Arytinnis ochrita, 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 : 425-426

Arytinnis ochrita sp. n.

(figures 8, 20D)

Adult

Colour. Pale yellow to ochre; forewing clear, veins uniform light brown.

Structure. Surface forewing spinules present throughout all cells, or reduced in one or more cells, medium density: 40–60 per 0.1 mm 2; apical spines in wing cells cu, m and m, but absent, or occasionally few present in cell r. Antennae short;

1 1 2 2

genal cones short. Male genitalia as in figure 8F–I; paramere with a reduced medially positioned ridge, apex in dorsal view contiguous along inner margin. Female genitalia as in figure 8E.

Adult measurements and ratios. (4 W, 4 X) total length: W 2.2 –2.52, X 2.4–2.68; WL: W 1.7 –1.98, X 1.88–2.08; HW: W 0.63 –0.66, X 0.64–0.67; AL: 1.08–1.27; GC: 0.08–0.11; PB: 0.11–0.13. WLPT: 2.72–2.97; GCVL: 0.42–0.61; VLW: 0.44–0.53; WLW: 2.38–2.54; CUR: 1.65–2.09; MR: 0.44–0.53; TLFL: 1.17–1.24. Adult genitalia W: MP: 0.25–0.28; PL: 0.36–0.38; AEL: 0.24–0.26; MSLH: 1.35–1.5; AHS: 0.29–0.31; PLSH: 1.46–1.57. X: FP: 0.67–0.72; FSP: 0.45–0.5; RL: 0.17–0.18; OV: 0.15–0.17; EL: 0.27–0.3.

Nymph

Colour. Third instars orange-yellow, 4th–5th instars yellow-green with black tergites.

Fifth instar structure. Antennal segments seven.

Fifth instar measurements. (Specimens 1) BL: 1.6–1.6; BW: 0.9–0.9; WL: 0.45–0.45; CPL: 0.39–0.39; CPW: 0.56–0.56; RW: 0.18–0.18; HW: 0.58–0.58; AL: 0.75–0.75.

Fifth instar chaetotaxy. Head setae simple and occasionally narrowly capitate; ocular seta inconspicuous; primary post-ocular seta distinctly capitate; secondary post-ocular seta indistinct, small simple. Dorsal thoracic setae short simple. Forewing and hindwing pads each with one, distinctly capitate, apical macroseta, paired with small simple seta on the hindwing pad; proximal setae indistinct; simple microsetae scattered on wing pad surfaces. Dorsal abdominal pre-caudal macrosetae absent (small simple only), caudal plate macrosetae absent; sectasetae three pairs (small capitate seta in first position); marginal abdominal setae (other than sectasetae) three pairs, distinctly capitate; pleurite setae paired capitate and simple or small rod. Foreleg without capitate setae; middle leg probably with one capitate seta on tibia (distal); hind leg with one capitate seta on tibia (distal).

Host plant. Teline osyroides ssp. osyroides .

Distribution. Canary Islands: Tenerife.

Notes. Known from only one location where the host plant, Teline osyroides ssp. osyroides , survives in a population of ca 1000–2000 individuals around the Masca valley region of northwestern Tenerife. This is the smallest and possibly rarest species in Arytinnis gen. n.

Etymology. Named for the small size and ochre coloration using the familiar diminutive form in Spanish.

Type material. Holotype W (slide mounted), Canary Islands, Tenerife: Barranco de Masca , 28°18∞N, 16°50∞30◊W, ca 600 m, 4 April 1998 ( BMNH) . Paratypes 7 W, 5 X, 1 nymph, as for holotype ( BMNH) . 2 X, as for holotype except, 2 July 1997 ( BMNH) . 1 W, 1 X, as for holotype ( DZUL) . 1 W, 2 X, as for holotype ( NHMB) .