Zamilia arkari 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 : 3

publication ID

https://doi.org/ 10.11865/zs.2022101

publication LSID

lsid:zoobank.org:pub:1C62670D-1CEB-4A0C-8A12-D8824F6B61DA

DOI

https://doi.org/10.5281/zenodo.7172578

persistent identifier

https://treatment.plazi.org/id/743FB854-0924-BC67-B1F1-CB3AFDF1F91D

treatment provided by

Felipe (2022-10-09 06:16:45, last updated by Plazi 2023-11-07 18:26:35)

scientific name

Zamilia arkari Jiang & Li
status

sp. nov.

Zamilia arkari Jiang & Li , sp. nov. ( Figs 4–6 View Figure 4 View Figure 5 View Figure 6 )

Holotype. Male (IZCAS-Ar42684Fo). Late Cretaceous amber from Hukawng Valley. No biotic syninclusions.

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

Diagnosis. Zamilia arkari Jiang & Li , sp. nov. resembles Z. quattuormammillae Wunderlich, 2015 (see Wunderlich, 2015: 296, figs 300–309, photo 147) by the trapeziform median apophysis. Z. quattuormammillae has a tegular apophysis in addition to the median apophysis, while the new species does not have.

Description. Male. Total length 3.80; carapace 1.55 long, 1.44 wide; opisthosoma 2.25 long, 1.25 wide. Left palp: - (0.66 + 0.32 + -), left leg I: 7.08 (2.09 + 0.62 + 1.73 + 1.87 + 0.77), leg II: 7.84 (2.82 + 0.71 + 1.52 + 1.90 + 0.89), leg III: - (2.02 + 0.69 + - + - + -), leg IV: 6.75 (1.86 + 0.52 + 1.34 + 2.09 + 0.94); right palp: - (0.78 + - + -), right leg I: 6.80 (1.88 + 0.59 + 1.62 + 1.81 + 0.90), leg II: 7.08 (1.93 + 0.72 + 1.71 + 1.89 +0.83), leg III: 5.71 (1.75 + 0.66 + 1.52 + 1.03 + 0.75), leg IV: - (1.93 + 0.48 + 1.47 + 1.79 + -). Eye sizes and interdistances: ALE 0.08, AME 0.08, PLE 0.09, PME 0.04; AME– AME 0.04, AME–ALE 0.02, PME–PLE 0.06, PME–PME 0.19. Habitus as in Figs 5A–B View Figure 5 . Carapace almost round, longer than wide, yellow. Sternum oval, yellow, with dense brown setae. Metatarsi with 2 distal spines. Opisthosoma elongate. Anterior lateral spinnerets ( Fig. 5D View Figure 5 ) short, posterior spinnerets with terminal segment long, ca. 0.63, basal segment short, ca. 0.20; anal tubercle fringed with long setae.

Palp ( Figs 4A–D View Figure 4 , 6 View Figure 6 ). Ratio of femur length to cymbial length 1.27, femur width 0.22, cymbium oval, longer than wide; median apophysis elongate, bent distally.

Wunderlich, J. 2015. On the evolution and the classification of spiders, the Mesozoic spider faunas, and descriptions of new Cretaceous taxa mainly in amber from Myanmar (Burma) (Arachnida: Araneae). In: Wunderlich, J. (ed.), Beitrage zur Araneologie, Vol. 9. Hirschberg, Germany. pp. 21 - 408.

Gallery Image

Figure 4. Zamilia arkari Jiang & Li, sp. nov., holotype male (IZCAS-Ar42684Fo). A–B. Left palp (A. Ventral view; B. Dorsal view); C–D. Right palp (C. Ventral view; D. Dorsal view). Scale bars=0.10mm.

Gallery Image

Figure 5. Zamilia arkari Jiang & Li, sp. nov., holotype male (IZCAS-Ar42684Fo). A–B. Habitus (A. Dorsal view; B. Ventral view); C. Ocular area, dorsal view; D. Spinnerets, ventral view. Scale bars:A–B=0.50mm; C–D=0.10mm.

Gallery Image

Figure 6. Zamilia arkari Jiang & Li, sp. nov., holotype male (IZCAS-Ar42684Fo), left palp, ventral view. Scale bar=0.10mm.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Oecobiidae

Genus

Zamilia