Celioinkosa rufoapicalis, Fedorenko, 2021

Fedorenko, D. N., 2021, Notes on the genera Aristopus, Cosmodiscus and Metabacetus (Coleoptera: Carabidae: Pterostichini: Abacetina), with description of three new species from Vietnam, Russian Entomological Journal 30 (4), pp. 413-429 : 425

1. Cosmodiscus platynotus ( Bates, 1873)

Figs 21 , 32–33, 35, 42–43, 52, 60–61.

Bates, 1873: 283 ( Stomonaxus ; Nagasaki); Andrewes, 1920: 447; 1921: 345; 1930: 132; 1933: 341; Straneo, 1938b: 7, 12; 1940: 211–212; Habu, 1981: 47. — dilaticollis Bates, 1892: 351 ( Stomonaxus ; Karin Cheba, Burma).

MATERIAL. Eleven specimens ( SIEE, D. Fedorenko leg.): ♀, Vietnam, Lao Cai Province, Hoang Lien Son Mt. Ridge, env. Phang Xi Pang Mt, Tram Ton , h= 1950–2100 m, 15–30.VII.2007 ; 4♂♂, 4♀♀, Lam Dong Province, Bi Doup-Nui Ba Nature Reserve, env. Long Lanh , 12°10´44´´N / 108°40´44´´E, h= 1400–1600 m, at light, 7–20.IV.2008 or 28.IV–10. V.2009; ♂, ♀, 35 km NW of Bao Loc, Loc Bao env., h= 650 m, 11°50´12´´N / 107°38´25´´E, at light, 17– 22.IV.2012 ; 2♂♂, ♀ ( MPSU), Quang Binh Province, Minh Hoa [=Quy Dat] District, Ke Bang , env. Yen Hop , at light, 17.IV.1999 (S. Kruskop).

DIAGNOSIS. See the respective section for C. rufoapicalis sp.n. below.

REDESCRIPTION. Very slightly different from C. rufoapicalis sp.n. in the following characters: BL 6.3–8.5 mm. Elytra without pale preapical markings ( Fig. 21 ). Head without microsculpture.

Head: Frontal sulci slightly divergent, disappearing on a level with anterior supra-ocular setae. Pronotum barely long- er, PW/PL 1.67–1.76 (1.73, n=7), about as wide as head, PW/ HW 1.96–2.09 (2.01); PB/PA 1.61–1.73 (1.68). Disc convex and smooth; basal sulci more shallow; punctation mostly traceable in basal sulci only.

Elytra barely longer, EL/EW 1.27–1.38 (1.32), EW/PW 1.03–1.11 (1.07). Parascutellar seta present, discal setae missing. USS: 6–1–8, posterior group of US continuous.

Underside: Abdominal sternites IV–VII finely and densely striate along bases at sides, not or less distinctly so medially. Prosternum not beaded.

Legs. Protibia with four latero-apical spines. Mesotibia with four spiniform anterolateral setae, inner setal brush consisting of 6+1 or 7+1 setae; metatibia with 4–5 spiniform setae. Mesotarsomere1 and metatarsomeres 1 and 2 externally sulcate.

Aedeagus ( Figs 42–43 , 52, 60–61 ): median lobe in ventral view narrower in apical than in basal part, with a distinct ventral carina.

Abdominal urites VIII and IX in female as in Figs 32–33, 35.

GEOGRAPHIC DISTRIBUTION. Southern and northeastern India ( Sikkim), Myanmar, Sumatra, Java, Japan. The species is here first reported from Vietnam.

HABITATS AND HABITS. Great majority of the specimens have been taken at lights positioned at the edges of monsoon broad-leaved forests.

COMMENTS. One of totally eight examined specimens from the Bi Doup — Nui Ba Nature Reserve has the elytra lacking parascutellar setigerous pore.

Figures

Figs 19–24. Dorsal habitus: 19 — Aristopus picturatus, ♀ from Anuradhapura env., Sri Lanka; 20 — A. humeratus sp.n., paratype ♂ from env. Pai, Thailand; 21 — Cosmodiscus platynotus, ♀ from the Bi Doup — Nui Ba Nature Reserve; 22 — C. rufoapicalis sp.n., holotype; 23 — C. rufolimbatus, holotype; 24 — C. louwerensi, paratype. Рис. 19–24. Габитус дорЗально: 19 — Aristopus picturatus, ♀ иЗ окр. Анурадхапура, Шри Ланка; 20 — A. humeratus sp.n., паратип ♂ иЗ окр. Паи, Таиланд; 21 — Cosmodiscus platynotus, ♀ иЗ Запов. Бидуп-Нуйба; 22 — C. rufoapicalis sp.n., голотип; 23 — C. rufolimbatus, голотип; 24 — C. louwerensi, паратип.

Figs 38–49. Median lobe of aedeagus: 38–39 — Aristopus humeratus sp.n., paratype ♂ from env. Pai, Thailand; 40–41 — A. picturatus, ♂ from Vilpattu, Sri Lanka; 42–43 — Cosmodiscus platynotus; 44–45 — C. rufoapicalis sp.n., holotype; 46–47 — C. louwerensi, paratype; 48–49 — C. mirei; 38, 40, 42, 44, 46, 48 — left aspect; 39, 41, 43, 45, 47, 49 — right aspect; vc — ventral longitudinal carina. Scale bars: 1 mm. Рис. 38–49. СреднЯЯ долЯ Эдеагуса: 38–39 — Aristopus humeratus sp.n., паратип ♂ иЗ окр. Паи, Таиланд; 40–41 — A. picturatus, ♂ иЗ Вильпатту, Шри Ланка; 42–43 — Cosmodiscus platynotus; 44–45 — C. rufoapicalis sp.n., голотип; 46–47 — C. louwerensi, паратип; 48–49 — C. mirei; 38, 40, 42, 44, 46, 48 — слева; 39, 41, 43, 45, 47, 49 — справа; vc — продольный вентральный киль. Масштаб: 1 мм.

Figs 50–67. Aedeagus: 50, 56–57 — Aristopus humeratus sp.n., paratype ♂ from env. Pai, Thailand; 51, 58–59 — A. picturatus, ♂ from Vilpattu, Sri Lanka; 52, 60–61 — Cosmodiscus platynotus; 53, 64–65 — C. rufoapicalis sp.n., holotype; 54, 62–63 — C. louwerensi, paratype; 55, 66–67 — C. mirei; 50–55 — median lobe, ventral aspect; 56, 58, 60, 62, 64, 66 — right paramere, left aspect; 57, 59, 61, 63, 65, 67 — left paramere, right aspect. Scale bar: 1 mm. Рис. 50–67. Эдеагус: 50, 56–57 — Aristopus humeratus sp.n., паратип ♂ иЗ окр. Паи, Таиланд; 51, 58–59 — A. picturatus, ♂ иЗ Вильпатту, Шри Ланка; 52, 60–61 — Cosmodiscus platynotus; 53, 64–65 — C. rufoapicalis sp.n., голотип; 54, 62–63 — C. louwerensi, паратип; 55, 66–67 — C. mirei; 50–55 — среднЯЯ долЯ вентрально; 56, 58, 60, 62, 64, 66 — праваЯ парамера слева; 57, 59, 61, 63, 65, 67 — леваЯ парамера справа. Масштаб: 1 мм.