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This article provides an overview of the professional career of the Argentine entomologist of German origin Carlos Bruch, with particular emphasis on two moments in his career in which he developed his work with relative independence from any academic institution, resorting to spaces, practices, and strategies that could be considered unconventional. From the analysis of his scientific correspondence and primary sources, it is argued that in the case of entomology in the late nineteenth and early twentieth centuries, these divisions did not work in isolation and there was continuous communication and collaboration between them. [ABSTRACT FROM AUTHOR]

Forensic entomotoxicology, which analyzes necrophagous insects to detect toxic substances, is crucial in determining causes of death and estimating the post-mortem interval. This study focused on Peckia intermutans (Walker) (Diptera: Sarcophagidae) as a marker for detecting methanol, a potentially lethal alcohol often added as an adulterant in alcoholic beverages due to its low cost and similarity to ethanol. A gas chromatography-mass spectrometry (HS-GC-MS) method was developed to detect methanol, and its effects on the development time, survival, and morphology of flesh flies were investigated. Larvae were reared on liver substrates enriched with methanol (300, 500, and 1000 mg/kg). Results showed: the developed method detected methanol in all instars; methanol affected the developmental time of the flies; survival increased with higher methanol concentration; and morphological changes were evident in weight. This study provides valuable information on entomotoxicological research in Ecuador, emphasizing the need to consider morphological changes in P. intermutans to avoid inaccurate estimations of post-mortem intervals. [ABSTRACT FROM AUTHOR]

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Polls mastegadors (Psocodea, Phthiraptera: Amblycera i Ischnocera) en ocells silvestres de Zungarococha, Iquitos (Perú) L'objectiu d'aquest treball va ser identificar les espècies de polls mastegadors recol·lectades en 30 ocells silvestres de la localitat de Zungarococha, Iquitos, Perú. Es van identificar 11 espècies de polls entre els 36 espècimens en total. L'espècie Columbicola passerinae (Wilson, 1941) va presentar el nombre més alt d'hostes i Motmotnirmus marginellus (Nitzsch, 1874) i Docophorus rufus (Kellogg, 1899) la prevalença, intensitat i abundància mitjana més elevades. Aquest estudi registra per primera vegada 11 espècies de polls i noves associacions d'hostes i amplia la llista d’ocells hostes al Perú.

Musca domestica (Linnaeus, 1758) (Diptera: Muscidae), popularly known as "housefly", is a highly synanthropic species, with economic, medical-sanitary, veterinary, and forensic importance. It is able to cause damage to health, transmit pathogenic agents, cause infection in domestic animals, and, in its immature stage, cause secondary myiasis. The scavenging habit of its immature stages makes these flies pioneers in colonizing both human and animal carcasses, from the initial stages of corpse decomposition to the final stages. Intrapuparial development studies of all stages of the biological cycle of these insects help estimate pupal age, being useful to forensic entomology to aid in determining the minimum postmortem interval (minPMI). This study describes, morphologically, the external structures of the pupae, under temperatures of 23, 27, and 30 ± 1 °C aiming to identify the characteristics that define their developmental stages and estimation of the pupae age of M. domestica. The whole experiment was carried out under laboratory conditions, with relative humidity 60 ± 10% and 12 hours of photoperiod. The process of pupariation and pupation including pre-pupae phases were observed; larvae pupae apolysis; early cryptocephalic pupae; late cryptocephalic pupae; phanerocephalic pupae; pharate adult, discriminated by eye color (transparent eyes, pink eyes, and red eyes); and the emergency of adults, which occurred in the intervals of 162-180; 138-144, and 96-102 hr, respectively, being described throughout the metamorphosis of the external morphological characteristics of the pupal stage of M. domestica., (© The Author(s) 2023. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)