Cymbioblemma ohnmari 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 : 49-52

Cymbioblemma ohnmari Jiang & Li , sp. nov. ( Figs 46–48 )

Holotype. Male (IZCAS-Ar42700Fo). Late Cretaceous amber from Hukawng Valley. No biotic syninclusions.

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

Diagnosis. The new species can be distinguished from all other Cymbioblemma species by the shape of the bulb and embolus. The bulb of the new species is irregularly shaped but the bulb of the other Cymbioblemma species is oval. The embolus of the new species is close to the lateral margin of the bulb.

Description. Male. Total length 1.59; carapace 0.64 long, 0.38 wide; opisthosoma 0.95 long, 0.44 wide. Left palp: 0.30 (0.13 + 0.05 + 0.12), left leg I: 1.81 (0.66 + 0.14 + 0.45 + 0.36 + 0.20), leg II: 1.50 (0.55 + 0.12 + 0.33 + 0.29 + 0.21), leg III: - (0.47 + - + - + 0.30 + 0.28), leg IV: - (0.67 + 0.13 + 0.40 + - + -); right palp: - (0.13 + 0.05 + -), right leg I: - (0.61 + - + - + 0.35 + 0.17), leg II: - (0.57 + - + - + 0.34 + 0.28), leg III: - (- + - + - + 0.26 + 0.24), leg IV: - (0.62 + - + 0.43 + 0.49 + -). Eye sizes: ALE 0.02, AME 0.02, PLE 0.02, eyes interdistances not visible. Habitus as in Figs 47A–D . Carapace ( Fig. 47B ) reticulated, brown; clypeus brown; six eyes ( Fig. 47C ) almost ovoid, AME = ALE = PLE; sternum reticulated, rugose. Opisthosoma ( Figs 47A–B ): scutum long, oval, covered with long setae, reticulated, center granulated; ventral scutum reticulated, margin rugose; anterior lateral spinnerets 0.04.

Palp ( Figs 46A–B , 48 ). Femur more than two times longer than patella; patella short; cymbium conspicuously divided; bulb 0.33 long, 0.26 wide, with abruptly narrowed, needle-shaped basal part, surface smooth; embolus short, strongly sclerotized, appressed to bulb.

Figures

Figure 46. Cymbioblemma ohnmari Jiang & Li, sp. nov., holotype male (IZCAS-Ar42700Fo). A. Right palp, dorsal view; B. Left palp, dorsal view. Scale bars=0.10mm.

Figure 47. Cymbioblemma ohnmari Jiang & Li, sp. nov., holotype male (IZCAS-Ar42700Fo). A–B. Habitus (A. Ventral view; B. Dorsal view); C. Ocular area, dorsal view, arrows point at apophyses on carapace; D. Spinnerets, ventral view. Scale bars: A–B= 0.50mm; C–D=0.05mm.

Figure 48. Cymbioblemma ohnmari Jiang & Li, sp. nov., holotype male (IZCAS-Ar42700Fo), right palp, dorsal view. Scale bar = 0.10mm.