Pariaconus poliahu 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 : 33-34

Pariaconus poliahu Percy sp. n. Figure 12

Adult colour.

Typically bicoloured, generally pale yellow to green on thorax and abdomen, head darker black or brown, and a dark dorsal stripe extending part or all the length of the body. Fore wing membrane slightly fuscous.

Adult structure.

Fore wing apex rounded; surface spinules distributed in all cells except few or none in r1 and c+sc; short setae on margins and veins. Antennae short (av. length 0.67; ratio AL:HW av. 1.43); genal processes short and bluntly rounded (ratio VL:GP av. 5.00); short to minute setae on vertex and thorax; distal proboscis segment short (av. length 0.06); hind tibia slender, length subequal to head width (ratio HW:HT av. 1.05). Male terminalia: paramere shorter than proctiger (ratio MP:PL av. 1.22), broad at base and tapering to apex with anteriorly directed hook; distal aedeagus segment longer than paramere (ratio PL:AEL av. 0.75) with base rounded or slightly angular and slightly inflated, and a large, broadly rounded, hooked apex (Fig. 12H) (ratio AEL:AELH av. 2.39). Female terminalia: proctiger short, dorsal surface convex apically, apex bluntly rounded, anal ring extremely long (ratio FP:RL av. 2.01); subgenital plate with moderate medial bulge ventrally, apex truncate; ovipositor apex with serrations (2-3 above, and below), valvulae dorsalis strongly convex dorsally.

Egg.

Unpigmented, slender, and apparently without striations, pedicel or tail.

Immature.

Unknown.

Host plant notes.

Collected from mixed glabrous and pubescent morphotypes.

Island.

Hawaii.

Distribution notes.

Only known from the Kohala region of Hawaii.

Biology.

Unknown.

Etymology.

Named for Poliahu, a goddess of snow in Hawaiian mythology, in reference to a concept that each snowflake is unique, as many individuals sampled for this species have highly divergent genetic haplotypes (noun in the nominative singular standing in apposition to the generic name).

Type material.

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