Priscaleclercera hlaingi 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 : 27-30

Priscaleclercera hlaingi Jiang & Li , sp. nov. ( Figs 22–24 )

Holotype. Male (IZCAS-Ar42691Fo). Late Cretaceous amber from Hukawng Valley. Syninclusion includes one mite.

Etymology. The species name is a popular Burmese boy’s name and means “plenty, plentiful”; noun in apposition.

Diagnosis. The new species can be distinguished from all other Priscaleclercera species by the palp’s shape. In the new species, sclerites 1 and 2 are both sclerotized and attached to the base of the oval bulb; sclerite 1 is separated from sclerite 2; sclerite 3 is different from those on all other Priscaleclercera species, composed of a sclerotized structure and a complex membranous structure.

Description. Male. Total length 1.55; carapace 0.61 long, 0.54 wide; opisthosoma 0.94 long, 0.34 wide. Left palp: 0.83 (0.42 + 0.16 + 0.25), left leg I: 7.78 (2.28 + 0.27 + 2.31 + 2.25 + 0.67), leg II: 6.80 (2.00 + 0.17 + 2.33 + 1.76 + 0.54), leg III: 2.96 (1.17 + 0.16 + 0.11 + 1.08 + 0.44), leg IV: 6.14 (1.66 + 0.19 + 1.88 + 1.80 + 0.61); right palp: 0.89 (0.38 + 0.21 + 0.30), right leg I: - (2.34 + 0.25 + 1.98 + - + -), leg II: 6.27 (1.84 + 0.16 + 2.01 + 1.71 + 0.55), leg III: 3.75 (1.11 + 0.13 + 1.16 + 0.94 + 0.41), leg IV: 5.53 (1.33 + 0.24 + 1.76 + 1.64 + 0.56). Eye sizes and interdistances: ALE 0.06, PLE 0.05, PME 0.06, PLE–PME 0.05. Habitus as in Figs 23A–B . Carapace round ( Fig. 23B ), yellowish; clypeus yellow, slanted; six eyes ( Fig. 23B ) almost ovoid, ALE = PME> PLE; labium 0.20 long, slanted; sternum yellow, 0.43 long, 0.45 wide. Abdomen ( Figs 23A–B ) elongate. Anterior lateral spinnerets cylindrical, with three segments.

Palp ( Figs 22A–B , 24 ). Femur with at least three short macrosetae ventrally; cymbium longer than wide, with brown setae; cymbium with three macrosetae: a retrolateral, curved one with a hook, and two preapical, short, subconical ones. Bulb longer than wide, with oval basal portion and three sclerites apically. Sclerite 1 sclerotized, slender, S-shaped in retrolateral view. Sclerite 2 elongate, lance-shaped, serrated apically. Sclerite 3 with a complex membranous structure.

Figures

Figure 22. Priscaleclercera hlaingi Jiang & Li, sp. nov., holotype male (IZCAS-Ar42691Fo).A. Left palp, retrolateral view. B. Right palp, retrolateral view, arrows point at macrosetae on femur. Scale bars=0.10mm.

Figure 23. Priscaleclercera hlaingi Jiang & Li, sp. nov., holotype male (IZCAS-Ar42691Fo), habitus. A. Ventral view; B. Dorsal view. Scale bars=0.50mm.

Figure 24. Priscaleclercera hlaingi Jiang & Li, sp. nov., holotype male (IZCAS-Ar42691Fo), right palp, retrolateral view. Scale bar =0.10mm.