Francisco Cruz Sosa

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INTRODUCTION We investigated the root canal configuration of maxillary premolars in a Spanish population by using cone-beam computed tomography. METHODS Images of 804 maxillary first and second premolars were obtained from 620 patients who underwent cone-beam computed tomography scanning during preoperative assessment (before implant surgery, orthodontic(More)
Cecropia peltata is popularly known as “guarumbo” in Mexico and is used in traditional medicine for treatment of diabetes mellitus. C. peltata plants were cultivated in a hydroponic system under controlled conditions. Gradients of light (20, 30 and 100 μmol m−2 s−1) and nitrate concentrations (13, 2 and 0.2 mM) were applied to estimate their effect on(More)
This taxonomic study includes: (i) a redescription of Leucochrysa (Leucochrysa) nigrilabris (Banks) (♂ and ♀), based on the type specimen and new material and (ii) images of the Leucochrysa (L.) insularis (Walker) type, adult color polymorphism, and genital characters (♂ and ♀). For both species, it provides: (iii) descriptions of the larvae, (iv)(More)
Ungla Navás is a small and relatively unstudied genus of Neotropical Chrysopini (Neuroptera: Chrysopidae: Chrysopinae) from Central and South America. Here, the genus is reported from Venezuela for the first time, and seven new species are described: Ungla demarmelsi sp. nov.; Ungla diazi sp. nov.; Ungla curimaguensis sp. nov.; Ungla martinsi sp. nov.;(More)
We dedicate this article to the memory of Sergio de Freitas, FCAV-UNESP, Jaboticabal, São Paulo, Brazil (deceased, 2012). He was an active and enthusiastic Neuropterist and the cherished mentor and friend of Francisco Sosa. Leucochrysa McLachlan is the largest genus in the Chrysopidae, yet it has received relatively little taxonomic attention. We treat two(More)
Vieira Navás is a small genus of Neotropical green lacewings in the tribe Belonopterygini. Here, a fifth species, Vieira flinti sp. nov., is described from Venezuela and Brazil. This species shares significant features with disparate members of the genus; thus the genus as a whole is now known to express a more continuous range of morphological variation(More)
Here, Ungla Navás, 1914, a poorly known Neotropical genus is reviewed. Twenty-five valid species are recognized; seven of them are new to science: Ungla adamsisp. n., U. elbergisp. n., U. grandispiraculasp. n., U. mexicanasp. n., U. pennyisp. n., U. quchapampasp. n., U. stangeisp. n.; and five are transferred to Ungla from other genera: U. bolivari (Banks),(More)
Hemerobiella periotoi Sosa & Lara sp. nov. is described from Venezuela. The new species was collected at the edges of a mature cloud forest in Lara state. This is the third species known in Hemerobiella Kimmins, and the second recorded from Venezuela. Additionally, new Venezuelan records and illustrations of H. oswaldi Monserrat, as well as, a key to(More)
The monotypic leucochrysine genus Nuvol was previously known from three specimens of Nuvol umbrosus Navás, collected in the Atlantic Forest region of Brazil. For many years these specimens have been missing, and the genus has remained without a modern description. Here, the species is redescribed based on two newly discovered specimens (females) from the(More)
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