Abstract
The genus Titidius Simon, 1895 belongs to the family Thomisidae Sundevall, 1833 and can be easily identified from the related genera Tmarus Simon, 1875 and Acentroscelus Simon, 1886 by the high carapace, anterior eye row straight and posterior eye row recurve-;pd in dorsal view, carapace smooth with moderate setation, abdomen longer than wide, legs long, slender and setose and clypeus vertical (Esmerio & Lise 1996). It is currently composed of 20 species, all occurring in Brazil with exception of Titidius ignestii Caporiacco, 1947 from Guyana (World Spider Catalog 2017). Eight species are distributed in the Amazon region (Esmerio & Lise 1996): T. caninde Esmerio & Lise, 1996, T. gurupi Esmerio & Lise, 1996, T. multifasciatus Mello-Leitão, 1929 and T. rubrosignatus (Keyserling, 1880) from Pará; T. galbanatus (Keyserling, 1880) from Amazonas and Pará; T. quinquenatus Mello-Leitão, 1929 and T. urucu from Amazonas; and T. rubescens Carporiacco, 1947 from Amazonas and Roraima.
References
Caporiacco, L. di (1947) Diagnosi preliminari de specie nuove di aracnidi della Guiana Brittanica raccolte dai professori Beccari e Romiti. Monitore Zoologico Italiano, 56, 20−34.
Esmerio, M.E. & Lise, A.A. (1996) Revisão taxonômica do gênero Titidius Simon, 1895 da região neotropical (Araneae, Thomisidae, Thomisinae). Biociências, 3, 185−222.
Keyserling, E. (1880) Die Spinnen Amerikas. I. Laterigradae. Bauer & Raspe (E. Küster), Nürnberg, 283 pp.
Mello-Leitão, C.F. de (1929) Aphantochilidas e Thomisidas do Brasil. Arquivos do Museu Nacional do Rio de Janeiro, 31, 9−359.
Simon, E. (1875) Les arachnides de France. Tome 2. Roret, Paris, 350 pp.
Simon, E. (1886) Espèces et genres nouveaux de la famille des Thomisidae. Actes de la Société Linnéenne de Bordeaux, 40, 167−187.
Simon, E. (1895) Histoire naturelle des araignées. Tome 1. Roret, Paris, 324 pp. [pp. 761−1084]
Sundevall, C.J. (1833) Conspectus Arachnidum, Londini Gothorum, 39 pp.
World Spider Catalog (2017) World Spider Catalog. Version 18.5. Natural History Museum Bern. Available from: http://wsc.nmbe.ch (accessed 28 September 2017)
https://doi.org/10.24436/2