Changminia dao Chu, Yao, Wongprom, and Li 2022
- Dataset
- Changminia gen. nov., a new genus of daddy-long-leg spiders (Araneae: Pholcidae) from karst caves in Southeast Asia
- Rank
- SPECIES
- Published in
- Chu, Chang, Yao, Zhiyuan, Wongprom, Prasit, Li, Shuqiang (2022): Changminia gen. nov., a new genus of daddy-long-leg spiders (Araneae: Pholcidae) from karst caves in Southeast Asia. Zootaxa 5092 (2): 238-246, DOI: 10.11646/zootaxa.5092.2.6
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Pholcidae
- genus
- Changminia
- species
- Changminia dao
description
Description. Male (holotype): Total length 1.92 (2.04 with clypeus), carapace 0.78 long, 0.92 wide, opisthosoma 1.14 long, 0.88 wide. Leg I: 7.93 (2.12 + 0.36 + 2.05 + 2.69 + 0.71), leg II: 7.03 (1.99 + 0.36 + 1.73 + 2.31 + 0.64), leg III: 5.97 (1.60 + 0.33 + 1.47 + 1.99 + 0.58), leg IV missing; tibia I L / d: 19. Distance PME-PME 0.10, diameter PME 0.10, distance PME-ALE 0.03, distance AME-AME 0.02, diameter AME 0.04. Sternum wider than long (0.62 / 0.49). Habitus as in Figs 5 G – H. Carapace yellowish, with brownish radiating marks; ocular area, clypeus and sternum brownish. Legs yellowish, but brownish on patellae, with slightly darker rings on distal parts of femora and tibiae. Opisthosoma yellowish, with brown dorsal and lateral spots. Ocular area elevated and separate from rest of carapace. Thoracic furrow shallow but distinct. Chelicerae (Figs 5 E – F) with pair of proximo-lateral apophyses (pa in Figs 5 E – F) with stridulatory ridges, pair of distal apophyses with sclerotized cones each (da in Fig. 5 E), and pair of frontal apophyses with sclerotized cones each (fa in Figs 5 E – F). Pedipalps as in Figs 4 A – B; trochanter with retrolateral apophysis and ventral apophysis; femur conspicuously enlarged and dorsally strongly curved; procursus (Figs 4 C – D) curved, with elongated prolatero-subdistal apophysis (arrow 1 in Fig. 4 C) and dorso-distal protrusion (arrow 2 in Fig. 4 C); bulb simple, no other projections except for embolus (Fig. 5 D). Retrolateral trichobothrium of tibia I at 13 % proximally; legs with short vertical setae on tibiae, metatarsi and tarsi, without spines or curved setae; tarsus I with 9 distinct pseudosegments. Female: Similar to male, habitus as in Figs 5 I – J. Total length 2.20 (2.33 with clypeus), carapace 0.78 long, 1.01 wide, opisthosoma 1.42 long, 1.28 wide; tibia I: 2.37, tibia I L / d: 20. Distance PME-PME 0.11, diameter PME 0.09, distance PME-ALE 0.03, distance AME-AME 0.02, diameter AME 0.04. Sternum wider than long (0.68 / 0.54). External female genitalia (Figs 5 A – B) brown, with large, proximally wide and distally sharply narrow median apophysis (ma in Figs 5 A – C). Vulva (Fig. 5 C) with membranous anterior arch and nearly n-shaped sclerite (arrow in Fig. 5 C), pore plates not seen. Natural history. The species was found in the aphotic zone inside the cave.
description
Figs 4 – 5
diagnosis
Diagnosis. This species can be easily distinguished from C. huangdi (Tong & Li, 2009) comb. nov. by procursus with elongated prolatero-subdistal apophysis (arrow 1 in Fig. 4 C; prolatero-subdistal apophysis short and pointed in C. huangdi, arrow in Fig. 2 C), without dorsal apophysis (Fig. 4 D; with pointed dorsal apophysis in C. huangdi, arrow in Fig. 2 D), by procursus dorso-distally strongly protruding (arrow 2 in Fig. 4 C; not protruding in C. huangdi, Fig. 2 C), by male chelicerae blunt proximally (arrow in Fig. 5 E; pointed in C. huangdi, arrow in Fig. 3 C), with frontal apophyses (fa in Fig. 5 E; absent in C. huangdi) and distal apophyses long, with sclerotized cones, serrated in lateral view (da in Fig. 5 E; distal apophyses short cone-shaped in C. huangdi, da in Fig. 3 C), and by external female genitalia with large, proximally wide and distally sharply narrow median apophysis (ma in Figs 5 A – C; median apophysis small in C. huangdi, ma in Fig. 3 A).
distribution
Distribution. Thailand (Prachuap Kiri Khan, type locality; Fig. 1).
etymology
Etymology. The specific name is a noun in apposition and refers to the type locality.
materials_examined
Type material. Holotype: male (IZCAS-Ar 42496), Dao Cave (12 ° 35.400 ′ N, 99 ° 43.800 ′ E, elevation 123 m), Nong Phlap Subdistrict, Hua Hin District, Prachuap Kiri Khan, Thailand, 30 October 2014, P. Wongprom leg. Paratype: 1 female (IZCAS-Ar 42497), same data as holotype.