Journal of Species Research 6(Special Edition):51-53, 2017 Note

Tmarus yaginumai Ono, 1977 (Araneae: ) new to record for Korean fauna

Sue Yeon Lee1, Jung Sun Yoo2 and Seung Tae Kim3,*

1Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea 2Division of Resources, National Institute of Biological Resources, Incheon 22689, Republic of Korea 3Life and Environment Research Institute, Konkuk University, Seoul 05029, Republic of Korea

*Correspondent: [email protected]

There are five known species of the genus (Thomisidae) in Korea to date: Tmarus horvathi Kulczyn’ski, 1895, Tmarus koreanus Paik, 1973, Tmarus orientalis Schenkel, 1963, (Walckenaer, 1802) and Tmarus rimosus Paik, 1973. Two females of Tmarus yaginumai Ono, 1977, which was previously only known in , were collected by sweep net between the shrubs at hillocks near the coast of Korea and are described with taxonomic illustrations. Keywords: Araneae, description, Korea, Thomisidae, Tmarus yaginumai

Ⓒ 2017 National Institute of Biological Resources DOI:10.12651/JSR.2017.6(S).051

Introduction (NIBR), Korea.

Tmarus Simon, 1875, which belongs to the family Thomisidae is a fairly large genus comprised of 170 spe- Taxonomic Account cies worldwide (World Spider Catalog, 2017). Tmarus species are easily distinguished externally from other Tmarus yaginumai Ono, 1977 (Fig. 1) genera of Thomisidae by prominently developed lateral (Korean name: Min-hok-beom-ge-geo-mi) eye tubercle, caudal shape of abdomen and coloration. Tmarus yaginumai Ono, 1977: 73, f. 15-17, 35; Yaginu- To date, there are five known species of Tmarus in Ko- ma, 1986: 210, f. 116.3; Ono, 1988: 62, f. 48-50; Ono, rea (Yoo et al., 2015); Tmarus horvathi Kulczyn’ski, 2009: 508, f. 104-108. 1895, Tmarus koreanus Paik, 1973, Tmarus orientalis Schenkel, 1963, Tmarus piger (Walckenaer, 1802) and Measurements. Body length 4.80; Carapace 1.96 long, Tmarus rimosus Paik, 1973. Two females of Tmarus 1.95 wide; Anterior eye row 0.95, Posterior eye row 1.28; yaginumai Ono, 1977 were collected by sweep net be- Chelicera 0.65 long, 0.47 wide; Endite 0.68 long, 0.27 tween the shrubs at hillocks near the coast. The present wide; Labium 0.46 long, 0.23 wide; Sternum 1.00 long, work described and illustrated this species using a ste- 0.82 wide; Leg I 7.45 (2.21, 0.88, 1.84, 1.51, 0.81), II reoscopic dissecting microscope (Olympus SZ 60). Mea- 7.14 (2.14, 0.85, 1.84, 1.51, 0.80), III 4.47 (1.48, 0.59, surements of each part of the body were made with an 1.14, 0.74, 0.52), IV 4.99 (1.73, 0.66, 1.18, 0.88, 0.55); ocular micrometer and are recorded in millimeters. Leg Abdomen 3.17 long, 1.90 wide. measurements are given as “leg number, total length (fe- Description. Female: Carapace dusky blackish brown; mur, patella, tibia, metatarsus, tarsus).” The following almost as long as wide; center of head region light- abbreviations are used in the description: ALE: anterior er, thoracic region mottled with white, dusky blackish lateral eye, AME: anterior median eye, PLE: posterior brown and blackish brown; cervical furrow and radial lateral eye, PME: posterior median eye in eye region, d: furrow blackish brown and distinct; covered sparsely dorsal surface, v: ventral surface, p: prolateral surface with long blackish brown setae (Fig. 1A). Clypeus al- and r: retrolateral surface in leg spiniformation. The most vertical. Eyes all black; lateral eye tubercle prom- voucher specimen of this study was deposited in the inently developed; ALE>PLE>PME>AME in size; collection of National Institute of Biological resources anterior eye row strongly recurved, posterior eye row 52 JOURNAL OF SPECIES RESEARCH Vol. 6, Special Edition

