Making the most of your host: the Metrosideros-feeding psyllids (Hemiptera, Psylloidea) of the Hawaiian Islands Author Percy, Diana M. text ZooKeys 2017 649 1 163 http://dx.doi.org/10.3897/zookeys.649.10213 journal article http://dx.doi.org/10.3897/zookeys.649.10213 1313-2970-649-1 5615ED7CAF3E41B69963F6458804186D Pariaconus lehua (Crawford, 1925) comb. n. Figure 27 Trioza lehua Crawford, 1925: 29 Adult colour. General body colour yellow or orange. Fore wing membrane clear. Adult structure. Fore wing apex rounded; surface spinules distributed in all cells; short setae on margins and veins (Fig. 27A). Antennae short (length av. 0.81; ratio AL:HW av. 1.62); genal processes short (ratio VL:GP av. 2.30) and rounded apically; medium short setae on vertex and short setae on thorax; distal proboscis segment short (av. length 0.08); hind tibia slender, length subequal to head width (ratio HW:HT av. 1.02) (Fig. 27 B-C , F-G ). Male terminalia (Fig. 27 D-E ): paramere slightly shorter than proctiger (ratio MP:PL av. 1.08), broad and parallel-sided before tapering to a somewhat flat-topped apex with anteriorly directed hook; distal aedeagus segment length subequal to paramere (ratio PL:AEL av. 1.04) with base slightly angular and inflated, and a large hooked apex (ratio AEL:AELH av. 2.30). Female terminalia (Fig. 27 H-I ): proctiger dorsal surface more or less straight, apex bluntly acute, anal ring long (ratio FP:RL av. 3.50); subgenital plate with slight medial bulge ventrally, and acute apex; ovipositor apex with reduced serrations (2 above, 2 below), valvulae dorsalis not strongly convex dorsally. Figure 27. Pariaconus lehua . A fore wing B head C proboscis D male terminalia E aedeagus and paramere F head and antennae G hind leg H female terminalia I ovipositor (serrations indicated). Egg . Unpigmented, not sinusoidal, smooth, no microsculpturing, short pedicel 1/4 length from base, tail lacking. Immature. Unknown (see comment under Pariaconus crassiorcalix ). Host plant notes. Unknown. Island. Kauai Distribution notes. The type location is recorded only as "Nualolo" . Biology. The biology of this species is unknown, it may form cup galls on stems as morphologically it is close to the two stem cup-gallers, Pariaconus caulicalix and Pariaconus crassiorcalix . Type material. Holotype, male (?) (dry mounted, damaged, abdomen and fore wings missing, BPBM). See Table 2 for details of type and other material examined for this study.