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Title: Revisiting the evolution of Ostrinia moths with phylogenomics (Pyraloidea: Crambidae: Pyraustinae)
Abstract

Reconstructing a robust phylogenetic framework is key to understanding the ecology and evolution of many economically important taxa. The crambid moth genusOstriniacontains multiple agricultural pests, and its classification and phylogeny has remained controversial because of the paucity of characters and the lack of clear morphological boundaries for its species. To address these issues, we inferred a molecular phylogeny ofOstriniausing a phylogenomic dataset containing 498 loci and 115 197 nucleotide sites and examined whether traditional morphological characters corroborate our molecular results. Our results strongly support the monophyly of one of theOstriniaspecies groups but surprisingly do not support the monophyly of the other two. Based on the extensive morphological examination and broadly representative taxon sampling of the phylogenomic analyses, we propose a revised classification of the genus, defined by three species groups (Ostrinia nubilalisspecies group,Ostrinia obumbratalisspecies group, andOstrinia penitalisspecies group), which differs from the traditional classification of Mutuura & Munroe (1970). Morphological and molecular evidence reveal the presence of a new North American species,Ostrinia multispinosaYangsp.n., closely related toO.obumbratalis. Our analyses indicate that theOstriniaancestral larval host preference was for dicots, and thatO.nubilalis(European corn borer) andOstrinia furnacalis(Asian corn borer) independently evolved a preference for feeding on monocots (i.e., maize). Males of a fewOstriniaspecies have enlarged, grooved midtibiae with brush organs that are known to attract females to increase mating success during courtship, which may represent a derived condition. Our study provides a strong evolutionary framework for this agriculturally important insect lineage.

 
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PAR ID:
10371866
Author(s) / Creator(s):
 ;  ;  ;  ;  
Publisher / Repository:
Wiley-Blackwell
Date Published:
Journal Name:
Systematic Entomology
Volume:
46
Issue:
4
ISSN:
0307-6970
Page Range / eLocation ID:
p. 827-838
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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