Atheta (Datomicra) celata ( Erichson, 1837 )

Lee, Seung-Gyu & Ahn, Kee-Jeong, 2017, A taxonomic review of the Korean species of the subgenus Datomicra Mulsant & Rey of the genus Atheta Thomson, with description of a new species (Coleoptera, Staphylinidae, Aleocharinae), Zootaxa 4268 (4), pp. 508-522 : 510-511

Atheta (Datomicra) celata ( Erichson, 1837)

( Figs 1 A, 2A–D)

Homalota celata Erichson, 1837: 335 .

Homalota montana Mulsant & Rey, 1852: 38 .

Atheta arenicola Thomson, 1868: 321 .

Homalota germana Sharp, 1869: 235 .

Datomicra wrangeli Casey, 1910: 126 .

Atheta (Datomicra) celata: Palm, 1970: 271 ; Benick & Lohse, 1974: 191; Yosii & Sawada, 1976: 16; Paśnik, 2001: 214; Smetana, 2004: 379; Schülke & Smetana, 2015: 527.

Atheta (Datomicra) exsecta Benick & Lohse, 1974: 191 ; G. Benick, 1975: 14 [homonym].

Diagnosis. Length 1.7–2.0 mm. Body ( Fig. 1 A) reddish brown to black; elytra and legs slightly paler than other parts. Head. Subquadrate, approximately 1.1 times as wide as long, widest across eyes, narrower than pronotum; eyes large and slightly prominent, about 1.3 times as long as temples; gular sutures moderately separated, diverged basally; infraorbital carina complete. Antennae (2A) slightly longer than head and pronotum combined; antennomeres 1–3 elongate, 4–10 quadrate to subquadrate, 11 longest, about as long as preceding two combined. Thorax. Pronotum approximately 1.3–1.4 times as wide as long, widest at middle; hypomera fully visible in lateral aspect. Elytra slightly wider than pronotum; elytron approximately 1.6 times as long as wide, postero-lateral margin almost straight. Abdomen. Subparallel-sided, widest at middle; surface glossy and densely pubescent, with coarse punctures and slightly imbricate microsculpture; macrochaetal arrangement of tergites II–VI 01-02-13 -13- 13; male tergite VIII with four macrosetae on each side of midline, posterior margin with four short process pointed apically; male sternite VIII with seven macrosetae on each side of midline, posterior margin broadly rounded; posterior margin of female tergite VIII ( Fig. 2 B) slightly emarginate in median region; female sternite VIII ( Fig. 2 C) with six macrosetae on each side of midline, posterior margin subtruncate. Aedeagus. Median lobe narrowly ovate, apical process subparallel-sided and blunt at apex in ventral aspect. Spermatheca. Securiform; bursa large, with elongate umbilicus; duct relatively short, hooked apically ( Fig. 2 D).

Type material. Syntype, 1♀, labeled as follows: ‘5471, celata Er. Berol. Er. , Atheta (Datomicra) celata (Er.) Det. Klimaszewski 2004 ; 1 ex. 5471, Hist.-Coll. ( Coleoptera ), Nr. 5471, Homalota celata Er. Berolin., Erichson Zool. Mus. Berlin’ .

Material examined. NORTH KOREA: 4 exx., Korea Čerjong Hwanghe-pukto 9.1971, leg. Pawlowski [ North Korea, Hwanghaebuk Prov., Cerjong , ix 1971, J. Pawlowski] . SOUTH KOREA: Gangwon Prov.: 1♀, Injegun, Buk-myeon, Mt. Seoraksan , Changam-valley , N38°13′00.6″ E128°25′12.3″ 545 m, 9 vi 2011, SG Lee, decaying foods.

Distribution. Korea (South, North), Russia (Central European Territory, East Siberia, North European Territory, South European Territory, West Siberia), Turkey, Uzbekistan, North Africa ( Algeria) and Europe.

Remarks. Atheta (Datomicra) celata is similar to A. (D.) dadopora , A. (D.) lewisiana and A. (D.) nigra , but can be distinguished by the characters provided in the key and different shape and structure of aedeagus. This species was recorded by Paśnik (2001) in North Korea and is recorded here for the first time in South Korea.

Figures

FIGURE 1. Habitus. A, Atheta (Datomicra) celata, 1.8 mm; B, A. (D.) dadopora, 1.7 mm; C, A. (D.) dentiventris, 2.3 mm; D, A. (D.) lewisiana, 1.8 mm; E, Atheta (D.) nigra, 1.7 mm; F, A. (D.) pyongangsani, 2.0 mm; G, A. (D.) semidentiventris sp. nov., 2.1 mm; H, A. (D.) sordidula, 1.6 mm.

FIGURE 2. Atheta (Datomicra) celata. A, antenna; B, female abdominal tergite VIII (dorsal aspect); C, female abdominal sternite VIII (ventral aspect); D, spermatheca. Scales = 0.1 mm.