Pariaconus kapo 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 : 31

Pariaconus kapo Percy sp. n. Figure 10

Adult colour.

General body colour yellow to brown. Head darker than the rest of the body, apparently not distinctly bicoloured (e.g. without distinct dorsal stripe). Fore wing membrane clear, or slightly fuscous.

Adult structure.

Fore wing apex rounded; surface spinules dispersed in all cells but reduced or none in r1 and c+sc; setae on margins and veins short to minute (Fig. 10A). Antennae moderately long (av. length 0.94; ratio AL:HW av. 1.61); genal processes atypically well developed and bluntly rounded (ratio VL:GP av. 2.80); short to minute setae on vertex and thorax; distal proboscis segment moderately long (av. length 0.11); hind tibia slender, and longer than head width (ratio HW:HT av. 0.87) (Fig. 10 B–E). Female terminalia (Fig. 10F): proctiger dorsal surface more or less straight, longer than subgenital plate (ratio FP:FSP av. 1.15), apex acute, anal ring moderately long (ratio FP:RL av. 3.50); subgenital plate with slight medial bulge ventrally, apex acute; ovipositor apex with reduced serrations (2 above and 2-3 below), valvulae dorsalis not strongly convex dorsally.

Egg.

Unknown.

Immature.

Unconfirmed, but 1st instars recovered on the surface of leaves at the collection locality have a setal arrangement similar to that illustrated for Pariaconus oahuensis (Fig. 50F), with narrow, blunt sectasetae: anterior margin of the head with simple setae only, a single pair of post ocular sectasetae, a single pair of sectasetae on the apices of each wing bud, and the margin of the abdomen with 8 pairs of sectasetae.

Host plant notes.

Collected from pubescent morphotypes.

Island.

Hawaii.

Distribution notes.

Only known from Kohala.

Biology.

Unconfirmed, but this species was collected from low growing pubescent forms in upland bog; eggs and 1st instar immatures were recovered from the plant surface among the trichomes along the mid-rib (upper leaf surface) and petiole, these eggs have widely spaced interrupted surface striations, a short pedicel and a long tail, however, two other bicoloratus species ( Pariaconus proboscideus , and Pariaconus wyvernus form gorgonus ) were collected at the same site and therefore association of this egg type remains uncertain.

Etymology.

Named after Kapo, a goddess of fertility in Hawaiian mythology (noun in the nominative singular standing in apposition to the generic name).

Comments.

Currently known from only one female; this is the largest species in the bicoloratus group and is unusual for the more well developed genae.

Type material.

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