THE INSECT FAUNA OF GROUSE MOORS 155 



--Family 



The Syrphidce are essentially lovers of the sunshine, and are 

 often seen hovering in the air on bright days, and if disturbed, 

 darting off like lightning to hover again a few feet away. They are 

 difficult to catch in flight, and are most easily taken when feeding 

 or resting on flowers. Their occurrence in the crops of grouse 

 chicks I regard as of little or no importance. 



*PLATYCHIRUS MANICATUS, Mg. One female, Burley-in-Wharfedale. 

 An example (female) found in a crop from Tulchan. 



PLATYCHIRUS CLYPEATUS, Mg. One female, Burley-in-Wharfedale. 



MELANOSTOMA MELLINUM, L. Three males and four females, Dun- 

 achton ; one female, Burley-in-Wharfedale ; one female, Ballin- 

 dalloch. 



SYRPHUS TORVUS, O.-S. One male and three females, Dunachton. 



SYRPHUS VITTIGER, Ztt. One male and four females, Dunachton. 



*SPH^ROPHORIA PICTA, Mg. One male, Burley-in-Wharfedale ; one 

 female, Ballindalloch. A male found in a crop from Tulchan 

 and another male in a crop from Dunachton. 



SERICOMYIA LAPPONA, L. One male taken on the moors at Dun- 

 achton. 



Family TACHINID^E. 



MACQUARTIA ? TENEBRICOSA, Mg. One example of what I take 

 to be this species was captured at Dunachton. 



CYNOMYIA MORTUORUM, Z. One male and one female of this 

 common, but handsome, " Flesh-fly " were taken at Dunachton. 



ONESIA COGNATA, Mg. One female, Burley-in-Wharfedale. 



Family MUSCID.. 



The " House-Fly " family. Insects of rapid flight, apparently 

 never eaten by the grouse. 



H/EMATOBIA STIMULANS, Mg. One female, Dunachton. 



POLLENIA RUDIS, F. Commonly resting on stones at Ballindalloch. 

 A common fly, of which six males were taken. 



MORELLIA SIMPLEX, Ler. One male, Dunachton ; one male, 

 Burley-in-Wharfedale. 



* Family ANTHOMYIID.^. 



The remains of flies belonging to this family, but not deter- 

 mined, were found in crops from Glen Eunnich and Dunachton. 



HYETODESIA LUCORUM, Fin. Two males and one female, Dun- 

 achton ; one female, Ballindalloch. 



