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.