@article {8923, title = {Two new Neotropical spiders of the genera Oecobius and Platoecobius (Araneae: Oecobiidae)}, journal = {Zootaxa}, volume = {1786}, year = {2008}, month = {Jun-09-2008}, pages = {61}, abstract = {

Two new species of Oecobiidae are described from Central and South America, representing the first native members of the family recorded south of Mexico. Oecobius eberhardi sp.nov. is described based on male and female specimens collected from two localities in Costa Rica. Platoecobius kooch sp.nov., the second species in the genus, is described from female specimens collected in Southern Argentina. A new diagnosis is proposed for the genus Platoecobius Chamberlin \& Ivie, 1935, which now includes one species endemic to the south-eastern USA and another from Argentinean Patagonia.

}, issn = {1175-5334, 1175-5326}, doi = {10.11646/zootaxa.1786.1.5}, url = {http://dx.doi.org/10.11646/zootaxa.1786.1.5}, author = {Santos, Adalberto J and Gonzaga, Marcelo O} } @article {8722, title = {A new species and a new synonymy in the spiny orb-weaver spider genus Micrathena (Araneae, Araneidae)}, journal = {Journal of Arachnology}, volume = {32}, year = {2004}, pages = {332{\textendash}335}, author = {Gonzaga, Marcelo O. and Santos, Adalberto J} } @article {8650, title = {Morphology and taxonomy of the orb-weaving spider genus Mecynogea, and a peculiar species of Argiope (Araneae, Araneidae)}, journal = {Zootaxa}, volume = {4415}, year = {2018}, pages = {423-451}, abstract = {

The spider genus Mecynogea comprises nine species distributed predominantly in the Neotropics. Although the genus has been revised recently, several aspects of its taxonomy and morphology are still unresolved. In this paper, Mecynogea infelix (Soares \& Camargo, 1948) is removed from the synonymy of Mecynogea bigibba Simon, 1903 and redescribed. Mecynogea chavona Levi, 1997 is considered a junior synonym of M. infelix. The male of Mecynogea buique Levi, 1997 is described and illustrated for the first time. The internal female genitalia of M. buique and M. infelix is described and shown to be remarkably different from each other. We show that part of the intraspecific variation reported previously for the female of M. infelix is the result of epigynum mutilation, possibly during copulation. We also report the presence of an internal branch on the terminal apophysis in the male palp of Mecynogea species. This structure, in some species visible only on the expanded bulb, is shown to be present in all Cyrtophorinae. The internal branch of the terminal apophysis, together with the conductor fully fused to the tegulum, is herein proposed as synapomorphic for the subfamily. Mecynogea lemniscata (Walckenaer, 1841) is recorded for the first time in Bolivia. We also provide new Brazilian records for M. infelix, M. bigibba, M. buique, M. eryhtromela (Holmberg, 1876), and M. sucre Levi, 1997. Mecynogea carvalhoi Mello- Leitão, 1944, currently considered a nomen dubium, is revalidated, transferred to Argiope Audouin, 1826, redescribed and illustrated for the first time.

}, author = {Martins, Pedro and Santos, Adalberto J} } @article {8596, title = {The jumping lynx spider Oxyopes salticus Hentz, 1845 and its Neotropical relatives (Araneae: Oxyopidae)}, journal = {Zootaxa}, volume = {4216}, year = {2017}, pages = {457-481}, author = {Santos, Adalberto J} } @article {8354, title = {New synonymies and a revalidation in the spider genera Eustala and Micrathena (Araneae: Araneidae)}, journal = {Zoologia}, volume = {30}, year = {2013}, pages = {221-226}, abstract = {

In this study, 10 nominal species of Eustala Simon, 1895 are synonymized with other species of the genus, mostly based on matching males and females erroneously described as different species. Parawixia rimosa (Keyserling, 1892) is considered a senior synonym of Eustala decemtuberculata Caporiacco, 1955. Eustala isosceles Mello-Leitão, 1939 is transferred to Kapogea Levi, 1997 and considered a senior synonym of Kapogea alayoi (Archer, 1958) based on abdomen shape and coloration. Micrathena beta Caporiacco, 1947 is redescribed, illustrated and transferred from Linyphiidae back to Araneidae. This species can be easily distinguished from other members of the genus by the male palpus with an enlarged and modified paracymbium and a narrower hook as a conductor. Micrathena sanctispiritus Brignoli, 1983 is removed from the synonymy with M. lindenbergi Mello-Leitão, 1940 and considered a senior synonym of M. guanabara Levi, 1985.

