Philhygra pseudoelongatula ( Bernhauer, 1907 )

Lee, Seung-Gyu & Ahn, Kee-Jeong, 2012, A taxonomic review of Korean species of the genus Philhygra Mulsant & Rey (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 3483, pp. 58-70 : 65-66

Philhygra pseudoelongatula ( Bernhauer, 1907)

( Figs. 1 E, 6A–H)

Atheta (Metaxya) pseudoelongatula Bernhauer, 1907: 411 .

Atheta (Hygroecia) pseudoelongatula: Brundin, 1944: 185 (as valid species). Atheta (Philhygra) pseudoelongatula: Sawada, 1977: 182 ; Smetana, 2004: 392 (as valid species).

Description. Body length about 3.0 mm. Body ( Fig. 1 E) moderately elongate. Head almost black; antennae and pronotum dark brown; elytra and legs yellowish brown to brown; abdominal tergites dark brown to black, posterior margin of each tergite paler. Head surface glossy, with fine punctation, distance between punctures 2–3 times longer than their diameter; head approximately 1.1 times longer than wide, widest across eyes; eyes prominent, about 1.2 times as long as tempora; antennomeres 4–5 slightly elongate, 6–10 about as long as wide, 11 little shorter than preceding two combined ( Fig. 6 A); labrum ( Fig. 6 B) emarginate in anterior margin, a-sensillum relatively short; prementum with medial and lateral pseudopores. Pronotum slightly transverse, approximately 1.15–1.20 times as wide as long, widest at apical fourth; pubescence in midline directed anteriorly, in apical half antero-laterally, in basal half posteriorly; distance between punctures 1.5–3.0 times longer than their diameter; metanotal scutum with one long seta and about 4–5 relatively short setae on each side of midline; mesoventral process elongate and more or less pointed at apex, longer than metaventral process; length ratio of mesoventral process, isthmus and metaventral process 9:5:3 ( Fig. 6 C). Elytron approximately 1.65 times as long as wide, postero-lateral margin straight; flabellum composed of about 20 setae. Abdominal tergites glossy, with fine punctation, distance between punctures 0.5–1.0 times longer than their diameter; tergites VIII ( Fig. 6 D) with 5 macrosetae on each side of midline; posterior margin of male tergite VIII slightly emarginate; male sternite VIII ( Fig. 6 E) more or less round in posterior margin, with 12 macrosetae on each side of midline; posterior margin of female tergite VIII weakly emarginate at middle; posterior margin of female sternite VIII slightly round, with short marginal setae. Aedeagus as in Figs. 6 F–H.

Material examined. KOREA: Gyeonggi prov.: 5 ex., Seoul-si, Dobong-gu, Taeneung, 16 iv 1988, YS Kim.

Distribution. China, Japan, Korea and Russia (Central European Territory) ( Smetana 2004).

Remarks. This species is similar to P. sparsa , but can be distinguished by the characters provided in the key and the shape and structure of aedeagus.

Figures

FIGURE 1. Habitus of Philhygra. A, P. elongatula, 3.4 mm; B, P. homoeopyga, 3.6 mm; C, P. palustris, 2.9 mm; D, P. polaris, 4.0 mm; E, P. pseudoelongatula, 3.0 mm; F, P. sparsa, 3.1 mm; G, P. yokkaichiana 2.9 mm.

FIGURE 6. Philhygra pseudoelongatula. A, antenna, dorsal aspect; B, labrum, dorsal aspect; C, meso- and metaventrites, ventral aspect; D, male tergite VIII, dorsal aspect; E, male sternite VIII, ventral aspect; F, median lobe, lateral aspect; G, median lobe, ventral aspect; H, paramere, lateral aspect. Scale bars 0.1 mm.