Abstract:This paper is based on Sarcophagid flies taken by prof. A. DAMPF at CHAPULTEPEC (D.F.) and Cuernavaca (State of Morelos), mexico. The author examines 33 species and a subspecies belonging to 13 genera, including 6 new species and a new subspecies. One species of the genus Oxysarcodexia was found also at Texas, U. S. A. by Dr. H. J. Reinhard
Identification of species involved in cadaveric decomposition, such as scavenger Diptera, is a fundamental step for the use of entomological evidence in court. Identification based on morphology is widely used in forensic cases; however, taxonomic knowledge of scavenger fauna is poor for many groups and for many countries, particularly Neotropical ones. A number of studies have documented the utility of a DNA barcoding strategy to assist in the identification of poorly known and diverse groups, particularly in cases involving immature states or fragmented organisms. To provide baseline knowledge of the diversity of scavenger Diptera in the Valley of Mexico, we generated a DNA barcode collection comprised of sequences of the cytochrome c oxidase subunit 1 (COI) gene for all families sampled at a nature reserve located in this region. We collected and identified specimens on the basis of morphology and a species delimitation analysis. Our analyses of 339 individuals delineated 42 species distributed across nine families of Diptera. The richest families were Calliphoridae (9 species), Sarcophagidae (7 species), and Phoridae (6 species). We found many of the species previously recorded for the Valley of Mexico, plus 18 new records for the region. Our study highlights the utility of DNA barcoding as a first-step strategy to assess species richness of poorly studied scavenger fly taxa.
Identification of species involved in cadaveric decomposition, such as scavenger Diptera, is a fundamental step for the use of entomological evidence in court. Identification based on morphology is widely used in forensic cases; however, taxonomic knowledge of scavenger fauna is poor for many groups and for many countries, particularly Neotropical ones. A number of studies have documented the utility of a DNA barcoding strategy to assist in the identification of poorly known and diverse groups, particularly in cases involving immature states or fragmented organisms. To provide baseline knowledge of the diversity of scavenger Diptera in the Valley of Mexico, we generated a DNA barcode collection comprised of sequences of the cytochrome c oxidase subunit 1 (COI) gene for all families sampled at a nature reserve located in this region. We collected and identified specimens on the basis of morphology and a species delimitation analysis. Our analyses of 339 individuals delineated 42 species distributed across nine families of Diptera. The richest families were Calliphoridae (9 species), Sarcophagidae (7 species), and Phoridae (6 species). We found many of the species previously recorded for the Valley of Mexico, plus 18 new records for the region. Our study highlights the utility of DNA barcoding as a first-step strategy to assess species richness of poorly studied scavenger fly taxa.
Thirty-nine species of Sarcophaginae are recorded from Buenos Aires Province (Argentina). A new species, Microcerella asymmetrica sp. nov., is described. Females of Oxysarcodexia bicolor Lopes, O. marina Hall, and Sarcophaga (Lipoptilocnema) koehleri Blanchard are described for the first time. Four nomenclatorial actions are reported: Sarcohelicobia elegans Blanchard is established as a new junior synonym of Nephochaetopteryx cyaneiventris Lopes, and lectotypes are designated for Oxysarcodexia delpontei Blanchard [a junior synonym of Oxysarcodexia paulistanensis (Mattos)], Sarcophaga argentina Brèthes [a junior synonym of Sarcophaga (Liopygia) argyrostoma (Robineau-Desvoidy)], and Neobellieria brethesi Blanchard [a junior synonym of Sarcophaga (Neobellieria) polistensis Hall]. Blaesoxipha (Tephromyia) hospes (Aldrich), Peckia (Euboettcheria) florencioi (Prado & Fonseca), Ravinia advena (Walker), R. aureopyga (Hall) and Sarcodexia lambens (Wiedemann) are newly recorded from Buenos Aires Province, and Udamopyga percita is newly recorded from Argentina. A key is presented to the adult males and females of 36 of the 39 species of Sarcophaginae recorded from Buenos Aires province. Notes on distribution, biology, life history and host records are also given.
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