Results 111 to 120 of about 75,944 (285)

Vespidae (Insecta: Hymenoptera) of Puerto Rico, West Indies [PDF]

open access: yes, 2011
The vespid fauna of Greater Puerto Rico is reviewed (Hymenoptera: Vespidae). Three new species are described, Ancistrocerus isla Carpenter, Euodynerus jeitita Carpenter and Genaro, and Omicron aridum Carpenter and Genaro.
Carpenter, James M., Genaro, Julio A.
core   +1 more source

Phylogenetic reconstruction and species delimitation in Stipeae with special reference to Stipa (Poaceae, Pooideae) using mitochondrial genomes

open access: yesCladistics, EarlyView.
Compared to plastid genomes, plant mitochondrial genomes have been less frequently used for species discrimination and phylogenetic studies due to assembly challenges, lower substitution rates and rapid structural evolution. However, this study demonstrates that mitochondrial genome fragments can be valuable for both molecular species identification ...
Katarzyna Krawczyk   +4 more
wiley   +1 more source

Scorpions from the primeval subgenus Archaeotityus produce putative homologs of Tityus serrulatus toxins active on voltage-gated sodium channels

open access: yesJournal of Venomous Animals and Toxins including Tropical Diseases, 2012
It has been proposed that the subgenus Archaeotityus comprises the most ancient species group within the medically important scorpion genus Tityus. cDNA encoding sodium-channel active toxins from the type species of this subgenus, Tityus clathratus ...
A Borges   +3 more
doaj   +1 more source

The Culicoides of the subgenus Avaritia (Diptera: Ceratopogonidae) in the Palaearctic region: through unsuspected diversity with epidemiologic implications [PDF]

open access: yes, 2012
The biting midges of the genus Culicoides (Diptera: Ceratopogonidae) are known vectors of pathogens especially Orbivirus of the Reoviridae family such as bluetongue, african horse sickness, epizootic hemorrhagic disease and more recently Schmallenberg ...
Balenghien, Thomas   +5 more
core  

Deterring egg predators with faecal strings is more efficient when eggs are aggregated

open access: yesEcological Entomology, EarlyView.
Egg aggregation and faecal strings interact to reduce predation risk. Faecal strings enhance egg survival, but only at higher egg densities. Multiple antipredator traits are needed for effective egg defence. Abstract Predation can be a great source of mortality for insect eggs. Thus, female insects use multiple strategies to reduce it.
Yueqing An, Peter A. Hambäck
wiley   +1 more source

The conservatism of prairie pollinators according to experts and empiricism

open access: yesInsect Conservation and Diversity, EarlyView.
We derived ecological conservatism values for prairie pollinators using expert opinion and analysis of remnant fidelity. Expert values were potentially biased and struggled to differentiate between remnant and non‐remnant prairie sites Empirical values showed advantages for pollinator‐based site assessment and prioritization in prairie regions ...
Jason T. Bried   +3 more
wiley   +1 more source

Studies in the Sphaerocarpales (Hepaticae) from southern Africa. 3. The genus Riella and its local species

open access: yesBothalia: African Biodiversity & Conservation, 2000
Hepaticae, Riella Mont., R. affinis M.Howe & Underw.. R. alatospora Wigglesworth. R. capensis Cavers. Riellaceae Engl., R. echinospora Wigglesworth,  R. purpureospora Wigglesworth, Riellineae R.M.Schust., southern Africa. Sphaerocarpales Cavers, subgenus 
S. M. Perold
doaj   +1 more source

A taxonomic review of the subtribe Pericalina (Coleoptera: Carabidae: Lebiini) in the Western hemisphere : with descriptions of new species and notes about classification and zoogeography [PDF]

open access: yes, 2000
A taxonomic review of the lebiine sub tribe Pericalina in the Western Hemisphere, this paper includes a treatment of the genus-groups, a key to the genera, keys to subgenera, species groups, and species of each polybasic genus, descriptions of new ...
Ball, George E., Shpeley, Danny
core   +1 more source

Solitary oil‐collecting bee in cities: Habitat suitability and lack of population structuring in Centris analis

open access: yesInsect Conservation and Diversity, EarlyView.
Lack of genetic population structure in urban populations of Centris analis. Low morphological differentiation across four phytogeographical regions in Brazil. Monogyny‐monandry mating system in C. analis. Abstract The decline of insect populations worldwide has raised concerns about the negative impact on ecosystem services, particularly pollination ...
Leandro Pereira Rezende   +4 more
wiley   +1 more source

Two new species of the subgenus Peytonulus of Sabethes (Diptera: Culicidae) from Colombia

open access: yesMemorias do Instituto Oswaldo Cruz, 1995
The adults and male genitalia of two new species of Sabethes subgenus Peytonulus are described from Colombia. The male genitalia are illustrated and the species are distinguished from one another and other members of the subgenus.
Ralph E. Harbach
doaj   +1 more source

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