Recently added articles from Journal of Arachnology:
Elongated pedicillate setae: a putative sensory system and synapomorphy of spiders.(Report)
Sep 01, 2007; Agnarsson, Ingi ... ABSTRACT. We survey spiders from 43 families, 62 genera, and three arachnid outgroups for the presence and diversity of elongated pedicillate setae (EPS)--a complex system of probably sensory setae hitherto undocumented outside Theridiidae. Although not present in all spiders, these setae ...
A new species of Troglohyphantes (Araneae, Linyphiidae) from the western Italian Alps.(Report)
Sep 01, 2007; Isaia, Marco ... ABSTRACT. Troglohyphantes bornensis, a new species from the western Italian Alps, is here described. According to the features of the male palp and female epigynum the new species can be assigned to Fage's III Group, Deeleman-Reinhold's marqueti group and Pesarini's microcymbium complex ....
The spider genus Dysdera (Araneae, Dysderidae) in central Europe: revision and natural history.(Report)
Sep 01, 2007; Rezac, Milan ... ABSTRACT. Nine species of the genus Dysdera were found to occur in central Europe: D. adriatica Kulczynski 1897, D. crocata Koch 1838, D. dubrovninnii Deeleman-Reinhold 1988, D. erythrina (Walckenaer 1802), D. ninnii Canestrini 1868, D. hungarica Kulczynski 1897, D. lantosquensis Simon ...
A new species in the wolf spider genus Allotrochosina from New South Wales, Australia (Araneae, Liycosidae).(Report)
Sep 01, 2007; Framenau, Volker W. ... ABSTRACT. The venoniine wolf spider genus Allotrochosina Roewer 1960 currently includes two species, A. schauinslandi Simon 1899 from New Zealand (type species) and A. karri Vink 2001 from Western Australia. A third species of this genus, A. walesiana new species from New South Wales, ...
A new host record for Dasychernes inquilinus (Arachnida, Pseudoscorpiones, Chernetidae), with an overview of pseudoscorpion-bee relationships.(Report)
Sep 01, 2007; Gonzalez, Victor H. ... ABSTRACT. Dasychernes inquilinus Chamberlin 1929, the type species of the genus, was described from specimens taken from colonies of the stingless honey bee Melipona salti Schwarz 1932 (Hymenoptera, Apidae). For the first time since its description, we report D. inquilinus from a nest of ...
Hunting the hunters: spatial and temporal relationships of predators that hunt at the same sites.(Report)
Sep 01, 2007; Morse, Douglass H. ... ABSTRACT. Newly emerged crab spiderlings Misumena vatia (Clerck 1757) that recruit to goldenrod Solidago spp. inflorescences are subject to predation by small jumping spiders (Salticidae), principal among them being middle-instar Pelegrina insignis (Banks 1892). I censused goldenrod ...
Respiratory refinements in the mygalomorph spider Grammostola rosea Walckenaer 1837 (Araneae, Theraphosidae).(Report)
Sep 01, 2007; Canals, M. ... ABSTRACT. In this study we hypothesized that Grammostola rosea Walckenaer 1837, an active predator of large size that depends on its two paired book lungs for respiration, would have a refined low energy strategy based on its thin air-hemolymph barrier. The morphology of book lungs and the ...
Jumping spiders associate food with color cues in a T-maze.(Report)
Sep 01, 2007; Jakob, Elizabeth M. ... ABSTRACT. Salticid spiders are a tractable group for studies of learning. We presented Phidippus princeps Peckham & Peckham 1883 with the challenging task of associating prey with color cues in a T-maze. Experimental spiders were given the opportunity to learn that a cricket was hidden ...
Social encounters between male brown spiders, Loxosceles gaucho (Araneae, Sicariidae).(Report)
Sep 01, 2007; Stropa, Andre Augusto ... ABSTRACT. Twenty-two interactions between males of Loxosceles gaucho Gertsch 1967 were investigated in order to study its intrasexual interactions and level of aggressiveness. Aggression by lunges or bites was observed in just 22.7% of the trials and three behaviors were identified as ...
Hunting prey with different escape potentials--alternative predatory tactics in a dune dwelling salticid.(Report)
Sep 01, 2007; Bartos, Maciej ... ABSTRACT. Generalist predators hunt a wide range of prey that possess various characteristics affecting the predators' hunting success (e.g., size, ability to detect the threat and defend against it, potential for escape). Therefore, it can be expected that the predator should flexibly ...
