Mir-r.KR. — New Species of Syi'pliidac. 125 



Art. XIV. — New Species of Syrphidae. 

 By David Miller. 

 [Head before the OtcKjo Institute, 1st November, 1910.] 



The two following species form a portion of a series of new species the 

 remainder of whicli will he published in the near future. 



Fam. SYRPHIDAE. 

 Genus Helophilus Meigen (1822). 

 Hutton, Trans. N.Z. Inst., vol. 33, p. 36. 



Species. 



Legs black ; the hairs of frons divided from those of the vertex bj^ 



a bare transverse band . . . . . . . . . . H. purehuensis. 



Legs yellow ; hairs of frons not divided from those of vertex by 



a bare transverse band . . . . . . . . H. cargilli. 



K. purehuensis sp. nov. 



Vertex black ; frons yellowish-white, with dark hairs and a little dark 

 tomentum ; the hairs of frons divided from those of the vertex by a bare 

 transverse band ; the hairs of frons curved forward, becoming shorter 

 toward the frontal lunule, which is bare, dark brown, and shiny, while those 

 of the vertex are arranged with the longer posterior hairs anteriorly curved 

 and the shorter anterior ones posteriorly directed ; the row of hairs posterior 

 to the vertical triangle are yellow. Eyes bare, dichoptic ; ocelli vermilion. 

 Face light yellow, bare, projecting outwards and downwards, but not so 

 much in the latter direction as in the former ; the central ridge of the face 

 is shiny and of a deeper yellow, w^hich colour, extending for about three- 

 quarters the distance from the epistome to the base of the antenna, tapers 

 suddenly to a point and disappears ; epistome bare, shiny, dark brown, 

 almost black ; this colour extends to the margin of the eye ; genae or cheeks, 

 same colour as the face, bear delicate yellow hairs ; delicate yellow hairs 

 beneath the lower margin of the eye (jowls), becoming very short on the 

 occiput. Proboscis of moderate length, posteriorly directed, black, except 

 at the tip, Avhere it is inclined to be reddish-brown. Antennae black ; 1st 

 and 2nd joints bristly, the latter joint bearing longer bristles on the an- 

 terior margin ; 3rd joint ovoid, arista bare. 



Thorax : Dorsum with 2 median and 2 lateral broad dark-brown longi- 

 tudinal stripes ; the intervening stripes are greyish-brown anteriorly, but 

 from the transverse suture to the scutellar suture these stripes merge into 

 black ; the surface of the dorsum is covered with yellow hairs of medium 

 length. Scutellum shiny, bronzy, clothed with long similarly pigmented 

 hairs. Pleurae greyish, hairy ; meso- and anterior ptero-pleurae bearing 

 long golden hairs ; halteres yellowish-brown. Wings tinged with brown, 

 subcostal cell with brown spot about the junction of the auxiliary with the 

 costa ; veins brown, lighter in colour toward the base. Yellow hairs 

 covering the 'surface of the legs, which are shiny black, except for the 

 anterior and middle knees and the proximal half of the tibiae, which are 

 dark yellow, and for the proximal portion of the swollen posterior femora, 

 Avhich is dark bronzy ; posterior tibiae slightly curved ; close-set short hairs 



