taxonID	type	description	language	source
03C987E5FF8E8050FCF3F9C5BBB1FA5C.taxon	diagnosis	Diagnosis. Male palp: cymbium with variable spines on the ventral tip and dorsal surface; tibia rather short, retrolateral tibial apophysis (RTA) developed, ventral tibial apophysis (VTA) reduced and formed a ridge or cusp extending from the base retrolateral tibial apophysis; embolus hooked, not spirally ridged, usually originated from the distinguishable base at distal end of tegulum (except T. vulgaris, where the base of embolus indistinguishable). Female epigynum: median septum broad or narrow, usually flat (except T. vulgaris, where it is concave), lateral guide pocket situated on the both sides of median septum, with auriculate part or not; copulatory opening slit-shaped; sper-matheca kidney-shaped, slender to broad, smooth or grooved; receptaculum visible anteriorly to medially on spermatheca, duct of receptaculum unfree and contained within spermatheca (Dondale et al., 1964; Schick, 1965; Levy, 1977; Dondale and Redner, 1978).	en	Lee, Sue Yeon, Yoo, Jung Sun, Kim, Chang Moon Jang and Seung Tae (2023): Thanatus arcticus Thorell, 1872 (Araneae: Philodromidae) new to the Korean spider fauna. Journal of Species Research 12 (4): 277-280, DOI: 10.12651/JSR.2023.12.4.277
03C987E5FF8E8050FCF3F9C5BBB1FA5C.taxon	type_taxon	Type species. Araneus fonnicinus Clerck, 1757.	en	Lee, Sue Yeon, Yoo, Jung Sun, Kim, Chang Moon Jang and Seung Tae (2023): Thanatus arcticus Thorell, 1872 (Araneae: Philodromidae) new to the Korean spider fauna. Journal of Species Research 12 (4): 277-280, DOI: 10.12651/JSR.2023.12.4.277
03C987E5FF8F8053FF24FA0AB8E3FA1C.taxon	description	Description. Female. Total length 6.70. Carapace: 2.83 long, 2.62 wide. AER 0.78, PER 1.19. Chelicera: 0.92 long, 0.51 wide. Endite: 0.50 long, 0.41 wide. Labium: 0.27 long, 0.44 wide. Sternum: 1.50 long, 1.38 wide. Legs: I 7.94 (2.37, 1.16, 1.82, 1.47, 1.12) / II 8.94 (2.68, 1.29, 2.08, 1.70 1.19) / III 7.80 (2.43, 1.15, 1.86, 1.47, 0.89) / IV 8.76 (2.65, 1.16, 1.99, 1.86, 1.10). Palp: 2.57 (0.79, 0.49, 0.53, -, 0.76). Epigynum 0.53 long / 0.67 wide. Carapace pear-shaped, brown, clothed densely with short, recumbent, and white hairs, lateral sides dark, cer- vical and radial furrows distinct and dark brown, trans- verse fovea slightly depressed, longer than wide (Fig. 1 A). Eight eyes enclosed with a dark patch in two rows, AER slightly recurved and PER strongly recurved, median eyes slightly smaller than lateral eyes (Fig. 1 C). Chelicera brown with two promarginal teeth (distal tooth larger than basal tooth). Endite pale brown, anterior margin truncated, longer than wide (Fig. 1 B). Labium brown, wider than long (Fig. 1 B). Sternum heart-shaped, brown with dark margin, convex, longer than wide, posterior tip round and not protruded between coxae IV, margin clothed sparsely with blackish brown recumbent bristles (Fig. 1 D). Legs brown, robust and strongly developed, femora with two dark parallel lines on dorsal surface and two streaks on retrolateral surface, tibiae with a dark smudge proximal- ly, leg spination: I (femur 0 - 0 - 0 - 1 - 1 - 1 - 2 d / 0 v; tibia 0 - 1 d / 1 - 2 - 2 v; metatarsus 0 d / 2 - 2 - 0 v; tarsus 0 d / 0 v); II (femur 0 - 1 - 1 d / 0 v; tibia 0 - 1 d / 2 - 2 - 2 v; metatarsus 0 d / 2 - 2 - 0 v; tarsus 0 d / 0 v); III (femur 0 - 1 - 1 d / 0 v; tibia 1 - 2 d / 2 - 2 - 2 v; metatarsus 0 - 1 - 3 d / 2 - 2 - 1 v; tarsus 0 d / 0 v); IV (femur 0 - 1 - 1 d / 0 v; tibia 0 - 2 - 2 d / 1 - 2 - 2 v; metatarsus 1 d / 2 - 2 - 3 v; tarsus 0 d / 0 v), leg formula II-IV-I-III. Abdomen ovoid, pale grayish brown, clothed densely with short white hairs, longer than wide, dorsum with a blackish brown longitudinal spear-shaped cardiac pattern occupying anterior half, a pair of blackish brown short streaks posteriorly, clothed sparsely with long blackish brown recumbent bristles (Fig. 1 A), venter pale grayish brown, clothed densely with short white and brown hairs (Fig. 1 B). Epigynum (Fig. 1 E): round and simple, sclerotized, wider than long; median septum broad anteriorly narrowing posteriorly; lateral guide pocket auricu- lar; anteromedial copulatory opening slit-shaped. Internal genitalia (Fig. 1 F, G): spermatheca kidney-shaped and grooved posteriorly, almost contiguous each other; receptaculum spherical, approximately equal to receptaculum duct in length, protruded anteromesad. Habitat. Mountainous mixed forest.	en	Lee, Sue Yeon, Yoo, Jung Sun, Kim, Chang Moon Jang and Seung Tae (2023): Thanatus arcticus Thorell, 1872 (Araneae: Philodromidae) new to the Korean spider fauna. Journal of Species Research 12 (4): 277-280, DOI: 10.12651/JSR.2023.12.4.277
03C987E5FF8F8053FF24FA0AB8E3FA1C.taxon	distribution	Distribution. Korea (new record), USA (Alaska), Canada, Greenland, Northern Europe, Russia (Europe to Far East), Kazakhstan, China, Japan.	en	Lee, Sue Yeon, Yoo, Jung Sun, Kim, Chang Moon Jang and Seung Tae (2023): Thanatus arcticus Thorell, 1872 (Araneae: Philodromidae) new to the Korean spider fauna. Journal of Species Research 12 (4): 277-280, DOI: 10.12651/JSR.2023.12.4.277
