Bicornoculus aungi 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 : 43-46

publication ID

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

publication LSID

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

persistent identifier

https://treatment.plazi.org/id/743FB854-090C-BC48-B1F1-C8E8FE16FE4A

treatment provided by

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

scientific name

Bicornoculus aungi Jiang & Li
status

sp. nov.

Bicornoculus aungi Jiang & Li , sp. nov. ( Figs 37–39 View Figure 37 View Figure 38 View Figure 39 )

Holotype. Male (IZCAS-Ar42697Fo). Late Cretaceous amber from Hukawng Valley. Syninclusion includes one hemipteran.

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

Diagnosis. This species resembles B. levis (see Wunderlich, 2015: 165, figs 117–121, photo 43–44) by the spindleshaped bulb but can be distinguished by the wave-shaped embolus ( Figs 37A–D View Figure 37 , 39 View Figure 39 ). The embolus of the new species is longer than B. levis .

Description. Male. Total length 2.13; carapace 0.90 long, 0.55 wide; opisthosoma 1.23 long, 0.74 wide. Left palp: 0.43 (0.23 + 0.08 + 0.12), left leg I: - (0.79 + 0.22 + - + - + 0.30), leg II: 2.10 (0.71 + 0.23 + 0.51 + 0.36 + 0.29), leg III: - (0.58 + - + - + 0.32 + 0.24), leg IV: - (0.70 + - + - + 0.39 + 0.20); right palp: 0.40 (0.20 + 0.09 + 0.11), right leg I: - (0.81 + 0.22 + - + - + 0.24), leg II: - (0.61 + 0.18 + - + - + 0.20), leg III: - (0.54 + - + - + - + 0.20), leg IV: - (0.64 + - + - + 0.43 + 0.23). Eye sizes: ALE 0.05, PLE 0.06, PME 0.04, eyes interdistances not visible. Habitus as in Figs 38A–B View Figure 38 . Carapace ( Figs 38A–B View Figure 38 ) reticulated, brown; clypeus brown; six eyes ( Figs 38C–D View Figure 38 ) almost ovoid, PME <ALE <PLE; sternum reticulated, rugose. Opisthosoma ( Figs 38A–B View Figure 38 ): Scutum long, oval, covered with long setae, reticulated, center granulated; ventral scutum reticulated, margin rugose.

Palp ( Figs 37A–D View Figure 37 , 39 View Figure 39 ). Bulb long with two apophyses distally, apophyses curved, with serrated margin; embolus sclerotized, slender, bent twice.

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 37. Bicornoculus aungi Jiang & Li, sp. nov., holotype male (IZCAS-Ar42697Fo). A, C. Right palp, dorsal view; B, D. Left palp, dorsal view. Scale bars=0.05mm.

Gallery Image

Figure 38. Bicornoculus aungi Jiang & Li, sp. nov., holotype male (IZCAS-Ar42697Fo). A–B. Habitus (A. Dorsal view; B. Ventral view); C–D. Ocular area (C. Apical view; D. Dorsal view). Scale bars: A–B=0.50mm; C–D=0.05mm.

Gallery Image

Figure 39. Bicornoculus aungi Jiang & Li, sp. nov., holotype male (IZCAS-Ar42697Fo), right palp, dorsal view. Scale bar=0.10mm.