Stevekenia aiea Percy, 2017, sp. nov.
Creators: name: Percy, Diana M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Triozidae
Stevekenia
Stevekenia aiea

description: Stevekenia aiea sp. nov.
(Figs. 1 H–L; 2I –M,O,R; 3D–E,G,M–N,Q)
Adult colour. General body colour light brown, yellow-green on abdomen; with darker brown markings on thorax abdomen and legs. Fore wing membrane with an irregular band of light brown pigmentation across basal 3rd of the wing.
Adult structure as for generic description with the following species specific characters: Moderately long setae scattered on ventral fore wing margin, cell m2 with a single cluster of marginal radular spines towards the posterior margin of the cell, and radular spine clusters narrow, fore wing cell m2 and cu1 subequal in size (ratio HM:HCU <2), vein Cu1 ~ 0.5 length of vein R (Fig. 1 H–I,L). Hind wing extremely short, length <2 mm, and ± 0.5 fore wing length (Fig. 1 J). Moderately long setae on head, thorax, legs, and sternites of female abdomen. Head with vertex extensions as two small diverging projections (Fig. 2 I–J). Antennae with a single, simple rhinarium apically on each of segments 4, 6, 8, 9, the length of longest seta on the terminal segment longer than segment 9. Hind tibia with small genual spine basally and less markedly stalked apical spurs (1+2) with the pair of spurs not or barely conjoined at the base (Fig. 2 M,O,R). Male subgenital plate rounded posteriorly in lateral view, paramere with a short anteriorly directed apex, distal aedeagus segment slightly constricted medially with apical head smaller, blunt, and ~ 0.5 length of distal segment (Fig. 3 D–E,G). Female subgenital plate more or less straight ventrally, and bluntly acute to acute apically (Fig. 3 M).
Egg. Shorter pedicel <0.5 length of egg, and linearly ordered cellular outgrowths, tail slender without cellular outgrowths (Fig. 3 Q).
Adult measurements (mm) and ratios. (1 male, 1 female) WL: 3.86–3.97; WW: 1.55–1.61; HW: 0.64–0.65; AL: 2.79; PB: 0.12–0.14; WL:WW: 2.47–2.50; WL:RsL: 2.91–3.11; CUR: 1.29; MR: 0.63–0.65; HM:HCU: 1.75– 1.89; HW:VW: 1.79–1.83; VL:VW: 0.17–0.25; AL:HW: 4.28–4.38; HW:HT: 0.88–0.90; HT:HF: 1.33–1.37. Male terminalia: MP: 0.25; PL: 0.20; AEL: 0.18; PL:HW: 0.31; MP:PL: 1.27; PL:AEL: 1.07; AEL:AELH: 2.09; PL:SH: 1.02. Female terminalia: FP: 0.65; FSP: 0.39; RL: 0.22; OVH: 0.07; EL: 0.28; EW: 0.09; FP:RL: 3.00; FP:HW: 0.99; FP:SP: 1.65; EL:EW: 3.18.
Immature. Unknown.
Host plant. Nothocestrum peltatum.
Distribution. This species is endemic to Kauai, and is only known from one location in Kokee State Park. The host plant is also endemic to Kauai.
Etymology. Named for the association with the host plant, the endemic Hawaiian genus Nothocestrum, using the Hawaiian name for the genus, Aiea (noun in the nominative case).
Comment. This species is mostly easily differentiated from S. nothocestri by the irregular band of light brown pigmentation across basal 3rd of the fore wing membrane, as well as other characters noted in comment under S. nothocestri and in the key.
Type material. Holotype male (slide mounted), Awaawapuhi Valley, Kokee State Park, Kauai, USA, ex Nothocestrum peltatum, 26 May 2002, “381-02” D. Percy leg. (BMNH). Paratype 1f (slide mounted), as for holotype (BMNH).
Gene sequences. GenBank KY971542 (COI), KY971544 (cytB).
description: Published as part of Percy, Diana M., 2017, A new endemic psyllid genus, Stevekenia gen. nov. (Hemiptera: Psylloidea, Triozidae), from the Hawaiian Islands with two new and rare species on threatened host plants in the endemic genus Nothocestrum (Solanaceae), pp. 370-380 in Zootaxa 4286 (3) on pages 373-377, DOI: 10.11646/zootaxa.4286.3.4, http://zenodo.org/record/828577