Maria Razo

National Autonomous University of Mexico | UNAM · Department of Biology

En este escrito se aborda el problema de la pérdida de la diversidad de insectos en el mundo y en México, con la finalidad de hacerlo evidente y conocer las consecuencias que pueden derivarse de esta situación, así como las causas principales que la provocan, con ejemplos concretos basados en experiencias personales. Finalmente, se aportan algunas...

An updated checklist of the caddisflies from the State of Oaxaca, Mexico is presented, based primarily on a bibliographic review. Fourteen families, 44 genera and 216 species of caddisflies have been recorded, 38 (17.51%) of which are endemic, and 9 species are recorded for the first time from Oaxaca. For each species, we describe its geographic di...

We analyzed the alpha and beta components of male Trichoptera diversity along an altitudinal gradient ranging from 136 to 2432 m a.s.l. by studying five assemblages of adult male caddisflies in five streams of the Sierra de Juárez, Oaxaca, Mexico. Samples were collected with light traps in the “nortes” (February) and rainy (October) seasons of 2016...

Resumen: El objetivo de este estudio fue conocer la calidad del agua con base en las familias de macroinvertebrados acuáticos presentes en seis sitios del río Amanalco (México). En cada sitio se midió temperatura, conductividad, pH y concentración de oxígeno disuelto, concentración de fósforo total, demanda química de oxígeno (DQO), nitratos, sulfa...

Atopsyche (Atopsyche) jujmi sp. nov. and Atopsyche (Atopsyche) bifurcata sp. nov. (Trichoptera: Hydrobiosidae) are described and illustrated, rising to 20 the known species from Mexico in this genus. A second record of A. (Atopsyche) pilcomayo Schmid is reported, which up to date was known only from the type locality in Oaxaca State, a redescriptio...

The distributional patterns of 120 species of caddisflies recorded in the Sierra de Juarez, Oaxaca, were analyzed by means of Parsimony Analysis of Endemicity with Progressive Character Elimination and the search for generalized tracks to discern the biogeographic complexity and better understand why it is a highly biodiverse area. Analysis was bas...

The diversity of caddisflies from Morelos State in Mexico is descibed, their ecological, cultural and economic importance is detailed, as well as their conservation status and the threats to which these insects are subject.

This study examined the flight activity of adult caddisflies (order Trichoptera) in a pine-oak forest in México. Specimens were collected near the locality of Puente de los Trabajos, Sierra de Juárez, Oaxaca State using blacklight traps during four nights between 28 October and 13 November 2015. A total of 1117 specimens were collected, belonging t...

Adults of Trichoptera were collected in four sites in Santa Catarina Lachatao, Oaxaca, México, using black light traps and entomological nets. A total of 12 families, 23 genera, and 37 species were recorded. Four new species of Trichoptera: Wormaldia noveloi n. sp., Lepidostoma zapoteca n. sp., Phylloicus gomezi n. sp., and Ochrotrichia buenoi n. s...

DNA barcoding was intended as a means to provide species-level identifications through associating DNA sequences from unknown specimens to those from curated reference specimens. Although barcodes were not designed for phylogenetics, they can be beneficial to the completion of the Tree of Life. The barcode database for Trichoptera is relatively com...

Soil fauna is essential for ecosystem dynamics as it is involved in biogeochemical processes, promotes nutrient availability, and affects the animal communities associated with plants. In this study, we examine the possible relationship between the soil microarthropod community on foliage production and quality of the shrub Pittocaulon praecox. We...

Community structure of soil arthropods associated to Pittocaulon (Senecio) praecox was investigated in two sites with different vegetal cover in El Pedregal de San Ángel Ecological Reserve, South of Mexico City during thirteen-month period. The relationship of composition and abundance with soil variables was studied. A total of 101 483specimens be...