Results 11 to 20 of about 1,310 (126)

First Record of Pediobius pyrgo Walker (Hymenoptera: Eulophidae) in South America and its Emergence from Egg Sacs of Latrodectus geometricus C. L. Koch (Araneae: Theridiidae)

EntomoBrasilis, 2015
We record the first time the occurrence of Pediobius pyrgo (Walker) (Hymenoptera: Eulophidae) for South America. This is also the first report of P. pyrgo emerging from egg sacs of Latrodectus geometricus C. L. Koch (Araneae: Theridiidae).
Karine Schoeninger, Diego Pádua, Lidianne Salvatierra, Marcio Oliveira   +3 more
doaj   +4 more sources

First Records of Black Widow Spider Latrodectus Walckenaer (Araneae: Theridiidae) in Oman

EntomoBrasilis, 2022
The present communication deals with a faunistic study on two species of Latrodectus Walckenaer with medically important issues from Oman. Several specimens of Latrodectus have been collected at various localities in Sultanate of Oman.
Ali Al-Jahdhami, Ali Al-Raeesi, Said Al-Rashdi   +2 more
doaj   +2 more sources

Distribución y modelaje de nicho ecológico, comentarios biogeográficos y taxonómicos del género de arañas Latrodectus (Araneae: Theridiidae) de México [PDF]

Revista Mexicana de Biodiversidad, 2021
El género de arañas Latrodectus está conformado actualmente por 32 especies, 3 en México: Latrodectus mactans, Latrodectus hesperus y Latrodectus geometricus (introducida).
Luis A. Cabrera-Espinosa, Alejandro Valdez-Mondragón   +1 more
doaj   +2 more sources

Urban Environments Aid Invasion of Brown Widows (Theridiidae: Latrodectus geometricus) in North America, Constraining Regions of Overlap and Mitigating Potential Impact on Native Widows [PDF]

Frontiers in Ecology and Evolution, 2021
Urbanization is a major cause of biotic homogenization and habitat fragmentation for native communities. However, the role of urbanization on the success of biological invasions on a continental scale has yet to be explored.
Melissa Sadir, Katharine A. Marske
doaj   +2 more sources

Endosymbiont diversity across native and invasive brown widow spider populations [PDF]

Scientific Reports
The invasive brown widow spider, Latrodectus geometricus (Araneae: Theridiidae), has spread in multiple locations around the world and, along with it, brought associated organisms such as endosymbionts.
Monica A. Mowery, Laura C. Rosenwald, Eric Chapman, Yael Lubin, Michal Segoli, Thembile Khoza, Robin Lyle, Jennifer A. White   +7 more
doaj   +2 more sources

Invasive Spiders and Their Microbiomes: Patterns of Microbial Variation in Native and Invasive Species in Hawai'i. [PDF]

Ecol Evol
We investigated how gut microbiota and endosymbionts influence the success of native and invasive spiders in Hawaiian and mainland environments. Gut microbial composition was shaped more by local environmental conditions than invasion status, whereas invasive species generally harbored fewer endosymbionts, with abundance varying by site. These findings
Pfau MJ, Weber S, Kennedy S, Krehenwinkel H, Roderick G, Gillespie R.   +5 more
europepmc   +2 more sources

The first report of the widow spider Latrodectus elegant (Araneae: Theridiidae) from India

Journal of Threatened Taxa, 2012
The widow spider genus Latrodectus Walckenaer, 1805, in India is represented by three species L. erythromelas Schmidt & Klaas, 1991, L. geometricus C.L. Koch, 1841 and L. hasselti Thorell, 1870.
A. Kananbala, K. Manoj, M. Bhubaneshwari, A. Binarani, M. Siliwal   +4 more
doaj   +2 more sources

Aggregation Behavior in Spiderlings: a Strategy for Increasing Life Expectancy in Latrodectus geometricus (Araneae: Theridiidae) [PDF]

Sociobiology, 2014
Studies on the biology of Latrodectus geometricus are scarce, especially on the behavior and life expectancy of the species. In this study we investigated the importance of the aggregation behavior of juveniles on life expectancy and longevity of the ...
William Fernando Antonialli-Junior, Ingrid Guimarães   +1 more
doaj   +2 more sources

Presencia de la araña viuda marrón Latrodectus geometricus (C. L. Koch, 1841) (Araneae: Theridiidae) en el Campus de la Universidad de Panamá, Ciudad de Panamá, Panamá [PDF]

Revista Chilena de Entomología
En Panamá, Latrodectus geometricus se ha registrado desde 1925. A pesar de ello, existen pocos registros de su presencia en el país. En el presente estudio, se observaron y recolectaron 68 arañas viudas marrón en el Campus Central de la Universidad de ...
Juan J. Lezcano, Lyska Y. Castillo E., Anette Garrido-Trujillo, Darwin Díaz-Quirós, Roberto A. Cambra, Roberto J. Miranda   +5 more
doaj   +2 more sources

Phylogenetic analyses and description of a new species of black widow spider of the genus Latrodectus Walckenaer (Araneae, Theridiidae) from Mexico; one or more species?

European Journal of Taxonomy, 2023
A new species of the spider genus Latrodectus Walckenaer, 1805 from Mexico is described based on an integrative taxonomic approach. Latrodectus occidentalis Valdez-Mondragón sp. nov.
Alejandro Valdez-Mondragón, Luis A. Cabrera-Espinosa   +1 more
doaj   +1 more source