Comparative estimations of betalains and sugars in fruits of five species of Selenicereus (Cactaceae): Betalains and sugars in pitahayas Authors: Pérez-Orozco, Arith F., Sosa, Victoria

“...The objective of this paper is to determine the quantity of the betalains (betaxanthins and betacyanins) and sugars present in five taxa of Selenicereus, from the Hylocereus clade, commonly utilized for their edible fruit, including S. ocamponis which is an underutilized species, and scarcely cultivated in Mexico. Methods: Fruits from wild and cultivated plants were collected in Puebla, Veracruz and Yucatán (Mexico) and Valle del Cauca (Colombia) between April and June 2019, and their betalain and sugar content were estimated from frozen fruit. ...”

Reproductive biology and potential distribution of Ficus pringlei (Moraceae), a microendemic New World species Authors: Rojas-Cortés, Ángela P., Cuervo-Robayo, Ángela P., Cornejo-Tenorio, Guadalupe, Ibarra-Manríquez, Guillermo

“...Ficus pringlei is endemic to Mexico for which detailed information on the potential distribution and reproductive aspects are lacking. ...”

Floristic, ecological and ethnobotanical aspects of Mammillaria deherdtiana subsp. dodsonii (Cactaceae), an endemic and threatened plant Authors: Rendón-Aguilar, Beatriz, Bernal-Ramírez, Luis Alberto, Arias-Montes, Ángel Salvador, Jiménez-Sierra, Cecilia Leonor, Ballesteros-Barrera , Claudia, Ortega-Jiménez, Sinuhé, Bravo-Avilez, David

“...Background and Aims: In Oaxaca, Mexico, 26 species of the genus Mammillaria are reported, seven of them being endemic. ...”

Forest management planning as inheritance Authors: Mendoza-Briseño, Martín Alfonso, Navarro-Martínez, Angélica, Negreros-Castillo, Patricia, Uu-Chi, Rubén

“...The current forest plan for ejido Kankabchen, Quintana Roo, Mexico is one of the earlier examples of the patrimonial system practice. ...”

Rediscovery of a spider monkey population (Ateles geoffroyi) in Olomega Lagoon, El Salvador Authors: Pineda Peraza, Luis Armando, Segura Yanes, Jordi Humberto, Medina Zeledón, Kevin Enrique, Flores-Márquez, José Isidro, Ángel López, Miguel

“...Ateles geoffroyi is one of the largest monkeys of the Neotropics and its distribution is from Mexico to northern Colombia. Spider monkeys (Ateles geoffroyi) in the Olomega lagoon, Department of San Miguel (Eastern El Salvador) were last reported in 1944, more than 70 years ago. ...”

Determinación del sexo en Dendroctonus mexicanus Hopkins (Coleoptera, Scolytidae) a traves del análisis de caracteres morfológicos abdominales y cefálicos Authors: Mendoza Correa, María Guadalupe, Zúñiga Bermúdez, Gerardo

“...Analysis was carried out on 626 insects from five populations of México State. Results indícate that sex determination, by means of abdominal and cephalic characters is posible with 100% confidence....”

Observaciones sobre dos nidos de iguana verde (Iguana iguana) en "La Mancha", Veracruz Authors: Lara López, Ma. Del Socorro, González Romero, Alberto

“...Here we report some incidental observations on two iguana [Iguana iguana) nests at la Mancha, Vecracruz, México. Temperatures in the nest sites were measured daily during the incubation period. ...”

New South American Lachesilla in the group forcepeta (Psocoptera: Lachesilidae) Authors: García Aldrete, Alfonso Neri

“...Four species also occur outside of the South American subcontinent, in Costa Rica, Panamá, and México. The location of the types is given in each description. ...”

Helix aspersa (Stylommatophora: Helicidae) plaga emergente de la manzana (Malus Spp.) en Guerrero, Chihuahua Authors: Ruiz-Galván, Isabel, Pineda-Ríos, José Manuel, García-Ávila, Clemente de Jesús, Bravo-Pérez, Daniel, Torres-Martínez, José Gustavo, Florencio-Anastasio, José Guadalupe, Quezada-Salinas, Andrés, Vásquez-López, Isabel

“...In Mexico the apple tree is one of the most important fruit-trees with high economical value. ...”

