A new species of the jumping spider genus Stenaelurillus Simon, 1886, Stenaelurillus albus sp. n., is described from the Western Ghats of India, one of the biodiversity hotspots of the world. Detailed morphological descriptions, diagnostic features and illustrations of copulatory organs of both sexes are given. Detailed redescription, diagnosis and illustration of Stenaelurillus lesserti Reimoser, 1934 are provided. The occurrence of a mating plug in the genus is reported.

Stenaelurillus digitus sp. nov. and Stenaelurillus gabrieli sp. nov. are described from India. New distributional records for Stenaelurillus albus Sebastian et al., 2015 and Stenaelurillus lesserti Reimoser, 1934 and maps for these species are given.

, an undescribed species has been recognized. It closely resembles Bavia insularis Malamel, Sankaran et Sebastian, 2015 described from southern India. Superficially, both these species are similar to the baviines in general body shape, with a flattened and broad carapace, elongated and tubular abdomen and enlarged first pair of legs [Maddison, 2015; Kanesharatnam, Benjamin, 2018]. However, these species have a distinct conformation of copulatory organs that does not correspond to any of the previously described genera. To accommodate these two species, as well as Bavia thorelli Simon, 1901 from Indonesia, we propose to erect a new genus, which seems to be close to Padillothorax. Additionally, we propose a new combination for the baviine species Piranthus casteti Simon, 1900 described from Tamil Nadu (India), because it shares a striking resemblance of its copulatory organs to the recently described genus Bavirecta. ABSTRACT. A new genus Indopadilla Caleb et Sankaran gen.n. is proposed to accommodate three species: I. darjeeling Caleb et Sankaran gen. et sp.n., I. insularis (Malamel, Sankaran et Sebastian, 2015) comb.n. (ex. Bavia) and I. thorelli (Simon, 1901) comb.n. (ex. Bavia). A new species I. darjeeling, the generotype of Indopadilla, is described from West Bengal, India. Additionally, a new combination Bavirecta casteti (Simon, 1900) comb.n. (ex.

The South Asian millipede genus Chondromorpha Silvestri, 1897 is diagnosed and its relationship with Parchondromorpha Jeekel, 1980 is established. The species C. atopus (Chamberlin, 1920) and C. indus (Chamberlin, 1920), as well as the subspecies C. kelaarti kelaarti (Humbert, 1865), C. kelaarti longipes (Verhoeff, 1936) and C. kelaarti valparaiensis (Carl, 1932) are recognised as junior synonyms of C. kelaarti (Humbert, 1865), thereby reducing the total number of Chondromorpha spp. in India to four: C. kaimura Turk, 1947, C. kelaarti, C. mammifera Attems, 1936 and C. severini Silvestri, 1897 (the type-species). Two species, C. kelaarti and C. mammifera, are redescribed and illustrated in detail. All four Indian Chondromorpha spp. are keyed, and the known distribution records of C. kelaarti and C. mammifera are mapped.

The spider genus Theridion was established by Walckenaer in 1805 with Theridion pictum (Walckenaer, 1802) as the type species. It is the most ‘species rich’ theridiid genus comprising 584 described species and 6 subspecies (World Spider Catalog 2015). Theridion zonulatum Thorell, 1890, ‘the zebra theridiid spider’, which is known only by the female, was described from Sumatra. Gao & Li (2014) described Theridion echinatum from the Yunnan Province in China based only on male specimens. During our surveys of Indian spiders, we came across a matching-pair of male and female theridiid spiders from the Kerala region in India. Our female spiders appeared to belong to T. zonulatum, while male spiders shared the features of T. echinatum. This led us to the conclusion that both T. zonulatum and T. echinatum are conspecific. In the present paper, we synonymise T. echinatum with T. zonulatum. The web architecture of T. zonulatum is also described.