Miller. — The Diptera Fauna of New Zealand. 315 



meso, petro-, and sterno-pleurae clothed with long golden hairs. Legs 

 robust, black, and bristly, the bristles short and black on the coxae and 

 femora, longer, and golden, in some lights, on the tibiae and tarsi ; coxae 

 greyish-pruinose with long grey hairs, the anterior coxae large and flattened ; 

 femora with long pale bristle-like hairs along posterior side, those of the 

 posterior femora shorter ; the latter are broadened and have a densely 

 spinose protuberance on lower side near apex (fig. 59) ; tibiae densely 

 clothed with golden bristle-like hairs most conspicuous distally ; posterior 

 tibiae broadened and curved ; tarsi broadened, a conspicuous bristle at 

 anterior angle of each joint and a stiff golden brush beneath ; metatarsi 

 short and crescentic, each anterior angle being produced along each side 

 of the onychotarsi ; pulvilli pale yellow ; empodium styliform (fig. 56) ; 

 claws large and tawny with black tips. Wings tinged with brown, the 

 stigma darker ; veins blackish-brown ; cell R t open ; vein R 4 + 5 slightly 

 curved into cell R 5 ; cross-vein r-m beyond middle of cell 1st M 2 (fig. 4) ; 

 anal angle fringed with short delicate hairs ; squamae opacpie and densely 

 fringed with long greyish branched hairs ; anti-squamae fringed with short 

 hairs ; halteres tawny. 



Abdomen (fig. 67) elongate and conical, about as wide as the thorax, 

 margined with delicate yellow hairs and the surface clothed with short 

 ones ; black bristle-like hairs on 5th segment and fringing the posterior 

 margin of 4th ; general colour dullish black ; on the 2nd, 3rd, and 4th 

 segments are yellowish-white triangular spots, indistinct in some lights, 

 and arranged as in fig. 67 ; 5th segment shiny black and transversely 

 rugose ; retracted segments yellowish-brown. 



c£. Eyes contiguous at a point on front (fig. 50), which is whitish- 

 yellow to golden ; face as in 9 but the lighter areas whitish ; black median 

 stripe apparent only in certain lights, but a permanent black area beneath 

 antennae ; a shiny black band on each side from antennae to eye-margin ; 

 occiput cinereous. Wings comparatively clear and shorter than the 

 abdomen, which is narrow, the sides more or less parallel though broader 

 basally ; spots on 3rd segment elongated ; genital segments (fig. 61) densely 

 covered with bristle-like black hairs ; claspers very long and narrow. 



<$. Length, 13 mm. $. Length, 12-17 mm. 



Plesiotype : No. 1070, D. M. 



Habitat. — Wellington (E. H. Atkinson) ; Central Otago (W. G. Howes) ; 

 Nelson (D. M.). 



Subfamily ERISTALINAE. 



Eyes of male holoptic or dichoptic, bare or hairy ; face with a central 

 protuberance ; cell R t open or closed ; cross-vein r-m beyond middle of 

 cell 1st M 2 ; vein R 4 + 5 strongly curved into cell R 5 ; posterior femora 

 frequently broadened. 



Genus Mallota Meigen (1822). 



On account of the pilosity of the body, the bristly legs, the bristly 

 swelling on lower side of the posterior femora, the tuberculate scutellum, 

 the shape of the face, and the wing-venation, the following species, origin- 

 ally described by Fabricius, belongs neither to Eristalis nor Helophilus, in 

 which genera it was placed by Hutton. In 1881 Hutton, though he retained 

 it in Eristalis, remarked that " the shape of the legs puts this species into 

 the next genus " {Mallota) ; but when reconsidering the matter in 1900 he 

 decided in favour of the genus Helophilus. 



