Arytinnis hupalupa, 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 : 431-432

Arytinnis hupalupa sp. n.

(figures 12, 13C–D, 20A)

Adult

Colour. Grey-green or mid-green to yellow-green; forewing clear, veins uniform mid-brown.

Structure. Surface forewing spinules present in all cells, but reduced in one or more cells, sparse: less than 40 per 0.1 mm 2; apical spines in wing cells cu, m 1 1 and m, but absent, or occasionally few present in cell r. Antennae short; genal 2 2

cones very short. Genitalia elongate and slender. Male genitalia as in figure 12F–I; paramere apex small, positioned to the posterior of the top of the paramere, in dorsal view contiguous anteriorly or along inner margin (figure 13C, D); aedeagus distal segment with a well-developed, curved hook, tip of aedeagus turning upwards; male subgenital plate dorsal profile raised anteriorly. Female genitalia as in figure 12E; proctiger dorsal profile more or less straight, or with slight post-anal depression.

Adult measurements and ratios. (3 W, 3 X) Total length: W 2.6 –2.84, X 2.76–3.16; WL: W 2.1 –2.21, X 2.35–2.38; HW: W 0.66 –0.72, X 0.72–0.74; AL: 1.31–1.47; GC: 0.05–0.1; PB: 0.12–0.14. WLPT: 2.75–3.26; GCVL: 0.31–0.5; VLW: 0.41–0.48; WLW: 2.41–2.59; CUR: 1.61–1.93; MR: 0.45–0.49; TLFL: 1.13–1.2. Adult genitalia W: MP: 0.32–0.35; PL: 0.56; AEL: 0.32–0.33; MSLH: 1.31–1.47; AHS: 0.27–0.28; PLSH: 1.6–1.75. X: FP: 0.89–0.93; FSP: 0.56; RL: 0.17–0.2; OV: 0.2–0.21; EL: 0.18–0.26.

Nymph

Colour. First to second instars cream and orange, some with black tergites, 3rd–5th instars pale yellow or green with black tergites.

Fifth instar structure. Antennal segments seven.

Fifth instar measurements. (Specimens 5) BL: 1.45–1.9; BW: 0.93–1.13; WL: 0.54–0.61; CPL: 0.46–0.5; CPW: 0.62–0.66; RW: 0.16–0.17; HW: 0.59–0.62; AL: 0.75–0.82.

Fifth instar chaetotaxy. Head setae simple; ocular seta simple, inconspicuous; primary post-ocular seta narrowly or distinctly capitate; secondary post-ocular seta simple. Dorsal thoracic setae short simple. Forewing pad with one apical macroseta, simple or narrowly capitate; hindwing pad with one apical macroseta, distinctly or narrowly capitate, paired with small simple seta; proximal setae indistinct from simple microsetae scattered on the wing pad surfaces. Dorsal abdominal pre-caudal macrosetae absent or present on anterior tergites, short simple, caudal plate macrosetae absent (numerous small simple); sectasetae four pairs; marginal abdominal setae (other than sectasetae) three pairs, distinctly capitate (fourth small simple, or occasionally small capitate); pleurite setae typically paired simple, or simple with short capitate. Foreleg without capitate setae; middle leg without capitate setae or one on tibia (distal, or occasionally small capitate proximally); hind leg capitate setae (often narrow) on femur and tibia or tibia only—one or two (one larger distally, and typically one smaller proximally).

Host plant. Teline stenopetala ssp. microphylla and ssp. pauciovulata .

Distribution. Canary Islands: La Gomera.

Notes. It is occasionally sympatric with A. gomerae but is much more abundant in the humid laurisilva habitat than this species.

Biology. Small nymphs (1st–2nd instars) were observed on leaf buds and developing fruit.

Comment. The shape of the male paramere is intermediate between A. dividens and A. modica (see figure 13). Otherwise A. hupalupa is very similar but considerably smaller than these species.

Etymology. The name is that of the pre-hispanic king of La Gomera.

Type material. Holotype W (slide mounted), Canary Islands, La Gomera: rd Hermigua to Monte del Cedro , 28°07∞16◊N, 17°12∞30◊W, 700–1000 m, 25 May 1998 ( BMNH) . Paratypes 75 W, 70 X, 38 nymphs, as for holotype ( BMNH) . 2 W, 3 X, 4 nymphs, as for holotype ( DZUL) . 3 W, 2 X, 5 nymphs, as for holotype ( NHMB) .

Other material examined. La Gomera: 2 W, 4 X, nr El Cedro, 28°7∞30◊N, 17°14∞W, 950 m, 14 July 1997 ( DP 71 ) . 1 X, Ermita de las Nieves, 28°06∞30◊N, 17°11∞W, ca 1000 m, 30 July 2000 ( DP 344 ) . 1 X, Roque Agando, 28°06∞N, 17°12∞W, ca 1000 m, 31 July 2000 ( DP 345 ) .