A PHYLOGENETIC LIST OF THE GENERA OF RUBIACEAE IN MEXICO Authors: David Lorence

“...Se presenta una secuencia filogenética para ubicar estos géneros según el sistema de clasificación elaborado por Robbrecht (1988)....”

Species of the bruchidae family (coleoptera) at Zimapán, hidalgo, Mexico: new records, host plants, and key for their identification Authors: Godínez-Cortés, Sergio, Romero Nápoles, Jesús, Castellanos, Ignacio

“...The most relevant results is a new record of the genus Abutiloneus and nine new species records to Hidalgo, México: Abutiloneus idoneus Bridwell, 1946; Acanthoscelides aequalis (Sharp, 1885), Acanthoscelides speciosus (Schaeffer, 1907); Meibomeus hidalgoi Kingsolver & Whitehead, 1976; Merobruchus porphyreus Kingsolver, 1988; Mimosestes humeralis (Gyllenhal, 1833); Mimosestes janzeni  Kingsolver & Johnson, 1978; Sennius discolor (Horn, 1873) and Stator vachelliae Bottimer, 1973; two new host plants, Acacia farnesiana (L.) ...”

Microcoryphia (insecta) de uma floresta periodicamente inundada por água mista naamazônia central: fenologia, densidade e adaptação Authors: Wellington de Morais, José, Adis, Joachim

“...Two monthly samplings with ground photo-eclectors, were carried out during the dry season (August/1987 to May/1988) to register the activity and density meanwhile weekly samplings with arboreal photo-eclectors were performed to detect vertical migration on trunks upwards anddownwards. ...”

Distribución y abundancia del Jaguar, panthera onca (Carnivora; Felidae) en el estado de Chiapas, Mexico Authors: Aranda, Marcelo

Efecto de la ganadería extensiva sobre la regeneración arbórea de los bosques de la Sierra de Manantlán Authors: Hernández Vargas, Guadalupe, Sánchez Velásquez, Lázaro R., Carmona Valdovinos, Tomás F., Pineda López, Ma. del Rosario, Cuevas Guzmán, Ramón

“...The Las Joyas Field Station (LJFS) in the Sierra de Manantlán is characterized by a long history of anthropogenic disturbance. In 1988 a fence was established that delimited Las Joyas, excluding any anthropogenic disturbance. ...”

Ajuste de funciones de ahusamiento a los perfiles fustales de cinco Pináceas de la región de El Salto, Durango Authors: Corral R., Sacramento, Návar Chaidez, José de Jesús, Fernández Sánchez, Fabián

“...The total number of trees measured for each species was: 507 (Pinus cooperi), 453 (P. durangensis), 424 (P. engelmannii), 400 (P. leiophylla), and 322 (P. herrerae) of which 75% were used to estimate parameters and the remaining 25% to test the goodness of fit of taper fuctions of Clutter (1980), Amidon (1984), Biging (1984), Kozak (1988), Kozak y Newnham (1992). Parameters were fitted by least square techniques in linear, polinomial and multiple regression analysis. ...”

Desarrollo embrionario temprano en el hamster sirio dorado, Misocricetus auratus (Mammalia: Rodentia) Authors: Navarro Maldonado, Ma. Del Carmen, Ambriz García, Demetrio, Mundo Reyes, Eduardo, Trejo Cordova, Alfredo, Hernández Pérez, Omar, Rosado García, Adolfo

Seed bank and rain in successional communities of the pine oak forest of Los Altos de Chiapas, Mexico Authors: Ramirez-Marcial, Neftali, Gonzalez-Espinosa, Mario, Quintana-Ascencio, Pedro Francisco

“...Sticky traps were used to evaluate the rain of seeds throughout their major production period (August 1988-April 1989). That abundance of buried seeds in the milpa field (112 seeds/m2) and in the old-field (92) was significantly lower than in the mid-successional forest (698) and grassland (578) stands. ...”

Effects of forestry on the structure, diversity and dynamics of mixed stands in the Sierra Juárez, Oaxaca Authors: Ramírez Santiago, Rosario, Ángeles Pérez, Gregorio, Hernández de La Rosa, Patricia, Cetina Alcalá, Víctor Manuel, Plascencia Escalante, Ofelia, Clark-Tapia, Ricardo

Effect of partial interference on natural predation of a grassland grasshopper community from the Chihuahuan Desert. Authors: Rivera García, Eduardo, Cano-Santana, Zenón

“...Perturbation on natural predation in a driest year (1988) on eight grasshopper species assembly during an outbreak of one of them (Boopedon nubilum) in a toboso arid grassland in Chihuahuan Desert was analyzed. ...”

Ecological association of Pinus pseudostrobus (Pinaceae) in response to biogeographical variations in Central-Southern of Mexico Authors: Sandoval-García, Rufino, González-Cubas, Rigoberto, Bautista-Cruz, Angelina

Análisis histórico de la clasificación de los Coleoptera Scarabaeoidea o Lamellicornia Authors: Kohlmann, Bert, Morón, Miguel Angel

“...Medvedev (1976) and Iablokoff-Khnzorian (1977) have also made comparative studies, which, like Endrödi’s proposal, have not been accepted by English speaking authors. Paulian’s (1948-1988) and Balthasar’s (1963) proposals were based mainly on the action of elevating subfamilies to the family status, so they do not really represent a new proposal. ...”