1 





 6 

 1 

 4 

 1 

 11 

 

 2 

 7 

 3 

 2 

 



I 

 4 

 2 

 1 

 3 

 2 

 1 





 6 

 

 

 

 

 

 1 

 

 2 

 3 

 

 

 1 

 

 

 

 



1 





 

 



1 







9 

 9 



1 

 2 

 

 6 



1 

 5 

 1 

 13 



I 



7 

 4 

 2 

 



1 

 



2 

 1 

 3 

 2 

 1 



2 



3 



4 





6 



S 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



164 



46 



210 



In the field observations and laboratory studies it was found that 

 Halticus cilri prevails on a wide range of species of host plants. The 

 following is a list of the host plants, as noted by the writer, together 

 with those recorded in the literature: 



Alfalfa (Medicago saiiva), red clover {Trifolium pratense), covrpea.s(Vigna sincn^), 

 ragw^eed {Ambrosia artemisiaefolia) , hollyhock {Althaea rosea), ground cherry {Physalis 

 pnbescens), sorghum {Andropogon sorghum), prickly lettuce {Larluca scariola), Imr- 

 dock {Arctium lappa), thistle {Cnicits anrnsis), crab-grass {Synthcrisma sangninale), 

 Kentucky bluegrass (Poa pratensis), oats (Arena sativa), rye (Srcale ccrealc), wheat 

 {Tnticnm citlgarc), corn {Zca mays), rape {Brassica napus), barley (Ilordeum vulgare), 

 Jerusalem artichoke ( Hclianthus tuberosus), Johnson grass {Andropogon halcpmsis), 

 celery (Apium graveolens), wild mulberry {Moras rubra), bur clover {Medicago 

 arabica), sweet clover {Melilotus alba), wild morning-glory {Cnnvohulvs arrcvsis), 

 hackberry (Celtis occidentalis), cocklebur {Xanthium sp.), eggplant {Solanum vif- 

 longena), Irish potato {Solanum tuberosuv}), sweet potato ilpomoea batatas), peach 

 (Ami/gdalus persica), cucumber {Cucumis sp.), tomato (Lycopersicon lycopcrsicon), 

 tobacco {Nicotiana tabacum), bean {Phascohis sp.), May-pops {Passifora incamata), 

 marigold {Calendula officinalis), verbena ( ]'crbenaincisa), cotton (Gossypivm hirsutvm), 

 beggar-weed (Meibomia toriuosa), white cluvor (Trifolium carol inianum). 



DESCRIPTION. 



ADULT. 



On first sight the brachypterous female adult of this species 

 (fig. 7) is likely to be confused with that of a flea-beetle, since both 

 are saltatorial and resemble each other in color and general appear- 

 ance, even though they represent two different ordei"s. 



