Two new species of Dolichothele Mello-Leitão, 1923 are described from Brazil and Bolivia, D. mottai sp. n. from Distrito Federal and the state of Goiás, Brazil, and D. camargorum sp. n. from the state of Rondônia, Brazil, and the La Paz region, Bolivia. Males of the two new species resemble Dolichothele bolivianum (Vol, 2001) in having a small subapical keel on the distal embolus and females in particular by the short spermatheca. Dolichothele bolivianum is redescribed, and its geographical distribution is herein restricted to Bolivia and the state of Mato Grosso in Brazil.
ZooKeys 724: 1-20
Two new species of the genus Tmesiphantes from Serra do Espinhaço, state of Minas Gerais are described. They comprise the first records of the genus outside the Atlantic Forest. Furthermore, the examination of all type material of the genera Tmesiphantes and Melloleitaoina, which have been suggested as sister groups, showed that the thickness of femur III, used to distinguish between them, shows a continuous variation, and the taxonomic usage of this character is discussed.
Studies on Neotropical Fauna and Environment 47: 139-145
Two new species of Pamphobeteus Pocock 1901 are described from Brazil: Pamphobeteus crassifemur sp. nov. and
Pamphobeteus grandis sp. nov.; Pamphobeteus nigricolor, formerly described from Colombia, Ecuador and Bolivia, is
recorded from Brazil and its distribution in Ecuador and Bolivia is questioned. A new type of stridulatory organ is
described from legs III and IV of P. crassifemur sp. nov. The structure consists of spiniform setae. Stridulation occurs
when the spider moves the legs III and IV, sometimes while shedding urticating hairs.
Zootaxa 1826: 45-58 [p. 48, f. 1-12]
The genus
Cyriocosmus Simon, 1903 is revised based on most types and additional material from Argentina, Brazil, Colombia, Tobago Island and Venezuela. Two species are newly described from Brazil:
Cyriocosmus nogueira-netoi and
Cyriocosmus fernandoi. The species
Cyriocosmus fascia-tus (Mello-Leitão, 1930), formerly synonymized with
Cyriocosmus elegans, is revalidated.
Metrio-pelma nigriventris (Mello-Leitão, 1939) and
Cyriocosmus butantan Pérez-Miles, 1998 are transferred to
Hapalopus Ausserer, 1875, proposing
Hapalopus nigriventris (Mello-Leitão, 1939) new combination and
Hapalopus butantan (Pérez-Miles, 1998) new combination. The female of
Hapalopus butantan is described for the first time. All 11 species of
Cyriocosmus are diagnosedand keyed. A cladistic analysis with 28 characters and 19 taxa was carried out. Searches using three phylogenetic packages found a single, totally resolved tree with the same topology.
Zootaxa 846: 1-31
The monotypic Brazilian genus
Sickius Soares & Camargo 1948 is revalidated, rediagnosed, and tentatively transferred to the
Ischnocolinae. The formerly unknown female of S. longibulbi Soares & Camargo 1948 is found to lack spermathecae. This unusual genital feature, not found in any other mygalomorph spider species, is described and discussed.
Journal of Arachnology 30: 519-526
A new species of the genus Ephebopus Simon, 1892, E. uatuman, is described from the Amazonean Region of Brazil. Concerning E. violaceus Mello Leitao, 1930, type misplaced or lost despite registered in the Arachnological Collection of the Museu Nacional do Rio de Janeiro, Brazil, we conclude, after the short description of the author, that this species exhibit characteristics of the genus Avicularia, since the first ocular row is very procurve. The total length of only 23mm, the design on the dorsal side of the abdomen and the division of the posterior tarsal scopulae suggests that the specimen is a juvenile. Therfore two are the Brazilian species of the genus Ephebopus: E. murinus and E. uatuman.
Mems Inst. Butantan 53: 161-166