Ctenarytaina lienhardi, Burckhardt, 2021

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

Ctenarytaina lienhardi sp. nov.

Figs 2 , 6 , 7 , 15-17 , 21 , 22

Type locality.

Malaysia, Sabah, Ranau, Gunung Kinabalu, 1750-1800 m.

Material examined.

Holotype ♂, Malaysia: Sabah: Ranau, Gunung Kinabalu , 1750-1800 m, 22.iii.1983 (C. Lienhard) #Pal-83/47 ( MHNG, dry mounted).

Paratypes: Malaysia: 1 ♂, 2 ♀, same data as holotype ; 1 ♀, same but, 1750 m, 27.iv.1987, Tristaniopsis (D. Burckhardt and I. Löbl) #8722; 1 ♀, same but, 1750-1850 m, 20.iii.1983 (C. Lienhard) #Pal-83/34 ( MHNG, NHMB, dry and slide mounted).

Diagnosis.

Genal processes 0.3 times as long as vertex along mid-line, irregularly rounded anteriorly. Forewing oblong oval, widest in the middle, 2.3-2.5 times as long as broad, narrowly rounded apically; vein C+Sc mostly straight, 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 or two indistinct rows of spinules. Extra pore fields developed on abdominal intersegmental membrane. Basal segment of proctiger weakly curved posteriorly, hind margin with a row of stout setae; apical segment 0.2 times as long as basal segment. Paramere weakly cuneate; inner face densely beset with long bristles. Distal portion of aedeagus slender in basal half, weakly inflated in apical half. Female terminalia cuneate; proctiger blade-shaped distal to circumanal ring, smooth dorsally, blunt apically.

Description.

Adult. Colouration. Head and thorax light reddish brown. Vertex with dark brown dot in the middle of either half; genal processes dark brown at base, yellow apically. Antenna light orange brown at base, getting gradually darker from segment 6 to apex which is dark brown or black. Pronotum with each two submedian dark dots and mesopraescutum with each one submedian dark dot along fore margin on either side. Legs yellow; profemora light greyish brown. Forewings light ochreous or amber-coloured, slightly lighter along fore margin; veins concolourous with membrane. Abdomen yellow or orange; base of female proctiger light brown. Younger specimens with less extended dark colour.

Structure.

Conforming to the generic description of Burckhardt et al. (2020). Body length ♂ 2.0 mm, ♀ 2.4 mm (1 ♂, 1 ♀). Head deflexed 45° from longitudinal axis of body. Vertex rhomboidal, weakly concave at base; preocular sclerite forming small tubercule; genal processes 0.3 times as long as vertex along mid-line, irregularly rounded anteriorly, contiguous medially; eyes weakly ‘stalked’ (Fig. 2 ). Antenna 0.8 times as long as head width. Metatibia 0.5-0.6 times as long as head width, weakly widening to apex, with 5 irregularly spaced apical spurs. Forewing (Fig. 6 ) oblong oval, widest in the middle, 2.3-2.5 times as long as head width, 2.5-2.6 times as long as broad, narrowly rounded apically; pterostigma, at base wider than adjacent part of cell r1, regularly narrowing to apex, ending at apical quarter of wing; vein C+Sc mostly straight, cell c+sc narrow; vein Rs almost straight, vein M long, with short, weakly diverging branches, vein Cu1a relatively straight, reaching the wing margin at 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 or two rows of surface spinules (Fig. 7 ). Extra pore fields present on abdominal intersegmental membrane. Male terminalia as in Figs 15-17 . Proctiger 0.5 times as long as head width; basal segment, in profile, weakly curved posteriorly; irregularly beset with fine setae, bearing a row of short bristles along hind margin; apical segment tubular, 0.2 times as long as basal segment. Subgenital plate, in profile, triangular, slightly elongate, with weakly concave dorsal margin; sparsely beset with short setae. Paramere, in profile, weakly cuneate, relatively straight, narrowly rounded apically; inner face densely beset with long bristles. Distal portion of aedeagus slender in basal half, weakly inflated in apical half; sclerotised end tube of ductus ejaculatorius small, almost straight. Female terminalia as in Fig. 21 . Proctiger 1.0 times as long as head width, 2.7-2.8 times as long as circumanal ring, cuneate; dorsal margin of proctiger concave, blade-shaped distal to circumanal ring, smooth dorsally, blunt apically; sparsely beset with short setae, with a longitudinal lateral row of slightly longer setae in apical half and 3 longitudinal rows of peg setae near ventral margin in apical half. Subgenital plate 0.7-0.8 times as long as proctiger, in profile, forming narrow process in apical half, pointed apically. Valvulae dorsalis and ventralis weakly curved (Fig. 22 ); valvula lateralis narrowly rounded apically.

Measurements in mm (1 ♂, 2 ♀). Head width 0.64-0.74; antenna length 0.60; forewing length 1.54-1.84; length of male proctiger 0.38; paramere length 0.28; length of distal portion of aedeagus 0.16; female proctiger length 0.64-0.72.

Fifth instar immature unknown.

Etymology.

Named after C. Lienhard, Genève, eminent specialist of Psocodea and collector of most of the type series.

Distribution.

Malaysia: Sabah, probably endemic to Mount Kinabalu.

Host plant, biology and habitat.

Unknown; a single female was collected on Tristaniopsis ( Myrtaceae).

Comments.

Ctenarytaina lienhardi sp. nov. shares with C. daleae , C. insularis and C. taylori the narrow forewings and the posteriorly weakly curved male proctiger. It differs from the two former species in the blade-shaped, dorsally smooth female proctiger and from the latter in the lack of a dark brown basal patch on the forewing.

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.