Observations on the reproduction and life cycle of Plusiotis costata Blanchard, 1851 (Coleoptera: Melolonthidae: Rutelinae). Authors: Morón, Miguel Ángel

Nuevos registros de la ardilla voladora (Glaucomys volans) en Puebla: implicaciones de su presencia en áreas de aprovechamiento forestal Authors: Bueno-Cabrera, Aarón, Gil-Flores, Noé, Velázquez-Cerón, Uriel, Olivera-Avila, Carlos, Colodner-Chamudis, A. Gabriela

“...We report two new localities for the flying squirrel (Glaucomys volans) in Puebla, Mexico. First reported from the state in 1997 based on a mummified specimen found in 1994, our new records are based on a total of seven specimens from two different localities in the Sierra Norte de Puebla, located at least 70 km NE from the first record and 14 km NE from the nearest locality record (Tepozan, Hidalgo). ...”

Rediscovery of Fuirena repens (Cyperaceae), a rare endemic of the Mexican High Plateau Authors: Rosen, David J., S. Reid, Christopher, González Elizondo, M. Socorro, Kral, Robert

Contribution to the knowledge of threatened Mexican cacti Authors: Hernandez, Hector M., Godinez A., Hector

“...Mexico is the most important center of concentration of genera and species of cacti, most of which are endemic (73 and 78% respectively). ...”

Two new species from the Loureira Muell. Arg. Section of the gender Jatropha (Euphorbiaceae) Authors: Jimenez Ramirez, Jaime

“...Based on studies of herbarium collections and fieldwork in Mexico, two new species are described: Jatropha pereziae from Balsas River Basin in the state of Michoacan and J. dehganii which occurs on the slopes of Río Armería in the state of Jalisco. ...”

Número cromosómico y apareamiento meiótico en Turbinicarpus valdezianus (Möller) Glass & Foster (Cactaceae) Authors: Reyes-Valdés, M. Humberto, Gómez-Martínez, Martha, García-Osuna, Hermila Trinidad

“...In this research the chromosomes of Turbinicarpus valdezianus were studied in diakinesis and metaphase I, from native plants located near Saltillo, Coahuila (Mexico). A chromosome number 2n = 2x = 22 was found, which is consistent with the basic number x = 11, previously reported for other members of the cactus family. ...”

Validation of Microepidendrum (Orchidaceae: Laeliinae) Authors: Higgins, Wesley E.

FASCÍCULO COMPLEMENTARIO XXVI: PRINCIPALES HOSPEDEROS Y ALGUNOS OTROS DATOS ECOLÓGICOS DE LAS ESPECIES DE VISCACEAE EN EL ESTADO DE QUERÉTARO Authors: Rzedowski, Jerzy; Instituto de Ecología, A.C., Centro regional del Bajío, Calderón de Rzedowski, Graciela; Instituto de Ecología, A.C., Centro regional del Bajío

“...En espera de la definitiva confirmación de esta nueva disposición, se prefiere considerar ahora a las Viscaceae como grupo independiente.La familia está representada en México por tres géneros, de los cuales dos: Arceuthobium y Phoradendron se reconocen de Querétaro. ...”

FASCÍCULO COMPLEMENTARIO XXX: CATÁLOGO PRELIMINAR DE LAS ESPECIES DE ÁRBOLES SILVESTRES DE LA SIERRA MADRE ORIENTAL Authors: Rzedowski, Jerzy ; Instituto de Ecología, A.C., Centro regional del Bajío

“...A semejanza de varias otras comarcas de México, la Sierra Madre Oriental (SMOR) dista aún de ser apropiadamente explorada y estudiada en cuanto a su flora se refiere. ...”

FAMILIA BLECHNACEAE Authors: Palacios‑Rios, Mónica ; Instituto de Ecología, A.C., Hernández Hernández, Victoria ; Instituto de Ecología, A.C.

“...Está compuesto por 13 especies; de México se conocen sólo tres.Woodwardia es afín a Blechnum, pero se diferencia de este último por la presencia de soros interrumpidos en la costa....”

Clasificación de las propiedades mecánicas de las maderas mexicanas en condición “verde” Authors: Dávalos Sotelo, Raymundo, Bárcenas Pazos, Guadalupe M.