Cacopsylla spiraeicola ( Li, 2011 ) Luo & Li & Cai, 2016

Luo, Xinyu, Li, Fasheng & Cai, Wanzhi, 2016, Chinese psyllids in the genus Cacopsylla (Hemiptera: Sternorrhyncha: Psylloidea) associated with Spiraea (Rosaceae), Journal of Natural History 50, pp. 2215-2235 : 2229-2232

Cacopsylla spiraeicola ( Li, 2011) comb. nov.

Figures 7 (a–g), 8(e), 10(i–j)

Euphaleropsis spiraeicola Li, 2011: 492 .

Redescription

Adult.

Colouration ( Figure 10 (i–j)). Body brown in overall view. Vertex brown, discal foveae moderately darker. Genal processes slightly darker than vertex. Compound eyes black; lateral ocelli brown, medial ocellus orange. Antenna generally brown to dark brown, with basal half of segments III–V lighter. Thoracic dorsum with dark brown stripes and patterns. Thoracic pleurites generally brown, irregularly darkened along pleural sulci. Legs yellowish brown; pro- and mesocoxae dark brown, metacoxa irregularly darkened; trochanters dark brown; femora more or less darkened. Fore wing ( Figure 7 (f)) membrane hyaline, with brown to dark brown clouding, leaving breaches at apices of cells r 2, m 1, m 2 and cu 1; most veins brown, costal margin yellow. Hind wing membrane hyaline, more or less brownish along veins; veins light brown to brown. Abdomen and male and female terminalia dark brown to black.

Structures. Head ( Figure 7 (a)) inclined from longitudinal body axis by 45°, slightly narrower than mesoscutum transversely. Boundary between vertex and gena clear, without outstanding antero-outer angles; discal foveae relatively shallow, secondary foveae slightly concave. Surface of vertex finely sculptured with scaly microstructures and microscopic setae that gradually grow longer on antero-inner angles, exceeding length of setae around antennal insertion. Plane of genal processes inclined from that of vertex by about 45°. Gena processes about half as long as median suture of vertex, widely divergent apically, with apices nearly rounded. Antenna longer than HW, relatively thick; terminal setae rather short, the more distally situated one about 1/3 as long as the more proximally situated one ( Figure 7 (g)).

Mesopraescutum moderately produced forward, pressing pronotum to be moderately arched. Metatibia without genual spine, with four apical spurs, arranged in 1 + 2 + 1. Fore wing ( Figure 7 (f)) oblong oval, widest in the middle; veins relatively thick; height of cell cu 1 indistinctly longer than length of vein Cu 1b; surface spinules (in dorsal surface) and radular spinules (in ventral surface) completely covering the whole fore wing membrane.

Male terminalia: Proctiger ( Figure 7 (b)) without posterior lobe, gently arched, covered with nearly evenly spaced short setae. Paramere ( Figures 7 (b–c)) strongly curved forward at basal 1/4, then gently curved backwards; apical tooth finely congruent with the main part, moderately curved inwards, with tip acute and pointed forward; inner surface with dozens of erect short setae. Distal segment of aedeagus ( Figure 7 (d)) gently curved downwards; apical dilatation near oval, not hooked; ductus ejaculatorius relatively thick, sclerotised end tube projected obliquely backwards, and gently curved upwards. Subgenital plate ( Figure 7 (b)) with small anterior lobe, ventral surface waved in profile.

Female terminalia ( Figure 7 (e)): Relatively long and simple. Anal ring rather small; dorsal surface of proctiger smoothly convex near base of apical process; longitudinal row of rather long setae in dorsum of apical process formed of nearly evenly spaced setae. Subgenital plate relatively long and narrow in profile, without relatively long setae near dorsal margin. Valvulae dorsalis and ventralis slightly curved upwards.

Material examined

Holotype: male, dry mounted, Mountain Lv , Beizhen, Liaoning, China, April 1992, Guan Shuwei, on Spiraea salicifolia . Paratypes: 5 males, 6 females, dry mounted, 2 males, 2 females, slide mounted, 5 males, 5 females, preserved in absolute ethanol, same data as holotype. Non-type material: 1 male, 1 female, slide mounted, 5 males, 8 females, dry mounted, Lingshan , Mentougou, Beijing, China, 16 April 2012, Luo Xinyu, on Spiraea trilobata L .

Host plant

Unknown. In April of Liaoning province and Beijing, all psyllids are still in hibernation. Spiraea spp. recorded here are probably shelter plants.

Figures

Figure 7. Cacopsylla spiraeicola (Li, 2011), adult. (a) Head, front view, antennae removed; (b) male terminalia, in profile, ignoring distal segment of aedeagus and phallobase; (c) inner view of paramere; (d) distal segment of aedeagus; (e) female terminalia, in profile; (f) fore wing; (g) distal two segments of antenna. Scale bar: a = 0.222 mm; b–d, g = 0.124 mm; e = 0.155 mm; f = 0.625 mm.

Figure 10. Photographs of dried specimens of Cacopsylla spp., adult. (a–b) C. falcata sp. nov.; (c–d) C. hyalinonemae Li and Yang, 1989; (e–f) C. nocturna sp. nov.; (g–h) C. qilianensis sp. nov.; (i–j) C. spiraeicola (Li, 2011). a, c, e, g, i. lateral view; b, d, f, h, j. dorsal view. Scale bar = 1 mm.