Canthophorus niveimarginatus Scott, 1874 (Figures 3 L, 5 D, 6 V, 6 W, 7 T, 7 U, 8 V, 8 W, 11 D)

Canthophorus niveimarginatus Scott 1874: 289, 295 [syntypes: Japan] .

Material examined

Russia: Krasnoyarsk Terr.: Ermakovskiy Distr., Usynskiy maral sovkhoz, 22,23. VI.1979 (Korotyaev), 1J, 1♀ (ZISP) ; Altay Republic: Kosh-Agach Settlm ., 23.VI.1964 (M. Kozlov), 1♀ (ZISP) ; Republic of Tyva: Boyarovka Settlm . nr Kaa-khem Settlm., 23.VII.1949 (Perevozchikova), 1♀ (ZISP) ; Kyzyl, 2.VIII.1949 [collector unknown], 1J (ZISP) ; Kyzyl, floodplain of Yenisey, left bank, 13.VII.1979 (B.A. Korotyaev), 1♀ (ZISP) ; Ovyurskiy Distr., 20 km E Torchalyg Settlm., Kadyy Riv., steppe and floodplain, 20.VII.1979 (B.A. Korotyaev), 1♀ (ZISP) ; Zabaykal’ skiy Terr.: Borzinskiy Distr.: Sherlovaya Mt., с. 1000 m amsl, forest-steppe, 10.VI.1989 (O. N. Kabakov), 1♀ (ZISP) ; Tsagan-Oluy Settlm ., 1000–1100 m amsl, forest-steppe, 14.VII.1989 (O.N. Kabakov), 1♀ (ZISP) ; Primorskiy Terr.: Kamen’-Rybolov, Khanka Lake, 24, 25,29–30. V. 1908 ( Cherskiy), 3♀, 10.VII.1927 ( Stackelberg), 1♀ (ZISP) . Mongolia: [without locality] 1976 (I.M. Kerzhner), 1♀ (ZISP); Uvs Prov: 15 km S Ulaangom, 30.VIII.1968 (Arnoldi), 1J (ZISP) ; Khövsgöl Prov., 17 km N Shine-Ider, 22.VII.1975 (E. L. Gurjeva), 1♀ (ZISP) ; 25 km SSW Muren, 23.VII.1975 (E.P. Nartshuk; M.A. Kozlov), 1J, 2♀ (ZISP) ; Khankh Settlm ., 26. VII.1983 (I. Ovchinnikov), 1♀ (ZMUM) ; Arkhangai Prov.: 35 km E somon Chulut, 29.VII.1967 (Kerzhner), 1♀ (ZISP) ; 12 km SW Stariy Tsakhir, 28.VI.1975 (A.F. Emeljanov), 1J (ZISP) ; 30 km NW Ikh-Tamir, stony low bunchgrass steppe, under stones, 28.VI.1975 (E.L. Gurjeva), 1♀ (ZISP) ; Bulgan Prov.: 10 km NNE Bugat, 7.VII.1975 (E.L. Gurjeva), 1♀ (ZISP) ; Numre-chiyn-Gol Riv., 32 km SE Salkhit Mt., 15.VI, 6–9.VIII.1976 (E.L. Gurjeva), 2♀ (ZISP) ; Selenge Prov.: 25 km S Darkhan, 30.V.1975 (E. Sugonjaev), 1♀ (ZISP) ; 10 км NE Selenge, Ingetiyn-Gol Riv., 27.VII.1975 (M.A. Kozlov), 1♀ (ZISP) ; Dornod Prov., Derkhin-Tsagan-Obo Riv., 60 km ENE Bayan-Burd[ -Nur Lake], 12,13. VI.1976 (M.A. Kozlov), 2♀ .

Description

Distinguished from all other species by metapleural evaporatorium with short and almost straight peritreme slightly protruding beyond middle of metapleuron. Lateral margins of pronotum, corium, abdominal venter and connexivum with yellowish narrow stripe. Membrane brownish, opaque.

Pygophore as in C. mixtus .

Paramere with rather long and widely rounded apically sensory process (Figure 3 L).

Aedeagus (Figure 5 D) similar to that of C. mixtus and distinguished by somewhat longer dorsolateral lobes of conjunctiva and ventral lobe having convex lateral margins subapically and ventral wall convex along median line at apex in ventral view (Figure 6 V); in lateral view, lobe relatively wider and oblique apically (Figure 3 W). Spicule at dorsolateral lobes weakly (Figure 7 T) or sharply (Figure 7 U) curved.

Gynatrium almost as in C. mixtus, with somewhat shorter posterior pouches (Figure 11 D). First rami rather wide or narrow anteriorly, more or less obliquely truncated at anterior end, with rounded (Figure 8 V) or acute inner angle (Figure 8 W).

Measurements

Body 5.60–8.00 in length, 3.35–5.30 in width; pronotum 3.05–4.60 in width; head 1.36–1.78 in width; ocular index 3.39–4.47; length of antennal segments I–V: 0.29–0.36: 0.53–0.63: 0.48–0.73: 0.69–0.94: 0.78–1.06.

Distribution

Russia (Western and Eastern Siberia, Far East), Kazakhstan, Mongolia, China (North, Central and Southwest Territories) Japan, the Korean Peninsula, east of India, and north of Vietnam (Lis 2006).