INTRODUCTION

Eleven species of the thomisid spider genus Ebrechtella are known from Palaearctic and Oriental regions (World Spider Catalog 2015). But only one Ebrechtella species, E. tricuspidata (Fabricius, 1775), was reported from Korea (Namkung et al. 2009).

The other thomisid spider genus Ozyptila consists of 108 species described around the world (World Spider Catalog 2015), of which five sepcies, O. atomaria (Panzer, 1801), O. gasanensisPaik, 1985, O. geumoensisSeo and Sohn, 1997, O. nipponicaOno, 1985 and O. nongaePaik, 1974, were reported from Korea (Namkung et al. 2009).

While studying specimens collected during the Korean indigenous species survey, the author identified a new species, Ebrechtella juwangensis n. sp., a species new to Korea, Ozyptila utotchkini Marusik, 1990, and the male of Ozyptila geumoensisSeo and Sohn, 1997 for the first time, and reported these species with habitus photos and illustrations in the present paper.

MATERIALS AND METHODS

Specimens were examined and measured using a stereomicroscope (Leica S8APO, Singapore). Photographs were taken with a digital camera (Leica DFC 420) and the images were combined using image stacking software (i-Solution, Future Science Co. Ltd., Taejeon, Korea).

The abbreviations in the text follow Seo (2014a, b): Somatic morphology - c, carapace length; l, length; w, width; d, p, r and v in leg spination are dorsal, prolateral, retrolateral and ventral side of leg, respectively. Leg I, length of leg I; Fem. I, length of femur I; Pat. I, length of patella; Tib. I, length of tibia I; Met. I, length of metatarsus I; Tar. I, length of tarsus I; Fem I l/d, femur I length divided by femur I diameter. The sequence of leg segments in measurement data is as follows: total (femur, patella, tibia, metatarsus, tarsus). Eye area - AER, anterior eye row; ALE, anterior lateral eye; ALE-PLE, distance between ALE and PLE; AME, anterior median eye; AME-ALE, distance between AME and ALE; AME-AME, distance between AMEs; AME-PME, distance between AME and PME; PER, posterior eye row; PLE, posterior lateral eye; PME, posterior median eye; PME-PLE, distance between PME and PLE; PME-PME, distance between PMEs.

All measurements in the text are given in millimeters. The examined specimens are deposited in the National Institute of Biological Resources (NIBR), Ministry of Environment, Korea.

RESULTS AND DISCUSSION

Order Araneae Clerck, 1757 거미목

Family Thomisidae Sundevall, 1833 게거미과

Genus EbrechtellaDahl, 1907 꽃게거미속

Ebrechtella juwangensis n. sp. 주왕꽃게거미 (Fig. 1)

Ebrechtella concinna; Seo, 2009: 35 (misidentification)

Material examined: Holotype: ♂, grassland (36°23′57″N, 129°08′44″E, alt. 287 m), 200 m north of Temple Daejeon in Mt. Juwang, Budong-myeon, Cheongsong-gun, Gyeongsangbuk- do, 2 June 2006, S. Y. Kim. Paratype: 6♂♂, 3♀, same data as holotype; 2♂♂, grassland (35°26′14″N, 126°52′59″E, alt. 144 m), 100 m south of Temple Baekyang in Mt. Naejang, Bukha-myeon, Jangseong-gun, Jeollanam-do, 5 June 2004, S. Y. Kim.

Etymology: The specific name comes from the type locality, Mt. Juwang.

Diagnosis: The male palp of Ebrechtella juwangensis n. sp. is similar in appearance to those of E. concinna (Thorell, 1877) and E. tricuspidata (Fabricius, 1775), but can be easily distinguished from the latters by the dorsal tip of retrolateral tibial apophysis curved dorsally and the brown pattern of abdominal dorsum (Fig. 1A, J).

