Kanigara nebulosa, Ban, 2022

Ban, Teruaki, 2022, ThegenusKanigara Distant (Heteroptera: Lygaeoidea: Rhyparochromidae) from Malay Peninsula and Thailand, with description of a new species, Raffles Bulletin of Zoology 70, pp. 22-29 : 24

Ban: Kanigara from Malay Peninsula and Thailand

Pronotum ( Fig. 1A ) smooth, 1.4 times as wide as its length, trapezoidal, without setae and transverse impression; anterior margin of pronotum concave, lacking collar, covered with rough punctures; disc of anterior half of pronotum covered with fine punctures; posterior half of pronotum covered with rough punctures; posterior margin of pronotum concave; venter of prothorax, mesothorax, and metathorax covered with distinct punctures. Scutellum triangular ( Fig. 1A ), 1.2 times as long as its width, without trifurcate carina; punctures on apical and lateral area of scutellum larger than punctures on basal area of scutellum and surface of pronotum. Hemelytra ( Fig. 1A ) exceeding apex of abdomen; corium covered sparsely with erect setae and punctures; claval suture 1.7 times longer than apical margin of corium. Each femur slender, with 3 stiff setae on apex and 6 stiff setae ventrally on femora; meso- and metafemora each with 6 needle-shaped spines; inner surface of protibia with row of needle-shaped spines; meso- and metatibia covered with needle-shaped spines.

Abdominal sternum densely covered with decumbent setae.

Genital structures of paratypes: Pygophore ( Fig. 2A ) globose, covered with relatively dense erect setae; dorsal pygophore opening nearly rectangle-shaped, gradually broadened to about basal one-third, then sharply narrowed by a pair of rounded protrusions; posterior margin of pygophore and cup-like sclerite fused; anterior margin of cup-like sclerite almost straight. Paramere ( Fig. 2B–E ) sparsely covered with erect setae, expanded at midpoint. Phallus as in Fig. 2F, G ; phallosoma without processes; sperm reservoir as in Fig. 2H .

Female (paratypes): Female resembles male in general appearance. Ovipositor bisecting sternites VI to VII. Spermatheca (paratype) as in Fig. 2I .

Measurements. Holotype [minimum–maximum]. Body length 4.0 (3.96–5.1); body height between coxae and dorsum 1.25 (1.25–1.52); head length 0.55 (0.48–0.64); head width across eyes 0.85 (0.8–1.0); interocular space 0.28 (0.25–0.34); eye length 0.25 (0.24–0.3); eye width 0.24 (0.22–0.29); length of antennal segment I–IV respectively 0.45 (0.45–0.6), 0.85 (0.79–0.96), 0.85 (0.83–0.9), 0.83 (0.75–0.95); length of rostral segment I–IV respectively 0.43 (0.42–0.5), 0.45 (0.43–0.53), 0.25 (0.23–0.28), 0.2 (0.19–0.26); medial pronotal length 1.1 (1.05–1.35); width of anterior margin of pronotum 0.85 (0.8–1.0); maximum width of pronotum 1.75 (1.5–1.9); scutellal length 1.1 (1.05–1.45); scutellal width 0.95 (0.95–1.15); hemelytral length 2.7 (2.7–3.36); maximum width across hemelytra 1.6 (1.6–1.95); corium length 2.0 (2.0–2.55); length of claval commissure 0.35 (0.27–0.4); length of ovipositor (0.9–1.04).

Distribution. Malay Peninsula (Johor).

Etymology. The species epithet “ nebulosa ” (meaning nebulous) is a Latin adjective referring to the characteristic longitudinal spot on the humeral angles of the pronotum.

Remarks. This new species resembles K. oculata Scudder , K. punctata Scudder , and K. flavomarginata Distant in general appearance, although it can be distinguished from these species by the following combination of characters: body length less than 5.5 mm (in K. oculata body length more than 6.5 mm); distance between ocelli subequal to eye width (in K. punctata and K. flavomarginata distance between ocelli 1.5 times wider than eye width); lateral area of anterior lobe of pronotum with 0.1 mm wide indistinct yellow line (in K. flavomarginata lateral area of anterior lobe of pronotum with distinct yellow line); humeral angle of pronotum with diffuse pale yellow colouration (vs. humeral angle of pronotum with distinct yellow line); maximum width of pronotum less than 2.0 mm (in K. oculata body length more than 2.0 mm); scutellum with apical and lateral punctures distinctly larger than punctures on basal area and pronotum (in K. flavomarginata scutellum with apical and lateral punctures same size as punctures on basal area and pronotum); anterior margin of cup-like sclerite almost

Figures

Fig. 1. Kanigara nebulosa, new species. A, B, holotype, male (A, dorsal view; B, ventral view); C, D, paratype, female (C, dorsal view; D, ventral view). Scale bars = 1.0 mm.

Fig. 2. Male and female genitalia of Kanigara nebulosa, new species. A, pygophore, dorsal view; B–E, right paramere, four different aspects; F, G, phallus (F, dorsal view; G, lateral view); H, sperm reservoir; I, spermatheca. Scale bars = 0.1 mm.