Khorata ninhbinh Zhang, Li & Yao, 2024, sp. nov.
Creators: name: Zhang, Ludan
name: Li, Shuqiang
name: Yao, Zhiyuan
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pholcidae
Khorata
Khorata ninhbinh

description: Khorata ninhbinh sp. nov.
Materials
Type status: Holotype. Occurrence: recordedBy: S Li, G Zheng, DS Pham; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 45700102-0BF5-599E-83A5-782455060ED4; Taxon: order: Araneae; family: Pholcidae; genus: Khorata; Location: country: Vietnam; stateProvince: Ninh Binh; locality: Cuc Phuong National Park; verbatimLocality: Mat Cave; verbatimElevation: 18 m a. s. l.; verbatimLatitude: 20 ° 21.125 ’ N; verbatimLongitude: 105 ° 12.381 ’ E; Event: year: 2008; month: 7; day: 22; Record Level: institutionCode: SYNU-Ar 00411
Type status: Paratype. Occurrence: recordedBy: S Li, G Zheng, DS Pham; individualCount: 3; sex: 1 male, 2 females; lifeStage: adult; occurrenceID: C61182A2-DC30-5006-900F-E1CC69BFFBF8; Taxon: order: Araneae; family: Pholcidae; genus: Khorata; Location: country: Vietnam; stateProvince: Ninh Binh; locality: Cuc Phuong National Park; verbatimLocality: Mat Cave; verbatimElevation: 18 m a. s. l.; verbatimLatitude: 20 ° 21.125 ’ N; verbatimLongitude: 105 ° 12.381 ’ E; Event: year: 2008; month: 7; day: 22; Record Level: institutionCode: SYNU-Ar 00412–00414
Description
Male (holotype): Total length 2.62 (2.71 with clypeus), prosoma 0.85 long, 1.06 wide, opisthosoma 1.77 long, 1.12 wide. Leg I: 31.83 (7.91, 0.43, 7.88, 13.01, 2.60), legs II and III missing, leg IV: 19.55 (5.77, 0.42, 4.75, 7.37, 1.24); tibia I L / d: 66. Eye interdistances and diameters: PME – PME 0.16, PME 0.14, PME – ALE 0.04, AME absent. Sternum width / length: 0.78 / 0.66. Habitus as in Fig. 2 E and F. Dorsal shield of prosoma yellowish, with black lateral margins and narrow, dark median line; sternum black. Legs brownish, but slightly whitish on distal parts of femora and tibiae, with distinct darker rings on subdistal parts of femora and tibiae. Opisthosoma yellowish, with large black spots. Thoracic furrow shallow, but distinct. Clypeus unmodified. Ocular area slightly elevated and separated from rest of prosoma. Chelicerae with pair of proximo-lateral apophyses (pa in Fig. 2 C and D), pair of distal apophyses (da in Fig. 2 C and D) on front-lateral surface, pair of strong frontal apophyses (arrows in Fig. 2 C and D) each bearing scales and pair of long, hooked frontal apophyses (fa in Fig. 2 C and D; distance between tips: 0.05). Palp as in Fig. 1 A and B; trochanter with short retrolateral apophysis (as long as wide, arrow 1 in Fig. 1 B) and small ventral apophysis (arrow 2 in Fig. 1 B); femur with small retrolateral apophysis (arrow 3 in Fig. 1 B); patella large; procursus simple proximally, but complex distally, with prolateral distal apophysis bearing scales and two angular apophyses (arrows 1 and 2 in Fig. 1 C), curved retrolateral sclerite (arrow 3 in Fig. 1 C) and spine-shaped, weakly sclerotised retrolatero-distal apophysis (arrow 4 in Fig. 1 C); bulb simple, no other apophyses, except for embolus. Retrolateral trichobothria on tibia I at 6 % proximally; legs with short vertical setae on metatarsi and tarsi; tarsus I with 12 distinct pseudosegments.
Female (paratype, SYNU-Ar 00413): Similar to male, habitus as in Fig. 2 G and H. Total length 3.20 (3.36 with clypeus), prosoma 0.90 long, 1.05 wide, opisthosoma 2.30 long, 1.78 wide; leg I missing. Eye interdistances and diameters: PME – PME 0.17, PME 0.14, PME – ALE 0.03, AME absent. Sternum width / length: 0.64 / 0.62. Epigyne (Fig. 2 A) sclerotised and posteriorly slightly curved, without pockets. Vulva with wavy anterior arch (aa in Fig. 2 B) and pair of anteriorly blunt and posteriorly pointed pore plates (nearly elliptic, pp in Fig. 2 B).
Variation. Tibia I in the male paratype (SYNU-Ar 00412): 7.88. Tibia I in another female paratype (SYNU-Ar 00414): 7.69.
Diagnosis
The new species resembles K. bachma Yao & Li, 2018 (Nie et al. 2018: 481, figs 1 A – D, 2 A – H) by having similar male chelicerae (Fig. 2 C and D) and epigyne (Fig. 2 A), but can be distinguished by procursus with two angular prolateral apophyses (arrows 1 and 2 in Fig. 1 C vs. nearly half-round apophysis in K. bachma), curved retrolateral sclerite (arrow 3 in Fig. 1 C vs. square in K. bachma) and spine-shaped, weakly sclerotised retrolatero-distal apophysis (arrow 4 in Fig. 1 C vs. absent in K. bachma), by pore plates anteriorly blunt and posteriorly pointed (nearly elliptic, pp in Fig. 2 B vs. triangular in K. bachma) and by vulval anterior arch wavy (aa in Fig. 2 B vs. straight in K. bachma).
Etymology
The specific name refers to the type locality; noun in apposition.
Distribution
Vietnam (Ninh Binh, type locality).
Biology
The species was found in the twilight zone (entrance ecotone) of the Mat Cave.
description: Published as part of Zhang, Ludan, Li, Shuqiang & Yao, Zhiyuan, 2024, A new species of the spider genus Khorata Huber, 2005 (Araneae, Pholcidae), with a list of Khorata species from Vietnam, pp. e 128884 in Biodiversity Data Journal 12 on page e128884, DOI: 10.3897/BDJ.12.e128884