Pholcus unaksanensis 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 : 95-97

publication ID

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

persistent identifier

https://treatment.plazi.org/id/595787BC-FFA4-AD4B-D352-FAE6D43C9B96

treatment provided by

Felipe

scientific name

Pholcus unaksanensis Lee, Choi and Kim
status

sp. nov.

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

( Figs. 1G, H View Fig , 2D View Fig , 9 View Fig , 10 View Fig )

Korean name: ȇ악Îffîḍ (̎ḋ)

Type material. Holotype, ♂, Gyeonggi-do, Gapyeong-gun, Ha-myeon, Mt. Unaksan (37°51′55″N, 127°20′21″E), 05 Aug. 2014, DY Choi leg. ( NIBR) GoogleMaps . Paratype, $, same data as for holotype ( KNU) GoogleMaps .

Other materials examined. 1$, same data as for holotype ( KNU). 3♂♂ GoogleMaps 23$$, same data as for holotype ( KISE) GoogleMaps .

Etymology. The specific epithet is derived from the type locality, Mt. Unaksan.

Diagnosis. This species can be distinguished from the other Pholcus species by the combination of following characteristics: Male - procursus tip with a large finger-like prolateral process with 2 spikes; uncus oval, posteriorly pointed but distally blunt; pseudo-appendix absent; Female - sclerotized anterior arch of internal genitalia inverted U-shaped, distinctly visible through the epigynal anterior cuticle; lateral margin of internal genitalia strongly curved, S-shaped.

Description. Male (holotype). Somatic morphology ( Fig. 1G, H View Fig ) follows the description of species-group. Total length 5.42. Prosoma 1.71 long, 1.62 wide. Diameter of AME 0.12, ALE 0.15, PME 0.14, PLE 0.15. AME- AME 0.05, AME- ALE 0.05, PME- PME 0.22. Chelicera ( Fig. 2D View Fig ) with a thumblike lateral proximal apophysis with secondary process, a round frontal proximal apophysis and a notched triangular distal apophysis. Sternum 0.89 long, 1.20 wide. Opisthosoma 3.71 long, 1.57 wide. Leg Ⅰ 45.06 (16.5:1.0:16.6:27.7:3.5), Leg II 30.53 (10.3:1.0: 9.3: 15.1: 2.0), Leg III 21.37 (8.5: 1.0: 7.3: 11.2: 1.6), Leg IV 28.11 (12.2: 1.0: 10.9: 16.6: 1.9). Leg formula 1243. Palp ( Fig. 9 View Fig ). Trochanter with a proximal hump retrolaterally, trochanter apophysis much shorter than femur, curved perpendicularly toward tibia and curved once again, pointing retrolaterally; femur ventrally swollen; tibia with a prolatero-ventral tubercle; procursus reddish brown, bent perpendicularly, with a ventral knee; procursus tip with a large finger-like process pointing prolaterally, slightly curved distally, proximally with a short branch (process tip and branch tip with a spike respectively); genital bulb round, pale yellow; uncus oval, dark brown, with many tiny tubercles, posterior margin pointed but distally blunt; pseudo-appendix absent; embolus weakly sclerotized, pale yellow, longer than uncus.

Female (Paratype). Somatic morphology follows the description of the species-group. Total length 5.27. Prosoma 1.60 long, 1.47 wide. Diameter of AME 0.10, ALE 0.15, PME 0.15, PLE 0.18. AME- AME 0.05, AME- ALE 0.04, PME- PME 0.20. Sternum 0.77 long, 1.09 wide. Opisthosoma 3.41 long, 1.68 wide. Leg Ⅰ 34.88 (12.0:1.0:12.1: 20.7:3.3), Leg II 24.15 (10.3:1.0:9.6:15.1:2.3), Leg III 17.94 (8.5:1.0:7.3:11.1:2.1), Leg IV 23.88 (10.6:1.0: 9.3: 14.5:2.0). Leg formula 1243. Epigyne ( Fig. 10A View Fig ). Anterior cuticle triangular, grayish yellow; epigynal plate grayish yellow, posterior margin of lateral portion slightly extended, gradient melanization on lateral margin; epigynal knob reddish brown, shorter than height of epigynal plate. Internal genitalia ( Fig. 10B View Fig ). Anterior arch inverted U-shaped, visible through epigynal anterior cuticle; lateral margin strongly curved, S-shaped; pore plate round.

Variation. Male (n = 4) total length 5.33-5.72. Prosoma length 1.71-1.89, width 1.62-1.83. Tibia of Leg Ⅰ 11.47- 15.45.

Female (n = 10) total length 4.61-5.79. Prosoma length 1.43-1.69, width 1.42-1.70. Tibia of Leg Ⅰ 7.81-9.66.

Distribution. Korea (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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