Abstract
Anticarsia gemmatalis (Hübner, 1818) and Chrysodeixis includens (Walker, 1858) are species of Lepidoptera that cause great damages in the soybean plantations of Brazil. Despite the importance they have in this regard, there are no studies on the chromosomal organization of these species and recently, A. gemmatalis, which belonged to the Noctuidae family, was allocated to the Erebidae family. Therefore, the objective of this paper was to analyze, through conventional and molecular cytogenetic markers, both species of Lepidoptera. A 2n = 62 was observed, with ZZ/ZW sex chromosome system and holokinetic chromosomes for both species. There was homogeneity in the number of 18S rDNA sites for both species. However, variations in heterochromatin distribution were observed between both species. The cytogenetic analyses enabled separation of the species, corroborating the transference of A. gemmatalis, from the family Noctuidae to the family Erebidae, suggesting new cytotaxonomic characteristics.
Highlights
The order Lepidoptera (Linnaeus, 1758) is composed of approximately 15,000 genera and 157,000 species [1]. The representatives of this order have wings covered by scales, and are popularly known as butterflies and moths, and include many species of great economic importance
6,000 lepidopteran species have economic importance, and it is estimated that 25% are classified in the superfamily Noctuoidea
After the C-banding, the slides were stained with Giemsa 2% and fluorochromes Cromomycin A3 (CMA3) and 40-6-diamidino-2-phenylindole (DAPI) for the detection of the GC and AT-rich chromosomal regions, respectively [28]
Summary
The order Lepidoptera (Linnaeus, 1758) is composed of approximately 15,000 genera and 157,000 species [1]. The representatives of this order have wings covered by scales, and are popularly known as butterflies and moths, and include many species of great economic importance. They are holometabolous insects [2] and primarily phytophagous, when in larval stages making many of these insects pests. Among the Lepidoptera, Anticarsia gemmatalis (Hubner, 1818) and Chrysodeixis includens (Walker, 1858) stand out as soybean crop pests in Brazil.
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