Archaeoboreaphilus rubromaculatus Kim and Ahn, 2012

Kim, Tae-Kyu & Ahn, Kee-Jeong, 2012, Descriptions of two new species and a key to the species of Archaeoboreaphilus Zerche (Coleoptera: Staphylinidae: Omaliinae), Journal of Natural History (J. Nat. Hist.) 46 (41 - 42), pp. 2509-2517 : 2511-2513

Archaeoboreaphilus rubromaculatus Kim and Ahn sp. nov.

( Figures 1A , 2 A–C, 3A–C, 4A,B)

Description

Body ( Figure 1A ) length 3.4–3.6 mm, parallel-sided, slightly depressed above, covered with fine punctures and golden pubescence, brown to dark brown and glossy. Head subglobular, slightly transverse, about 1.09 times as wide as long (include eyes); frons depressed; vertex convex; eye protruding, as long as temple; antennae ( Figure 2A ) thread-like, pubescent, reaching just behind pronotal posterior margin; scape oval and robust, about 2.0 times as long as wide; pedicel to antennomere 10 subtrapezoidal, width of antennomeres 2–4 almost same, antennomeres 4–10 getting slightly wider; pedicel about 2.53 times as long as wide, 0.63 times as wide and 0.79 times as long as scape; antennomere 3 about 2.8 times as long as wide, 1.11 times as long as pedicel; antennomere 7 about 1.94 times as long as wide; antennomere 8 about 1.68 times as long as wide; antennomere 9 about 1.7 times as long as wide; antennomere 11 longest, 3.2 times as long as wide; gular sutures parallel, gular plate a little broad, 0.13 times as wide as head; postgena a little convex. Pronotum ( Figure 2B ) subhexagonal, convex, covered with fine punctures, 1.08 times as wide as long, 0.91 times as wide and 0.92 times as long as head, widest in anterior third, weak depression present on anterior third of midline, posterior third with weak and longitudinal elevation, shallow U-shaped depression present near posterior quarter, lateral margins weakly crenulate, post-lateral margin almost straight. Elytra ( Figures 1A , 2C ) slightly dilated posteriorly with truncate posterior margin, reddish oval marking present on middle, 1.05 times as long as wide, 1.59 times as wide and 1.82 times as long as pronotum. Abdomen broad, a pair of wing folding patches present on tergites IV and V; posterior margin of tergite VII with apical fringe.

Male. Front tarsus more or less broad. Sternite VII pubescent, posterior margin straight; anterior margin of tergite VIII sinuate weakly, posterior margin slightly emarginate ( Figure 3A ); width of anterior projection of sternite VIII almost equal to half of sternite width, posterior margin sinuate ( Figure 3B ); sternite IX ( Figure 3C ) broad, lateral margin constricted on posterior third, basal part of dorsal surface with short longitudinal carina, apical area pubescent with two long setae. Median lobe of aedeagus broad and narrowed apically, lateral margin straight, apical part curved dorsally ( Figure 4A,B ); parameres almost as long as basal bulb, slightly curved inwardly, lateral margin of paramere bent in basal fifth ( Figure 4B ).

Type series

Holotype, ♂: ‘ KOREA: Gangwon Prov., Hongcheon-gun, Nae-myeon, Mt Gyebangsan , 37 ◦ 42 ′ 49.9" N, 128 ◦ 26 ′ 40.5" E, 1100 m, 11 May 2007, TK Kim, YH Kim, wet leaves near mountain bog . Holotype, Archaeoboreaphilus rubromaculatus Kim and Ahn, Desig. T. -K. Kim and K.-J. Ahn 2011. Paratype, KOREA: Gangwon Prov. Pyeongchang-gun, Jinbu-myeon, Mt Odaesan , Sangwonsa , 19 April to 10 May 2007, TK Kim, YH Kim, FIT (1♀) , Paratype, Archaeoboreaphilus rubromaculatus Kim and Ahn, Desig. T. -K. Kim and K.-J. Ahn 2011.

Distribution

Korea.

Remarks

This species differs from other Archaeoboreaphilus species by the reddish oval elytral markings. The morphological diagnostic characters of Korean species are described in Table 1.

Etymology

The specific name, rubromaculatus , refers to the reddish markings on the elytra.

Figures

Figure 1. Habitus. (A) Archaeoboreaphilus rubromaculatus sp. nov., length 3.6 mm; (B) Archaeoboreaphilus macrothorax sp. nov, length 3.8 mm.

Figure 2. (A–C) Archaeoboreaphilus rubromaculatus sp. nov.; (D–F) Archaeoboreaphilus macrothorax sp. nov. (A, D) antenna; (B, E) pronotum, dorsal aspect; (C, F) elytron, dorsal aspect. Scale bars 0.3 mm.

Figure 3. (A–C) Archaeoboreaphilus rubromaculatus sp. nov.; (D–G) Archaeoboreaphilus macrothorax sp. nov. (A, E) male tergite VIII, dorsal aspect; (B, F) male sternite VIII, ventral aspect; (C, G) male sternite IX, ventral aspect. (D) male sternite VII, ventral aspect. Scale bars 0.3 mm.

Figure 4. Aedeagus. (A, B) Archaeoboreaphilus rubromaculatus sp. nov.; (C, D) Archaeoboreaphilus macrothorax sp. nov. (A, C) lateral aspect; (B, D) dorsal aspect. Scale bars 0.3 mm.