The neotropical coreid genus Thasus is revised. Of the eight species, five (carchinus, luteolus, neocalifornicus, odonnellae, and rutilus) are described as new. One of these, T. neocalifornicus, extends into the southwestern United States, where it has been misidentified as T.…

Toonglasa indomita and Patritius osuna are described as new species from Mexico and Venezuela respectively. The former is noted to have spectacular elongate spines protruding from the posterior end of the male 8th abdominal segment. A discussion is included of…

Uranocoris maculatus is described as a new species from New Guinea. Comparison is made with U. suavis Walker, which is the only previously known species of the genus. Habitus view illustrations and drawings of the male genitalia are provided to…

Heisshygia rolstoni n. sp.. H. amplissima n. sp., and H, cephalota n. sp., are described from New Guinea. A key is provided to distinguish the known species. The presence of ocelli in Heisshygia is shown to correct the original description.

The effect of the host's inflammatory capsule or of physical restraint on the spontaneous evagination capacity of Taenia solium cysticerci was evaluated. Parasites obtained from infected pig muscle, in which the surrounding inflammatory capsule was not eliminated, were unable to…

The current study was designed to evaluate a tool for the self-identification of tapeworm carriers. Clinical and animal health care practitioners and schoolteachers were trained regarding the life cycle, risk factors, and control measures related to infection with Taenia solium.…

Basic demographic information for turtles in tropical and sub-tropical regions is still scarce. As a consequence, prospective management and conservation plans for these long-lived vertebrates lack the necessary quantitative background for successful implementation. In this study, we used capture-mark-recapture techniques…

Both females and males may suffer from increased mortality risk as a result of the activities and physiological processes associated with reproduction. In this study I estimated sex-specific reproductive costs in the survival rates of a viviparous and territorial lizard…

Cacti are thought to be highly vulnerable to chronic anthropogenic disturbance (CAD). To assess its effects, we modeled the dynamics of three populations of the endangered cactus Coryphantha werdermannii exposed to different intensities of disturbance. Because no seedlings germinated and…

Verbesina virgata (Asteraceae) is the stable food of generalist herbivores in xerophytic vegetation of southern Mexico City where nitrogen and phosphorous are limiting soil resources for plant growth and therefore it is likely that arbuscular mycorrhizal fungi play an important…