Priscaleclercera thanae 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 : 37-39

Priscaleclercera thanae Jiang & Li , sp. nov. ( Figs 31–33 )

Holotype. Male (IZCAS-Ar42694Fo). Late Cretaceous amber from Hukawng Valley. Syninclusion includes one dipteran . Paratype male (IZCAS-Ar42695Fo). Late Cretaceous amber from Hukawng Valley. No biotic syninclusions .

Etymology. The species name is a popular Burmese girl’s name and means “a million”; noun in apposition.

Diagnosis. This species resembles P. paucispinae (see Wunderlich, 2017: 151, figs 119–121, photo 75) by the presence of forks on the sclerites. The new species can be distinguished from the latter by the sclerite 2 without a forked tip in retrolateral view ( Fig. 31A ).

Description. Male. Total length 2.38; Carapace 0.72 long; Opisthosoma 1.66 long. Left palp: - (0.49+ 0.18 + -), left leg I: - (3.28 + 0.27 + 3.48 + - + -), leg II-IV absent, right leg I absent, leg II: 9.67 (2.97 + 0.13 + 3.03 + 2.84 + 0.70), leg III: 4.81 (1.56 + 0.16 +1.22 + 1.31 + 0.56), leg IV: 9.64 (3.21 + 0.31 + 2.56 + 2.78 + 0.78). Eye sizes and interdistances: ALE 0.04, PLE 0.03, PME 0.05, PLE–PME 0.04. Habitus as in Figs 32A–D . Carapace round ( Fig. 32B ), brown, six eyes ( Fig. 32C ) almost ovoid, PME> ALE> PLE; labium not visible. Abdomen ( Figs 32A–B ) light yellow, elongate. Anterior lateral spinnerets ( Fig. 32D ) cylindrical, with three segments.

Palp ( Figs 31A–B, D , 33 ). Femur with at least five short macrosetae ventrally; cymbium longer than wide, with dense brown setae; cymbium with three macrosetae: one retrolateral long and curved with a hook, and two preapical, short, subconical. Bulb longer than wide, with oval basal portion, and three sclerites apically. Sclerite 1 forked, appressed to sclerite 2. Sclerite 2 elongate, serrated apically. Sclerite 3 disc-shaped with two horn-shaped apophyses.

Male (paratype, IZCAS-Ar42695Fo, Fig. 31C ). Same as holotype.

Figures

Figure 31. Priscaleclercera thanae Jiang & Li, sp. nov. A–B, D. Holotype male (IZCAS-Ar42694Fo) (A. Right palp, retrolateral view; B. Left palp, retrolateral view; D. Right palp, dorsal view); C. Paratype male (IZCAS-Ar42695Fo), right palp, retrolateral view. Scale bars=0.05mm.

Figure 32. Priscaleclercera thanae Jiang & Li, sp. nov., holotype male (IZCAS-Ar42694Fo). A–B. Habitus (A. Ventral view; B. Dorsal view); C. Ocular area, dorsal view; D. Spinnerets, ventral view. Scale bars: A–B=0.50mm, C–D=0.05mm.

Figure 33. Priscaleclercera thanae Jiang & Li, sp. nov., holotype male (IZCAS-Ar42694Fo), right palp, retrolateral view. Scale bar = 0.10mm.