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Ralph Voris

Bio: Ralph Voris is an academic researcher from Indiana University. The author has contributed to research in topics: Creophilus & Staphylinus. The author has an hindex of 1, co-authored 1 publications receiving 13 citations.

Papers
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Journal ArticleDOI
Ralph Voris1
TL;DR: The Genera herein considered contain the largest members of the Staphylinidae, which are extremely large, heavily chitinized and usually dark brown in color.
Abstract: The Genera herein considered contain the largest members of the Staphylinidae . The larvae are extremely large, heavily chitinized and usually dark brown in color. The head is well separated from the thorax; clypeo-labral margin dentate except at the close of the instar when the dentation becomes worn and obscure; legs of medium length, heavily armed; pseudopode long, cylindrical and used in locomotion; urogomphus usually more than twice as long as pseudopode, hair-like spines on the urogomphus are extremely long and usually are arranged in modified whorls.

13 citations


Cited by
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Book ChapterDOI
27 Nov 2019
TL;DR: If the concept of “companion sampling” is followed at the death scene, the investigator will collect both preserved and live samples, with the live samples being held in the forensic entomology laboratory to allow the insects to complete their development to the adult stage.
Abstract: The laboratory-rearing of insects collected from a death scene is an integral component of the analysis of entomological evidence, and it should not be overlooked. The rearing of some insect species within a laboratory environment can prove to be an extremely difficult task, but fortunately the needs of most insects of forensic importance are easily met in captivity. Aquariums such as those previously described are recommended for use in rearing insects since their size allows for the normal larval dispersal of most species to occur, and their lightweight construction allows them to be handled with little effort. When collecting entomological evidence at a death scene, the forensic investigator is likely to encounter insect eggs. The insects of forensic importance carrion beetles are large beetles and frequently observed associated with decomposing organic material. The rearing of entomological evidence is a task not often undertaken by the crime scene technician, law enforcement agency, or medical examiner’s office during a death investigation.

39 citations

Journal ArticleDOI
TL;DR: Using the Creophilus complex, the phylogenetic utility of external structural characters, male genitalia, female genitalIA, and chaetotaxy of adults is examined for the first time in the megadiverse beetle family Staphylinidae.

30 citations

Journal ArticleDOI
TL;DR: Development of the Central European population of C. maxillosus was studied at ten constant temperatures and using different homogenous diets and thermal summation models were validated with insects reared at different temperatures and fed with different diets.
Abstract: This article was published with an error in Figs. 5 and 6. The figures have multiple mistakes with lines extending beyond the chart and lack of grid lines in some places.

15 citations

Journal ArticleDOI
TL;DR: Size and sex of adult carrion beetles are poor indicators of PMI, demonstrated in Necrodes littoralis and C. maxillosus.
Abstract: The estimation of postmortem interval (PMI) based on successional patterns of adult insects is largely limited, due to the lack of potential PMI markers. Sex and size of adult insects could be easily used for such estimation. In this study, sex- and size-related patterns of carrion attendance by adult insects were analyzed in Necrodes littoralis (Coleoptera: Silphidae) and Creophilus maxillosus (Coleoptera: Staphylinidae). For both species, abundance of males and females changed similarly during decomposition. A slightly female-biased sex ratio was recorded in N. littoralis. Females of N. littoralis started visiting carcasses, on average, one day earlier than males. There was a rise in size of males of N. littoralis at the end of decomposition, whereas for females of both species and males of C. maxillosus, no size-related patterns of carrion visitation were found. Current results demonstrate that size and sex of adult carrion beetles are poor indicators of PMI.

14 citations