Theridiosoma dissimulatum Suzuki, Serita & Hiramatsu, 2020

Figs 11, 12A, 15B

Theridiosoma dissimulatum Suzuki, Serita & Hiramatsu, 2020: 137, figs 1E-H, 3D-F, 5C, D, 8A-J, 9A-P, 13E-H (holotype male and paratypes from Amami Island, Japan; not examined).

Material examined.

Japan, Amami Is. (Kagoshima Prefecture): 1 ♀, Amami City, Nase-uragami Town (28°23'55.6"N, 129°32'27.5"E, alt. 139 m), 1 Jul. 2021, Y. Suzuki leg. ; 4 ♀, Amami City, Sumiyo Town, Nishinakama, Santaro-toge Pass (28°15'48.7"N, 129°25'09.0"E, alt. 141 m), 6 May 2021, Y. Suzuki leg. ; 1 ♀, Ôshima District, Yamato Village, Ôganeku, Materiya-no-taki Waterfall (28°19'04.4"N, 129°21'08.2"E, alt. 176 m), 4 Jul. 2021, Y. Suzuki leg. Okinoerabu Is. (Kagoshima Prefecture): 2 ♂ 4 ♀, Ôshima District, China Town, Tokudoki (27°21'34.5"N, 128°33'02.8"E, alt. 134 m), 8 Dec. 2021, Y. Suzuki leg. Okinawa Is. (Okinawa Prefecture): 2 ♂ 3 ♀, Naha City, Shuri-sueyoshi Town, Sueyoshi-koen Park (26°13'39.6"N, 127°42'55.3"E, alt. 25 m), 7 Mar. 2021, Y. Suzuki leg. ; 2 ♀, Kunigami District, Ôgimi Village, Nerome (26°40'49.7"N, 128°08'01.1"E, alt. 128 m), 14 Apr. 2021, Y. Suzuki leg. ; 1 ♀, Kunigami District, Ôgimi Village, Ôgimi (26°40'57.9"N, 128°08'21.6"E, alt. 311 m), 15 May 2021, Y. Suzuki leg. Iriomote Is. (Okinawa Prefecture): 1 ♂ 3 ♀, Yaeyama District, Taketomi Town, Haiminaka, Otomi-rindo Path (24°17'52.6"N, 123°52'47.3"E, alt. 18 m), 30 Apr. 2021, Y. Suzuki leg. ; 1 ♂ 3 ♀, Ôtomi-daiichi-do Cave (24°17'31.0"N, 123°52'45.7"E, alt. 30 m), 1 May 2021, Y. Suzuki leg.

Remarks.

This species can easily be distinguished from T. nigrivirgatum sp. nov. by the presence of a conductor projection on the male palp and a heart-shaped invagination with a pair of spurs on the posterior margin of the female epigynal plate (Suzuki et al. 2020). Refer to the description in Suzuki et al. (2020) for further morphological information.

Distribution.

Japan (Amami, Okinoerabu, Okinawa, Ishigaki, and Iriomote Islands; Fig. 11).

Habitat.

This species was collected from dim moist forests, especially from locations beside streams (Fig. 12A).

Web morphology.

Theridiosoma dissimulatum weaves a concave orb web and drags a tension line with the forelegs.

Egg sac.

pale reddish brown and spherical with a long horizontal line and a short stalk (Fig. 15B).