Priscaleclercera chimei Jiang & Li, 2022

Xin, Yafei, Jiang, Tongyao, Yao, Zhiyuan & Li, Shuqiang, 2022, Twenty new spider species (Arachnida: Araneae) from Late Cretaceous Kachin amber (Myanmar), Zoological Systematics 47 (1), pp. 1-65 : 18-21

Priscaleclercera chimei Jiang & Li , sp. nov. ( Figs 16–18 )

Holotype. Male (IZCAS-Ar42688Fo). Late Cretaceous amber from Hukawng Valley. Syninclusion includes one mite . Paratype male (IZCAS-Ar42689Fo). Late Cretaceous amber from Hukawng Valley. No biotic syninclusions .

Etymology. The species name is a popular Burmese boy’s name and means “everlasting or immortal”; noun in apposition.

Diagnosis. The new species can be distinguished from all other Priscaleclercera species by the shape of the palpal sclerites: sclerite 1 with 3 apices; sclerite 2 with two needle-shaped, strongly sclerotized structures distally; sclerite 3 with sclerotized structure with membranous margin.

Description. Male (holotype): carapace 0.75 long, 0.52 wide; opisthosoma absent. Left palp: 1.26 (0.62 + 0.13 + 0.51), legs absent. Eye sizes and interdistances: ALE 0.03, PLE 0.03, PME 0.04, PLE–PME 0.04. Habitus as in Figs 17A–B . Carapace oval ( Fig. 17A ), brown; six eyes ( Fig. 17A ) almost ovoid, PME> ALE = PLE; labium not visible.

Palp ( Figs 16A–B , 18 ). At least five short macrosetae ventrally on femur; cymbium 0.45 long, 0.12 wide, with dense brown setae; cymbium with three macrosetae: a long, curved retrolateral one with a hook, and two preapical, short, subconical ones. The bulb bears three sclerites apically. Sclerite 1 and 2 slender, sclerotized. Sclerite 3 forked, with triangular apophysis.

Male (paratype, Figs 17C–D ). Late Cretaceous amber from Hukawng Valley . No biotic syninclusions. Total length 1.42; Carapace 0.59 long, 0.45 wide; Opisthosoma 0.83 long. Left palp: 0.87 (0.42 + 0.12+ 0.33), left leg I: - (2.25 + 0.22 + - + - + -), leg II: - (1.84 + 0.18 + - + - + -), leg III: 3.86 (1.16 + 0.12 + 1.21 + 0.94 + 0.43), leg IV: 5.89 (1.78 + 0.23 + 1.86 + 1.51 + 0.51); right palp: 0.72 (0.38 + 0.12 + 0.22), right leg I absent, leg II: 6.44 (1.92 + 0.22 + 2.15 + 1.6 + 0.55), leg III: 4.00 (1.24 + 0.21 + 1.08 + 1.06 + 0.41), leg IV: 5.98 (1.71 + 0.22 + 2.01 + 1.64 + 0.40). Eye sizes and interdistances: ALE 0.04, PLE 0.05, PME 0.04, PLE–PME 0.04. Habitus as in Figs 17C–D . Carapace ovoid, brown; clypeus brown, slanted; chelicerae 0.26 long. Abdomen light yellow, elongate. Anterior lateral spinnerets cylindrical .

Figures

Figure 16. Priscaleclercera chimei Jiang & Li, sp. nov., holotype male (IZCAS-Ar42688Fo), left palp. A. Retrolateral view; B. Retrolateral, slightly ventral view. Scale bars=0.10mm.

Figure 17. Priscaleclercera chimei Jiang & Li, sp. nov. A–B. Habitus (A. Dorsal view; B. Ventral view), holotype male (IZCAS- Ar42688Fo); C–D. Habitus (C. Ventral view; D. Dorsal view), paratype male (IZCAS-Ar42689Fo). Scale bars=0.20mm.

Figure 18. Priscaleclercera chimei Jiang & Li, sp. nov., holotype male (IZCAS-Ar42688Fo), left palp, retrolateral view. Scale bar= 0.10mm.