Falcileptoneta odaesanensis, 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 : 4-5

Falcileptoneta odaesanensis sp. nov. Figures 3 , 4 , 7

Type material.

Holotype: male (NIBR), Mt. Odaesan 0.2 km east of Sangwonsa Temple (37.7865°N, 128.5665°E), Jinbu-myeon, Pyeongchang-gun, Gangwon-do, Korea, 18 September 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. geumdaensis Seo, 2016, F. sunchangensis Seo, 2016 and F. amakusaensis Irie & Ono, 2005 but can be separated by the palpal tibia with three distal retrolateral setae ( Figure 3D ) (vs. tibial apophysis with two whip-shaped hairs bearing minute setae and the main apophysis spiniform in F. amakusaensis ; tibial apophysis with two spur-like retrolateral apophyses in F. geumdaensis ; tibial apophysis with two retrolateral spines with the dorsal one thick and spur-like in F. sunchangensis ).

Description.

Male (holotype). Total length 1.44 ( Figure 3A ). Carapace 0.63 long, 0.59 wide. Opisthosoma 0.81 long, 0.59 wide. Prosoma brown. Eyes six, reduced to white vestiges. Median groove, distinct cervical grooves and radial furrows. Opisthosoma gray, ovoid. Leg measurements: I 3.27 (0.80, 0.20, 0.91, 0.70, 0.66); II 2.84 (0.75, 0.21, 0.78, 0.60, 0.50); III 2.36 (0.60, 0.18, 0.55, 0.58, 0.45); IV missing. Male palp as in Figure 3C, D : femur without strong spine; tibia with three retrolateral setae distally, arranged in a triangle; tarsus with a transverse depression ( Figure 3D ). Embolus with a membranous margin and three types of sclerites: prolateral sclerite spine-like; median sclerite shoehorn-like; retrolateral sclerite membranous ( Figure 3B ).

Female (one of the paratypes). Similar to male in color and general features but larger and with longer legs. Total length 1.61 as in Figure 4A, B . Prosoma 0.63 long, 0.58 wide. Opisthosoma 0.98 long, 0.69 wide. Leg measurements: I 3.27 (0.80, 0.20, 0.91, 0.70, 0.66); II 2.84 (0.75, 0.21, 0.78, 0.60, 0.50); III 2.36 (0.60, 0.18, 0.55, 0.58, 0.45); IV missing. Internal genitalia as in Figure 4C : atrium triangular, genital duct coiled apically, and spermathecae oval.

Habitat.

Litter layers in mixed forest.

Distribution.

Korea (Gangwon-do).

Figures

Figure 3. Falcileptoneta odaesanensis 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 4. Falcileptoneta odaesanensis 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.