Arytinnis menceyata, Percy Csiro, 2003

Percy Csiro, Diana M., 2003, Legume-feeding psyllids (Hemiptera, Psylloidea) of the Canary Islands and Madeira, Journal of Natural History 37, pp. 397-461 : 423-425

Arytinnis menceyata sp. n.

(figures 7, 18C)

Adult

Colour. Mid-green to yellow-green; forewing clear, veins uniform light brown. Structure. Surface forewing spinules present in all cells but reduced in cell c+sc, dense: 60–100 per 0.1 mm 2; apical spines in wing cells cu, m and m, but absent 1 1 2

from cell r. Antennae short; genal cones very short. Genitalia large and robust. 2

Male genitalia as in figure 7F–I; paramere apex in dorsal view contiguous posteriorly with inner margin concave; aedeagus distal segment with a well-developed, curved hook, tip not or only slightly turning upwards; male subgenital plate dorsal profile raised anteriorly with a distinct step. Female genitalia as in figure 7E.

Adult measurements and ratios. (3 W, 3 X) total length: W 2.6 –2.84, X 2.8–3; WL: W 2.13 –2.2, X 2.35–2.4; HW: W 0.71 –0.72, X 0.73–0.75; AL: 1.23–1.35; GC: 0.08–0.1; PB: 0.16–0.17. WLPT: 2.73–3.14; GCVL: 0.38–0.56; VLW: 0.41–0.5; WLW: 2.37–2.42; CUR: 1.57–1.81; MR: 0.42–0.49; TLFL: 1.18–1.26. Adult genitalia W: MP: 0.33–0.37; PL: 0.58–0.59; AEL: 0.36; MSLH: 1.33–1.4; AHS: 0.24; PLSH: 1.4–1.49. X: FP: 0.97–1; FSP: 0.6–0.63; RL: 0.15–0.19; OV: 0.24; EL: 0.24–0.27.

Nymph

Colour. First to second instars cream and orange with black tergites, 5th instars pale grey-green.

Fifth instar structure. Antennal segments seven.

Fifth instar measurements. (Specimens 3) BL: 1.48–1.8; BW: 1.05–1.1; WL: 0.52–0.56; CPL: 0.5–0.53; CPW: 0.7–0.72; RW: 0.16–0.17; HW: 0.62–0.63; AL: 0.75–0.77.

Fifth instar chaetotaxy. Head setae simple; ocular seta simple, typically dark and conspicuous; primary post-ocular seta distinctly capitate; secondary post-ocular seta simple or narrowly capitate. Dorsal thoracic setae short simple and long capitate. Forewing pad macrosetae 17–23, distinctly capitate, surface and marginal (10 marginal, 6–12 surface, one proximal); hindwing pad macrosetae 6–11, distinctly capitate, surface and marginal (two apical, three to eight surface, one proximal); proximal setae distinctly or narrowly capitate; numerous simple microsetae scattered on the wing pad surfaces. Dorsal abdominal pre-caudal macrosetae present on all tergites, short simple and long narrowly capitate, caudal plate macrosetae ±25, distinctly capitate; sectasetae four pairs; marginal abdominal setae (other than sectasetae) four pairs, distinctly capitate; pleurite setae paired capitate and simple. Foreleg capitate setae on tibia, one (proximal, occasionally simple); middle leg capitate setae on tibia, two (one proximal, one distal); hind leg capitate setae on tibia three to four (two proximal, two distal).

Host plant. Teline stenopetala ssp. spachiana , T. canariensis .

Distribution. Canary Islands: Tenerife.

Notes. Occurs sympatrically with A. pileolata . It is much more abundant than A. pileolata on the host plant, Teline stenopetala ssp. spachiana , in pine forest habitat; while only a few adults were found on the host plant, Teline canariensis , in laurisilva habitat.

Biology. Small nymphs (1st–2nd instars) were observed in leaf buds and were found inside folded young leaves.

Etymology. Named for the discovery of this species in the ‘Menceyato de Güímar’, one of several seats of power for the Guanche people of Tenerife.

Type material. Holotype W (slide mounted), Canary Islands, Tenerife: Güímar, Caldera de Pedro Gil , 28°20∞30◊N, 16°28∞W, 1775 m, ex Teline stenopetala , 26 April 1998 ( BMNH) . Paratypes 26 W, 26 X, 3 nymphs, as for holotype ( BMNH) . 2 W, 1 X, as for holotype ( DZUL) . 2 W, 2 X, as for holotype ( NHMB) .

Other material examined. Tenerife: 1 W, 3 X, Anaga , E of Pico del Inglés, 28°32∞15◊ N 16°16 ∞30◊W, ca 960 m, ex Teline canariensis , 25 April 1998 ( DP 179 ) .