Pariaconus melanoneurus Percy

Percy, Diana M., 2017, Making the most of your host: the Metrosideros-feeding psyllids (Hemiptera, Psylloidea) of the Hawaiian Islands, ZooKeys 649, pp. 1-163 : 52-53

Pariaconus melanoneurus Percy sp. n. Figure 23

Adult colour.

General body colour mid- to dark brown. Fore wing membrane with brown pigmentation around wing base and patches of brown pigmentation bordering veins resulting in a distinct wing pattern (Fig. 23A).

Adult structure.

Fore wing apex rounded; surface spinules with limited distribution in cells c+sc and cu2, and absent or very limited in all other cells; long setae on margins and veins (Fig. 23A). Antennae long (av. length 1.31; ratio AL:HW av. 1.87); genal processes length short-medium, converging, and bluntly acute (ratio VL:GP av. 1.90); long setae on vertex and thorax; distal proboscis segment short (av. length 0.10); hind tibia thick, longer than head width (ratio HW:HT av. 0.87) (Fig. 23 B–C, F–G, I). Male terminalia (Fig. 23 D–E, H): paramere length subequal to proctiger (ratio MP:PL av. 1.04), paramere broad, more or less parallel-sided but broadening in apical 1/3 just below constriction to apex, apex with acute point directed anteriorly; distal aedeagus segment shorter than paramere (ratio PL:AEL av. 1.18) with base rounded and slightly inflated, and a large bluntly hooked apex (ratio AEL:AELH av. 2.29). Female terminalia (Fig. 23 J–K): proctiger dorsal surface slightly medial depressed, apex bluntly acute, anal ring short (ratio FP:RL av. 4.55); subgenital plate with slight medial bulge ventrally and apex blunt and slightly truncate, marginally longer than proctiger (ratio FP:FSP av. 0.93); ovipositor apex with distinct serrations (3 above, 3 below), valvulae dorsalis slightly convex dorsally.

Egg.

Light brown, smooth, apparently without microsculpturing but with a slight granular appearance, short pedicel 1/4 length from base, tail lacking (Fig. 23L).

Immature.

Unknown.

Host plant notes.

Morphotype preference unknown, adults collected on both glabrous and pubescent types.

Island.

Kauai.

Distribution notes.

Known from only one location in Kokee State Park.

Biology.

Unknown, but its close relationship with Pariaconus iolani and Pariaconus hiiaka suggest it is likely to make closed galls.

Etymology.

Named for the dark pigmentation around the fore wing veins (adjective in the nominative singular).

Comments.

This species is the only member of Pariaconus to have a distinctly patterned fore wing. Variation in paramere shape is illustrated in Fig. 23H.

Type material.

Holotype male (slide mounted, BMNH). See Table 2 for details of type and other material examined for this study.