Liogluta distans ( Sharp, 1874 )

Lee, Seung-Gyu & Ahn, Kee-Jeong, 2016, A taxonomic review of Korean Liogluta Thomson (Coleoptera, Staphylinidae, Aleocharinae) with descriptions of three new species, Zootaxa 4193 (2), pp. 285-303 : 290-292

Liogluta distans ( Sharp, 1874)

( Figs. 1 B, 4)

Homalota distans Sharp, 1874: 14 .

Liogluta distans: Sawada, 1977: 200 ; Smetana, 2004: 410; Schülke & Smetana, 2015: 565.

Description. Length 2.5–3.3 mm. Body ( Fig. 1 B) parallel-sided; surface distinctly glossy and densely pubescent, with microsculpture. Body brown to reddish brown; head and abdominal segments V–VIII darker than other parts; legs paler, yellowish brown. Head. Subquadrate, approximately 1.0–1.1 times as wide as long, widest across eyes, slightly narrower than pronotum; eyes large and prominent, about 1.5 times as long as temples; gular sutures moderately separated, diverged basally; infraorbital carina complete; cervical carina complete. Antennae ( Fig. 4 A) long and slender; antennomeres 1–3 elongate, 1 longest, 2 slightly longer than 3, 4–10 subquadrate to slightly transverse, 11 about as long as 1, about as long as preceding two combined. Mouthparts. Labrum transverse, slightly emarginate in anterior margin, with ε-sensillum and about 9 macrosetae on each side of midline; epipharynx with several sensilla, including 2 lateral sensory rows on each side of midline; α-sensillum long and setaceous, about 2.0 times as long as ε-sensillum, β- and γ-sensilla very short. Mandibles asymmetrical, subtriangular, decurved and pointed apically, about 1.7 times as long as basal width; minute denticles present in molar region; right one with small internal tooth, internal margin slightly serrulate; prostheca developed, composited three portions. Galea and lacinia of maxilla long and slender; lacinia having seven spines in distal comb region, contiguous with two isolated spines; maxillary palpus elongate, with pubescence and long setae; palpomere 1 smallest, 2 about 2.6–2.8 times as long as wide, 3 slightly longer than 2, about 2.7–2.8 times as long as wide, 4 digitiform, filamentous sensilla reaching to basal half. Labium with ligula elongate, divided into 2 lobes at base; prementum with two medial setae widely separated; two basal pores moderately separated, about 2.0 times width of basal pore; several medial pseudopores, 1 setal pore and 2 real pores present on each side of midline; labial palpus with many setulae; palpomere 1 largest, about 2.0 times as long as wide, γ-setula contiguous with bseta, 2 shortest, about 1.4–1.5 times as long as wide, 3 parallel-sided and about as long as 1, about 3.0 times as long as wide. Mentum trapezoidal, anterior margin slightly emarginate; v-seta very short, more or less equal distant from u- and w-setae. Thorax. Pronotum slightly transverse, approximately 1.2–1.3 times as wide as long, widest in apical third; hypomera fully visible in lateral aspect. Metanotal scutum with 2 long setae and about 3–6 relatively short setae on each side of midline. Mesocoxal cavities moderately separated, mesoventral process slightly pointed at apex, about as long as or slightly longer than isthmus and metaventral process combined. Elytra longer and slightly wider than pronotum; elytron approximately 1.5 times as long as wide, pubescence directed posteriorly and postero-laterally; postero-lateral margin straight; hind wings fully developed, flabellum composed of about 7–9 long setose lobes. Legs. Slender and long, with pubescence and macrosetae; meso- and metatibiae with different length of two spurs at apex; tarsal formula 4-5-5, length ratio of tarsomeres 24:27:30:74 (protarsus); 34:40:42:40:74 (mesotarsus); 55:50:48:48:92 (metatarsus); one empodial seta present, slightly shorter than claw. Abdomen. Parallel-sided; surface distinctly glossy and densely pubescent, with imbricate microsculpture; macrochaetal arrangement of tergites II–VI 01-13-13 -13-13; male tergite VIII ( Fig. 4 B) with 4 macrosetae on each side of midline, broad process present in median region and posterior margin slightly crenate; male sternite VIII ( Fig. 4 C) with 9 macrosetae on each side of midline, posterior margin convex, slightly round with long marginal setae; posterior margin of female tergite VIII ( Fig. 4 D) subtruncate; female sternite VIII ( Fig. 4 E) with 7 macrosetae on each side of midline, posterior margin broadly round, with long and short marginal setae, minute setae in median region. Aedeagus. Median lobe ( Figs. 4 F–G) narrowly ovate and widest in basal fourth, apical process convergent at apex in ventral aspect; internal sac developed. Apical lobe of paramerites ( Fig. 4 H) with four setae; a-seta longest, c- and d-setae shorter than b-seta, close together and positioned apically. Spermatheca. Reduced.

