Two new species of Martintella Artigas, 1996, Martintella aurata sp. nov. and Martintella fernandoi sp. nov., from Costa Rica are described and illustrations of species of the genus are provided.

Hyalella faxoni Stebbing, 1903 from Costa Rica is redescribed. The species was previously in the synonymy of Hyalella azteca (Saussure, 1858). The morphological differences between these two species are discussed.

Cleidogona huebnerae, n. sp., is described from La Gamba Tropical Research Station, Costa Rica. A total of sixteen species in three genera of Cleidogonidae are known from Central America (Guatemala south to Panama), and they are reviewed here.

—Laselva, n. gen, and Laselva triplehorni, n. sp., are described and illustrated from the canopy of a lowland Atlantic rainforest in Costa Rica. The genus belongs to the ‘‘Sphaeronychini’’ of the Alticinae.

Culture of honor (COH) theory [Nisbett, R. E., & Cohen, D. (1996). Culture of honor: The psychology of violence in the south. Boulder, CO: Westview Press] predicts that the importance of upholding one’s reputation is cross-culturally variable: Revenge should be more prevalent in herding societies than in farming societies, and should be entirely absent in foraging societies. This study was desi...

In Costa Rica, there is an acceptable work in the area of risk management and an advanced system of emergency response. However, it is recognized and accepted the lack of a comprehensive shared approach to manage disaster risk that involves the prevention of disasters in the National System for Disaster Risk Management (SNGR in Spanish). One of the main needs is the lack of a shared and accessi...

Costatrichia Mosely, 1937 is a Neotropical genus included in the subfamily Leucotrichiinae. Previously, this genus included 14 described species, two from Brazil and eight from Costa Rica. Based on recent specimens collected with light traps in the Brazilian Amazon and Costa Rica, we describe two new species: Costatrichia ipixuna sp. nov. from the state of Amazonas, Brazil (C. lodora group) and...

This article analyzes deaths and hospital discharges involving cancer of the reproductive organs in Costa Rica during the period 1956-1969. The focus in on breast, prostate, and uterine cancer, since these three types account for virtually all of the known cases. It is noted that while rates of breast and prostate cancer are very low in Costa Rica, very high rates of uterine cancer have been re...

Knowledge of ecological impacts of exotic beach almond (Terminalia catappa) in the central Pacific of Costa Rica are little known, but studies have found this species to be a potentially important food source for endangered scarlet macaws (Ara macao). In this study, reproductive phenology and seed predation by variegated squirrels (Sciurus variegatoides) and scarlet macaws were measured during ...

Gastric cancer is the second cancer causing death worldwide. Both incidence and mortality rates vary according to geographical regions. The receptor for urokinase plasminogen activator (uPAR) is involved in extracellular matrix degradation by mediating cell surface associated plasminogen activation, and its presence on gastric cancer cells is linked to micro-metastasis and poor prognosis. Immun...