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The collection of the Museo de Paleontología de Guadalajara, Jalisco, Mexico (MPG) contains fossils of vertebrates from
several localities in the State Jalisco, SW-Mexico. The localities are Miocene up to Pleistocene in age. Based on investigations during a visit at the MPG in 2003 a faunal list and a short characterisation of the faunal assemblage are presented in
comparison to the localities Rancho la Brea (California, USA) and Mina (Nuevo León, NE-Mexico). Potential projects for further investigations on the fossil material and the localities are proposed.
A father's story
(2004)
All across the world, in all walks of life, families everywhere look forward to Summer vacations as a way to spend meaningful time together. When my own children were young, I made it a point every year to take them to someplace exciting and new-Florida and New York in the United States, Switzerland and Italy in Europe, Ecuador and various Colombian cities in South America. I always hoped that, as adults, they would look fondly upon the memories they had of their vacation days with their father and one day do the same with their own children.
Although known and housed in German institutions since at least the 19th century, until now marine reptiles from the
Braunjura ß have never been described in detail. The strata have yielded plesiosaur, thalattosuchian and rare ichthyosaur
remains, all fragmentary, most likely due to their deposition in a shallow marine, high energy palaeoenvironment. Cervical
vertebrae, which are housed in the Staatliches Museum für Naturkunde Karlsruhe (State Museum of Natural History in
Karlsruhe), are described here and reveal the first elasmosaurid plesiosaurs reported to date from the German Dogger.
We present a species list of spiders collected over a period of more than 5 years in a rainforest reserve in central Amazonia
-Reserva Ducke. The list is mainly based on intense sampling by several methods during two years and frequent visual
sampling during 5 years, but also includes records from other arachnologists and from the literature, in total containing 506
(morpho-)specles in 284 genera and 56 families. The species records from this Neotropical rainforest form the basis for a
biodiversity database for Amazonian spiders with specimens from several Brazilian collections and the collection of the
State Museum of Natural History Karlsruhe, where it is housed. This database will in the future facilitate species identification of Neotropical spider collections, allow comparison of morphospecles and serve as an important background for biodiversity evaluation in natural and anthropogenic habitats and the recognition of species distribution and loss. For further evaluation of the structure of Neotropical spider assemblages and their ecological function we present an analysis of the guild structure of the fauna of Reserva Ducke, although we also emphasize the lack of knowledge on natural history and behavior for many of the species.
In this paper, we describe a new species of Mesoplophora collected from forest floor litter in southwestern Nigeria. Mesoplophora is a cosmopolitan genus of pytchoid mites that has been recorded from the Palaearctic region as well as Morocco
and Tchad in the Ethiopian region. M. ife an a is the first Mesoplophora species to be fully identified and described from Nigeria. Differences between this species, M. ifeana, and other Mesoplophora species recorded from Africa are observed in
respect of the number of spines on the sensillus, presence of two pairs of exobothridial setae and leg chaetotaxy. The lack of information on fine taxonomic details of adults and deutonymphs of M. africana from Tchad as well as the discrepancies in the description of certain morphological features such as organisation and chaetotaxy of the ventral plates as well as the nomenclature of setae on the aspis were noted. Attention was drawn to the unique combination of traits of both lower
and higher Oribatida in Mesoplophora, a trait which may be responsible for its ubiquitous distribution.
Four new species of scytodid spiders from Brazil are described: Scytodes becki sp.n. from Niquelandia and Scytodes
eleonorae sp.n. from Sao Domingos, both in the state of Goias; Scytodes skuki sp.n. from Aripuana, Mato Grosso and
Scytodes strussmannae sp.n. from Xapuri, Acre. Together with the synanthropic species S. globula Nicolet and the Brazilian species S. itapevi Brescovit & Rheims these four new species form a distinct group within the Neotropical Scytodes, herein named "globula group" New records for S. globula and S. itapevi are also reported.
This paper is the first of a series in which more information will be added to the existing on biogeographical distribution of oribatid mites. Here we describe a new species of a phthiracarid mite collected from forest floor litter in southwestern Nigeria. Differences between this species, Atropacarus (Hoplophorella) nigeriensis, and other Hoplophorella species are the foveoli on the aspis and notogaster, the shape of notogastric setae, as well as shapes and chaetotaxy of the genital and anal plates. More differences in taxonomically important features such as the morphological features of the infracapitulum and epimeron as well as leg chaetotaxy between this species and others could not be determined, not only because of lack of information on the latter in literature, but also because many type specimens are not available for dissection which must be done in order to reveal fine morphological details. Atropacarus (Hoplophorella) nigeriensis belongs to the "cucullata" group of Hoplophorella which possess one enlarged adanal seta. It differs from other members of this group in respect of adanoanal and tarsal chaetotaxy. Hoplophorella is considered as a subgenus of Atropacarus in this paper, because there is no evidence in literature that Hoplophorella as a group is a separate phylogenetic entity.
The mesofauna communities were assessed every three months (June 1997 to March 1999), in the litter and soil of a
polyculture system (POA and POC) and from a primary (FLO) and a secondary (SEC) forest. The highest densities were
obtained in POA, due to the dominance of Oribatida. The densities of Acari Oribatida and Collembola were notably lower in
the mineral soil. For non-Oribatid Acari, the same tendency was not clearly detected. In contrary to the other groups, the
highest densities of Collembola were found in FLO. In general, densities in the litter layer were higher. Therefore, strong differences were detected between 1997, an exceptionally dry year caused by the ”EI Niño” Southern Oscillation, and 1998.
The mesofauna population was lowest in 1997 Only in 1997, was the density in FLO, POA and POC higher in the soil fraction. The pattern in SEC was not the same because of the higher amount of litter. We hypothesized that the differences
between 1997 and 1998 were a result of: 1) a reaction of the mesofauna that migrated to the mineral soil during the
extremely dry period of 1997 and 2) a consequence of the litter layer reduction that occurred in 1997, causing lower mesofauna densities. Superimposed on the micro-climatic factors, we observed the influence of the condition of the litter layer on the mesofauna densities. Depending on the physical factors, there are years of high and others with low populations. Extremely wet years could also exert an influence on the soil mesofauna and studies of long-term periods are recommended. Although there was a tendency for the Acari Non-Oribatida biomass estimated in this study to be lower than in temperate forest, the values are however higher than values recorded for many tropical forests. On the contrary, Oribatida
and Collembola biomass were characterized by lower values compared to temperate forests.
An insect inclusion in Upper Cretaceous Burmese amber contained a well preserved flat bug, Archearadus burmensis gen.
n., sp. n., which is described and figured. It is distinguished from all known genera of Aradidae by various characters that
are discussed. A catalogue is given for Aradidae from Amber deposts described to date.