Search results for "systematic"
showing 10 items of 7608 documents
Pseudorhynchus raggeanus nomen novum
2021
Massa, Bruno (2021): Pseudorhynchus raggeanus nomen novum. Zootaxa 4991 (3): 592-592, DOI: https://doi.org/10.11646/zootaxa.4991.3.9
Dorsthippus and Aethiopiacris: synonymic genera of Dwarf Grasshoppers of the Ethiopian highlands (Orthoptera: Acrididae)
2020
The grasshopper species of the genera Dorsthippus Donskoff, 1977 (D. baleensis) and Aethiopiacris La Greca, 1994 (A. parva) of the Ethiopian highlands are very poorly known. Little information is a...
Erratum: on the correct name of Scolocerca thomasi Massa, 2021 (Orthoptera, Tettigoniidae, Phaneropterinae) from Côte d’Ivoire
2021
Massa, Bruno (2021): Erratum: on the correct name of Scolocerca thomasi Massa, 2021 (Orthoptera Tettigoniidae, Phaneropterinae) from Côte d'Ivoire. Zootaxa 4963 (2): 400-400, DOI: https://doi.org/10.11646/zootaxa.4963.2.11
Earliest herbarium evidence for the occurrence of Lewinskya acuminata (Orthotrichaceae) in East Africa
2019
This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Bryology on 23th September 2019, available online: http://www.tandfonline.com/10.1080/03736687.2019.1655871
Upper Givetian and Frasnian (Middle and Upper Devonian) conodonts from Ampriú (Aragonian Pyrenees, Spain): global correlations and palaeogeographic r…
2012
This report describes for the first time a part of the Middle and Upper Devonian conodont sequence of the Sierra Negra Subfacies in the Aragonian Pyrenees (Spain), establishing the basis for further sound correlations both across the distinct Pyrenean facies and subfacies and on other relevant world areas. The description of 20 conodont taxa and their stratigraphical distribution permits recognition of two separate time intervals. The older one corresponds to the lower Upper Givetian (Middle Devonian), hermanni to crista- tus ectypus zones. The younger interval is uppermost Lower Frasnian to lower Middle Frasnian (Upper Devonian) and is equivalent to MN4-MN6 zones. The combination of litho-…
Coralline algal growth-increment widths archive North Atlantic climate variability
2011
Over the past decade coralline algae have increasingly been used as archives of paleoclimate information. Encrusting coralline algae, which deposit annual growth increments in a high Mg-calcite skeleton, are amongst the longest-lived shallow marine organisms. In fact, a live-collected plant has recently been shown to have lived for at least 850 years based on radiometric dating. While a number of investigations have successfully used geochemical information of coralline algal skeletons to reconstruct sea surface temperatures, less attention has been paid to employ growth increment widths as a temperature proxy. Here we explore the relationship between growth and environmental parameters in …
Eurhomalea exalbida (Bivalvia): A reliable recorder of climate in southern South America?
2012
Abstract Due to the lack of suitable high-resolution archives, regional and continental-scale climate dynamics of southern South America are not well understood. Shells of the long-lived, shallow-marine bivalve mollusk, Eurhomalea exalbida (Dillwyn), are likely to contain information on the past water temperatures. As yet, however, no rigorous calibration study has been presented so that growth history traits and the reliability of shell oxygen isotope-based temperature estimates remain unknown. Shell growth patterns and oxygen isotope ratios of four young specimens of E. exalbida from the Falkland Islands (Southwest Atlantic) were analyzed and cross-calibrated with environmental parameters…
Unique growth pattern of Metoposaurus diagnosticus krasiejowensis (Amphibia, Temnospondyli) from the Upper Triassic of Krasiejów, Poland
2013
Morphology and bone histology of femora, tibiae, and fibulae of the temnospondyl Metoposaurus diagnosticus krasiejowensis from the Upper Triassic locality of Krasiejow (Poland) are studied for the first time. The growth pattern of Metoposaurus as preserved in a small growth series of femora, shows a regular alternating sequence of fast and slow growth phases, which are interpreted as representing zones and annuli. The slow growth phases (annuli) of the inner and outer cortex as well as those of different specimens are of a regular broad thickness. Such broad annuli are so far unknown for any vertebrate and make the growth pattern for Metoposaurus unique. These slow growth phases always cont…
Raunoloma longiceps(Linnavuori, 1977) (Hemiptera: Heteroptera: Cydnidae): First Record from Uganda
2015
The present note reports the first Ugandan record of Raunoloma longiceps (Linnavuori, 1977), a rarely collected African burrower bug species (Hemiptera: Heteroptera: Cydnidae). This record increases the number of Cydnidae genera reported from Uganda to seven, with a total of 12 species. Cydnidae belong to the superfamily Pentatomoidea and are known by almost 700 species distributed in all zoogeographical regions of the world (Lis 1996, 1999, 2006; Lis & Lis 2014). Species of the family are well-known by the common name of burrower (or burrowing) bugs, because of their ability to dig into the ground. This behaviour is possible mainly due to their strong and well-developed tibial and coxal co…
Pretarsal structures in the family Cydnidae sensu lato (Hemiptera: Heteroptera: Pentatomoidea)
2010
New data on the pretarsus in Cydnidae sensu lato are presented; 56 species of 38 genera are studied based on the SEM techniques. Pretarsal structures in Cydnidae s.l. are demonstrated to be not uniform; some are typically pentatomoid, and some are atypical for Pentatomoidea. Structures associated with the unguitractor plate, described for the first time by Weirauch (2005) in Reduviidae, and not reported for Cydnidae s.l. in the past, are described for the first time.