Symphytognatha Hickman, 1931 was originally erected by Hickman (1931) as the type genus of the spider family Symphytognathidae. Forster and Platnick (1977) reviewed the family and proposed a diagnosis for Symphytognatha: almost completely fused chelicerae with a visible suture line and multidentate superior claws on legs I and II (but not on legs III and IV). Currently this genus contains 14 species (World Spider Catalog 2019), mainly widespread in South Africa (Griswold 1987), Oceania (Hickman 1931, Forster & Platnick 1977, Platnick 1979, Harvey 1992, 2001), and Central and South America (Balogh & Loksa 1968, Forster & Platnick 1977, Georgescu 1988, Brescovit, Álvares & Lopes 2004, Dupérré & Tapia 2017).

Birds have been widely considered crucial indicators of biodiversity. It is essential to identify bird species precisely for biodiversity surveys. With the rapid development of artificial intelligence, bird species identification has been facilitated by deep learning using audio samples. Prior studies mainly focused on identifying several bird species using deep learning or machine learning based on acoustic features. In this paper, we proposed a novel deep learning method to better identify a large number of bird species based on their call. The proposed method was made of LSTM (Long Short−Term Memory) with coordinate attention. More than 70,000 bird−call audio clips, including 264 bird species, were collected from Xeno−Canto. An evaluation experiment showed that our proposed network achieved 77.43% mean average precision (mAP), which indicates that our proposed network is valuable for automatically identifying a massive number of bird species based on acoustic features and avian biodiversity monitoring.

A new genus and five new species belonging to the family Tetrablemmidae are described from caves in Southwest China, i.e., Sinamma oxycera gen. & sp. n., Singaporemma banxiaoensis sp. n., Singaporemma wulongensis sp. n., Tetrablemma ziyaoensis sp. n. and Tetrablemma menglaensis sp. n. The following new combination is proposed: Sinamma sanya (Lin & Li, 2010), comb. n. ex. Shearella Lehtinen, 1981. The relationships of the Sinamma gen. n. with other genera are discussed. Diagnoses and illustrations for all new taxa are given.

Crassignatha Wunderlich, 1995 is redefined to include species with six eyes in three diads, chelicerae fused only near the base, sculpturing on the carapace, one or two clasping spurs on tibia II, a bilateral scutum of the male abdomen, and globular spermathecae and adjacent copulatory openings in the female. A key and distribution map are provided for 24 Crassignatha species in this paper. Diagnoses and illustrated photographs are provided for 22 species from China, Malaysia, Thailand, and Vietnam. Thirteen species are described and documented as new to science: C. baihua Y. Lin & S. Li, sp. nov. (♂♀), C. bangbie Y. Lin & S. Li, sp. nov. (♀), C. changyan Y. Lin & S. Li, sp. nov. (♀), C. dongnai Y. Lin & S. Li, sp. nov. (♀), C. gucheng Y. Lin & S. Li, sp. nov. (♂♀), C. mengla Y. Lin & S. Li, sp. nov. (♂♀), C. nantou Y. Lin & S. Li, sp. nov. (♂♀), C. nasalis Y. Lin & S. Li, sp. nov. (♂♀), C. rostriformis Y. Lin & S. Li, sp. nov. (♂♀), C. shunani Y. Lin & S. Li, sp. nov. (♂♀), C. si Y. Lin & S. Li, sp. nov. (♂♀), C. thamphra Y. Lin & S. Li, sp. nov. (♀), and C. xichou Y. Lin & S. Li, sp. nov. (♀). Three new combinations are proposed: C. bicorniventris (Lin & Li, 2009), comb. nov., C. quadriventris (Lin & Li, 2009), comb. nov., and C. shiluensis (Lin & Li, 2009), comb. nov. are transferred from Patu Marples, 1951. DNA barcodes and genetic distances of seventeen species are obtained to confirm correct identification. Types of seven known Chinese Crassignatha species are re-examined, and the taxonomic placement of C. longtou Miller, Griswold & Yin, 2009 may be incorrect based on morphological and molecular data.

Fourteen symphytognathid species belonging to three genera are examined, including the descriptions of eight new species and two new genera from China, Vietnam, Thailand and Myanmar: Patu Marples, 1951: P. catba S. Li & Lin, sp. nov. (♂, Vietnam), P. dakou S. Li & Lin, sp. nov. (♂♀, China), P. damtao S. Li & Lin, sp. nov. (♂, Vietnam), P. jiangzhou S. Li & Lin, sp. nov. (♀, China), P. jidanweishi Miller, Griswold & Yin, 2009 (♂♀, China), P. nagarat S. Li & Lin, sp. nov. (♂♀, Thailand), P. nigeri Lin & S. Li, 2009 (♀, China), P. putao S. Li & Lin, sp. nov. (♀, Myanmar), P. qiqi Miller, Griswold & Yin, 2009 (♀, China) and P. xiaoxiao Miller, Griswold & Yin, 2009 (♂♀, China); Kirinua S. Li & Lin, gen. nov.: K. maguai S. Li & Lin, sp. nov. (♂♀, China) and K. yangshuo S. Li & Lin, sp. nov. (♂♀, China); Swilda S. Li & Lin, gen. nov.: S. longtou (Miller, Griswold & Yin, 2009), comb. nov. (♂♀, China) is transferred from Crassignatha Wunderlich, 1995 and S. spinathoraxi (Lin & S. Li, 2009), comb. nov. (♂♀, China) is transferred from Patu. Diagnoses, descriptions and illustrations are provided for new taxa, as well as a distribution map. The males of P. xiaoxiao and S. longtou are described for the first time. Type specimens of P. jidanweishi, P. nigeri, P. qiqi, P. xiaoxiao, S. longtou and S. spinathoraxi are re-examined and photographed. All Asian Patu species are revised and two species, P. kishidai Shinkai, 2009 and P. bispina Lin, Pham & S. Li, 2009, are transferred to Crassignatha and proposed as new combinations: Crassignatha kishidaicomb. nov. and C. bispinacomb. nov. In addition, DNA barcodes and genetic distances of ten species treated in this paper were obtained to confirm identification.