Himaloconnus klapperichianus okinawanus, Jałoszyński, 2020

Jałoszyński, Paweł, 2020, Himaloconnus Franz and Nogunius gen. n. of Japan (Coleoptera: Staphylinidae Scydmaeninae), Zootaxa 4822 (3), pp. 334-360 : 342-345

Himaloconnus klapperichianus okinawanus ssp. n.

( Figs 3 , 8–9 , 40–43)

Type material. Holotype: JAPAN (Okinawa Pref.): ♂, three labels: “ Mt. Nishimedake (No. 4) / (epiphytic fern: soil) / Kunigami-son, Okinawa Is. / [ Ryukyus : JAPAN] / 6.vii.2001, S. Karasawa ” [white, printed], “Epiphytic Fern Survey / Scydmaenidae / Euconnus sp. 5 / P. Jałoszyński det., 2005” [orange, printed], “ HIMALOCONNUS / klapperichianus okinawanus m. / HOLOTYPUS, P. JAŁOSZYŃSKI, 2020” [red, printed] ( NSMT) . Paratypes (4 exx.): 1 ♀, same data as for holotype; 2 ♂♂, “ OKINAWA;JAPAN / Is. Okinawa / Yonahadake / 1. IV. 1999 / Tatsuya Kan leg.”; 1 ♂, “[Yanbaru: OKINAWA] / NNW of Mt. Yonaha- / dake (alt. 320m) / 20. X. 1987 / Y. Nishikawa leg. / (in leaf litter)” (paratypes in cPJ, EUMJ, NSMT) .

Diagnosis. BL of male <1 mm; eyes in males in dorsal view much shorter than tempora, each composed of small ommatidia ( Fig. 9 ).

Description. Body of male ( Fig. 3 ) strongly convex, uniformly light brown, covered with setae distinctly lighter than cuticle; BL 0.83–0.89 mm (mean 0.85 mm).

Head ( Figs 8–9 ) broadest at eyes, HL 0.15–0.16 mm (mean 0.16 mm), HW 0.15–0.18 mm (mean 0.16 mm); tempora in dorsal view distinctly longer than eyes; vertex and frons confluent, together weakly convex; each eye ( Fig. 9 ) large, strongly convex, bean-shaped, with distinct posteromedian emargination, composed of 23 small facets. Punctures on vertex fine, inconspicuous; setae short, sparse and suberect; tempora and posterior margin of vertex densely covered with long and thick bristles. Antennae slender, AnL 0.35–0.38 mm (mean 0.37 mm), antennomeres I and II each strongly elongate, III–VIII each about as long as broad, IX and X distinctly transverse, XI indistinctly narrower than X, slightly elongate.

FIGURES 27–43. Aedeagus in ventral (27, 29, 31–36, 38, 40, 42) and lateral (28, 30, 37, 39, 41, 43) views. Himaloconnus klapperichianus yaeyamanus ssp. n. (27–35; showing variability within population inhabiting Ishigaki-jima); H. klapperichianus amamianus ssp. n. (36–39); and H. klapperichianus okinawanus ssp. n. (40–43).

Pronotum subconical with rounded sides, broadest near posterior third, nearly evenly tapering anterad; PL 0.24–0.25 mm (mean 0.25 mm), PW 0.20–0.23 mm (mean 0.22 mm). Anterior margin nearly straight, posterior margin indistinctly bisinuate with weakly convex median third, base lacking pits. Punctures on pronotal disc fine, inconspicuous; setae sparse, moderately long, suberect; sides with sparse, thick and long bristles.

Elytra together oval, broadest indistinctly in front of middle; EL 0.43–0.48 mm (mean 0.45 mm), EW 0.38 mm, EI 1.13–1.27; humeral calli distinct, basal impressions short but well developed; apices separately rounded. Punctures inconspicuous; setae much shorter than those on pronotum, sparse, suberect.

Hind wings long, functional.

Legs moderately long and slender, unmodified.

Aedeagus (Figs 40–43) elongate, AeL 0.13 mm; as in H. klapperichianus yaeyamanus .

Female similar to male, but with distinctly smaller, less convex eyes much shorter than tempora in dorsal view, each composed of only six ommatidia. BL 0.74 mm; HL 0.14 mm, HW 0.15 mm, AnL 0.33 mm; PL 0.20 mm, PW 0.40 mm; EL 0.40 mm, EW 0.33 mm, EI 1.23.

Distribution. Yambaru, i.e., the northern, forested region of Okinawa-jima, central Ryukyu Archipelago, Japan ( Fig. 44 ).

Etymology. Named after Okinawa-jima.

Remarks. Males of Himaloconnus klapperichianus okinawanus have the smallest eyes in relation to tempora among all subspecies of H. klapperichianus ; in dorsal view the eye is clearly shorter than the temple ( Fig. 8 ). Also males of H. klapperichianus klapperichianus have eyes distinctly shorter than tempora and composed of similarly, conspicuously small ommatidia. However, H. klapperichianus klapperichianus is distinctly larger, has a smaller ratio PL/PW (0.95 vs. 1.11–1.19 in H. klapperichianus okinawanus ), and antennae longer in relation to the pronotum (AnL/PL in H. klapperichianus klapperichianus equals 1.70 vs. 1.40–1.58 in H. klapperichianus okinawanus ).

Figures

FIGURE 44. Distribution of Himaloconnus in Japan.

FIGURES 1–3. Dorsal habitus of males. Himaloconnus klapperichianus yaeyamanus ssp. n. (1); H. klapperichianus amami- anus ssp. n. (2); and H. klapperichianus okinawanus ssp. n. (3).

FIGURES 4–9. Head of males in dorsal (4, 6, 8) and lateral (5, 7, 9) view. Himaloconnus klapperichianus yaeyamanus ssp. n. (4–5); H. klapperichianus amamianus ssp. n. (6–7); and H. klapperichianus okinawanus ssp. n. (8–9). Vertical lines to the right of each image show length of eye and length of temple.