Paravibrissina pacifica sp. nov.

Figs. 15–18, 23, 33–34.

Recognition. This species resembles P. a d i s c a l i s at a glance, but differs from it in having a densely haired eye and median discal setae on the abdomen.

Description. Male. Head with dense grayish white pollinosity, upper fronto-orbital plate darkened; interfrontal area velvety dark brown; antenna dark brown except weakly reddish at base of 1st flagellomere; palpus reddish yellow. Vertex about 1/6 of head width; interfrontal area widened anteriorly, slightly narrower than fronto-orbital plate at middle; parafacial narrowed below, about as wide as 1st flagellomere at middle height; gena about 2/9 of eye height, with occipital dilation on lower and anterior 1/2; facial ridge rather well bulged. Inner vertical seta about 3/5 as long as eye height; outer vertical seta absent; ocellar seta very fine hair-like; 3 reclinate orbital setae, anterior 2 setae subequal in length and about 2/3 as long as inner vertical seta, posteriormost seta about 2/3 as long as anterior seta; 10–12 frontal setae, lowest seta nearly level with lower margin of pedicel; facial ridge with strong downcurved setae on lower 2/3 and with a row of fine setulae outside row of strong setae; gena with several long setae; occiput with 2–3 rows of fine short black hairs. Antenna falling short of lower margin of face by about 1/2 length of pedicel; 1st flagellomere about 3 times as long as pedicel; arista thickened on basal 1/4. Palpus weakly flattened apically, with dense short setulae on its entire length. Eye with dense long hairs.

Thorax black, with whitish, somewhat grayish, pollinosity, presutural area of scutum with 4 longitudinal black vittae, postsutural scutum with rectangular median black portion and 2 outer black vittae, scutellum black on basal 1/2. Four postsutural dorsocentral setae; 2 katepisternal setae; distance between bases of 2 subapical scutellar setae about 1/2 of that between subapical and basal setae of corresponding side.

Wing pale brownish hyaline; tegula and basicosta black; lower calypter translucent pale brownish. Second costal sector about 4/9 as long as 3rd and 4/5 of 4th; bend of vein M about 2.5 times closer to wing margin than to r-m crossvein.

Legs brownish, tibiae slightly paler on median portion; pulvilli pale brownish. Fore tibia with 2 posterior setae; mid tibia with 1 anterodorsal, 2 posterodorsal and 1 ventral setae; hind tibia with 2 preapical dorsal setae; claws and pulvilli longer than 5th tarsomeres.

Abdomen black in ground color, weakly reddish on sides and venter of 3rd tergum, with dense whitish pollinosity on anterior 1/4 of 3rd tergum, 2/5 of 4th and entire 5th, the pollinosity becoming more sparse and extending to posterior 1/3 on 3rd tergum and with shifting appearance on 4th. Hairs on dorsum short, dense and erect; syntergum 1+2 with 2 strong median marginal setae; 3rd tergum with 2 strong median discal and 2 strong median marginal setae; 4th tergum with 2 strong median discal and a row of strong marginal setae; 5th tergum with 2 discal and a row of marginal setae; venter of 4th and 5th terga each with a pair of hair patches of short and fine hairs on quadrate area of entire length of each tergum. Male terminalia: 5th sternum with broad median cleft, posterior lobe about 1/2 of whole length of the sternum; 6th tergum absent; cerci in dorsal view evenly narrowed posteriorly, separated on apical 1/5, inner wall smooth, in lateral view rather weakly curved dorsally on apical 1/5; surstylus in lateral view weakly curved near middle, about 1.5 times as long as wide, with only a few fine hairs; pregonite bare.

Female. Unknown.

Body length: 7mm.

Holotype. Male, NEW CALEDONIA: Col de Petchecara, 15 km W of Thio, 19.ii. 1978, H. Shima (BPBM).

Distribution. New Caledonia.

Etymology. Specific name is taken from the area of the locality of this species.