New acanthodrilid earthworms of genera protozapotecia and trigaster from Cuba (annelida, crassiclitellata) Authors: Fragoso, Carlos, Rodríguez, Carlos

“…The new species are closely related to northeast and east Mexico (Protozapotecia and Zapatadrilus) and Puerto Rico and Virgin Islands earthworms (Trigaster). …”

Interespecies effect of sequential human medium use in the production of blastocysts of female ovis canadensis mexicana by interspecies handmade cloning Authors: Vazquez-Avendaño, José Roberto, Hernández-Martínez, Sarahí, Hernández-Pichardo, José Ernesto, Rivera-Rebolledo, Juan Arturo, Ambriz-García, Demetrio Alonso, Navarro-Maldonado, María del Carmen

“…This is the first study that reports the successful cloning of female O. c. Mexicana embryos in Mexico.…”

PATOGENICIDAD Y VIRULENCIA DE CEPAS DE BACILLUS THURINGIENSIS NATIVAS DEL ESTADO DE MORELOS SOBRE DIATRAEA MAGNIFACTELLA (LEPIDOPTERA: CRAMBIDAE) Authors: Fonseca G., Alicia, Peña Ch., Guadalupe, Trejo L., Adriana G., Lina G., Laura P., Rodríguez B., Luis Á., Hernández V., Víctor M.

“…Sugarcane is one of the most important industrial crops in Mexico, several insects feed on it, causing important economic losses. …”

Structure of a Scarabaeinae community: a numerical-behavioural study (Coleoptera: Scarabaeinae) Authors: Kohlmann, Bert, Sánchez Colón, Salvador

“…The structure of a Scarabaeinae community in the tropical mountains of México is studied using trophic and reproductiva characters, which were analyzed by multivariate methods (cluster and ordination analysis). …”

CONTRIBUTIONS TO A HISTORY OF MEXICAN DIPTEROLOGY . PA RT II.- THE BIOLOGIA CENTRALI-A MERICANA Authors: Papavero, Nelson, Ibáñez Bernal, Sergio

Efecto del diferente manejo de los pastizales y del ganado sobre los escarabajos coprófagos Ataenius apicalis Hinton y Ataenius scultor Harold (Scarabaeidae: Aphodiinae: Eupariini)... Authors: Martínez M, Imelda, Cruz R, Magdalena, Pierre Lumaret, Jean

“…This study was conducted on two pasture located on the coast of the State of Veracruz, Mexico, where the warm, very humid climate is marked by spring rains. …”

Factores abióticos y bióticos determinantes para la presencia de Batrachochytrium dendrobatidis en anfibios mexicanos Authors: García-Feria, Luis Manuel, Brousset, Dulce María, Cervantes-Olivares, Roberto Arnulfo

“…The chytrid fungus was detected in Charadrayla taeniopus and Leptodactylus fragilis, species that were not previously recorded with the fungus; the Bd also was confirmed on amphibians that inhabit from perennial rainforest at southeastern Mexico. According to CARTs, host species and precipitation were the most important factor to Bd occurrence but their combination with other variables as development stage, environmental temperature, season, vegetation type and aquatic life index have influence on its presence. …”

Valoración de hormonas esteroides en heces de una pareja de lobo mexicano (Canis lupus baileyi) en cautiverio Authors: Soto, María A., Salame-Méndez, Arturo, Ramírez-Pulido, José, Yañez, Lourdes, Armella, Miguel Angel

Blood-parasites (Haemosporida) of wild birds captured at different land uses within a tropical seasonal dry forest matrix Authors: González-Olvera, Merit, Hernández-Colina, Arturo, Santiago-Alarcon, Diego, Osorio-Beristain, Marcela, Martínez-Maya, José Juan

“…We explored the prevalence and parasitemia of haemosporidians infecting wild birds from Sierra de Huautla Biosphere Reserve in Morelos, southern Mexico. Birds were caught using mist nets in three habitat conditions (conserved, disturbed, and agricultural) and during two seasons (rainy and dry). …”

Resistencia del frijol al ataque del gorgojo pardo Acanthoscelides obtectus (Say, 1831) (Coleoptera: Chrysomelidae) en la zona Norte de Sinaloa Authors: Armenta-López, Arturo Rafael, Lugo-García, Gabriel Antonio, Sánchez-Soto, Bardo Heleodoro, Romero-Félix, Celia Selene, Cortez-Mondaca, Edgardo, Nava-Pérez, Eusebio

“…In the last decade, in Sinaloa, Mexico, new bean varieties have been established with valuable agronomic characteristics, such as high productivity and quality of the harvested product; However, it is essential to determine the resistance or high tolerance of these cultivars to the attack of this insect. …”

Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy Authors: García-Rejón, Julián E., Tzuc-Dzul, Julio C., Cigarroa-Toledo, Nohemi, Talavera-Aguilar, Lourdes G., Cetina-Trejo, Rosa C., Baak-Baak, Carlos M.