Type material. Lectotype, ♂, labeled as follows: ‘ Type , Japan, Japan G. Lewis, Homalota distans Type D.S., Sharp Coll. 1905-313. , LECTOTYPE Homalota distans Sharp des. G. Paśnik 2005’. Paralectotypes, 10 exx., same data as Lectotypes .

Material examined. SOUTH KOREA: Chungnam prov.: 1 ex., Buyeo-gun, Mt. Mansusan , 19–20 vii 1999 , US Hwang, HJ Kim, FIT; 16 exx., Buyeo-gun, Naesan-myeon , Mt. Wolmyeongsan , Geumgisa , 3 v–1 vi 2000 , US Hwang, HJ Kim, FIT; 2 exx., Daejeon-si, Yuseong-gu , Chungnam nat. univ., 15 v–4 vi 2003, JH Choi, DH Lee, SM Choi, FIT; 75 exx. (two on slide), Gongju-si, Banpo-myeon, Mt. Gyeryongsan , Woosanbong, 9 v 2000, SJ Park, MS Kim, FIT; 8 exx. (one on slide), same data as former except for ‘ 3 v 2000 , US Hwang, SJ Park, HJ Kim, sifting’; 1 ex., Gyeryongsan, Donghaksa , 3 v 1998, KJ Ahn, JH Ahn, on rocks; 2 exx., Nonsan-si, Beolgok-myeon, Mt. Daedunsan , Surak-valley, 2–10 V 2000 , US Hwang, SJ Park, HJ Kim, FIT. Gangwon Prov.: 1 ex., Pyeongchang-gun, Jinbu-myeon , Mt. Odaesan , Sangwonsa , 22 viii–20 x 2000, KJ Ahn, FIT ; Gyeongbuk Prov.: 1 ex., Ulleung-gun, Taehwa-ri , 17 x 2001, JW Lee; 1 ex., Ulleung-gun, Namyangcheon, 17 x 2001, JW Lee, near stream; 2 exx., Ulleung-gun, Naribunji, 18 x 2001, JW Lee . Jeonbuk Prov.: Jeongeup-si Mt. Naejangsan, Naejangsa , Geumseon valley , 15 vi–24vi 2000 , US Hwang, HJ Kim, FIT. Jeonnam Prov.: 13 exx. (one on slide), Gurye-gun, Mt. Jirisan , Piagol , 24–26 v 2000 , HK Choi, JH Song, MS Kim, bait trap.

Distribution. Korea (South) and Japan.

Remarks. Previously known only from Japan, this species is recorded for the first time in Korea.

Figures

FIGURE 1. Habitus of Liogluta. A, L. changwhani sp. nov.; B, L. distans; C, L. granigera; D, L. infans. E, L. jinilli sp. nov.; F, L. pyonganica; G, L. rufescens sp. nov.; H, L. ursi.

FIGURE 4. Liogluta distans. A, antenna; B, male abdominal tergite VIII (dorsal aspect); C, male abdominal sternite VIII (ventral aspect); D, female abdominal tergite VIII (dorsal aspect); E, female abdominal sternite VIII (ventral aspect); F, median lobe of aedeagus (lateral aspect); G, median lobe of aedeagus (ventral aspect); H, paramere (lateral aspect). Scales = 0.1 mm.