Bird predation on spiders: ecological mechanisms and evolutionary consequences.(Report)
Sep 01, 2007; Gunnarsson, Bengt ... ABSTRACT. Birds are common predators of arthropods in many ecosystems but their impact on spiders has not been assessed. Therefore, the experimental evidence for bird predation effects on spider populations was examined. In particular, the present review focuses on the questions: what are ...
Juvenile Nephila (Araneae, Nephilidae) use various attack strategies for novel prey.(SHORT COMMUNICATIONS)(Report)
Sep 01, 2007; Higgins, Linden ... ABSTRACT. Nephila clavipes (Linnaeus 1767) and N. pilipes (Fabricius 1793) juveniles exposed to a novel and potentially dangerous prey item frequently attack using thrown silk. To quantify the frequency with which N. clavipes opt to use thrown silk, naive hand-reared small N. clavipes ...
On some Chilean jumping spider type specimens described by Nicolet (Araneae, Salticidae).(SHORT COMMUNICATION)(Report)
Sep 01, 2007; Ruiz, Gustavo Rodrigo Sanches ... ABSTRACT. The type specimens often of Nicolet's species of jumping spider from Chile were examined. In this paper we present seven new synonymies and two new combinations for these nominal species as well as a redescription and illustrations where necessary. Attus iricolor Nicolet 1849, ...
A protocol for digesting internal soft tissues and mounting spiders for scanning electron microscopy.(SHORT COMMUNICATION)(Report)
Sep 01, 2007; Alvarez-Padilla, Fernando ... ABSTRACT. We describe a simple protocol for digesting the internal soft tissues of spiders using an enzyme complex known as pancreatin. This technique is preferred over digestions with caustic agents because it better preserves the cuticle surface, allowing its study by means of scanning ...
A description of the female wolf spider Camptocosa texana (Araneae, Lycosidae).(SHORT COMMUNICATION)(Report)
Sep 01, 2007; Slowik, Jozef ... ABSTRACT. The female of Camptocosa texana Dondale, Jimenez & Nieto 2005 is described from Arizona. Females of C. texana are compared to those of C. parallela (Banks 1898), which differ from C. texana females in the color morphology of the carapace and the shape of the median septum. ...
Biology of Galeodes caspius subfuscus (Solifugae, Galeodidae).(SHORT COMMUNICATION)(Report)
Sep 01, 2007; Hruskova-Martisova, Martina ... ABSTRACT. This study reports on some observations on the biology of the Central Asian solifuge, Galeodes caspius subfilscus Birula 1937. Solifuges were active only during summer months. At other times, they were found in burrows located in sandy soils on southeast facing slopes. They were ...
The Miocene whipscorpion Thelyphonus hadleyi is an unidentifiable organic remain.(SHORT COMMUNICATION)(Report)
Sep 01, 2007; Dunlop, Jason A. ... ABSTRACT. The putative fossil whipscorpion Thelyphonus hadleyi Pierce 1945 (Arachnida: Uropygi) from the middle to late Miocene Monterey Formation of Cabrillo Beach, San Pedro, California is reassessed. It is shown here to be nothing more than a fortuitously shaped stain on the rock, ...
First record of Zimiris doriai (Araneae, Prodidomidae) in Brazil.(SHORT COMMUNICATION)(Report)
Sep 01, 2007; Almeida-Silva, Lina M. ... ABSTRACT. Spiders of the family Prodidomidae are widely distributed and at least three synanthropic species have been reported. In this work we present the first record of Zimiris doriai Simon 1882 from Brazil, appartently introduced accidentally, with specimens recorded in urban areas in ...
Carrion feeding by spiderlings of the cob-web spider Theridion evexum (Araneae, Theridiidae).(SHORT COMMUNICATION)(Report)
Sep 01, 2007; Barrantes, Gilbert ... ABSTRACT. The use of carrion to feed spiderlings has never previously been observed in spiders. Here we show that the theridiid Theridion evexum Keyserling 1884 stored dead insectan prey for up to one week prior to the emergence of spiderlings from the egg sac, and continued to feed ...
Replacement names for two orb-weaving spiders (Araneae, Araneidae, Araneus).(Report)
Sep 01, 2007; Levi, Herbert W. ... ABSTRACT. The name Araneus beebei Levi 1941 is replaced by Araneus aragua. Araneus raui Levi 1973 is replaced by Araneus missouri. The species Araneus phrygiatus (Walckenaer 1842) is not recognizable based on the original description and considered a nomen dubium. Keywords: ...
