Six species of the genus Picromerus Amyot and Serville from China were reported, in which, Picromerus elevatus sp. nov. from Yunnan province, was described as new to science. Drawings and photographs of genital characters, photographs of imagoes in dorsal and ventral views, and some diagnostic characters were provided, together with a detailed key to the six species occurring in China. The type...

Theridiidae is a derived family within the Araneoidea clade. In contrast to closely related groups, the 2n(male) = 20+X(1) X (2) with acro/telocentric chromosomes is the most widespread karyotype among the theridiid spiders. In this work, the cytogenetic analysis of Argyrodes elevatus revealed original chromosome features different from those previously registered for Theridiidae, including the...

Five new Chinese species of Cephennodes (s. str.) are described: C. bicavatus sp. n. (Guangdong), C. pseudobos sp. n. (Guangxi), C. huapingensis sp. n. (Guangxi), C. elevatus sp. n. (Guangxi), and C. gaozhaianus sp. n. (Guangxi). Cephennodes qiongdaoanus Jałoszyński and C. capricornis Jałoszyński are recorded for new localities in the provinces of Guangxi and Hainan, respectively. Diagnostic ch...

This study investigates predation by the vent zoarcid fish Thermarces cerberus through gastrointestinal analyses of 27 specimens collected with the submersible ALVIN at vents at 91500N on the East Pacific Rise. T. cerberus fed most frequently on gastropod mollusks (mainly Lepetodrilus elevatus) and amphipod crustaceans (mainly Ventiella sulfuris). Species found occasionally in high abundance in...

Background Controversy exists regarding the structural and functional causes of hallux limitus including metatarsus primus elevatus, long first metatarsal, first ray hypermobility, shape of the first metatarsal head and the presence of hallux interphalangeus. Papers have reported on the radiographic evaluation of these measurements in feet affected by hallux limitus, however no study to date ha...

* Arthropods Laboratory, Butantan Institute. Avenida Vital Brazil, 1500, Postal Code 05503-900. email: [email protected] ** Program of Post-Graduation in Animal Diversity, Federal University of Bahia; Program of Post-Graduation in Neurosciences and Behavior, University of São Paulo. 1. This paper is part of a Master’s study defended by M. C. Silveira at the Post-Graduate Program in Neurosci...

Deep-sea hydrothermal vents are subject to major disturbances that alter the physical and chemical environment and eradicate the resident faunal communities. Vent fields are isolated by uninhabitable deep seafloor, so recolonization via dispersal of planktonic larvae is critical for persistence of populations. We monitored colonization near 9°50'N on the East Pacific Rise following a catastroph...

The mitogenome is an important tool for researching the evolution of metazoan animals. However, until now, only few mitochondrial genes Pseudorhombus pentophthalmus have been reported. Here, we report complete P. pentophthalmus, assembled using Illumina platform. circular 16,684 bp in length, has a bias A+T content 52.78%, encodes 37 (13 protein-coding genes, 22 tRNA 2 rRNA genes), and control ...