Pholcus chuncheonensis Lee, Choi and Kim, 2021

Lee, Jun-Gi, Lee, Jun-Ho, Choi, Doo-Young, Park, Sun-Jae & and, A-Young Kim, 2021, Four new species of the genus Pholcus Walckenaer (Araneae, Pholcidae) from Korea, Journal of Species Research 10 (1), pp. 86-98 : 89-91

publication ID

https://doi.org/ 10.12651/JSR.2021.10.1.086

persistent identifier

https://treatment.plazi.org/id/595787BC-FFAE-AD45-D352-FA19D3929B16

treatment provided by

Felipe

scientific name

Pholcus chuncheonensis Lee, Choi and Kim
status

sp. nov.

Pholcus chuncheonensis Lee, Choi and Kim View in CoL sp. nov.

( Figs. 1A, B View Fig , 2A View Fig , 3 View Fig , 4 View Fig )

Korean name: Ē̏Îffîḍ (̎ḋ)

Type material. Holotype, ♂, Korea: Gangwon-do , Chuncheon-si , Dongsan-myeon, Research Forest of Kangwon National University (37°46′38″N, 127°48′51″E), 14 May 2016, JG Lee and JH Lee leg. ( NIBR) GoogleMaps . Paratype, $, same data as for holotype ( KNU) GoogleMaps .

Other materials examined. 1♂ 3$$, same data as for holotype ( KNU) GoogleMaps ; 11♂♂ 5$$, Gangwon-do, Chuncheon-si, Soyang-dong , Mt. Bongeuisan (37°53′23″N, 127°43′56″E), 05 Oct. 2015, DY Choi leg. ( KISE) GoogleMaps ; 16♂♂ 8$$, Gangwon-do, Chuncheon-si, Namsan-myeon , near Gangchon sewage treatment plant (37°48′23″N, 127°38′20″E), 20 Oct. 2015, DY Choi leg. ( KISE) GoogleMaps ; 20♂♂ 15$$, Gangwon-do, Chuncheon-si, Namsan-myeon , near Gangchon youth hostel (37°48′20″N, 127°37′47″E), 20 Oct. 2015, DY Choi leg. ( KISE) GoogleMaps ; 1♂, Gangwon-do, Chuncheon-si, Dongnae-myeon , Mt. Daeryongsan (37°51′03″N, 127°48′31″E), 05 Jul. 2019, JG Lee and JH Lee leg. ( KNU) GoogleMaps ; 1♂, Gangwon-do, Chuncheon-si, Dongnae-myeon , Mt. Daeryongsan (37°51′03″N, 127°48′31″E), 30 Aug. 2019, JG Lee and JH Lee leg. ( KNU) GoogleMaps ; 1♂ 1$, Gangwon-do, Hongcheon-gun, Bukbang-myeon , Nature Environment Research Park (37°45′19″N, 127°50′57″E), 16 May 2019, JG Lee and JH Lee leg. ( KNU) GoogleMaps ; 12♂♂ 8$$, Gyeonggi-do, Gapyeong-gun, Cheongpyeong-myeon, Goseong-ri (37°42′45″N, 127°29′56″E), 25 Jun. 2018, DY Choi leg. ( KISE) GoogleMaps .

Etymology. The specific epithet is derived from the holotype locality, Chuncheon.

Diagnosis. This species can be distinguished from the other Pholcus species by the combination of following characteristics: Male - procursus with a bifurcated prolateral process (dorsal branch large and sharpened, ventral branch with 1-5 small spikes distally); uncus round, ear-shaped; pseudo-appendix present, spatula-shaped; trochanter apophysis much shorter than palpal femur, slender and triangular, distally blunt; Female - epigynal plate high as an anterior cuticle of epigyne; lateral portion of epigynal plate slightly extended posteriorly, melanized pattern present only at posteromost margin; internal genitalia margin distinctly extended, making lobe-like structure pointing anteriorly and posteriorly; pore plate thick, inverted L-shaped.

Description. Male (holotype). Somatic morphology ( Fig. 1A, B View Fig ) follows the description of the species-group. Total length 3.97. Prosoma 1.30 long, 1.37 wide. Diameter of AME 0.11, ALE 0.14, PME 0.10, PLE 0.13. AME- AME 0.05, AME- ALE 0.04, PME- PME 0.19. Chelicera ( Fig. 2A View Fig ) with a thumblike lateral proximal apophysis, a round frontal proximal apophysis and a triangular distal apophysis. Sternum 0.62 long, 0.94 wide. Opisthosoma 2.62 long, 1.13 wide. Leg Ⅰ 29.90 (12.9: 1.0: 12.6: 20.8: 3.4), Leg II 20.22 (12.5: 1.0: 11.0: 16.9: 2.6), Leg III 14.63 (11.2: 1.0: 9.5: 14.3: 2.6), Leg IV 19.07 (11.6: 1.0: 8.9: 15.0: 2.3). Leg formula 1243. Palp ( Fig. 3 View Fig ). Trochanter apophysis much shorter than femur, slender and triangular distally blunt, not curved; femur ventrally swollen roundly; tibia with a prolatero-ventral tubercle; procursus dark brown, bent perpendicularly, with two ventral knees; dorsal portion of procursus roundly swollen; procursus tip with a blunt retrolateral process with 3 ridges, a triangular median process and a bifurcated prolateral process (dorsal branch large and sharpened, ventral branch with 5 small spikes distally); genital bulb round, pale yellow; uncus dark reddish brown, round, ear-shaped, with many tiny tubercles marginally; pseudo-appendix dark reddish brown, spatula-shaped; embolus weakly sclerotized, pale yellow, longer than pseudo-appendix.

Female (Paratype). Somatic morphology follows the description of the species-group. Total length 4.89. Prosoma 1.21 long, 1.34 wide. Diameter of AME 0.10, ALE 0.14, PME 0.15, PLE 0.15. AME- AME 0.03, AME- ALE 0.04, PME- PME 0.18. Sternum 0.71 long, 0.91 wide. Opisthosoma 3.25 long, 1.51 wide. Leg Ⅰ 28.69 (14.0: 1.0: 13.7: 22.4: 4.2), Leg II 19.92 (10.4: 1.0: 8.9: 13.9: 2.6), Leg III 14.66 (9.1: 1.0: 7.4: 11.4: 2.3), Leg IV 19.92 (12.4: 1.0: 10.2: 15.7: 2.2). Leg formula 1243. Epigyne ( Fig. 4A View Fig ). Anterior cuticle triangular, dark brown; epigynal plate bright ivory, height similar to anterior cuticle, lateral portion slightly extended posteriorly, melanization only present at posteromost margin; epigynal knob small and thin, reddish brown. Internal genitalia ( Fig. 4B View Fig ). Anterior arch horizontal, reddish brown, about 1/3 of epigyne width; antero-lateral margin and postero-lateral margin extended as lobes, pointing both anteriorly and posteriorly, respectively; pore plate thick, inverted L-shaped.

Variation. Male (n = 10) total length 3.97-5.74. Prosoma length 1.30-1.73, width 1.37-1.77. Tibia of Leg Ⅰ 7.43- 12.07. The number of spikes of ventral branch of prolateral process on procursus varies within species, from 1 to 5 (mainly 5).

Female (n = 10) total length 4.89-5.91. Prosoma length 1.21-1.57, width 1.34-1.52. Tibia of Leg Ⅰ 7.09-8.48.

Distribution. Korea (Chuncheon, Hongcheon, Gapyeong).

NIBR

National Institute of Biological Resources

KNU

Kyungpook National University

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Pholcus

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