Zorochros (Zorochros) coreanus Han and Park

Han, Taeman, Park, In Gyun & Park, Haechul, 2015, Two new species of the genus Zorochros (Coleoptera: Elateridae: Negastriinae) from Korea, Zootaxa 3904 (2), pp. 261-269 : 263-264

publication ID	https://doi.org/ 10.11646/zootaxa.3904.2.5
publication LSID	lsid:zoobank.org:pub:1CC9A46E-D16A-4E2F-9628-14A9C9E4591C
DOI	https://doi.org/10.5281/zenodo.5668817
persistent identifier	https://treatment.plazi.org/id/7347095F-A736-FFB9-FF73-FD7FFB4E54FB
treatment provided by	Plazi
scientific name	Zorochros (Zorochros) coreanus Han and Park
status	sp. nov.

Treatment

Zorochros (Zorochros) coreanus Han and Park sp. nov.

( Fig. 1 View FIGURE 1 A; 2A, E; 3A, E; 4A, B)

Zorochros truncates Han 2000 : Cate 2007: 194, nom. emendation.

Type materials. Holotype male, River-sides of Hantan, Jeongok-myeon, Yeoncheon-gun, GG, Korea, 22.VI.1998, leg. Taeman Han and Taehwa Kang. Paratypes: 4 males, 2 females, ditto; 1 male, Dodam-ri, Danyang-gun, CB, Korea, 18.VIII.1984, leg. K. S. Jang; 2 males, 2 females, Musimcheon, Chungju-si, CB, Korea, 11.VI.1998, leg. H. S. Lee. The type series are stored at NAAS.

Description. Body 2.5 mm long and 1.4 mm wide, elliptic. Color black to black-brown, opaque, but basal three antennomeres and legs dusky red-brown; other antennomeres and femur dark brown ( Fig. 1 View FIGURE 1 A). Punctures dense, fine. Vestiture whitish yellow, distinctly erect or recumbent. Head flat between eyes; frontal carina complete, rounded, bifurcate at base; frontal groove narrowed mesally. Mandibles bidentate. Labrum semicircular, 2.1 times as wide as long. Maxillary palpi hatchet shaped; fourth segment subquadrate, 1.6 times as long as wide. Antennae slender: 11th antennomere narrowly elliptic, reaching base of pronotal hind angle; first antennomere large, swelling; second cylindrical, 2.0 times as long as wide, 1.2 times longer than third; third cylindrical; fourth to tenth triangular, feebly serrate, 1.6 times longer than third ( Fig. 2 View FIGURE 2 A). Pronotum convex, 1.3 times as wide as long, broadest at middle; anterior margin slightly prolonged forwards at midline; lateral margins strongly arched at middle, narrowed towards head, weakly sinuate at base of hind angles ( Fig. 3 View FIGURE 3 A); disc with large granules forming triangular area on anterior longitudinal part ( Fig. 3 View FIGURE 3 E). Prosternum with anterior margin truncated; posterior process bent inwardly in lateral view, Scutellum flat, as long as wide ( Fig. 2 View FIGURE 2 E). Metacoxal plate flat, distinctly expanded in middle of posterior margin. Elytra elongate, disc flat, parallel sided in basal two thirds; humeral mucro indistinct. Abdomen with seventh sternite semicircular, 2.5 times wider than long. Aedeagus cylindrical. Median lobe wedge shaped, with ridged median carina, 1.33 times longer than telomeres. Parameres with 3 major setae on anterior lateral margin; basimeres feebly arcuate ( Fig. 4 View FIGURE 4 A, B).

Female similar to male, but antennae only reaching before the base of pronotal hind angles.

Distribution. Korea.

Etymology. The species was named Z. coreanus by the type locality.

Notes. The new species is very similar to Z. mesasiaticus Dolin 1995 from Uzbekistan and Kazakhstan in Central Asia ( Fig. 1 View FIGURE 1 B; 2B, F; 3B, F; 4C), but distinguishable by the following characteristics: second antennomere longer ( Fig. 2 View FIGURE 2 A; Table 1 View TABLE 1 ), scutellum flat in dorsal and pronotal surface with narrower triangular area having large granules ( Fig. 3 View FIGURE 3 A, E). Regarding male genitalia, the apex of the median lobe beyond the parameres is concave, and more pointed; the parameres are rather stout with three thin setae ( Fig. 4 View FIGURE 4 A, B). Z. mesasiaticus possesses relatively large and strong male genitalia, in which the apex of the median lobe is not concave inwardly and more blunt; the parameres are more sharply pointed at apex with three thinker setae, of which second is longest ( Fig. 4 View FIGURE 4 C). This new species was collected in sand and gravel beside large and small streams.