Arytinnis pileolata (Loginova) 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 : 412-413

Arytinnis pileolata (Loginova) comb. n.

(figure 19C)

Arytainilla pileolata Loginova, 1976: 26 ; Hodkinson and Hollis, 1987: 42.

Adult

Colour. Pale grey-green or yellow-green; forewing cells with faint brown patches apically, veins uniform light or dark brown.

Description. Loginova (1976).

Nymph

Colour. First to third instars cream and black or orange-red, 4th-5th instars green with black tergites.

Fifth instar structure. Antennal segments seven.

Fifth instar measurements. (Specimens 4) BL: 1.53–1.8; BW: 0.98–1.03; WL: 0.49–0.55; CPL: 0.46–0.5; CPW: 0.63–0.72; RW: 0.19–0.2; HW: 0.64–0.68; AL: 0.91–0.96.

Fifth instar chaetotaxy. Head setae simple; ocular seta simple or occasionally narrowly capitate, dark, conspicuous; primary and secondary post-ocular setae distinctly capitate. Dorsal thoracic setae long, capitate only or with simple. Forewing pad macrosetae six to nine, distinctly capitate, marginal (four or five larger, one to three smaller and one proximal); hindwing pad macrosetae three or four, distinctly capitate, surface and marginal (one or two apical, one surface, one proximal); simple or sometimes rod microsetae on the wing pad surfaces. Dorsal abdominal pre-caudal macrosetae present on anterior tergites, long capitate, caudal plate macrosetae absent or two, distinctly capitate; sectasetae four pairs (first pair sometimes reduced); marginal abdominal setae (other than sectasetae) three pairs, distinctly capitate; pleurite setae paired capitate and simple. Foreleg without capitate setae; middle leg without capitate setae or one on tibia (distal) with or without small rod proximally; hind leg capitate setae on tibia, two or three (one proximal, one or two distal) with four or five small rod setae.

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

Distribution. Canary Islands: Tenerife.

Notes. This is the most polyphagous species in Arytinnis gen. n., occurring on three species of host plant in the genus Teline . It is found throughout the range of the host plant, Teline canariensis , where other sympatric species are restricted to the relict laurisilva habitat of this host. It is sympatric with A. menceyata on Teline stenopetala ssp. spachiana in pine forest habitat, and it is the only species on Teline osyroides ssp. sericea in the southern xerophytic habitat.

Biology. Small nymphs (1st–2nd instars) were observed at the base of developing fruit under the persistent calyx, and in leaf buds.

Material examined. (Ex Teline canariensis unless otherwise stated) Canary Islands, Tenerife: 20 WX, Anaga, El Bailadero, 19 May 1987, D. Hollis (BMNH). 1 W, 6 X, 7 nymphs, rd Buenavista to Santiago del Teide, 28°19∞N, 16°50∞30‘W, 900 m, 28 June 1997 (DP 21). 4 W, 4 X, 2 nymphs, Anaga, rd El Bailadero to Taganana, 28°32∞30∞N, 16°12∞W, 550 m, 30 June 1997 (DP 30). 14 W, 12 X, 2 nymphs, Teno, 7 km S of Buenavista, 28°20∞N, 16°51∞W, ca. 800 m, 4 April 1998 (DP 152). 14 W, 16 X, above El Portezuelo, nr El Púlpito, 28°29∞30◊N, 16°21∞15◊W, ca. 600 m, 25 April 1998 (DP 178). 4 W, 4 X, 2 nymphs, Güímar, Caldera de Pedro Gil, 28°20∞30◊N, 16°28∞W, 1775 m, ex Teline stenopetala , 26 April 1998 (DP 182). 39 W, 35 X, 14 nymphs, Barranco de Herques, 28°14∞45◊N, 16°26∞30◊W, ca. 500-600 m, ex Teline osyroides , 2 May 1998 (DP 184). 19 W, 11 X, 1 nymph, Barranco del Rey, 28°06∞30◊N, 16°41∞30◊W, ca. 700 m, ex Teline osyroides , 10 May 1998 (DP 186). 2 W, 8 X, 2 nymphs, nr La Vega, 28°20∞30◊N, 16°44∞W, ca. 800 m, ex Teline stenopetala and hybrids x T. canariensis , 31 May 1998 (DP 229).