Dimorfismo sexual y ciclo reproductor de Sceloporus horridus (Wiegmann 1939) (Sauria:Phrynosomatidae) Authors: Valencia-Limón, Edward Roberto, Castro-Franco, Rubén, Bustos Zagal, María Guadalupe

“…Sexual dimorphism and reproductive cycle were studied in a population of Sceloporus horridus horridus from a tropical dry forest in central Mexico. Males with 90.66 mm (71.5-111.0 mm ± 12.79 mm) snouth vent-length were larger than 86.32 mm (71.0-101.0 ± 7.94) females. …”

Daño en semillas de Erythrina americana Mill., (Leguminosae: Faboideae: Erythrininae) por el brúquido Specularius impressithorax (Pic, 1932) (Coleoptera: Bruchidae) y su efecto en... Authors: Parra-Gil, Pedro de Jesus, Espinosa-Vásquez, Gonzalo, Lucio-Cruz, Claudia Yarim, Romero-Nápoles, Jesús, Arce-Cervantes, Oscar

“…The seeds were collected in the Tulancingo Valley, Hidalgo, Mexico in December 2017. 1,272 seeds had been collected from nine different trees, which remained at least 500 m away from each other. …”

Fluctuación poblacional y parasitismo de larvas de capitarsia decolora guenée, plutella xylostella l. y trichoplusia ni hübner (lepidoptera) en brassica oleracea l. Authors: Tovar Hernández, Horacio, Bautista Martínez, Néstor, Vera Graziano, Jorge, Súarez Vargas, Alma Delia, Ramírez Alarcón, Samuel

“…Population fluctuation and percentages of parasitism were determined for Copitarsia decolora (Guenée), Plutella xylostella L. and Trichoplusia ni Hübner on three varieties of B. oleracea, cabbage, cauliflower and broccoli, from April 2004 trough April 2005, in Acatzingo, Puebla, Mexico. Every 14 days randomized samplings in 10 plants by crop were made; the total number of larvae were recorded, collected and maintained in a rearing room at 27º C ± 1º C and 75% ± 5% of relative humidity for parasitoid development. …”

Especies nuevas y filogenia de las abejas de fuego, oxytrigona (hymenoptera: apidae, meliponini) Authors: González, Victor H., Roubik, David W.

“…The taxonomic status O. mediorufa is revised; as here understood, this species is distributed only from Mexico to El Salvador. We obtained a single tree for Oxytrigona in a cladistic analysis of 18 morphological and five body coloration characters, which did not support the monophyly of the mulfordi and tataira groups. …”

Ex situ reproduction in Ambystoma granulosum and Ambystoma lermaense (Amphibia: Ambystomatidae). Authors: Aguilar-Miguel, Xóchitl, Legorreta B., Gerardo, Casas-Andreu, Gustavo

“…Ambystoma granulosum and Ambystoma lermaense, are species in high priority to be protected by mean of this conservation strategy, since they are endemic species of Mexico and with a concern conservation status. Both species have been little studied, therefore in this study we investigated reproductive aspects that are vital for its conservation, as reproduction in laboratory, and hormonal induction with human chorionic gonadotrophin (hCG). …”

Evaluation of a pheromone lure for capturing the agave weevil (Coleoptera: Curculionidae) Authors: Rodríguez-Rebollar, Hilda, Rojas, Julio C., González-Hernández, Héctor, Ortega-Arenas, Laura Delia, Equihua-Martínez, Armando, Del Real-Laborde, José Ignacio, López-Collado, José

“…The agave weevil, Scyphophorus acupunctatus Gyllenhal, is considered the most important insect pest of the cultivated agaves in Mexico. Recent studies on the chemical ecology of this weevil have shown that males release a pheromone that attracts both sexes; the pheromone is composed of four components. …”

Use of attractants and nutritional supplements to increase mango white scale´s, Aulacaspis tubercularis Newstead (Hemiptera: Diaspididae) predators Authors: Hernández-Fuentes, Luis Martín, Urias-López, Mario Alfonso, López-Arroyo, José Isabel, López Arriaga, Jaime Gustavo

“…Mango is an economically important crop in Mexico, important population increases of mango white scale Aulacaspis tubercularis have been observed. …”

Larval development and degree day requirements of Chrysomya rufifacies (Diptera: Calliphoridae) in Torreón, Coahuila during spring and summer Authors: García-Espinoza, Fabián, Valdes PerezGasca, Ma. Teresa, Sánchez Ramos, Francisco Javier, Yusseff Vanegas, Sohath Zamira, Quintero Martínez, Ma. Teresa

Caracteres anatómicos y fitoquímicos del tallo y raíz de Mammillaria uncinata (Cactaceae) Authors: Loza-Cornejo, Sofía, Aparicio-Fernández, Xochitl, Patakfalvi, Rita Judit, Rosas-Saito, Greta Hanako

“…Therefore, the objectives of this study were to describe the anatomical-histochemical structure and phytochemical profile of the stem and root of Mammillaria uncinata, in order to contribute to the knowledge of biology and chemical composition of the species.Methods: The study was conducted with specimens collected in their natural distribution area in the Altos Norte region of Jalisco, Mexico. The standard paraffin microtechnique and histochemical techniques were used for the description of the anatomical and histochemical characters, whereas qualitative techniques were applied to study the phytochemical profile.Key results: Laticifers and crystals of variable morphology in the stem are some of the most distinctive characters. …”