66 THE AKGENTINE ANT. 



LIST OK COCCID^ AND APHIDID^ ATTENDED BY THE ARGENTINE ANT. 



Upon bamboos: Asterolecanium bambusse Bdv., Odonaspis secreta Ckll., Odonaspis 



inusitata Green. 

 Upon l)anana: Coccus hesperidum L., Chrysomphalus aonidum L. 

 Upon cotton: Aphis gossj/pii Glov. 



Upon corn: Undetermined aphis (prol)al)ly Aphis maidis Fitch). 

 Upon figs: Pseudococcus citri Risso, Lecaniodiaspis sp., Aspidiotus camcJliH^ Sign. 

 Upon hickory, elm, hackberry, and various shade trees: Pseudococcus sp., Ceroplastcs 



cirripedifonnis Comst., Ceroplastes Jloridcnsis Comst., Chionaspis longiloha Cooley, 



Chionaspis americana Johnson. 

 Upon magnolias: Neolecanium cornuparvum Thro, As pidiotus camellix Sign., Toumcy- 



ella turgida Ckll. 

 Upon mulberries: Chrysomphalus tenebricosus Comst. 

 Upon oaks: Kerraes gaUiformis Riley, Eulecanium caryse Fitch, Eulecanium r/ucr- 



cifex Fitch, various aphidids. 

 Upon orange: Coccus hesperidum L., Parlatoria pergandii Comst., Lepidosaphes beckii 



Newm., Lepidosaphes gloverii Pack., Chrysomphalus aoniduvi L., Aphis gossypii- 



Glov.; also the white fly, Aleyrodes citri R. & H. 

 Upon palms and other ornamentals: Coccus hesperidum L., Eucalymnaius tessellatus 



Sign., Aspidiotus latanix Sign., Aspidiotus hederx. Vail., Chrysomphalus dictyospermi 



Morg. 

 Upon peach, pear, and other fruits: Aspidiotus perniciosus Comst., Aulacaspls penta- 



gona Targ., various aphidids. 

 Upon persimmons: Ceroplastes cirripediformis Comst., Eulecanium corni Bouch^, Pulvi- 



naria vitis L. 

 Upon strawberry: Aphis forbesi Weed. 



Upon sugar cane: Pseudococcus cnlceolarix Mask., Aphis gossypii Glov. 

 Upon sweet gum: Cryptophyllaspis liquidambaris Kotinsky. 

 Upon various shrubs: Coccus hesperidum L., Saissetia olex Bern., Pulvinaria cupamx 



Ckll., Aspidiotus latanise Sign., Chrysomphalus aonidum L. 

 Upon willows: Eulecanium nigrofasciatum Perg., Pseudococcus sp. {near citri) , Chion- 

 aspis salicis-nigrx Walsh, Aspidiotus perniciosus Comst., various undetermined 



aphidids. 



In considering the remarkable increase in scale insects and aphidids 

 which mvariably accompanies heavy infestation by this ant one can 

 not avoid taking into account the persistence with which tlie ants 

 drive away ladybird beetles which attempt to prey upon the insects 

 fostered by the ants. So thorouglily are the Coccidge and Aphididss 

 protected in this manner that it is rare that a ladybird can be found 

 at all on the infested trees. The only exceptions to this rule thus 

 far noted are a species of Pentilia, a few specimens of which the 

 senior autlior found in an infested orange grove below New Orleans, 

 and the coccinellid mentioned before as preying upon the magnolia 

 scale. 



ANTAGONISM TOWARD OTHER INSECTS. 



The Argentine ant is strongly antagonistic to nearly all forms of 

 insect life, with the exception of the Coccidae and Aphididse. The 

 amount of damage it is able to inflict upon other insects, however, is 

 governed by the strength, fleetness, structure, or habits of the 