Description: Male holotype. Total length 2.50. Habitus as in Fig. 1A. Carapace 1.25 long, 2.00 wide, yellow with a pair of vertical brown strips; median furrow and cervical groove indistinct; cephalon 0.75 wide; clypeus height 2 times of diameter of AME. AER 0.62, PER 0.72; AER and PER recurved in dorsal view. AME 0.08, ALE 0.10, PME 0.07, PLE 0.08, AME-AME 0.12, AME-ALE 0.08, PME-PME 0.18, PME-PLE 0.18, AME-PME 0.16, and ALE-PLE 0.16. Median ocular quadrangle, posterior side>height>anterior side (16 : 14 : 13). Chelicerae with two small promarginal teeth. Sternum 0.66 long, 0.64 wide. Labium 0.22 long, 0.22 wide. Leg measurements: I 6.46 (1.88, 0.62, 1.54, 1.50, 0.92), II 6.08 (1.76, 0.60, 1.44, 1.44, 0.84), III 2.74 (0.86, 0.38, 0.60, 0.50, 0.40), IV 2.86 (0.90, 0.36, 0.64, 0.50, 0.46). Fem. I l/w 6.27. Tib. I l/w 7.70. Leg I/c 5.17. Fem. I/c 1.50. Tib I/c 1.23. Met I/c 1.20. Pat. I+tib. I/c 1.73. Met. I/tar. I 1.63. Met. IV/tar. IV 1.09. Leg spination pattern: Femora; I, II d1-1-1-1-1, p1-1-1-1, r0-0-1-1; III, IV d1-1-1-1. Tibiae; I d0-1-1-1, p1-1-1, r1-0-1-1, v1-2-2; v2-2; II d0-1-1-1, p1-1-1, r1-0-1-1, v0-2-2; III d1-1, p0-1, r0-1, v0-2; IV d1- 1, p1-1, r0-1, v0-1-0. Metatarsi; I p1-1, r1-1-0, v0-2-2; II p1-1-0, r1-1, v2-2; III, IV p0-1, r0-1. Abdomen 1.45 long, 1.20 wide, pentagonal; dorsum brown, with a longitudinal median white stripe having one chevron and two transverse stripes; venter yellow, posterior margin with several white and brown oblique stripes. Palpal organ with simple curved embolus (Fig. 1C-E, I-K); embolic base located almost at the center of the tegulum; ventral tibial apophysis distally rounded; retrolateral tibial apophysis bipartite, its dorsal tip curved dorsally.

Female (paratype). Total length 4.10. Habitus as in Fig. 1B. Carapace 2.00 long, 1.90 wide; cephalon 1.30 wide; AER 0.92, PER 1.10; AME 0.10, ALE 0.12, PME 0.08, PLE 0.10, AME-AME 0.20, AME-ALE 0.18, PME-PME 0.30, PMEPLE 0.30, AME-PME 0.22, and ALE-PLE 0.22. Median ocular quadrangle, posterior side>height=anterior side (23 : 19). Chelicerae with two small promarginal teeth. Sternum 1.06 long, 0.94 wide. Labium 0.36 long, 0.36 wide. Leg measurements: I 8.85 (2.75, 1.10, 2.10, 1.90, 1.00), II 8.65 (2.75, 1.05, 2.05, 1.80, 1.00), III 4.60 (1.80, 0.65, 0.90, 0.75, 0.50), IV 4.60 (1.45, 0.65, 1.05, 0.90, 0.55). Fem. I l/w 4.58. Tib. I l/w 6.00. Leg I/c 4.43. Fem. I/c 1.38. Tib I/c 1.05. Met I/ c 0.95. Pat. I+tib. I/c 1.60. Met. I/tar. I 1.90. Met. IV/tar. IV 1.64. Leg spination pattern: Femora; I d0-1-0, p1-1-1-0- 1-0; II-IV 0-1-0. Tibiae; I d1-1, p0-1-1, r0-0-1, v1-2-2-2-2; II d1-1, p0-1-1, r0-0-1, v0-2-1-2-1; III d1-1, p0-1, v0-1-0; IV d1-1, p0-1. Metatarsi; I p1-1-1, r1-1-1, v2-2-2-2-2-2; II p1-1-1, r1-1-0, v2-2-2-2-2-2; III p0-1-1, IV p1-1. Abdomen 2.35 long, 2.15 wide; dorsum and venter same as male. Epigynum (Fig. 1E-H, L-N); central hood distinct; genital duct long and coiled; copulatory opening situated anterior to central hood; spermatheca forming a cluster of small vesicles.

Habitat: Grassland.

World Distribution: Korea (Gyeongsangbuk-do).

Deposition: NIBRIV0000321388.

Identifer: Bo Keun Seo.

Ebrechtella tricuspidata (Fabricius, 1775) 꽃게거미

Synonyms: Aranea tricuspidataFabricius, 1775: 433. Misumenops tricuspidatusPaik and Namkung, 1979: 72.

Genus OzyptilaSimon, 1864 곤봉게거미속

Ozyptila atomaria (Panzer, 1801) 낙성곤봉게거미

Synonyms: Aranea atomariaPanzer, 1801: 74.

Ozyptila atomariaNamkung, 2003: 536.

