Theridula iriomotensis Yoshida, 2001

Seo, Bo Keun, 2018, New species and records of the spider families Pholcidae, Uloboridae, Linyphiidae, Theridiidae, Phrurolithidae, and Thomisidae (Araneae) from Korea, Journal of Species Research 7 (4), pp. 251-290 : 285-287

Theridula iriomotensis Yoshida, 2001

Î꼬ṘHḑ (ṉÿ) ( Fig. 19 F-J)

Theridula iriomotensis Yoshida, 2001: 177 ; Yoshida, 2009: 384.

Material examined. ♂, mixed forest (36°23 ʹ 51 ʺ N, 129° 08 ʹ 41 ʺ E, alt. 276 m), Budong-myeon, Cheongsong-gun , Gyeongsangbuk-do, 6 October 2009, S. Y. Kim .

Diagnosis. This species is easily distinguished from its congeneric species by the abdomen having many black flecks and the male palp having straight and simple embolus ( Fig. 19 F-I).

Description. Male. Total length 1.30. Habitus as in Figure 19F . Carapace reddish brown, and 0.74 long, 0.64 wide. Clypeus height 1.7 times of diameter of AME. AER 0.33, PER 0.44. AER recurved and PER straight in dorsal view. AME 0.08, ALE 0.08, PME 0.07, PLE 0.08, AME-AME 0.05, AME-ALE 0.01, PME-PME 0.04, PME-PLE 0.04, AME-PME 0.05, and ALE-PLE contiguous. Median ocular quadrangle, anterior side>height>posterior side (16:15:13). Chelicera with two promarginal teeth ( Fig. 19J ). Sternum 0.38 long, 0.43 wide. Labium 0.16 wide. Leg measurements: I 2.23 (0.72, 0.26, 0.49, 0.47, 0.29), II 1.89 (0.59, 0.23, 0.39, 0.39, 0.29), III 1.45 (0.44, 0.18, 0.23, 0.35, 0.25), IV 1.59 (0.48, 0.20, 0.31, 0.33, 0.27). Leg I/c 3.10. Fem. I/ c 1.00. Tib. I/c 0.68. Met. I/c 0.65. Pat. I + tib. I/c 1.04. Met. I/tar. I 1.62. Met. IV/tar. IV 1.22. Abdomen heart shaped and yellow with an anterior transverse dark stain and two posterior dark stains, covered with many black flecks, and 0.75 long, 0.78 wide. Palp ( Fig. 19 G-I): bulb simple with elongate embolus and membranous elongate conductor.

Habitat. Mixed forest.

World Distribution. Korea (Gyeongsangbuk-do), Japan.

Deposition. NIBR.

Identifier. Bo Keun Seo.

Figures

Fig. 19. Phoroncidia altiventris Yoshida, 1985 (A-E) and Theridula iriomotensis Yoshida, 2001 (F-J): A - male, frontal view; B - idem, lateral view; C - posterior view; D, G - male left palp, retrolateral view; E, H - idem, prolateral view; F - male habitus; I - idem, ventral view; J - promarginal teeth of chalicera. Scale bars: 0.5 mm (A-C), 0.1 mm (D-J).