Author: Norman I. Platnick Publisher: ISBN: Category : Aschnaoonops Languages : en Pages : 102
Book Description
A new genus, Prodysderina, is established for a group of Neotropical oonopids belonging to the Dysderina complex and characterized by having a laterally incised, tuberculate, but unridged sternum, a groove connecting the posterior (but not the anterior) spiracles, and a male embolus with an elongated distal prong and a reduced proximal prong. Dysderina armata Simon is transferred to Prodysderina and selected as the type species; eight new species are described from Venezuela (P. megarmata, P. rollardae, P. janetae) and Colombia (P. piedecuesta, P. rasgon, P. santander, P. filandia, P. otun). The genus Aschnaoonops contains species that resemble those of Prodysderina but have a twisted (and usually basally widened) embolus in males, and a reduced genital atrium in females. That genus occurs in the Andes from Peru north to Colombia, east across northern South America, and north into the West Indies. Dysderina similis (Keyserling) and D. propinqua (Keyserling) from Colombia, and D. simla Chickering from Trinidad, are transferred to Aschnaoonops, and females of the two Keyserling species are described for the first time. One new species, A. silvae, has been taken by canopy fogging and appears to be widespread in the Amazonian portions of Peru, Ecuador, and Colombia. A total of 36 other new, ground-dwelling, microdistributed species are described: A. yasuni, A. tiputini, A. cosanga, A. ramirezi, A. jatun, and A. marshalli from Ecuador, A. leticia, A. orito, A. pira, A. paez, A. huila, A. meta, A. alban, A. chingaza, A. pamplona, A. pedro, and A. marta from Colombia, A. chorro, A. indio, A. tachira, A. tariba, A. teleferico, A. jaji, A. merida, A. aquada, A. masneri, A. trujillo, A. cristalina, A. bocono, A. simoni, and A. margaretae from Venezuela, A. malkini, A. caninde, and A. belem from Brazil, A. villalba from Puerto Rico, and A. gorda from the Virgin Islands. Another new genus, Bidysderina, is established for a group of species resembling those above in sternal structure but having differently constructed male palps; five new species (B. perdido, B. bifida, B. niarchos, B. wagra, B. cayambe) are described from Napo province, Ecuador.
Author: Carmen Viera Publisher: Springer ISBN: 3319657178 Category : Science Languages : en Pages : 448
Book Description
Within the last few decades, arachnology in the Neotropical region has experienced a great development filling the knowledge gap in one of the most diverse regions of the world. Nevertheless, large geographical areas remain poorly sampled, especially within the Amazon, and new genera and species have been continuously discovered, even in urban areas. In congruence with the recent improvements in research, several aspects of the ecology, behaviour and natural history of spiders, such as interactions with other predators and parasitoids, social interactions, dispersal patterns, habitat requirements, mating behaviors, among others, are being carefully investigated. These recent contributions incorporate substantial information on the preexisting knowledge on these subjects every year. Our main objective with this book is to present a summary on these new researches and on the currently knowledge on the main subjects involved in the general theme, emphasizing the contribution of the rich fauna of the Neotropical region to the research of behaviour and ecology of the spiders.
Author: Norman I. Platnick Publisher: ISBN: Category : Oonopidae Languages : en Pages : 38
Book Description
The goblin spider genus Oonopoides Bryant was established for a species from Cuba, Oonopoides maxillaris Bryant, and most of the species that have subsequently been assigned to the genus are from that island. The group is actually circum-Caribbean in distribution, but many of its members have been misplaced in the genus Oonops Templeton; here we treat those representatives of the genus that have been collected in North and Central America. Six specific names are transferred from Oonops to Oonopoides: O. endicus Chickering from Florida and the Bahama Islands, O. secretus Gertsch from Texas and Tamaulipas, O mitchelli Gertsch from Mexico, and O. pallidulus (Chickering), O. tenebus Chickering, and O. anoxus Chickering from Panama. Males of O. zullinii Brignoli from Mexico and females of O. secretus are described for the first time; O. tenebus is placed as the male, and hence a junior synonym, of O. pallidulus. The holotype of Oonops zeteki Chickering from Panama is a juvenile that probably belongs to Costarina Platnick and Dupérré and the name is placed as a nomen dubium. Eight new species are described: O. iviei from Florida and the Bahama Islands, O. catemaco, O. chicanna, and O. kaplanae from Mexico, O. hondo from Honduras, O. cristo and O. upala from Costa Rica, and O. cartago from Costa Rica and Panama.
