Navegando por Orientadores "NASCIMENTO, Jeane Marcelle Cavalcante do"

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Acesso aberto (Open Access)
Taxonomia de Dasythemis (Karsch, 1889) (Odonata: Libellulidae)
(Universidade Federal do Pará, 2024-11) MIRANDA FILHO, Jair da Costa; VILELA, Diogo Silva; http://lattes.cnpq.br/3091410701509383; NASCIMENTO, Jeane Marcelle Cavalcante do; http://lattes.cnpq.br/3880118795645876; https://orcid.org/0000-0002-5428-7495
Among the insects of the order Odonata, the suborder Anisoptera stands out for its cosmopolitan distribution and high dispersal capacity. This is made easier by their broad, non-petiolate wings, with a developed anal area on the hind wings. When perched, individuals of this suborder are recognizable by keeping their wings open. They also have a robust body and high flight capacity. Anisoptera is currently divided into five superfamilies: Aeshnoidea, Petaluroidea, Gomphoidea, Cordulegastroidea and Libelluloidea. Libelluloidea includes the most diverse and ubiquitous family, Libellulidae, which includes the target group of this study. Dasythemis is endemic to South America and has a complex taxonomic history. The lack of recent studies highlights significant gaps in understanding the diversity, taxonomy and geographical distribution of species in this group. Considering this, the present research aimed to fill these gaps through a detailed review of the literature, analysis of material collected from different regions, and a comprehensive study of morphology. To achieve this, 168 specimens from 11 institutions in three South American countries - Argentina, Brazil and Peru - were analyzed. The specimens were identified based on general identification keys and original descriptive works. For the redescriptions, the wing terminologies followed the proposal by Riek and Kukalová-Peck (1984), with modifications by Bechly (1996). The nomenclature of other morphological structures was based on Asahina (1945) and Garrison et al. (2006). Photographs were taken using a stereomicroscope equipped with a camera and illuminated by an LED dome for uniform lighting. As a result, all species and one subspecies were redescribed in a standardized manner, employing features used in more recent studies on the group. All species were illustrated with photographs; additionally, the vesica spermalis was examined using Scanning Electron Microscopy (SEM), illustrating this structure in detail for the first time.
Acesso aberto (Open Access)
Taxonomia de Stenochironomus Kieffer, 1919 (Diptera: Chironomidae) da Amazônia
(Universidade Federal do Pará, 2025-02) SOUSA, Arthur Felipe Diniz; DANTAS, Galileu Petronilo da Silva; http://lattes.cnpq.br/1581395125825780; NASCIMENTO, Jeane Marcelle Cavalcante do; http://lattes.cnpq.br/3880118795645876; https://orcid.org/0000-0002-5428-7495
Stenochironomus Kieffer (Diptera: Chironomidae) is a diverse and cosmopolitan group whose taxonomy is mainly based on the morphology of adult male genitalia. This genus was revised by Borkent (1984), who developed identification keys for larvae, pupae, and adults from the Nearctic, Neotropical, and Palearctic regions. Additionally, the author proposed the subdivision of the genus into two subgenera based on the morphology and habitat of immatures and larvae: Stenochironomus (Petalopholeus) Borkent for leaf-mining species, and Stenochironomus s. str. Kieffer for trunk-mining larvae. There are approximately 112 species of Stenochironomus distributed worldwide (except in Antarctica), of which 39 occur in the Neotropical region and 30 in Brazil, with 27 recorded in the Amazon region. However, some immature stages of Neotropical Stenochironomus are still unknown: among the 39 species described for the region, 24 have described pupae, and 18 have described larvae. Based on this, the present work aims to conduct a taxonomic study of Stenochironomus from the Amazon. To this goal, material from previous collections conducted by the Laboratory of Aquatic Insect Cytotaxonomy (INPA) in the Brazilian Amazon was analyzed. The association with immature stages was made possible through the collection of submerged leaves colonized by Stenochironomus larvae, which were transported to the laboratory for rearing until the emergence of adults. Material collected using Malaise and Pennsylvania traps was also analyzed. As result, eight new species were identified for the genus, of which five were described by associating their developmental stages with males, one was described based on males and pupae, and two were described based solely on males. Furthermore, the distribution of Stenochironomus figueiredoensis Danta, Hamada & Mendes, Stenochironomus liviae Danta, Hamada & Mendes, and Stenochironomus roquei Dantas, Hamada & Mendes was expanded to the state of Acre. Thus, this study contributes to the taxonomic knowledge of Stenochironomus in Brazil, particularly in the Amazon rainforest, by expanding the number of known species in the region.