1908] 



Catalogue of the Genus Alaptus 



181 



from the pupa of Icerya purchasi Maskell, the stage of the host 

 is not definitely known for the four remaining species (caecihi, 

 eriococci, globosicornis and iceryae.) Of the two undisputedly 

 correct records, one of the hosts is a coccid pupa, and the other 

 a psocid egg. 



TABLE I. Tabular view of the recorded host relations of the species of 

 Alaptus. 



Parasite-Alaptus: 



1. caecilii Girault 



2. eriococci Girault 



3. excisus Westwood 



4. fusculus Walker 



5. fuscus Foerster 



6. globosicornis Girault 



7. iceryae Riley 



8. immaturus Perkins 



9. minimus Walker 



10. pallidicornis Foerster 



11. pallipes Ashmead 



Host. 



Caecilius aurantiacus 



Hagen 

 Psocid 

 Aleyrodes femaldi Morrill 



Eriococcus araucariae 



Maskell 

 Chrvsomphalus aurantii 



' Maskell 

 A tineid 



? 



? 

 Lepidosaphes beckii 



(Newman) 

 Icerya purchasi Maskell 



Aspidiotus rapax Corn- 

 stock 

 Jassidae 



? 



Stage 



of 

 Host. 



egg 



Male 

 pupa. 



? 



egg 



Remarks. 



undetermined 

 doubtful 



doubtful 



a. This is doubtfttl, from the nature of the host, unless the egg was infested. 

 Cf Rilev and Howard, 189:3. 



DISTRIBUTION OF THE GENUS. 



The species of the genus Alaptus occur in widely separated 

 localities and the genus is represented in three continents : Europe 

 (including England), North America and Australia. The species 

 known to occur in Europe are excisus Westwood (England?; 

 Austria — Dalla Torre, 1898), fusculus Walker (England), fuscus 

 Foerster (Switzerland), minimus Walker (England), and palli- 

 dicornis Foerster (Germany) ; the North American species are 

 pallipes Ashmead (Florida), iceryae Riley (California), globosi- 

 cornis Girault (Florida), caecilii Girault (Florida, California), 

 and eriococci Girault (California) ; the Australian species is imma- 

 turus Perkins (Queensland). The genus is therefore represented 



