THIKTY-FUUKTH FRriT-GROWERS ' COXVEXTIOX. 



53 



Thf Tachina tiies lay their eu^fs on the outside of their victims, while 

 tlie others usually place them within the bodies of the insect parasitized. 



Many predaeeous species belong to the bee and wasp order. Hymc- 

 itoptera. and include all the wasps : the two- winged order, Diptera, where 

 we find the Syrphus tiies, and the robber flies, the latter of which even 

 kill bees : and the order of beetles, Coleoptera, which includes the army- 

 A\orm destroyer and the ladybird beetles. To the family of the lady- 

 bird beetles belong the Avell known Vedalia. We also have many bugs 

 ;ind lacewing flies, which are predaeeous. I give the following table of 

 the most important ones: 



Commou Xame. 



Sficiitlfic Xante. 



Family. 



Insect Attacked. 



Army-worm 



Cal-o-si'i-ma 



Ca-rab-i-dse 



Army- worm. Cater- 



I )estroyer 



sem-i-lae-ve 





pillars. 



Many Ground 



^'arious species 



Ca-ral)-i-dae 



Caterpillars, etc. 



Beetles 





Twice-stabbed Ladv- 



Chi-luch-o-rus 



Coc-ci-nel- 



Black Scale. 



bird 



bi-vnl-ne-rus< 



li-diP 





Imported Chinese 



( "lii-lnch-o-rus 



Coc-ci-nel- 



San .Tose Scale. 



I^adybird 



sim-i-lis 



li-d» 





California Ladybird 



Coc-ci-uel-la 



Coc-ci-nel- 



IMant r^ice. 





cal-i-for-ni-ca 



li-d<e 





Ked Ladybird 



Coc-ci-n»'l-]a 



Coc-ci-ncl- 



Plant Lice. 





san-sruin-e-a 



li-d{e 





Mealy-biijr Ladybird 



C ry p-f o-lae-mus 



C oc-c i - nc 1 - 



Mealy-bugs. 





mon-trou-zie-ri 



li-dae 





Pilate's Ladybird 



Ex-o-cho-mus 



Coc-ci-ut' 1- 



Black Scale. 





pi-la-te-i 



li-da^ 





Mealy-bujr Ladybird 



1 1 v-per-as-pis 



Coc-('i-nel- 



^lealx'-bugs. 





lat-er-a-lis 



li-da- 





Ambiguous Ladybird 



Hip-po-da-mi-a 



Coc-ci-ut'l- 



Plant Lice. 





am-big-u-a 



li-dae 





Spotted Ladybird 



Hip-po-da-mi-a 



Coc-ci-nC*l- 



Plant Lice. 





con-Nvr-sens 



li-dae 





Vedalia 



N6-vi-us (Ve-da- 



Coc-ci-nC'l- 



White Scale. 





li-a) car-di-na-lis 



li-dae 





Koebele's Ladybird 



Xo-vi-us koob-e-lae 



Coc-ci-nel- 



White Scale. 







li-dae 





Steel-blue Ladybird 



Or-cus cha-Iyb-e-us 



Coc-ci-nOI- 



Red Scale. 







li-dse 





Spotted Orcus 



Or-cus 



Coc-ci-nel- 



Black Scale. 





aus-tra-ia-si-ae 



li-dse 





Rhizobius 



Rhi-ZM-bi-us 



Coc-ci-nel- 



Black Scale. 





ven-tra-lis 



li-dae 





Puri)le Scale Rhizo- 



Rhi-zw-bi-us 



Coc-ci-nel- 



Purple Scale. 



bius 



lo-phan-tne 



li-dse 



Small Rhizobius 



Rhi-zu-bi-us 



Coc-ci-nel- 



Black Scale. 





deb-i-lis 



li-dae 





MitH Ladybird 



Scym-nus va-sans 



Coc-ci-nMl- 



Bryobia Mite. 





!i-da? 



There are numerous bug^ that help to keep down our various pests. 

 The lace^vings, also; especially the Chry-s6-pa flies or green-wing 

 Chrysopa is of special note as an enemy of the plant lice. 



Mr. Pease has called attention to the fact that most of our dreaded 

 pests, many of which would be terribly serious, are held in check almost 

 entirely by their insect enemies. The soft brown scale and the cottony 

 cushion scale are striking examples. Both of these scales are exception- 

 ally prolific: yet both are rendered harmless, and the last by an 

 imported species, the Vedalia. There are four species of scale insects, 



