Pholcus mino Lee & Lee, 2024

Lee, Jun-Gi, Lee, Jun-Ho, Choi, Doo-Yeong, Park, Sun-Jae, Baek, Min-Jeong & Kim, Sam-Kyu, 2024, Nine new species of the genus Pholcus Walckenaer (Araneae: Pholcidae) from South Korea, Zootaxa 5432 (2), pp. 179-212 : 205-207

publication ID

https://doi.org/ 10.11646/zootaxa.5432.2.3

publication LSID

lsid:zoobank.org:pub:8B157EDE-7ADB-4AC0-8C98-66D68D8EB27B

DOI

https://doi.org/10.5281/zenodo.10899108

persistent identifier

https://treatment.plazi.org/id/0387A476-7D00-B052-FF29-23BB7273FDA8

treatment provided by

Plazi

scientific name

Pholcus mino Lee & Lee
status

sp. nov.

Pholcus mino Lee & Lee , sp. nov.

Figs 1O–P View FIGURE 1 , 2O–P View FIGURE 2 , 10, 16G–L, 18

Type material. Holotype: ♂, SOUTH KOREA : Chungcheongbuk-do: Danyang-gun, Daegang-myeon, Mino-ri (36˚51'43"N, 128˚22'45"E, 313 m), 01 Jul. 2017, Doo-Yeong Choi leg. ( NIBR) . Paratypes: 3♀♀, same data as holotype (KNU-Ar 20230079–81) ; 2♂♂, same data as holotype (KNU-Ar 20230082–83) ; 3♂♂ 3♀♀, same data as holotype (KNU-kise 768) .

Etymology. The specific epithet is derived from the type locality, Mino-ri. Noun in apposition.

Diagnosis. Males similar to Pholcus simbok Huber, 2011 , having membranous and spatulate dorsal process and triangular prolateral process submarginally with curved band and distally with single spur ( Fig. 10D View FIGURE 10 ), but can be distinguished by: 1) prolateral process about three times as wide as distal width of dorsal process ( Fig. 10D View FIGURE 10 ) (about twice in P. simbok , see Huber 2011: fig. 2291); 2) pseudoappendix slender and sinuated, as long as inner margin of uncus ( Fig. 10F–G View FIGURE 10 ) (tiny and triangular in P. simbok , see Huber 2011: fig. 2289). Females superficially similar to Pholcus sokkrisanensis Paik, 1978 , having triangular epigynal anterior plate, pair of dark brown linear marks on median portion of sclerotized areas on epigynal posterior plate ( Fig. 10H View FIGURE 10 ), and enlarged lateral concave area of internal genitalia ( Fig. 10I View FIGURE 10 ), but can be distinguished by: 1) epigynal posterior plate about half as long as anterior plate ( Fig. 10H View FIGURE 10 ) (slightly longer than anterior plate in P. sokkrisanensis , see Paik 1978: fig. 44); 2) lateral concave area with anterior portion curved laterally ( Fig. 10I View FIGURE 10 ) (curved anteriorly in P. sokkrisanensis , see Paik 1978: fig. 46); 3) pore plates oblong ( Fig. 10I View FIGURE 10 ) (obovate in P. sokkrisanensis , see Paik 1978: fig. 46).

Description. Male (holotype). Habitus as in Fig. 1O View FIGURE 1 . Total length 5.3. Prosoma 1.5 long, 1.5 wide. Carapace round, pale yellow, with dark brown radial marks and marginal band on thoracic area. Eye area slightly elevated, posteriorly with dark brown marks laterally and medially. Diameter of AME 120 µm, ALE 146 µm, PME 147 µm, PLE 147 µm. AME–AME 42 µm, PME–PME 193 µm, PME–ALE 34 µm. Clypeus with large brown mark, without process. Chelicera ( Fig. 2O–P View FIGURE 2 ) with thumb-like proximo-lateral apophysis with small hump proximoentally, slender, blunt, and slightly ventrally curved frontal apophysis, and ventrally curved, notched triangular distal apophysis slightly shorter than proximo-lateral apophysis. Sternum longer than wide, shield-like, pale yellow with brown marks laterally and posteriorly. Opisthosoma 3.6 long, 1.4 wide, cylindrical, pale yellow, without cuticular patterns, with cardiac pattern and many black granular spots dorsally and laterally. Leg femora and tibiae yellowish brown with two whitish and two dark brown bands distally, two dark brown bands proximally; patellae, metatarsi, tarsi dark brown, without bands; leg Ⅰ femur distinctly darker. Leg Ⅰ 42.5 (10.9 + 0.7 + 10.9 + 17.6 + 2.3), leg II 28.4 (7.9 + 0.7 + 7.2 + 11.1 + 1.4), leg III 19.8 (5.8 + 0.6 + 4.8 + 7.5 + 1.1), leg IV 26.1 (7.7 + 0.6 + 6.5 + 10.1 + 1.3). Ratio of leg Ⅰ (15.4: 1.0: 15.4: 24.8: 3.3), leg II (11.3: 1.0: 10.3: 15.8: 2.0), leg III (9.8: 1.0: 8.1: 12.7: 1.9), leg IV (12.0: 1.0: 10.1: 15.7: 2.0). Leg formula 1243. Tibia Ⅰ L/d 78. Tibiae, metatarsi, tarsi with short vertical setae, tibiae and metatarsi Ⅰ, II with long curved hairs. Tibiae with three trichobothria, except tibia Ⅰ (prolaterally absent). Retrolateral trichobothrium on tibia Ⅰ at 6% proximally. Tarsus I with 24 pseudosegments, mostly irregular. Palp ( Fig. 10A–G View FIGURE 10 ). Trochanter apophysis ( Fig. 10B View FIGURE 10 ) about 0.25 times as long as femur, straight, blunt, proximo-retrolaterally with tubercle; femur ventrally swollen; tibia with prolatero-ventral tubercle; procursus ( Fig. 10B–E View FIGURE 10 ) dark brown, slightly sinuated dorsally, with small ventral knee; dorso-subdistally strongly swollen, with two spines ( Fig. 10C–D View FIGURE 10 ); procursus tip ( Fig. 10C–E View FIGURE 10 ) with three large ridges and several indistinct ridges retrolaterally ( Fig. 10E View FIGURE 10 ), dorsal process membranous, spatulate, distally denticulate, curved ventrally (arrowed 1 in Fig. 10C–D View FIGURE 10 ), and prolateral process triangular and membranous, retrolateral portion with hooked membranous projection curved prolaterally (arrowed 2 in Fig. 10D View FIGURE 10 ), prolateral portion subdistally with single strongly sclerotized spur pointing distally, submarginally with sclerotized curved thin mark (arrowed 3 in Fig. 10D View FIGURE 10 ); genital bulb oval, pale yellow; uncus ( Fig. 10F View FIGURE 10 ) about 0.8 times as long as genital bulb, dark brown, half-heart-shaped, distally slightly curved and pointed, inner margin slightly concave, outer margin with numerous tiny scales, proximally with small concave area; pseudoappendix ( Fig. 10F–G View FIGURE 10 ) strongly sclerotized, slender, sinuated, distally pointed; embolus ( Fig. 10G View FIGURE 10 ) slender, distally fringed, weakly sclerotized, slightly longer than uncus.

