NORTH AMERICAN TETRASTICHUS — BURKS 



599 



Species of this genus have been reared from the eggs, larvae, nymphs, 

 pupae, and (very rarely) adults of other insects. A number of the 

 species of Tetrastichus are hyperparasites. Further rearing work 

 and study very well may show that some of the species of Tetrastichus 

 now thought to be primary parasites are actually secondary. 



Known hyperparasites in this list are indicated by a dagger, and 

 the primary host (when known) is given in parentheses; an asterisk 

 is placed before those species which are probably or possibly secondary 

 parasites; and those species having a questionable host record are 

 indicated by a double dagger. 



Host 



Parasite 



ORTHOPTERA 



Blatta orientalis Linnaeus 

 Blattella germanica (Linnaeus) 

 Oecanthus sp. 



Periplaneta americana (Linnaeus) 

 Periplaneta australasiae (Fabricius) 



hagenowii (Ratzeburg) 

 hagenowii (Ratzeburg) 

 oecanthivorus compar Gahan 

 hagenowii (Ratzeburg) 

 hagenowii (Ratzeburg) 



ODONATA 



Lestes sp. 



polynemae Ashmead 

 THYSANOPTERA 



Oynaikothrips uzeli (Zimmerman) 

 Liothrips laureli (Mason) 

 Liothrips urichi Karny 



thripophonus Waterston 

 thripophonus Waterston 

 thripophonus Waterston 



HOMOrTERA 



Aphis gossypi Glover 

 Aphis maidis Fitch 

 Aphis pomi De Geer 

 Aphis spp. 



Calophya nigripennis Riley 

 Lecanium corni Bouche 

 Lecanium nigrofasciatum Pergande 

 Lecanium persicae (Fabricius) 

 Paratrioza cocker elli (Sulc) 

 Phcnacoccjis acericola (King) 

 Phenacoccus helianthi Cockerell 

 Physokermes insignicola (Crawford) 

 Pulvinaria oigeloviae Cockerell 

 Saissetia oleae (Bernard) 

 Trioza spp. 



*minutus (Howard) 

 tmarylandensis (Girault) 

 *minutus (Howard) 

 *minutus (Howard) 

 %triozae Burks 

 *minutus (Howard) 

 *minutus (Howard) 

 *minutus (Howard) 



triozae Burks 

 *minutus (Howard) 

 *minutus (Howard) 

 *minutus ( Howard ) 

 *minuUis (Howard) 

 * mi nut ns (Howard) 



dyrus Burks 



gelastus Burks 



NEUROPTERA 



Chrysopa oculata Say 

 Chrysopa plorabunda Fitch 

 Chrysopa rufllabris Burmeister 

 Malacomyza westwoodi (Fitch) 



chrysopae (Crawford) 

 chrysopac (Crawford) 

 chrysopae (Crawford) 

 cacrulescens Ashmead 