Ozyptila gasanensisPaik, 1985 가산곤봉게거미

Synonyms: Ozyptila gasanensisPaik, 1985: 14.

Ozyptila geumoensisSeo and Sohn, 1997 금오곤봉게거미 (Fig. 2)

Synonyms: Ozyptila geumoensisSeo and Sohn, 1997: 41; Kim and Gwon, 2001: 37; Kim and Lee, 2012: 35.

Material examined: 3♂♂, 1♀, grassland around town hall (36°45′16″N, 129°12′23″E, alt. 436 m), Ogi-ri, Subi-myeon Yeongyang-gun, Gyeongsangbuk-do, 19 July 2010, J. C. Lim; holotype (♀) of Ozyptila geumoensisSeo and Sohn, 1997, camping area in Mt. Geumo (36°06′32″N, 128° 19′02″E, alt. 113 m), Gumi-si, Gyeongsangbuk-do, 28 August 1993, J. I. Jeong.

Diagnosis: The male of Ozyptila geumoensis is easily distinguished from other congeneric species by a big tegular apophysis protruded ventrally (Fig. 2D, E, K-L). The female of O. geumoensis closely resembles O. fukushimaiOno, 2002 in the shape of epigynum, the male specimen of the latter will be helpful to determine whether the two species are conspecific (Fig. 2G-I, N-P).

Description: Male. Total length 2.10. Habitus as in Fig. 2A. Carapace 1.30 long, 1.20 wide, dark brown, covered with many clavate setae; cervical groove and median furrow indistinct; cephalon 0.75 wide; clypeus height 2 times of diameter of AME. AER 0.59, PER 0.74; AER and PER recurved in dorsal view. AME 0.07, ALE 0.13, PME 0.07, PLE 0.09, AME-AME 0.13, AME-ALE 0.07, PME-PME 0.13, PME-PLE 0.22, AME-PME 0.16, and ALE-PLE 0.14. Median ocular quadrangle, height>posterior side=anterior side (22 : 19). Sternum 0.62 long, 0.55 wide. Labium 0.23 long, 0.17 wide. Leg measurements: I 3.19 (0.90, 0.51, 0.61, 0.66, 0.51), II 3.16 (0.91, 0.51, 0.60, 0.66, 0.48), III 2.16 (0.66, 0.40, 0.36, 0.38, 0.36), IV 2.29 (0.69, 0.40, 0.40, 0.42, 0.38). Fem. I l/w 2.66. Tib. I l/w 2.93. Leg I/c 2.45. Fem. I/ c 0.69. Tib I/c 0.47. Met I/c 0.51. Pat. I+tib. I/c 0.86. Met. I/tar. I 1.29. Met. IV/tar. IV 1.11. Leg spination pattern: tibiae I and II v2-2; metatarsi I and II v2-2-2. Abdomen 1.35 long, 1.48 wide, reddish brown; dorsum covered with clavate satae, and wrinkles along the margin except the front. Palpal organ (Fig. 2C-F, J-M); tibia with a blunt ventral and a bifurcate retrolateral; tegular apophysis very big, protruded ventrally; embolus filiform, twisted clockwise and then make a frontal loop.

Female (holotype). See Seo and Sohn (1997) for detailed description. Habitus as in Fig. 2B. Epigynum (Fig. 2G-I, N-P); copulatory opening wide, genital duct narrowed inward; spermathecae relatively small and oval.

Habitat: Grassland.

World Distribution: Korea (Gyeongsangbuk-do).

Deposition: NIBRIV0000321393.

Identifer: Bo Keun Seo.

Ozyptila nipponicaOno, 1985 점곤봉게거미

Synonyms: Ozyptila nipponicaOno, 1985: 29; Seo, 1992: 81.

Ozyptila nongae Paik, 1974 논개곤봉게거미

Synonyms: Ozyptila nongae Paik, 1974: 123.

Ozyptila utotchkini Marusik, 1990 북방곤봉게거미 (신칭) (Fig. 3)

Synonyms: Ozyptila utotchkini Marusik, in Marusik and Chevrizov, 1990: 93; Marusik and Omelko, 2008: 65.

Material examined: 1♂, riverside near Gang Bridge (38° 10′32″N, 128°22′18″E, alt. 559 m), 1.2 km north-northwest of Baekdam Temple, Buk-myeon, Inje-gun, Gangwon-do, 19 July 2010, J. C. Lim; 1♀, grassland near Weon Bridge (36°10′05″N, 128°22′42″E, alt. 426 m), 570 m northeast of Baekdam Temple, Buk-myeon, Inje-gun, Gangwon-do, 19 July 2010, J. C. Lim; 1♂, Mongolian oak (Quercus mongolica) forest on the other side of Daegwallyeong rest area (37° 41′01″N, 128°45′14″E, alt. 842 m), Doam-myeon, Pyeongchang- gun, Gangwon-do, 10 June 2010, J. C. Lim.

