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Genus Hilarempis Bezzi.
Vein Sc evanescent before reaching the costa; metapleurae bare.
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| 1 | A tawny-bodied species; abdomen black, with a tawny apex | kaiteriensis. |
| Cinereous or blackish species | 2 | |
| 2 | Thorax grey with four blackish-brown stripes; abdomen dark brown; legs brownish-black | benhami. |
| Species with tawny legs | 3 | |
| 3 | Body cinereous | fulvipes. |
| Body black | nigra n. sp. |
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| 1 | At least eight scutellars | benhami. |
| At most four scutellars | 2. | |
| 2 | Dorsocentrals altogether weak; one pair of strong prothoracics (fig. 59) | fulvipes. |
| Dorsocentrals ending in two or three strong bristles before scutellum; two or more pairs of prothoracics | 3 | |
| 3 | Three pairs of strong dorsocentrals posteriorly; two pairs of strong prothoracics (fig. 63) | nigra n. sp. |
| Two pairs of strong dorsocentrals posteriorly; four pairs of pro. thoracics, the outer one on each side strong, the remainder weak | kaiteriensis. |
H. benhami Miller.
H. benhami Miller, Trans. N.Z. Inst., vol. 45, p. 198, figs. 1 to 5, pl. 1, fig. 3, 1913.
H. kaiteriensis Miller.
H. kaiteriensis Miller, l.c., p. 200, figs. 6 to 8, pl., fig. 1.
H. fulvipes Hutton.
Hilara fulvipes Hutton, Trans. N.Z. Inst., vol. 33, p. 31, 1901.
Front cinereous, but darker in some lights; eyes deeply emarginate, dichoptic in both sexes; row of delicate frontal bristles on each side; ocellar triangle greyish-black, ocellar bristles present. Antennae comparatively large (fig. 58); first and second joints bristly and tawny, but darker at times; third joint clavate, blackish-brown, with a somewhat lighter reflection due to greyish pubescence; style very short. Face cinereous, owing to dense tomentum, but black ground-colour frequently reflected. Proboscis blackish-brown; palpi tawny. Occiput cinereous, but blackish in some lights; chaetotaxy as in H. nigra.
Thorax with depressed area before scutellum (which is rather truncated), brownish-grey, but cinereous at times owing to tomentum; the black ground-colour being conspicuous particularly on pleurae. Chaetotaxy (fig. 59)mainly as in H. nigra, although the rows of smaller bristles are distinct, while among them are some delicate golden hairs.
Wings (fig. 60) faintly yellowish, veins and stigma tawny; halteres tawny.
Legs tawny, with some delicate tawny bristles; tarsi rather fuscous; anterior coxae somewhat lengthened, their tibiae short; anterior protarsi of the male swollen (fig. 61).
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Abdomen black in ground-colour with cinereous tomentum; posterior margin of each segment with delicate bristles. Genitalia of male lying forward on abdomen (fig. 62); female abdomen ending in pair of blackish-brown stylets.
♂♀. Length, 3 mm.
Plesiotype: No. 1087, D. M.
Habitat.—Throughout New Zealand. Frequently seen on calm evenings dancing in swarms above bushes.
H. nigra n. sp.
♂. Eyes dichoptic, deeply emarginate, posterior margin slightly concave; front moderately wide, sides almost parallel, black, but in certain lights there is a broad silvery-grey orbital stripe on each side, leaving a narrow black medio-longitudinal one; at other times the whole front is silvery grey; a row of delicate frontal bristles on each side near orbits; ocellar triangle black; ocellar bristles distinct. Antennae large for size of head, inserted at about middle line; black, with greyish-brown reflection; minutely pubescent; first and second joints bristly, third long and clavate; style short and ending in small spine-like process. Face short, shorter than front, convex, with a few scattered delicate bristles. Proboscis blackish-brown; apical joint of palpi orange yellow to pale yellow, basal blackish-brown. Occiput black, with greyish reflection, convex (particularly above where the bristles are distinct along the orbits alone), though somewhat depressed behind ocellar triangle; chaetotaxy confined to row of orbital bristles.
Thorax black, with greyish and brownish reflections on dorsum and pleurae; a pair of very indistinct, widely separated, narrow, darker stripes on dorsum to be seen when light falls from in front. On dorsum are a few rows of indistinct delicate small bristles and a system of distinct ones (fig. 63).
Wings iridescent, veins yellow, Sc evanescent before reaching costa; anal angle distinct but not prominent; halteres pale tawny.
Legs tawny, tarsi and apices of tibiae fuscous; a row of conspicuous yellow bristles on upper side of anterior femora distally; otherwise legs not unusually bristly; anterior protarsi and apex of their tibiae only slightly enlarged.
Abdomen black, covered with short delicate bristles; genitalia black, prominent, recurved over abdomen, laterally compressed (fig. 64).
♂. Length, 3 mm.
Holotype: No. 1224, D. M.
Habitat.—Otira (J. W. Campbell), Ohau Valley; frequenting the foliage of bushes overhanging streams. Usually met with while beating.