}, author = {Levi, Herbert W and Santos, Adalberto J} } @article {8286, title = {A revision of the Neotropical species of the lynx spider genus Peucetia Thorell 1869 (Araneae: Oxyopidae)}, journal = {Insect Systematics and Evolution}, volume = {34}, year = {2003}, pages = {95-116}, abstract = {

The spider genus Peucetia includes 54 species of medium-sized and widely distributed spiders. The majority of its species occurs in the tropical regions, of which only the African fauna has been recently revised. In the Neotropical Region 26 species were described, of which 17 are here synonymyzed. Peucetia tranquillini Mello-Leit\ão 1922, P. rubrigastra Mello-Leit\ão 1929, P. meridionalis Mello-Leit\ão 1929, P. villosa Mello-Leit\ão 1929, and P. viridisternis Mello-Leit\ão 1945 are considered junior synonyms of P. flava Keyserling 1877. Eight names, Peucetia similis Keyserling 1877, P. amazonica Mello-Leit\ão 1929, P. heterochroma Mello-Leit\ão 1929, P. maculipedes Piza 1938, P. trivittata Mello-Leit\ão 1940, P. duplovittata Mello-Leit\ão 1941, and P. roseonigra Mello-Leit\ão 1943 and Tapinillus argentinus Mello-Leit\ão 1941 are considered junior synonyms of P. rubrolineata Keyserling 1877. Both senior species are extremelly common, occurring from Colombia to northern Argentina. Peucetia macroglossa Mello-Leit\ão 1929, recorded only from Central Brazilian Amazonia and Guyana is considered a senior synonym of P. melloleitaoi Caporiacco 1947. Two species occur from Southern USA to northern Colombia: Peucetia viridans (Hentz 1832) and P. longipalpis F. O. P.-Cambridge 1902. The former is recognized as a senior synonym of P. poeyi (Lucas 1857), P. bibranchiata F. O. P.- 1902 and P. rubricapilla Petrunkevitch 1925 and the later as a senior synonym of P. cauca Louren\ço 1990. Peucetia viridis (Blackwall 1858), known from Africa, southern Spain and Middle East is newly recorded from the West Indies. One new species, Peucetia cayapa sp. n., is described and illustrated based on males and females from Ecuador and Peru. Peucetia caldensis Garcia-Neto 1989, from Brazil, is transferred to Tapinillus Simon 1898. The type specimens of three species, P. quadrilineata Simon 1891 and P. thalassina (C. L. Koch 1847) from Central America, and P. smaragdina Mello-Leit\ão 1941 from Colombia are probably lost. Since their original descriptions are not sufficiently clear for their recognition, they are considered nomina dubia.

}, issn = {1399-560X}, doi = {10.1163/187631203788964863}, author = {Santos, Adalberto J and Brescovit, Antonio D} } @article {8260, title = {A revision of the Neotropical nursery-web spider genus Architis (Araneae: Pisauridae)}, journal = {Zootaxa}, volume = {1578}, year = {2007}, pages = {1-40}, author = {Santos, Adalberto J} } @article {8259, title = {A phylogenetic analysis of the nursery-web spider family Pisauridae, with emphasis on the genera Architis and Staberius (Araneae: Lycosoidea)}, journal = {Zoological Scripta}, volume = {36}, year = {2007}, pages = {489-507}, abstract = {

This study presents a general cladistic analysis of pisaurid genera, with emphasis on the Neotropical genera Architis Simon and Staberius Simon. The analysis was based on a matrix with 21 terminal taxa: eight species of Architis, Staberius spinipes (Taczanowski), seven exemplars of other pisaurid genera and five outgroup taxa. These terminals were scored for 59 morphological and three behavioural characters. An analysis with all characters equally weighted resulted in two most parsimonious trees, differing only in the position of Architis colombo Santos. In both trees Pisauridae arouse as a monophyletic group, and the exemplars of Architis composed a clade with S. spinipes. Contrary to hypotheses from the literature, Thalassius Simon emerged as sister-group of all remaining pisaurids, not as a close relative of Dolomedes Latreille. The genera Tinus F.O.P. -Cambridge and Thaumasia Perty appeared in the trees as the closest relatives of Architis and Staberius Simon. The analysis strongly supported S. spinipes as the sister-group of A. helveola (Simon), indicating that Architis as currently delimited is paraphyletic. Based on these results, Staberius is considered a subjective junior synonym of Architis. Additionally, the genus Mimicosa Petrunkevitch, originally described in Tetragnathidae, is transferred to Pisauridae and considered a junior synonym of Architis. Two species are proposed as junior synonyms of A. spinipes comb.n. Mimicosa spinosa Petrunkevitch and Staberius lemoulti Caporiacco.

}, author = {Santos, Adalberto J} }