Holcoferonia tenuimargo Fedorenko, 2022

Fedorenko, D. N., 2022, Notes on some Abacetina (Coleoptera: Carabidae: Pterostichini), with descriptions of a new genus and new species, Russian Entomological Journal 31 (1), pp. 15-26 : 26

Holcoferonia tenuimargo Fedorenko , sp.n.

Figs 77, 110–111, 115, 122–123.

MATERIAL. Holotype ♂ ( ZMMU), labelled: ‘S[outhern] Vietnam, N[orthern part of] Dongnai [Dong Nai] Pr.[ovince]/ Nam Cat Tien Nat[ional]. Park/ Exped[ition]. Russ[ian].-Vietnamese/ Tropical Centre/ at light HQL450 19./ leg. D.Fedorenko. VI.2005 ’. Paratypes, 3♂♂, 3♀♀ ( SIEE),with same labels,except for17–25.V.or5.VI.,or 11.VI.2005 .

DIAGNOSIS. Smaller species, with pronotal lateral bead barely thicker basally than apically, pronotum not or indistinctly punctate outside basal sulci, entire abdominal sternite VII punctate, and aedeagus distinctive.

REDESCRIPTION. Hardly different from the previous species in the following points: BL 3.1–3.6 mm. Body (Fig. 77) more reddish, elytral pale regions more extensive. Elytra without microsculpture and thence without opalescent luster. Head slightly wider so that pronotum only two thirds wider than head, PW/HW 1.64–1.66 (1.65). Pronotum otherwise similar in shape, PW/PL 1.30–1.36 (1.33, n=5), PLw/PL 0.52–0.57 (0.54), with apex wider, PB/PA 1.40–1.47 (1.43). Both lateral bead and lateral groove thin. Elytra: EL/EW 1.48–1.51 (1.49), 1.15–1.19 (1.17).

Aedeagus (Figs 110–111, 115, 122–123): median lobe with transverse basal plication long, running on second fourth, and apex slightly upturned at tip in lateral view. Left paramere wide. Internal sac with a large sclerotized patch in second fourth.

NAME. Refers to the narrow lateral bead of the pronotum.

GEOGRAPHIC DISTRIBUTION. Only known from the type locality.

HABITATS AND HABITS. As for H. crassimargo , except that the adults have been collected in a different season, early wet instead of early dry, which suggests that H. crassimargo and H. tenuimargo sp.n. are sympatric yet allochronous species.

Acknowledgements. I am very grateful to Dr. Max Barclay ( NHML), Dr.Boris Kataev ( ZISP), and Dr.Kirill Makarov ( MPSU) for the loan of material under their care. This study was funded by the Presidium of the Russian academy of sciences, Program No.41 “Biodiversity of natural systems and biological resources of Russia ”.