Falcileptoneta umyeonsanensis, 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 : 5-6

Falcileptoneta umyeonsanensis sp. nov. Figures 5 , 6 , 7

Type material.

Holotype: male (NIBR), Mt. Umyeonsan, Seocho-gu, Seoul, Korea, (37.4794°N, 127.0315°E), 03 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. yebongsanensis Kim, Lee & Namkung, 2004 and Leptoneta kwangreungensis Kim, Jung, Kim & Lee, 2004 but can be separated by one hook-like retrolateral apophysis on the palpal tibia, leaf-shaped median apophysis, and sickle-shaped embolus ( Figure 5C ) (vs. short tubercle without spines or bristles on tibia, hook-shaped median apophysis and sickle-shaped embolus in F. yebongsanensis ; spine-shaped embolus and median apophysis in L. kwangreungensis ).

Description.

Male (holotype). Total length 1.58 ( Figure 5A ). Carapace 0.64 long, 0.57 wide. Opisthosoma 0.94 long, 0.67 wide. Prosoma brown. Eyes six. Median groove, distinct cervical grooves and radial furrows. Opisthosoma brown, ovoid. Leg measurements: I 3.95 (1.09, 0.19, 1.19, 0.84, 0.64); II 3.06 (0.86, 0.18, 0.86, 0.64, 0.52); III 2.51 (0.71, 0.16, 0.67, 0.59, 0.38); IV 4.28 (1.12, 0.21, 1.29, 0.94, 0.72). Male palp as in Figure 5C, D : femur without a strong spine; tibia with one hook-like retrolateral apophysis ( Figure 5C ). Embolus with a sickle-shaped tip and three types of sclerites: prolateral sclerite spine-like; median sclerite leaf-like; retrolateral sclerite membranous ( Figure 5B ).

Female (one of the paratypes). Similar to male in color and general features. Total length 1.51 ( Figure 6A, B ). Prosoma 0.63 long, 0.55 wide. Opisthosoma 0.88 long, 0.87 wide. Leg measurements: I 3.50 (0.92, 0.20, 0.98, 0.78, 0.62); II 2.84 (0.75, 0.20, 0.76, 0.63, 0.50); III 2.61 (0.69, 0.20, 0.63, 0.61, 0.48); IV 3.71 (0.94, 0.22, 1.00, 0.80, 0.75). Internal genitalia as in Figure 6C : atrium wrinkled, trapezoidal, genital duct coiled apically, and spermathecae round.

Habitat.

Litter layers in mixed forest.

Distribution.

Korea (Seoul).

Figures

Figure 5. Falcileptoneta umyeonsanensis sp. nov., male holotype. A habitus, dorsal view B right palpal bulb, ventral view C right palp, retrolateral view D right palp, prolateral view. Abbreviations: PS = prolateral sclerite; E = embolus; MS = median sclerite.

Figure 6. Falcileptoneta umyeonsanensis 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.