ABT. 28 CHALCID FLIES NORTH OF MEXICO BALDUF 89 



with certainty with any material at hand. Further rearings from 

 the galls of A. calif ornicus (Bassett) in the type locality are neces- 

 sary to determine the status of FuUaway's species. 



HOSTS OF THE SPECIES OF DECATOMA 



Most of the known North American species of Decatoma live 

 within galls made by Cynipidae. It is probable that they are para- 

 sitic on the larvae of the gall makers, but this relation has been 

 demonstrated only in the case of D. flava Ashmead, by Triggerson. 

 In the list below, the gall makers are cited as the hosts, but it is 

 to be understood that the parasites may possibly develop on other 

 insects that commonly share galls with the makers. 



Decatoma arnistevdamensis Girault has been reared from Har- 

 molita spp., or joint worms. D. nubilistigma Walsh was obtained 

 from a cecidomyid gall on willow, and D. querci Ashmead from a dip- 

 terous gall on oak. D. flaimninneiventris Girault is apparently di- 

 rectly parasitic on the bogus yucca moths, Prodoxus spp. The stem 

 swelling on Mimosa^ which yielded D. mimosae Balduf, may prove 

 to be a cynipid gall. 



Htmenopteba 



host species paeasite (decatoma) 



Aeraspis erlnacei (Beutenmueller) queroi-lanae (Fitch) 



macrocarpae Bassett flava Ashmead 



^ ^, . f disholcaspidis Balduf 



[occidentalis Balduf 



Ampliibolips confluentv^ spongiflca (OstenSacken) _ varians "Walsh 



inanis (Osten Sacken) varians Walsh 



. , . . , . ^ ^ „ \ querci-lanae (Fitch) 



Andricus actculatus Beutenmueller { ., ^ ,„ „„7-„/in-i. i,\ 



[queroirlcmae dorsalts (Fitch) 



/^ .^. f^s** Girault 



oalifomUMS (Bassett) .{ „^.,- -^ i,„ .„„ 



' ^ ygi-acilis FuUaway 



Iflorida Girault 

 querci-lanae (Fitch) 

 querd-lanae dorsalts (Fitch) 



flocci var querci-lanae (Fitch) 



florldensis (Beutenmueller) flava Ashmead 



foliatus (Ashmead) foUatae Ashmead 



lasius areolarius Kinsey occidentalis Balduf 



[occidentalis Balduf 

 lasius lasius Ashmead [suUmmaculata Girault 



[occideritalis Balduf 

 lasius suhlasius Kinsey [suUmmaculata Girault 



Ihrcvilobae Balduf 

 flava Ashmead 

 querci-lan.ae (Fitch) 



