Chorion patterns on eggs of Lutzomyia sandflies from the Peruvian Andes

Abstract

Scanning electron microscopy (SEM) as used to depict and describe the eggs of five species of phlebotomine sandfly from the Andean region of Peru: Lutzomyia caballeroi, Lu.noguchii, Lu.peruensis, Lu.tejadai and Lu.verrucarum. Two new types of chorionic sculpturing of sandfly eggs are reported: these were named disperse (Lu.tejadai) and verrucose (Lu.noguchii). The aeropylar area of the eggs is also described for the first time for neotropical sandflies. These character states appear to vary for ecological rather than phylogenetic reasons and could be used for species identification.

Patterns of Exochorion Ornaments on Eggs of Seven South American Species ofLutzomyiaSand Flies (Diptera: Psychodidae)

“…In this case, use of the chorionic patterns allowed the distinction of three isomorphic species (L. townsendi, L. youngi, and L. spinicrassa). Perez and Ogusuku (1997) analyzed the Þne structure of chorionic sculptures in Þve Peruvian species and described two new patterns: verrucose and disperse. These authors reviewed the literature on the subject and presented the eight types of chorionic sculptures described to date: (1) polygonal; (2) reticular; (3) connected parallel ridges; (4) unconnected parallel ridges; (5) volcano-like; (6) elliptical; (7) verrucose, and (8) disperse.…”

“…Scanning electron microscopy (SEM) has been used to analyze the egg surface of different phlebotomine species in both the Old (Fausto et al 1992, Rogo et al 1992) and the New World (Ward and Ready 1975, Zimmerman et al 1977, Endris et al 1987, Feliciangeli et al 1993, Perez and Ogusuku 1997, Fausto et al 2001). This approach is of interest because of the existence of several cryptic and isomorphic species (several species exist where the females are indistinguishable) in the Phlebotominae.…”

Ootaxonomic investigation of five Lutzomyia species (Diptera, Psychodidae) from Venezuela

“…These studies suggest that differences in egg sculpture of Sergentomyia and Phlebotomus species are sufficient for separation of the two genera, hitherto based on other taxonomic characters (Perfil'iev 1966). Ootaxonomic investigations have been carried out in many Neotropical species (about 10% of the about 400 known species) demonstrating the usefulness of chorionic ultrastructure in separating closely related species (Ward & Ready 1975, Zimmerman et al 1977, Endris et al 1987, Feliciangeli et al 1993, Sierra et al 1995, Perez & Ogusuku 1997.…”

Life history of the sand fly vector Lutzomyia cruciata in laboratory conditions

“…cruciata is a complex of species (Pech-May et al, 2013), and the description of its development stages can be important in resolving this controversy. Previous studies have considered the reticules (crests) that form the eggshell to identify some sand flies species (Endris et al, 1987;Feliciangeli et al, 1993;Perez & Ogusuku, 1997;Fausto et al, 2001;Almeida et al, 2004). The arrangement of the egg reticules of Lu.…”