A forensic entomology case from the Amazon rain forest of Brazil

The first case of application of forensic entomology in the Brazilian Amazonia is described. The corpses of 26 men were found in the rainforest in Rondonia State, Brazil. Fly larvae collected on the bodies during autopsy were identified as Paralucilia fulvinota (Diptera, Calliphoridae). No data or specimens were collected at the crime scene. At the laboratory, the larvae developed into pupae in 58 h and into adults in 110.5 h. The total development time for P. fulvinota was measured in field experiments inside the forest. The age of the larvae when collected from the bodies was estimated as the difference between the time required for them to become adults and the total development time for this species. The estimated age of the maggots and the minimum postmortem interval was 5.7 days.     

Artifacts Caused by Leaf-Cutting Ants of the Genus Atta (Hymenoptera: Formicidae): Postmortem Bite Injuries and the Tearing of Clothes

Ants are one of the first insects to find an exposed cadaver and can be present during all stages of decomposition. Although these organisms are not commonly used in postmortem interval estimates, they are to be taken into account on criminal investigations involving human corpses, since they can leave bite marks that can be mistaken for antemortem or perimortem injuries, which could be misleading when ascertaining the occurrence of abuse or physical altercation during a crime. A few studies report the action of ants on human cadavers and even though leaf-cutting ants of the genus Atta are frequently encountered in succession studies that use animal carcasses, there are no records of these fungus-growing species on human corpses. Atta is a genus restricted to the New World, ranging from northern Argentina to southern United States and acts as one of the most conspicuous neotropical herbivores. In this study, we report three cases of violent death that illustrate the impact of ants, especially those of the genus Atta, in a forensic setting. We compare the patterns displayed by postmortem bite injuries caused by leaf-cutter ants and other common species with less robust mandibles. We also present the capability of Atta ants to create artifacts by cutting victim’s clothes in a crime scene, contributing to the knowledge of ant-mediated confounding factors in crime scene investigation.     

The Due Diligence Standard and the Prevention of Racism and Discrimination

Netherlands International Law Review - The due diligence standard has played a significant role in preventing human rights violations, including racial discrimination. Yet, it is significantly...     

Offenders have higher delay‐discounting rates than non‐offenders after controlling for differences in drug and alcohol abuse

Purpose. Do criminal offenders discount future rewards more rapidly than non‐offenders? Theories of criminality assume that impulsivity is a key predictor of offending and suggest an affirmative answer, but there are no prior relevant studies with adult offenders and the only previous study with juveniles failed to find that offenders discounted delayed rewards more steeply than controls ( Wilson & Daly, 2006 ). Method. We measured rates of delay discounting for adult offenders incarcerated in two medium‐security facilities in New Zealand (n= 63) and non‐offender controls (n= 70) using a questionnaire which asked participants to nominate an indifference point – an amount of money to be received after a delay that was equal in value to an immediate amount – for immediate rewards varying from $500 to $4,000. Indifference points were converted to annual discounting rates. Self‐reported measures of alcohol and drug abuse were also obtained. Results. Offenders discounted future rewards substantially more than non‐offenders, and rates varied systematically with amount and delay for both groups, consistent with previous research. The difference in delay discounting between offenders and controls remained significant after controlling for self‐reported drug and alcohol use. There were no significant gender differences. Conclusions. These results suggest that offenders have a deficit in delay discounting, likely appearing in late adolescence or early adulthood, which may lead them to make suboptimal choices.