Ctenarytaina smetanai, Burckhardt, 2021

Burckhardt, Daniel, 2021, On some Ctenarytaina species (Hemiptera, Psylloidea) from Gunung Kinabalu (Malaysia, Sabah), Alpine Entomology 5, pp. 107-113 : 107

Ctenarytaina smetanai sp. nov.

Figs 3 , 8 , 9 , 18-20 , 23 , 24

Ctenarytaina daleae Burckhardt: Burckhardt et al. (2020: 44), p.p., misidentification [description and figures ♀, key]

Type locality.

Malaysia, Sabah, Ranau, Gunung Kinabalu, below Layang Layang, 2600 m.

Material examined.

Holotype ♂. Malaysia: Sabah: Ranau, Gunung Kinabalu, below Layang Layang , 2600 m, 2-8.v.1987, interception trap (A. Smetana) ( MHNG, slide mounted).

Paratypes. Malaysia, 1 ♀, Sabah, Ranau, Gunung Kinabalu, same as holotype (dry mounted) ; 1 ♀, same but 2600 m, 1.v.1987, Syzygium punctilimbum (D. Burckhardt & I. Löbl) #8737 (MNHG, slide mounted); 1 ♀, same but Gunung Kinabalu, 6.0195°N, 116.5385°E, 1700 m, 22.iii.1983 (S. Nagai) #Pal-83/46 ( MHNG, dry mounted).

Diagnosis.

Genal processes 0.5 times as long as vertex along mid-line, irregularly rounded anteriorly. Forewing oblong oval, widest in the middle, 1.9-2.8 times as long as broad, narrowly rounded apically; vein C+Sc mostly straight, weakly concave in proximal third, cell c+sc narrow. Surface spinules present in all cells, forming cellular pattern; in cell r2 above bifurcation of vein M, the cells are irregularly hexagonal consisting of one row of spinules. No extra pore fields developed on abdominal intersegmental membrane. Basal segment trapezoidal, hind margin with subapical angle bearing 5 short peg setae; apical segment 0.2-0.3 times as long as basal segment. Paramere very long and slender. Distal portion of aedeagus slender, weakly inflated apically. Female terminalia cuneate; dorsal margin of proctiger angularly concave at caudal end of circumanal ring, from there to pointed apex weakly convex, smooth.

Description.

Adult. Colouration. Head and thorax dark reddish brown to almost black. Genal processes lighter than vertex, ochreous to brown. Antennal segments 1 and 2 light brown, segments 3-5 and basal third of segment 6 yellow to ochreous, apical two thirds of segment 6 and segments 7-10 dark brown to almost black. Mesoscutum with a broader median and two narrower submedian reddish brown longitudinal stripes. Fore and mid legs brown, tarsi and hind legs, including metacoxae, dirty yellowish. Forewings amber-coloured or light brown; veins concolourous with membrane. Hindwings whitish. Abdomen reddish brown to almost black dorsally, black ventrally; male and female terminalia light brown.

Structure.

Conforming to the generic description of Burckhardt et al. (2020). Body length ♂ 1.9 mm, ♀ 2.0-2.2 mm (1 ♂, 2 ♀). Head deflexed 45° from longitudinal axis of body. Vertex rhomboidal, concave at base; preocular sclerite forming small tubercule; genal processes 0.5 times as long as vertex along mid-line, irregularly rounded anteriorly, well separated medially; eyes moderately ‘stalked’ (Fig. 3 ). Antenna 0.9-1.1 times as long as head width. Metatibia 0.5 times as long as head width, weakly widening to apex, with 5 irregularly spaced apical spurs. Forewing (Fig. 8 ) oblong oval, widest in the middle, 2.3-2.4 times as long as head width, 1.9-2.8 times as long as broad, narrowly rounded apically; pterostigma, at base narrower than adjacent part of cell r1, regularly narrowing to apex, ending at apical third of wing; vein C+Sc mostly straight, weakly concave in proximal third, cell c+sc narrow; vein Rs almost straight, vein M long, with short, weakly diverging branches, vein Cu1a relatively straight, reaching the wing margin distinctly distal to bifurcation of vein M. Surface spinules present in all cells, forming cellular pattern; in cell r2 above bifurcation of vein M, the cells are irregularly hexagonal consisting of one row of spinules (Fig. 9 ). No extra pore fields developed on abdominal intersegmental membrane. Male terminalia as in Figs 18-20 . Proctiger 0.7 times as long as head width; basal segment, in profile, trapezoidal; irregularly beset with setae along anterior and posterior margins, hind margin with subapical angle bearing 5 short peg setae; apical segment tubular, 0.3 times as long as basal segment. Subgenital plate, in profile, elongate, with wavy dorsal margin; sparsely beset with short setae. Paramere, in profile, very long and slender, slightly narrowed in apical third, narrowly rounded apically; inner face with moderately long bristles in apical third and with two rows of bristles in basal two thirds. Distal portion of aedeagus slender, weakly inflated apically; sclerotised end tube of ductus ejaculatorius small, relatively straight. Female terminalia as in Fig. 23 . Proctiger 1.1 times as long as head width, 2.9 times as long as circumanal ring, cuneate; dorsal margin of proctiger angularly concave at caudal end of circumanal ring, from there to pointed apex weakly convex, smooth; weakly beset with short setae, with a longitudinal lateral row of long setae in apical third and 2-3 longitudinal rows of peg setae near ventral margin in apical half. Subgenital plate 0.7 times as long as proctiger, in profile, evenly narrowing to pointed apex. Valvulae dorsalis and ventralis curved (Fig. 24 ).

Measurements in mm (1 ♂, 1 ♀). Head width 0.62-0.72; antenna length 0.64-0.66; forewing length 1.46-1.68; length of male proctiger 0.46; paramere length 0.44; length of distal portion of aedeagus 0.20; female proctiger length 0.82.

Fifth instar immature unknown.

Etymology.

Named after the late A. Smetana, Ottawa, eminent staphylinid specialist and collector of the holotype.

Distribution.

Malaysia: Sabah, probably endemic to Mount Kinabalu.

Host plant, biology and habitat.

One female was swept from Syzygium punctilimbum (Merr.) Merr. & L.M.Perry ( Myrtaceae), a possible host, in moss forest. One male and one female were collected in an interception trap and one female was taken by sweeping vegetation.

Comments.

Ctenarytaina smetanai sp. nov. differs from other congeners in the basal segment of the male proctiger which is trapezoidal and bears 5 short peg setae on the subapical angle of hind margin (Fig. 18 ).

Figures

Figures 1 - 3. Ctenarytaina spp., head, in dorsal view. 1. C. daleae; 2. C. lienhardi sp. nov.; 3. C. smetanai sp. nov.

Figures 4 - 9. Ctenarytaina spp. 4, 6, 8. Forewing; 5, 7, 9. Surface spinules in cell r 2 above bifurcation of vein M. 4, 5. C. daleae; 6, 7. C. lienhardi sp. nov.; 8, 9. C. smetanai sp. nov.

Figures 10 - 24. Ctenarytaina spp., terminalia. 10, 15, 18. Male terminalia, in profile; 11, 16, 19. Distal portion of aedeagus; 12, 17, 20. Inner face of paramere; 13, 21, 23. Female terminalia, in profile; 14, 22, 24. Dorsal and ventral valvulae. 10 - 14 C. daleae; 15 - 17, 21, 22. C. lienhardi sp. nov.; 18 - 20, 23, 24. C. smetanai sp. nov.