Author: Norman I. Platnick Publisher: ISBN: Category : Oonopidae Languages : en Pages : 30
Book Description
The goblin spider genus Simonoonops Harvey has been known only from its Venezuelan type species, but the group occurs also in Guyana and the Lesser Antilles. Most of its members have been misplaced in the genus Dysderina Simon; D. princeps Simon, D. spinigera Simon, D. craneae Chickering, D. globina Chickering, D. soltina Chickering, and D. zinona Chickering are transferred to Simonoonops. Members of Simonoonops resemble those of Dysderina in having three transverse ridges on the sternum, but differ in lacking a groove connecting the anterior spiracles and having a more complex embolic region on the male palp. Two specific names are newly synonymized: S. orghidani (Dumitrescu and Georgescu) with S. craneae, and S. zinona with S. soltina. Six new species are described: S. simoni, S. grande, and S. andersoni from Venezuela, S. lutzi from Guyana, S. etang from Grenada, and S. chickeringi from Saint Vincent.
Author: Norman I. Platnick Publisher: ISBN: Category : Dysderina Languages : en Pages : 52
Book Description
The goblin spider genus Dysderina Simon is relimited to include only those members of the Dysderina complex that have three pairs of deep, steeply sided excavations extending from the sides of the sternum toward the midline; two species groups are recognized. The principalis group contains those species whose members have strong, transverse ridges connecting the posterior edges of each pair of sternal excavations, including the type species, D. principalis (Keyserling) from Colombia (the female of which is described for the first time), plus seven new species from Colombia (D. sasaima, D. cunday, D. amaca) and Ecuador (D. sacha, D. erwini, D. baehrae, D. excavata). The tiputini group contains species whose members lack transverse sternal ridges, and includes five new species from Ecuador (D. tiputini), Colombia (D. ayo, D. matamata, D. craigi), and Brazilian Amazonia (D. urucu). A new genus, Tridysderina, is established for a group of species whose members have a flat, smooth sternum with one or two transverse ridges at the level of coxae II and III, but without a transverse ridge at the level of coxa IV; the genus includes six new species from Ecuador (T. yasuni, T. jatun, T. galeras, T. archidona, T. tena, T. bellavista).
Author: Norman I. Platnick Publisher: ISBN: Category : Oonopidae Languages : en Pages : 64
Book Description
The goblin spider genus Pescennina Simon has been known only from females of its type species from Venezuela, whereas the more recently described genus Marsupopaea Cooke has been known only from males taken in Colombia. Discovery of the missing sexes, in both cases, indicates that these spiders belong to the Scaphiella complex; males have dorsal abdominal scuta that are absent in females. The presence, in the males of both type species, of a terminal, coiled embolus that can be held in an excavated "pouch" at the anterior edge of the sternum and is matched by coiled anterior ducts in the female genitalia, suggests that these taxa are congeneric. Marsupopaea is therefore newly synonymized with Pescennina, and its type species, M. sturmi Cooke, is placed as a junior synonym of P. cupida (Keyserling). Species of Pescennina occur widely in North, Central, and South America; many are apparently ant mimics, with color patterns (and sometimes a constricted abdomen) that enhance their antlike appearance. Although most of the species seem to be ground dwelling, with the extremely narrow geographic ranges typical of goblin spiders, at least four species inhabit the forest canopy, and at least one of those species is much more widespread. Males of the type species, P. epularis Simon, and females of P. cupida (Keyserling) are described for the first time; 16 new species are described: P. iviei, P. gertschi, P. sumidero, and P. ibarrai from Mexico; P. murphyorum from Nicaragua and Costa Rica; P. viquezi from Costa Rica; P. laselva from Costa Rica and Panama; P. fusca from Panama; P. arborea from Panama, Colombia, and Ecuador; P. magdalena and P. sasaima from Colombia; P. orellana from Ecuador; P. piura and P. loreto from Peru; P. grismadoi from Bolivia; and P. otti from southern Brazil.
Author: Norman I. Platnick
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Author: Carmen Viera
Author: Norman I. Platnick
Author: Norman I. Platnick
Author: Norman I. Platnick
Author: Norman I. Platnick
Author: Norman I. Platnick
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