Falcileptoneta baegunsanensis, Xu, Mingjie, Kim, Seung Tae, Yoo, Jung Sun, Nam, Eun Jung & Li, Shuqiang, 2019

Xu, Mingjie, Kim, Seung Tae, Yoo, Jung Sun, Nam, Eun Jung & Li, Shuqiang, 2019, Three new species of the genus Falcileptoneta Komatsu, 1970 (Araneae, Leptonetidae) from Korea, ZooKeys 872, pp. 1-12 : 3

Falcileptoneta baegunsanensis sp. nov. Figures 1 , 2 , 7

Type material.

Holotype: male (NIBR), Mt. Baegunsan, Seonyudam Valley near the parking area (38.0702°N, 127.4026°E), Dopyeong-ri, Idong-myeon, Pocheon-si, Gyeonggi-do, Korea, 09 October 2018, ZG. Chen, Z. Zhao & MJ. Xu leg. Paratypes: 1 male and 1 female (IZCAS), same data as holotype.

Etymology.

The specific name is an adjective referring to the type locality.

Differential diagnosis.

This new species is similar to F. geumsanensis Seo, 2016 and F. boeunensis Seo, 2015 but can be separated by the shape of the palpal tibial apophyses found retrolaterally, with one apophysis coniform and the other bifurcate, bearing three spines distally ( Figure 1D ) (vs. a spur-like tibial apophysis located ventrally, a leaf-like medial apophysis, a dorsal beak-like apophysis in F. geumsanensis ; three tibial spines with the outer spine spur-like, the medial one spine-like, and the inner spine conical in F. boeunensis .).

Description.

Male (holotype). Total length 1.40. Prosoma 0.60 long, 0.51 wide. Opisthosoma 0.80 long, 0.55 wide ( Figure 1A ). Prosoma brown. Eyes six. Median groove, cervical grooves and radial furrows distinct. Clypeus 0.15 high. Opisthosoma gray, ovoid. Leg measurements: I 3.53 (0.94, 0.25,0.99, 0.74, 0.61); II 2.97 (0.88, 0.23, 0.74, 0.62, 0.50); III 2.58 (0.66, 0.19, 0.68, 0.63, 0.42); IV 3.4 (0.98, 0.19, 1.00, 0.81, 0.42). Palp as illustrated in Figure 1C, D : femur lacking strong spine; tibia with three apophyses retrolaterally, with one coniform and the other bifurcate, bearing three spines distally ( Figure 1D ); tarsus with a transverse depression, and a smooth, distinct earlobe-shaped process. Bulb with triangular black sickle-shaped embolus and three types of sclerites: prolateral sclerite membranous; median sclerite wide and shoehorn-like; retrolateral sclerite transparent and membranous ( Figure 1B ).

Female (one of the paratypes). Similar to male in color and general features but larger and with longer legs. Total length 1.39 as in Figure 2A, B . Prosoma 0.55 long, 0.46 wide. Opisthosoma 0.84 long, 0.50 wide. Leg measurements: I 3.25 (0.78, 0.18, 0.84, 0.98, 0.47); II 2.29 (0.69, 0.17, 0.60, 0.48, 0.35); III 2.09 (0.56, 0.16, 0.52, 0.45, 0.40); IV2.88 (0.84, 0.22, 0.80, 0.63, 0.39). Internal genitalia as provided in Figure 2C : atrium rectangular, anterior margin of atrium with short hairs, and spermathecae oval.

Habitat.

Litter layers in mixed forest.

Distribution.

Korea (Gyeonggi-do).

Figures

Figure 1. Falcileptoneta baegunsanensis sp. nov., male holotype. A habitus, dorsal view B palpal bulb, ventral view C palp, prolateral view D palp, retrolateral view. Abbreviations: PS = prolateral sclerite; E = embolus; MS = median sclerite.

Figure 2. Falcileptoneta baegunsanensis sp. nov., female paratype. A habitus, dorsal view B habitus, ventral view C internal genitalia, dorsal view. Abbreviations: At = atrium; SS = spermathecae stalk; SH = spermathecae.

Figure 7. Locality records for three new species of the genus Falcileptoneta from Korea. A F. baegunsanensis sp. nov. B F. odaesanensis sp. nov. C F. umyeonsanensis sp. nov.