1892.] 



i8i 



THE HYMENOPTERA - ACULEATA 

 OF LANCASHIRE & CHEwSHIRE, 



BY WILLOUGHBY GARDNER, F.R.G.S. 

 (Continued from pa<^c 172.) 



NOMADA. 



This is the first genus of Parasitical or Cuckoo Bees, as they are 

 often called. These insects, instead of makin<4' burrows f(;r themselves 

 and storing up food for their offspring l)y their own labours, 

 appropriate the fruit of the toil of other bees, and lay their eggs in the 

 carefully constructed and well-victualled cells of various species. 



The Nomadas are sometimes particular, but more often promiscuous 

 in their parasitism; as far as observation goes, however, the following 

 species appear to be more or less exclusive in the choice of their hosts, 

 viz : — 



A^. horealis parasitical upon Andreud Clavkella. 



,, ,, Euceva lonn^icomis. 



sexfasciata 



F ahviciana 



alhogutata 

 ochrostoma 

 lateralis 

 fewuginata 



fiicata 



solidaginis 



,, nijicornis 



, , ftt,rva 



N. altcviiata 



,, Lathhiiriana 



[ 



Panufgus uf sines, 



probably on some 

 Andrena. 

 Andrena avgentata. 



labialis. 

 ,, bucepliala. 

 ,, liuiiiilis. 

 I Halictiis leiicozoiiia . 



,, vnbicuiidns . 

 [a ndrena fiilvicrits. 

 Halictns leiicozojiins. 

 A ndrena Trinimerana . 

 ,, a triceps. 



fidva. 

 ,, nigvo-aenea . 

 Halictns niorio. 

 Andrena atriceps. 



,, nigro-aciiiii. 

 albicans, 

 labialis. 



[ 



The species recorded in our district are as iollows, viz. 

 OMADA, Fab. 



solidagmis, Panz. — Taken at Ivock Ferry, J-T.C 



