Arthropoda Cytogenetics


Cytogenetics of Arthropoda Spider database Scorpion database Pseudoscorpion database Harvestmen database Chromosomal analyses

Leonardo Sousa Carvalho

Graduated in Biology (2006)
MSc in Zoology (2008)
Students (BSc.)
Adreany Silveira Lopes
Naiara Thais Vilarinho
Fábio dos Santos Silva

Research Interests

Arachnida (Araneae, Scorpiones and Solifugae), biodiversity inventories, systematics and evolution, community ecology, population ecology and teaching of zoology.
Current Research Projects

- Biodiversity Inventory of Selected Groups of Invertebrates of the Brazilian Semiarid – PPBio Semiárido.
The Brazilian Semiarid is one of the most unknown region of the country and harbors a unique fauna, composed of hundreds of undescribed invertebrate taxa, including families, genera and species. This projects aims to provide an overview of the species richness of numerous invertebrate taxa, including spiders, scorpions, harvestman, sun-spiders, termites, butterflies, moths, bees, wasps, fruit flies, praying mantis and mosquitoes, among others, from the Brazilian Semiarid. Besides, the description of new taxa and the continuous formation of new researchers are also objected.

- Local determinants of the arthropod fauna in a semiarid region in northeastern Brazil.
What does determine the arthropod species richness and composition on a specific locality? The aim of this project is to analyze a large number of biotic and abiotic variables and the arthropod species richness and composition, searching for robust positive or negative relations. Then, if any of the variables measured could explain the diversity pattern observed, it would be possible to preview the impact on the arthropod fauna owing to anthropogenic impact in natural environments, such as clear cutting or firing. The experiment is going to be conducted in a 500 ha farm, inside a 25 ha area, subdivided into 16m² plots. Forty five plots (three sampling expeditions of fifteen plots) will be sorted randomly, where a protocol of arthropod, soil and vegetation structure sampling will be carried out. The sampling expeditions will be carried out in the driest season of the area, during the raining season and after the raining season to sample this variation. The variables measured are: herb biomass, bush and arboreal biomass, total biomass, canopy cover, dead vegetation mass, plant species richness, soil composition (in relation to sand and clay proportions), percentage of specific elements (Fe, Ca, Zn, K) in the soil, soil granulometry, soil temperature and soil moisture.

Recent Publications


- Carvalho LS, Gomes JO, Neckel-Oliveira S, Lo Man Hung NF. Microhabitat use and intraspecific associations in the whip spider Heterophrynus longicornis (Arachnida: Amblypygi) in forest fragments formed by the Tucuruí Dam lake, Pará, Brazil. Journal of Natural History, 46: 1263-1272, 2012.

- Lo Man Hung NF, Marichal R, Candiani DF, Carvalho LS, Indicatti RP, Bonaldo AB, Cobo DHR, Martinez AF, Tselouiko S, Praxedes C, Brown G, Velasquez E, Decaens T, Martins M, Lavelle P. Impact of different land management on soil spiders (Arachnida, Araneae) in two Amazonian areas in Brazil and Colombia. The Journal of Arachnology, in press, 2011.

- Araujo D, Mattos VF, Giroti AM, Kraeski MG, Carvalho LS, Brescovit AD. Cytogenetical characterization of six orb-weaver species and review of cytogenetical data for Araneidae. The Journal of Arachnology, in press, 2011.

- Carvalho LS, Oliveira-Marques FN, Silva PRR. Arachnida, Amblypygi, Heterophrynus longicornis (Butler, 1873), State of Piauí, Northeastern Brazil: distribution extension. Check List, 7: 267-269, 2011.

- Dias SC, Carvalho LS, Bonaldo AB, Brescovit AD. Refining the establishment of guilds in Neotropical spiders (Arachnida: Araneae). Journal of Natural History, 44: 219-239, 2010.

- Carvalho LS, Dias SC, Candiani DF, Bonaldo AB. On the female of Metagonia taruma (Araneae: Pholcidae), ecology of the pholcid spiders in the Urucu River Basin, Amazonas, Brazil and new records from Brazilian Amazonia. Zoologia, 27: 431-439, 2010.

- Carvalho LS & Avelino MTL. Composição e diversidade da fauna de aranhas (Arachnida, Araneae) da Fazenda Nazareth, Município de José de Freitas, Piauí, Brasil. Biota Neopropica , 10: 21-31, 2010.

- Carvalho LS, Candiani DF, Bonaldo AB, Suesdek L., Silva PRR. A new species of the sun-spider genus Mummucia (Arachnida: Solifugae: Mummucidae) from Piauí, northeastern Brazil. Zootaxa, 2690, 19-31, 2010.

- Pinto-da-Rocha R & Carvalho LS. A new species of Sickesia (Laniatores: Stygnidae: Opiliones) and new records for the State of Piauí, Brazil. Zoologia, 26, 337-342, 2009.

- Carvalho LS, Santos MPD, Dias SC. Escorpionismo na zona rural de Teresina, Estado do Piauí: relato de casos de envenenamento. Revista da Sociedade Brasileira de Medicina Tropical, 40: 491-491, 2007.

- Carvalho LS, Bonaldo AB, Brescovit AD. The first record of the family Cithaeronidae (Araneae, Gnaphosoidea) to the new world. Revista Brasileira de Zoologia, 24: 512-514, 2007.

Book Chapters

- Bonaldo AB, Carvalho LS, Pinto-da-Rocha R, Tourinho AL, Miglio LT, Candiani DF, Lo Man Hung NF, Abrahim NS, Rodrigues BVB, Brescovit AD, Saturnino R, Bastos NC, Dias SC, Silva BJF, Pereira-Filho JMB, Rheims CA, Lucas SM, Polotow D, Ruiz GRS, Indicatti RP. Inventário e história natural dos aracnídeos da Floresta Nacional de Caxiuanã.. In: LISBOA, P.L.B.. (Org.). Caxiuanã: desafios para a conservação de uma Floresta na Amazônia.. Belém: MPEG, 577-622, 2009.

Courses Taught

Introduction to Arachnology
Terrestrial Arthropods Sampling


Cytogenetics of Arthropoda Spider database Scorpion database Pseudoscorpion database Harvestmen database Chromosomal analyses