Pariaconus kupua 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 : 77-80

Pariaconus kupua Percy sp. n. Figures 39, 51 E–F

Adult colour.

General body colour yellow-brown to green. Females often appear to have a dark abdomen due to darkly pigmented egg load. Fore wing membrane clear, or slightly fuscous.

Adult structure.

Fore wing apex bluntly acute to rounded; spinules sparsely distributed in all cells except r1; short setae on margins and veins (Fig. 39A). Antennae long (av. length 1.40; ratio AL:HW av. 2.07); genal processes long, only slightly shorter than vertex (ratio VL:GP av. 1.09), and acute or bluntly acute; long setae on vertex, shorter on thorax; distal proboscis segment short (av. length 0.11); hind tibia longer or subequal to head width (ratio HW:HT av. 0.94) (Fig. 39 B–D, H). Male terminalia (Fig. 39 E–G): paramere longer than proctiger (ratio MP:PL av. 0.85), slender, more or less parallel-sided before constricting below apex with anteriorly directed hook; distal aedeagus segment shorter than paramere (ratio PL:AEL av. 1.21) with base rounded, not or slightly inflated, and a shallow hooked apex (ratio AEL:AELH av. 2.30). Female terminalia (Fig. 39 I–J): proctiger long, dorsal surface convex, apex bluntly acute, anal ring short (ratio FP:RL av. 4.25); subgenital plate with slight medial bulge ventrally, acute apically; ovipositor apex lacking serrations, valvulae dorsalis moderately convex dorsally.

Egg.

Short, broadly ovoid to almost circular, pigmented brown (except tip of pedicel and tail), surface with microsculpturing, short pedicel with slightly inflated tip, tail extremely short.

Immature.

Colour and structure: 5th instar: Cream to orange. Elongate ovoid in outline, wing buds protruding with moderate humeral lobes (similar to Pariaconus montgomeri in Fig. 51A). Tarsi with large claws. Circumanal ring small (CPW:RW 18.40), u-shaped with a mostly single row of sometimes interrupted cells (Fig. 51F). Chaetotaxy: 5th instar: Head, thorax and abdomen with scattered long to medium-long simple setae (Fig. 51E).

Host plant notes.

Collected from glabrous morphotypes.

Island.

Maui.

Distribution notes.

Known from east and west Maui; the molecular analysis clearly distinguishes eastern from western haplotypes.

Biology.

Galls stems and occasionally petioles, resulting in irregular swellings.

Etymology.

Named after the kupua , tricksters of the island forests in Hawaiian mythology (noun in the nominative singular standing in apposition to the generic name).

Comments.

Molecular data recovers this taxon as sister to Pariaconus hualani from Molokai.

Type material.

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