Arytinnis incuba (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 : 437-438

Arytinnis incuba (Loginova) comb. n.

(figure 21C)

Arytainilla incuba Loginova, 1976: 28 ; Hodkinson and Hollis, 1987: 42.

Adult

Colour. Mid-green to yellow-green, paler orange on the thorax, with some mature specimens darker; forewing clear, veins uniform mid- or dark brown.

Description. Loginova (1976).

Nymph

Colour. First to third instars cream and orange, 4th–5th instars yellow-green or blue-green, with or without black tergites.

Fifth instar structure. Antennal segments seven.

Fifth instar measurements. (Specimens 5) BL: 1.6–1.95; BW: 1.03–1.15; WL: 0.6–0.61; CPL: 0.51–0.53; CPW: 0.68–0.8; RW: 0.19–0.21; HW: 0.68–0.73; AL: 1.18–1.22.

Fifth instar chaetotaxy. Head setae simple and narrowly capitate (mostly simple anteriorly and capitate posteriorly); ocular seta simple, dark, conspicuous; primary and secondary post-ocular setae distinctly capitate. Dorsal thoracic setae long capitate with short or minute simple. Forewing pad macrosetae 8–10, distinctly capitate, marginal (seven to nine outer margin, one proximal); hindwing pad macrosetae two, distinctly capitate, marginal (one apical, one proximal), apical seta paired with small simple seta; proximal setae distinctly capitate (rarely simple); simple or occasionally capitate or rod microsetae on the wing pad surfaces. Dorsal abdominal pre-caudal macrosetae present on anterior tergites, long capitate, caudal plate macrosetae typically absent, or two, distinctly capitate; sectasetae three pairs; marginal abdominal setae (other than sectasetae) three pairs, distinctly capitate; pleurite setae paired capitate and simple. Legs with simple setae only.

Host plant. Teline maderensis .

Distribution. Madeira.

Notes. Occurs throughout the host plant range and on both subspecies recognized (Arco Aguilar, 1983).

Biology. Eggs were found singly along the sericeous edges and midribs of mature leaves, or on petioles and stems. Clusters of eggs were also found under petiolar bracts and leaf bud bracts. Small nymphs (1st–2nd instars) were also observed in these locations, and on the fruit. Many nymphs were collected from vegetative plants.

Comment. This species is extremely similar to the Mediterranean species A. hakani , and a record from Sicily (Conci et al., 1993) may be a misidentification of the latter species.

Material examined. Madeira: 25 W, 20 X, 20 nymphs, Levada do Furado , W of Balcões, 900 m, 30 June 1998 ( DP 267 ) . 31 W, 15 X, 6 nymphs, Porto do Moniz, Levada da Central da Ribeira da Janela , 400 m, 1 July 1998 ( DP 271 ) . 17 W, 11 X, 16 nymphs, W of Encumeada , 1100 m, 3 July 1998 ( DP 274 ) . 16 W, 9 X, 6 nymphs, Encumeada, Levada do Norte , 1000 m, 3 July 1998 ( DP 276 ) .