Diagnosis: The male of Ozyptila utotchkini is similar to that of O. sakhalinensisOno, Marusik and Logunov, 1990 in the filiform embolus, hooked ventral tibial apophysis, and protruded tegular apophysis, but can be distinguished from the latter by the serrated tip of embolus and two retrolateral tibial apophyses curved ventrally (Fig. 3J, K and M). The female of O. utotchkini closely resembles O. gasanensisPaik, 1985 in the shape of epigynum, but not in the shapes of spermathecae and genital ducts of internal genitalia (Fig. 3H, I, O, P).

Description: Male. Total length 2.90. Habitus as in Fig. 3A. Carapace 1.65 long, 1.65 wide, reddish brown with dark margin and a pair of vertical dark strips; cervical groove and median furrow indistinct; cephalon 0.90 wide; clypeus height 2 times of diameter of AME. AER 0.65, PER 0.81; AER and PER recurved in dorsal view. AME 0.08, ALE 0.13, PME 0.08, PLE 0.12, AME-AME 0.16, AME-ALE 0.07, PME-PME 0.12, PME-PLE 0.23, AME-PME 0.20, and ALE-PLE 0.18. Median ocular quadrangle, height> anterior side>posterior side (26 : 24 : 22). Sternum 0.85 long, 0.74 wide. Labium 0.26 long, 0.23 wide. Leg measurements: I 4.39 (1.30, 0.68, 0.95, 0.88, 0.58), II 4.44 (1.35, 0.68, 0.93, 0.85, 0.63), III 2.86 (0.90, 0.50, 0.55, 0.48, 0.43), IV 3.02 (0.98, 0.48, 0.60, 0.53, 0.43). Fem. I l/w 3.06. Tib. I l/w 3.45. Leg I/c 2.66. Fem. I/c 0.79. Tib I/c 0.58. Met I/c 0.53. Pat. I+tib. I/c 0.99. Met. I/tar. I 1.52. Met. IV/ tar. IV 1.23. Leg spination pattern: tibiae I and II v2-2; metatarsi I and II v2-2-2. Abdomen 1.75 long, 1.95 wide, reddish brown; dorsum covered with small clavate satae, and wrinkles along the margin except the front; venter with fine transverse wrinkles. Palpal organ (Fig. 3C-F, J-M); tibia with a hooked ventral and two retrolateral apophyses curved ventrally; embolus filiform with the serrated tip, twisted clockwise; tegular apophysis protruded ventrally.

Female. Total length 3.85. Habitus as in Fig. 3B. Carapace 1.55 long, 1.55 wide; cephalon 0.85 wide; clypeus height 1.7 times of diameter of AME. AER 0.62, PER 0.79; both eye rows recurved in dorsal view. AME 0.09, ALE 0.16, PME 0.08, PLE 0.13, AME-AME 0.13, AME-ALE 0.05, PME-PME 0.12, PME-PLE 0.22, AME-PME 0.17, and ALE-PLE 0.16. Median ocular quadrangle, height>anterior side>posterior side (25 : 23 : 21). Sternum 0.81 long, 0.68 wide. Labium 0.26 long, 0.23 wide. Leg measurements: I 4.11 (1.23, 0.65, 0.85, 0.80, 0.58), II 3.94 (1.23, 0.63, 0.78, 0.75, 0.55), III 2.73 (0.85, 0.50, 0.50, 0.45, 0.43), IV 3.01 (0.95, 0.50, 0.60, 0.53, 0.43). Fem. I l/w 2.73. Tib. I l/w 2.83. Leg I/c 2.65. Fem. I/c 0.79. Tib I/c 0.55. Met I/c 0.52. Pat. I+tib. I/c 0.97. Met. I/tar. I 1.38. Met. IV/tar. IV 1.23. Abdomen 2.50 long, 2.90 wide. Epigynum with a fovea anteriorly (Fig. 3G-I, N-P); a pair of wide copulatory openings in fovea; genital duct narrowed inward; spermathecae oval.

Habitat: Riverside grassland.

World Distribution: Korea (Gangwon-do).

Deposition: NIBRIV0000321389.

Identifer: Bo Keun Seo.