Atopida tuhua, Kiałka & Ruta, 2022

Kiałka, Agata & Ruta, Rafał, 2022, Revision of Atopida White, 1846 (Coleoptera: Scirtoidea: Scirtidae), Zootaxa 5174 (4), pp. 401-443 : 432-433

publication ID 10.11646/zootaxa.5174.4.6

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Atopida tuhua

sp. nov.

Atopida tuhua sp. nov.

( Figs 2I–J View FIGURE 2 , 5U–V View FIGURE 5 , 8M View FIGURE 8 , 10L View FIGURE 10 , 15D View FIGURE 15 , 17P View FIGURE 17 )

Type material. Holotype, male ( NZAC): “ NEW ZEALAND WD \ Mt Tuhua , 1067m \ E side of \ L. Kaniere \ 20 Nov 1984 ”, “ B. A. Holloway \ Moss and \ lichen 84/75”; paratypes, 7 exx. ( NZAC): same data as holotype.

Diagnosis. Body small to moderately big (TL 3.1–3.8 mm), dark brown, head, pronotum, and scutellar shield slightly darker than elytra. Sides of elytra crenulate. Certain identification possible on the basis of genital characters: parameroids narrow, pointed at apices, parameres wide, apices obliquely truncate; bursal sclerite large, in dorsal view with well-marked sharp lateral processes and central tubercle.

Description. Male. Body elongated, small to moderately big (TL 3.4–3.8 mm), moderately convex, surface of head and pronotum uneven. Body dark brown, head, pronotum, and scutellar shield slightly darker than elytra, elytra sometimes darkened along suture. Punctation on head and pronotum granulate, strong and dense, punctures doughnut-shaped, touching each other, with the exception of basal portion of pronotum where the punctures are more sparse, with shining interspaces; punctation on elytra simple, punctures separated by 0.5× diameter of a puncture. Body covered with moderately long, erect setae. Supraantennal ridges well-marked, elevated, but not forming subtriangular flaps. Pronotum widest in anterior 1/3 of its length, lateral carinae crenulate, anterolateral angles distinctly produced, posterolateral angles pointed. Elytra without carinae, humeri well-marked. Ventrite 5 with regularly rounded apex. Penis (L 0.70 mm, W 0.35 mm) moderately elongated, with explanate lateral lobes, trigonium very narrow, curved laterally, apex rounded, distinctly shorter than parameroids; parameroids elongated, apices pointed, narrowly triangular, covered with numerous punctures, inner edge denticulate; pala triangular, shorter than parameroids. Tegmen (L 0.58 mm, W 0.45 mm) moderately wide, parameres relatively wide, subrectangular, obliquely truncate at apices, covered with punctures and very few delicate setae near outer edge.

Female. Body small to moderately big (TL 3.1–3.6 mm), brachypterous. Supraantennal ridges well-marked, elevated. Pronotum more transverse than in males, disc with sparser punctation. Sides of elytra more rounded. Ventrite 5 rounded, apex truncate. Lateral portions of ventrites 3 and 4 with small, slightly oblique setal patches, ventrite 5 with two very small circular patches. Bursal sclerite big (L 0.46 mm, W 0.24 mm), elongated, consisting of two interconnected plate-like sclerites that are fused, anterior portion triangular, central part with a single tubercle, posterior portion rounded, in dorsal view with two subtriangular denticles on lateral margins, in lateral view these structures resemble hooks.

Measurements and ratios. Males (n = 4) TL 3.40–3.75 mm (3.59 mm), PL 0.60–0.65 mm (0.63 mm), PW 0.95–1.10 mm (1.03 mm), EL 2.80–3.00 mm (2.92 mm), EW 1.65–1.70 mm (1.69 mm), TL/EW 2.06–2.21 (2.13), PW/PL 1.58–1.69 (1.64), EL/EW 1.70–1.76 (1.73), EL/PL 4.54–4.89 (4.68), EW/PW 1.55–1.74 (1.65). Females (n = 3) TL 3.14–3.60 mm (3.30 mm), PL 0.50–0.70 mm (0.58 mm), PW 1.05–1.15 mm (1.07 mm), EL 2.60–2.95 mm (2.72 mm), EW 1.55–1.85 mm (1.72 mm), TL/EW 1.80–2.03 (1.93), PW/PL 1.64–2.00 (1.85), EL/EW 1.49–1.68 (1.59), EL/PL 4.21–5.20 (4.71), EW/PW 1.55–1.67 (1.61).

Distribution. Known only from the type locality in Westland area of South Island ( Fig. 18L View FIGURE 18 ).

Etymology. From type locality, Mt. Tuhua.


New Zealand Arthropod Collection













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