Theridiosoma alboannulatum Suzuki, Serita & Hiramatsu, 2020

Figs 12D, 13D-E, 15C

Theridiosoma alboannulatum Suzuki, Serita & Hiramatsu, 2020: 149, figs 2I-L, 4G-I, 6E-F, 12A-J, 13P (holotype male and paratypes from Iriomote Island, Japan; not examined).

Material examined.

Japan, Kurima Is. (Okinawa Prefecture): 2 ♂, Miyakojima City, Shimojikuruma (24°43'29.2"N, 125°15'09.2"E, alt. 41 m),, 17 Nov. 2021, Y. Suzuki leg. Miyako Is. (Okinawa Prefecture): 3♂ 3 ♀, Miyakojima City, Hiraranishihara, grassland at roadside (24°49'53.5"N, 125°18'55.0"E, alt. 46 m), 24 Apr. 2022, Y. Suzuki leg. Kuroshima Is. (Okinawa Prefecture): 2 ♂ 1♀, Yaeyama District, Taketomi Town, edge of coastal forest besides Hokei beach (24°14'26.2"N, 123°59'32.7"E, alt. 0 m), 2 Nov. 2021, Y. Suzuki leg. Yonaguni Is. (Okinawa Prefecture): 1 ♀, Yaeyama District, Yonaguni Town, Yonaguni (24°27'58.8"N, 123°01'20.1"E, alt. 49 m), 12 Oct. 2021, Y. Suzuki leg. ; 2 ♂ 2♀, Yaeyama District, Yonaguni Town, Sonai Village (24°28'10.5"N, 123°00'31.7"E, alt. 19 m), 12 Oct. 2021, Y. Suzuki leg. ; 1 ♂ 1♀, Yaeyama District, Yonaguni Town, wetland beside secondary forest (24°27'16.3"N, 122°59'24.3"E, alt. 38m), 14 Oct. 2021, Y. Suzuki leg.

Note.

See diagnosis section for comparison with T. nigrivirgatum sp. nov.

Habitat.

This species inhabits grasslands, bushes, and secondary forests. Spiders were collected from the basal parts of grasses.

Web morphology.

The spider weaves a concave web between the grasses (Fig. 13D, E).

Egg sac.

similar to that of T. nigrivirgatum sp. nov. (Fig. 15C).

Distribution.

Japan (Miyako, Kurima, Iriomote, Kuroshima, and Yonaguni Islands; Fig. 11).