B

C

D A

E F

Fig. 1. A. Female body (Specimen); B. Eye region (from the above); C. Eye region (lateral view); D. Sternum; E. Abdomen (lateral view); F. Epigynum. slightly recurved from the above (Fig. 1B, C). Chelicera septum; kidney-shaped spermathecae visible at the bot- dusky and pale yellowish white; weakly developed; tom (Fig. 1F). no marginal tooth; covered densely with long blackish Specimens examined. 2 females, 18-VI-2014, Dapo-ri, brown setae; fang reddish brown and short. Endite and Nambu-myeon, Geoje-si, Gyeongsangnam-do, SY Lee labium dusky and pale yellowish white; much longer and ST Kim leg. than wide. Sternum dusky and pale yellowish white; Ecological remark. This species was captured by sweep longer than wide; covered densely with short pale yel- net between the shrubs at hillocks near the coast. lowish white hairs; scutiform (Fig. 1D). Leg formula Distribution. Korea (new record), Japan. 1-2-4-3; femur pale yellowish white, the other segments darker; covered densely with short blackish brown hairs; leg spiniformation; I (femur 0-1-1d, 0-0-1-1-1p, 0-1- Acknowledgements 1r; patella 1-1d; tibia 1-1d, 1-1-1p, 1-1-1r, 2-2v; meta- tarsus 1-1-1p, 1-1-1r, 2-1-0-2v), II (femur 0-1-1d, 0-1- This work was supported by a grant from the National 1p, 0-0-1r; patella 1-1d; tibia 1-1d, 1-1-1p, 1-1-1r, 2-2v; Institute of Biological Resources (NIBR), funded by the metatarsus 1-1-1p, 1-1-1r, 1-2-1-2v), III (femur 0-1-1d, Ministry of Environment (MOE) of the Republic of Ko- 0-0-1p; patella 1-1d; tibia 1-1d, 0-1p, 0-1r, 1-1v; meta- rea (NIBR 201601201). tarsus 1-1p, 1-1r, 2-0v), IV (femur 0-1-1d; patella 1-1d; tibia 1-1d, 0-1p, 0-1r, 1-1v; metatarsus 1-1p, 1-1r, 2-0v). Abdomen gently pentagonal; longer than wide; mottled References with white, grayish brown and blackish brown; 2 pairs of transverse stripes posteriorly; posterior part wrinkled; Ono, H. 1977. Thomisidae aus Japan I. Das Genus Tmarus posterior end surrounded with blackish brown band; Simon (Arachnida: Araneae). Acta Arachnologica 27 covered sparsely with blackish brown setae (Fig. 1A); (Spec. No.): 61-84. no caudal protuberance (Fig. 1E); venter with broad and Ono, H. 1988. A revisional study of the spider family Thom- grayish brown median band and both sides dusky white; isidae (Arachnida, Araneae) of Japan. National Science lung spiracle dark reddish brown. Spinnerets dusky and Museum, Tokyo, ii+252 pp. pale yellowish white. Female epigynum with median Ono, H. 2009. The of Japan with keys to the families December 2017 LEE ET AL.-TMARUS YAGINUMAI FROM KOREA 53

and genera and illustrations of the species. Tokai Univer- Yoo, J.S., S.Y. Lee and S.T. Kim. 2015. Bibliographic check- sity Press, Kanagawa, 739 pp. list of Korean spiders (Arachnida: Araneae) ver. 2015. J. World Spider Catalog. 2017. World Spider Catalog. Natural Species Research 4 (Special issue): 1-112. History Museum Bern, online at http://wsc.nmbe.ch, ver- sion 18.5, accessed on 17 August 2017. Yaginuma, T. 1986. Spiders of Japan in color (new ed.). Submitted: August 31, 2017 Hoikusha Publishing Co., Osaka. Revised: October 12, 2017 Accepted: November 9, 2017