New species of Langona Simon, 1901 and Neaetha Simon, 1884 (Araneae: Salticidae) from Thailand.

The genera Langona Simon, 1901 and Neaetha Simon, 1884 are recorded from Thailand. Langona pattayensis sp. nov.

New record of Gelotia Thorell, 1890 and a new species of Parahelpis Gardzińska amp; Żabka, 2010 (Araneae: Salticidae) from Australia.

Gelotia robusta Wanless, 1984 (♂♀) and Parahelpis wandae sp. nov. (♂) from Northeast Queensland are diagnosed, described and illustrated.

Computer aided math learning as a tool to assess and increase motivation in learning math by visually impaired students.

Purpose: Effective teaching and learning mathematics is important to achieve good results during an academic and professional career. This is especially difficult for visually impaired students because of difficulties in managing structural information included in maths formulae.

Methods: The extended multimedia alternative method, including the problem of decomposition and knowledge vector, were presented and compared to the classical teaching method.

Salticidae (Arachnida, Araneae) of Thailand: new species and records of Peckham & Peckham, 1886 and Simon, 1885.

The study is based on new material from the collections of the Naturalis Biodiversity Centre in Leiden (RNHM) and the Hungarian Natural History Museum (HNHM) and addresses issues in two genera: Peckham & Peckham, 1886 and Simon, 1885 from Thailand. Both genera are of Asian/Indomalayan origin, the latter with a diversity hotspot in the subtropical valleys of the Himalayas. Based on morphological data, we propose three new species of ( sp.

New species of Simon, 1900 from New Caledonia, with remarks on relationships and distribution (Araneae, Salticidae).

Five new species of : (♀), (♀), (♀), (♀), and (♀) are diagnosed, described, and illustrated. The definition of the genus is ammended and its distribution and relationships are discussed.

A new species of Simon, 1885 (Araneae: Salticidae) from New Zealand, with remarks on relationships and radiation.

A species known from earlier behavioural studies as ".", is described as sp. nov.

The jumping spiders from Xishuangbanna, Yunnan, China (Araneae, Salticidae).

Twenty one jumping spider species from South Yunnan are reported, diagnosed, described and illustrated; 19 of them are described as new: Cao & Li, (♂), Cao & Li, (♂♀), Cao & Li, (♂), Cao & Li, (♂♀), Cao & Li, (♂), Cao & Li, (♂♀), Cao & Li, (♂♀), Cao & Li, (♂♀), Cao & Li, (♂♀), Cao & Li, (♂), Cao & Li, (♂), Cao & Li, (♂), Cao & Li, (♂), Cao & Li, (♂♀), Cao & Li, (♂), Cao & Li, (♂♀), Cao & Li, (♂), Cao & Li, (♂♀), and Cao & Li, (♂). Females of (C.L.

New species of Tauala Wanless, 1988 from Australia (Araneae: Salticidae: Astioida: Astiae), with a redefinition of the genus.

Five species of the genus Tauala Wanless, 1988, namely T. zborowskii sp. nov.

Proszynellus--a new jumping spider genus from Australia (Araneae: Salticidae).

The new genus Proszynellus is described from Western Australia to include three new species: P. nasalis (♂♀), P. wandae (♂♀) and P.

New species of Helpis Simon, 1901 from Australia (Araneae: Salticidae), with a new definition of the genus.

Five new species of Helpis Simon, 1901 from Queensland and New South Wales are diagnosed, described and illustrated: H. foelixi sp. nov.

Redescription of the genus Opisthoncus L. Koch, 1880 (Araneae: Salticidae).

Of 33 nominal species listed by Platnick (2012), 25 species of the genus Opisthoncus are redefined and redescribed here. O. kochi Żabka, 1991, was redescribed by Prószyński (1983) while O.