Twenty new spider species (Arachnida: Araneae) from Late Cretaceous Kachin amber (Myanmar) Author Xin, Yafei College of Life Science, Shenyang Normal University, Shenyang 110034, Liaoning, China & Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar Corresponding authors, E-mails: yaozy @ synu. edu. cn; lisq @ ioz. ac. cn Author Jiang, Tongyao Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China Author Yao, Zhiyuan College of Life Science, Shenyang Normal University, Shenyang 110034, Liaoning, China Author Li, Shuqiang Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China text Zoological Systematics 2022 47 1 1 65 http://zoobank.org/1c62670d-1ceb-4a0c-8a12-d8824f6b61da journal article 10.11865/zs.2022101 2095-6827 7176146 1C62670D-1CEB-4A0C-8A12-D8824F6B61DA Palpalpaculla phyui Jiang & Li , sp. nov. ( Figs 49–51 ) Holotype . Male (IZCAS-Ar42701Fo). Late Cretaceous amber from Hukawng Valley . Syninclusions include two dipterans. Figure 49. Palpalpaculla phyui Jiang & Li , sp. nov. , holotype male (IZCAS-Ar42701Fo). A. Left palp, dorsal view; B. Right palp, dorsal view. Scale bars =0.05 mm. Etymology. The species name is a popular Burmese boy’s name and means “white”; noun in apposition. Diagnosis. The new species resembles P. pulcher (see Wunderlich, 2017: 135 , figs 89–91, photos 66–67) by the bulb shape but can be distinguished by the embolus shape ( Figs 49A–B , 51 ). The embolus is tuber-shaped and straight in P. pulcher and the new species, but the embolus of the new species is more complex distally. Description. Male. Total length 1.96; carapace 0.81 long, 0.52 wide; opisthosoma 1.15 long, 0.65 wide. Left palp: 0.46 (0.16 + 0.09 + 0.21), left leg I: - (- + - + - + 0.42 + 0.32), leg II : - (- + - + - + 0.33 + 0.28), leg III : - (- + - + - + 0.32+ 0.21), leg IV: - (- + - + - + 0.43 + 0.31); right palp: 0.43 (0.15 + 0.09 + 0.19), right leg I: - (0.72 + - + - + 0.41 + 0.33), leg II : - (0.46 + - + - + 0.35 + 0.33), leg III : - (0.41 + - + - + 0.33 + 0.30), leg IV: - (0.54 + - + - + 0.45 + 0.34). Eye sizes: ALE 0.06, AME 0.06, PLE 0.06, eyes interdistances not visible. Habitus as in Figs 50A–B . Carapace ( Fig. 50A ) sclerotized, reticulated, brown; cephalic part moderately raised; six eyes ( Fig. 50A ) almost ovoid, AME = ALE = PLE, ALE and PLE adjacent; clypeus brown; clypeus vertical anteriorly; labium triangular, distally obtuse; sternum marginally rugose, posterior corner protruded. Opisthosoma ( Figs 50A–B ): oval with sclerotized lateral plates, smooth, modified by tiny pits, covered with thin setae; ventral scutum rugose. Figure 50. Palpalpaculla phyui Jiang & Li , sp. nov. , holotype male (IZCAS-Ar42701Fo), habitus. A. Dorsal view; B. Ventral view. Scale bars = 0.50 mm. Palp ( Figs 49A–B , 51 ). Femur and patella with apophysis; cymbium small; bulb long, strongly swollen distally, bent once; embolus originates from apex of oval palpal bulb; embolus sclerotized, thickened.