Neocollyris (s. str.) hirsuta, Anichtchenko & Wiesner, 2022

Anichtchenko, Alexander & Wiesner, Jürgen, 2022, Description of two new Neocollyris W. Horn, 1901 species from Vietnam (Coleoptera: Cicindelidae), Baltic Journal of Coleopterology 22 (1), pp. 67-73 : 70-72

Neocollyris (s. str.) hirsuta sp. n.

Type material: Holotype, male – “ Vietnam, Nang Pro, Da Nang, | So’n Trà Mt. , IV.2018 ” ( DUBC).

Diagnosis. This new species is similar in body size, color, and dense pubescence to the newly described N. trichocephala sp. n., but N. hirsuta sp. n. can be differentiated by its smooth head. Elytra with dark brown, barely visible but evident sub­ humeral and transversal elytral pattern, while in N. trichocephala sp. n., elytra lack this pattern. Labrum of N. trichocephala sp. n. with thin microsculpture, while in N. hirsuta sp. n. it is smooth. Aedeagus of N. hirsuta sp. n., is larger than in N. trichocephala sp. n. and with apex longer and less downturned.

Description. Body length 12.8 mm in holotype

( Fig. 3 ).

Body color uniformly violet with strong purple luster.

Head ( Figs. 5, 8 ) oblong, HL/HW = 0.82, with thin microsculpture consisting of polygonal meshes, temples protruding and evenly rounded towards base; clypeus with two setae; frons narrow, frontal grooves shallow, almost straight, subparallel in anterior third, slightly divergent in posterior third; eyes moderately protruding; each supra­orbital plate with 2 long setae. Labrum

( Fig. 14 ) relatively short and transverse; unicolored, violet; with microsculpture, consisting of polygonal meshes on the center, and transverse meshes on the sides; with eight long sub marginal setae and seven apical teeth: with three short and wide frontal central teeth with rounded apices, as well as a pair of slightly longer and narrower latero­apical teeth and longer and pointed latero­basal teeth on both sides. Mandibles black with violet luster on the base. Palpi entirely black, maxillary with the shape of isosceles triangle

( Fig. 11 ) and labial with the shape of right triangle

( Fig. 12 ). Antennae relatively long; antennomere 3 the longest; scape and pedicel dark violet, antennomeres 3–4 violet, with yellow apices; antennomere 5 yellow, with violet basal third; antennomeres 6–11 brown. Scape with a single apical seta, antennomeres 3–4 glabrous except for 6 very short setae on ventral ridge, apical half of antennomere 5 and antennomeres 6–11 densely pubescent with very short yellow setae.

Pronotum ( Figs 3 , 5 ) with a shallow collar, without anterior hump, moderately long, LP/WP = 1.83, distinctly expanded in basal third; disc almost flat in lateral view, with shallow, transverse wrinkles in anterior half, relatively densely and unevenly punctured by setiferous pores, bearing very long white hairs; punctures on base of pronotum twice as large and denser as on disc; anterior sulcus relatively wide and shallow, while posterior one more narrow and deeper. Prosternum, pro­episternum, mesothorax and mesosternum densely pubescent with long, white hairs.

Elytra ( Fig. 3 ) moderately long, EL/EW = 3.33, parallel sided, metallic violet with light purple luster; elytral maculation dark brown, barely visible, consisting of sub­ humeral elongate spot, and transversal middle spot; covered with isodiametric microsculpture; disc with numerous regularly distributed, rounded, blue pits, slightly elongate and smaller in apical fifth; almost all pits with very small setiferous pore on anterior margin, bearing extremely long white hairs; suture moderately protruding. Sutural tooth on apices

Anichtchenko A., Wiesner J.

of elytra obtuse, not prominent, exterior angle of elytra obtuse and angulate. Scutellum dark blue.

Abdominal sternites black with violet luster, with few thin and long pale setae on each side. All coxae, as well as fore­ and mid­trochanters black.

Profemora dark violet, ventrally dark brown with violet reflections. Meso­ and metafemora dark brown with violet reflections, dorsally and apically violet. All tibiae dark violet. Pro­ and mesotarsi uniformly violet; metatarsi light yellow, with two apical tarsomeres violet ( Fig. 3 ).

Aedeagus ( Fig. 17 ) relatively long, 2.0– 2.15 mm; with a wide, gradually curved basal bulb; ventral side of median lobe straight; apical part relatively long, strongly downturned, apex narrow and acute; internal sack with short and thick flagellum, and with thin undulate sclerite at base of flagellum.

Distribution. Vietnam: province Da Nang.

Etymology. The name of the new species is derived from the Latin “hirsuta ” – roughly hairy, because of unusually long pubescence of pronotum and elytra.

Figures

Figs. 1–3. Habitus of Neocollyris (s. str.) spp.: 1 – N. trichocephalus sp. n., holotype; 2 – idem, paratype. 3 – N. hirsutus sp. n., Holotype. Scale line = 1 sm.

Figs. 4–8. Neocollyris (s. str.) spp.: 4–5 – head, pronotum, and basal part of elytra, right lateral view; 6–8 – head, dorsal view. 4, 6, 7 – N. trichocephalus sp. n.; 5, 8 – N. hirsutus sp. n., Holotype. Scale line = 1 mm.

Figs 13–14. Head in frontal view and labrum of Neocollyris (s.str.) spp. 13 – N. trichocephala sp. n.; 14 – N. hirsuta sp. n. Scale line = 1 mm.

Figs. 9–12. Palpi of Neocollyris (s. str.) spp. 9 – maxillary palpus of N. trichocephalus sp. n.; 10 – labial palpus of N. trichocephalus sp. n.; 11 – maxillary palpus of N. hirsutus sp. n.; 12 – labial palpus of N. hirsutus sp. n. Scale line = 1 mm.

Figs. 15–17. Aedeagus of Neocollyris (s. str.) spp.: 15–16 – N. trichocephala sp. n., Holotype and paratype; 17 – N. hirsuta sp. n., Holotype. Scale line = 1 mm.