Odacantha (Odacantha) hagai Nemoto, 1989

Makarov, K. V., Sundukov, Yu. N. & Korepanov, M. K., 2019, Review of the genus Odacantha (Coleoptera: Carabidae) of the Russian Far East, Far Eastern Entomologist 380, pp. 8-19 : 15-18

Odacantha (Odacantha) hagai Nemoto, 1989

Figs 17–19 , 38–43

Odacantha hagai Nemoto, 1989: 101–102 ; type locality: “ Lake Kasumigaura , Ibaraki

Pref.”, Honshu, Japan.

MATERIAL. Russia: Primorskiy krai: Khasansky Distr., mouth of Kedrovaya River ,

22–24.VIII 2018, M. Korepanov, K. Makarov, A. Matalin & Yu. Sundukov leg. [18 ex., ZIN,

MPU, FEB]; Khasansky Distr. , 6 km E of Khasan Railway Station, 1–9.VII 1990, A. Tilli leg. [8 ex, cAT]; Khasansky Distr. , Ryazanovka, 5.IX 1985, Kabakov leg. [1 ex., ZIN];

Anuchinsky Distr. , Chernyshevka environs, food meadow, 14.VII 1995, R. Dudko leg. [1 ex.,

ISEA [; Chernigovsky Distr. , 10 km SSW of Sibircevo, Ilistaya River, 44,107°N, 132,397°E,

29-30. V 2015 , R. Dudko leg. [1 ex., ISEA].

TAXONOMIC REMARKS. Like the previous species, O. hagai shows a variable chaetotaxy on the head and elytra. For example, of 18 specimens studied, 1 individual has only 1 left additional seta on the head, 2 beetles each with only 1 right additional seta, 1

specimen shows an additional posterior right seta, 2 specimens have no additional posterior left seta, in 1 specimen additional posterior setae are absent, but 1 has 2 pairs of additional posterior setae. The number of discal pores on the elytra varies: in the 3rd interval from 1 to

5 (usually 3–4), in the 5th interval from 0 to 2 (more often 1), in the 7th from 0 to 3 (usually

1–2).

The length of the body is 4.7–5.7 mm (average 5.3 mm, n=17).

DISTRIBUTION. Russia: Primorskiy krai (new record); Japan (Hokkaido, Honshu)

(Nemoto, 1989; Kasahara, 1992).

BIOLOGY. According the literature record (Nemoto, 1989; Kasahara, 1992) and our collections, the lifestyle is similar to that of O. puziloi ( Figs 44, 45). However, at the end of

August, when the larvae of the latter species were not uncommon, O. hagai was represented by young, often weakly sclerotized adults. This suggests that the development in O. hagai is completed about 2 –3 weeks earlier than that of O. puziloi .

female, dorsal view; 41 – female, ventral view; 42 – aedeagus; 43 – parameres.

sansky Distr., 6 km east of Khasan Railway Station, photo by A. Tilli; 45 – Khasansky Distr.,

mouth of Kedrovaya River, photo by A. Matalin); 46, 47 – O. puziloi aino subsp. n. (46 –

Veslovskii Peninsula, 1.5 km north of Cape Veslo, photo by K. Makarov; 47 – swamp between Rikorda River and Belozerskaya River, photo by Yu. Sundukov).

1 Smaller, length 4.7–5.7 mm (average 5.25 mm). Pronotum shorter (1.25 times as long as wide), with rounded sides and arcuate grooves ( Figs 38, 40 ). Prothorax from below in front of coxae smooth, without punctation (with the exception of a number of points along front edge) ( Fig. 18 ); proepisterna with only a few points in basal part and near lateral grooves ( Fig. 18 ). Elytra without microsculpture, glossy ( Fig. 19 ). Head and pronotum black, without metallic tint; labrum brown; head and prothorax below black, mesothorax, metathorax and abdomen are entirely red ( Figs 39, 41 ). Aedeagus rather clearly curved, relatively slender and long ( Fig. 42 ) .................... O. hagai Nemoto, 1989

– Larger, length 5.6–6.8 mm (average 6.26 mm). Pronotum elongated (about 1.4 times as long as wide), cylindrical, its lateral grooves almost parallel ( Figs 6, 8, 10, 11 ). Prothorax from below and proepisterna with large coarse points ( Figs 9 , 12 ). Elytra with distinct microsculpture ( Figs 14, 16 ). Head and pronotum black, with weak brass tint; labrum black; underside completely black, only last visible sternite red-brown ( Figs 7, 9 ). Aedeagus straight, relatively stout and short ( Figs 20–27 ) ........... O. puziloi Solsky, 1875

2 Elytral striae weak, finely punctured, not reaching the apex ( Fig. 13 ); left paramere narrow ( Figs 28–33 ) .......................................................... O. puziloi puziloi Solsky, 1875

– Elytral striae strongly developed, usually reaching the apex; left paramere wider ( Figs 34, 35 ) ....................................................... O. puziloi aino Makarov et Sundukov, subsp. n.

Figures

Figs 12–19. Morphological details of Odacantha spp.: 12–14 – O. puziloi puziloi; 15, 16

Figs 38–43. Odacantha hagai: 38 – male, dorsal view; 39 – male, ventral view; 40 –

Figs 44–47. Habitats: 44, 45 – both Odacantha puziloi puziloi and O. hagai (44 – Kha-

Figs 6–11. Habitus of Odacantha puziloi: 6–9 – O. puziloi puziloi; 10–11 – O. puziloi

Figs 20–35. Male genitalia of Odacantha spp.: 20–25, 28–33 – O. puziloi puziloi (20, 28