Female (one of paratypes, KNU-Ar 20230079). Habitus as in Fig. 1P. View FIGURE 1 Somatic characteristics generally similar to male, but cheliceral apophyses absent, legs slightly shorter. Total length 5.3. Prosoma 1.5 long, 1.6 wide. Diameter of AME 110 µm, ALE 162 µm, PME 142 µm, PLE 157 µm. AME–AME 57 µm, PME–PME 198 µm, PME–ALE 47 µm. Opisthosoma 3.6 long, 1.4 wide. Leg Ⅰ 33.8 (8.7 + 0.6 + 8.7 + 13.7 + 2.2), leg II 23.1 (6.5 + 0.6 + 5.8 + 8.9 + 1.4), leg III 16.6 (4.9 + 0.6 + 4.0 + 6.1 + 1.0), leg IV 23.2 (6.9 + 0.7 + 5.7 + 8.7 + 1.3). Ratio of leg Ⅰ (13.7: 1.0: 13.7: 21.7: 3.5), leg II (11.1: 1.0: 10.0: 15.3: 2.3), leg III (8.6: 1.0: 7.1: 10.8: 1.8), leg IV (10.2: 1.0: 8.4: 13.0: 1.9). Leg formula 1423. Tibia I L/d 67. Epigyne ( Fig. 10H View FIGURE 10 ). Anterior plate obtuse triangular, with yellowish brown mark, near epigynal knob dark brown; posterior plate ivory, about half as long as anterior plate, posterior edge very slightly extended, with pair of brown sclerotized areas laterally and dark brown thick linear marks on sclerotized areas medially, running from anteromedially to posterolaterally; epigynal knob dark brown, moderately thick, blunt, about 0.3 times as long as posterior plate; posterior sclerotized cuticle brown, moderately procurved, slightly longer than posterior plate; interspace between posterior plate and posterior sclerotized cuticle yellowish brown, slightly longer than posterior plate. Internal genitalia ( Fig. 10I View FIGURE 10 ). Anterior arch strongly recurved, medially strongly sclerotized with slightly wavy posterior margin; genital valve strongly recurved; lateral portion ventrally strongly concave and dorsally slightly concave, anterior portion elongated as long as posterior portion; pore plates oblong, close together anteriorly and wide apart posteriorly.

Variation. Males. Prosoma width: 1.4–1.8 (mean 1.6), tibia Ⅰ: 10.6–13.2 (mean 11.8) (n=5).

An intrapopulational variation was observed on the shape of membranous tip of dorsal process and the direction of prolatero-distal spur-like projection of prolateral process in procursus tip ( Fig. 16G–H View FIGURE 16 ).

Females. Prosoma width: 1.5–1.7 (mean 1.6), tibia Ⅰ: 7.6–8.7 (mean 8.1) (n=6). An intrapopulational variation was observed on the size of pore plates and the shape of lateral portion of internal genitalia ( Fig. 16K–L View FIGURE 16 ), but the epigynal shapes were largely consistent ( Fig. 16I–J View FIGURE 16 ).

Habitat information. This species was found on rock walls and crevices under rocks in streamside of mountainous regions.

Distribution. Korea (Danyang) ( Fig. 18 View FIGURE 18 ).

NIBR

National Institute of Biological Resources

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Pholcus

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