Relationships of nine Italian Chrysotoxum species were analysed using morphological and molecular data. The morphology-derived cladogram revealed three well-defined groups: (i) C. cautum, (ii) the arcuatum group (C. arcuatum, C. fasciolatum) and (iii) the festivum group (C. festivum - C. vernale, C. bicinctum, C. elegans, C. octomaculatum and C. parmense). Trees inferred from COI-tRNALeu-COII sequences were largely in agreement, but they identified (i) C. parmense as an isolated branch, (ii) C. festivum and C. vernale as separate entities, (iii) C. elegans within a paraphyletic C. festivum clade. ITS2 trees were partially unresolved but C. parmense sequence emerged as a sister to the festivum group. The monophyly of the festivum group derived from morphological data was rejected by a phylogenetic test performed on combined molecular data set. The diagnostic value of some morphological characters commonly used to identify Chrysotoxum species is therefore questioned.

Phylogeny of Chrysotoxum species (Diptera: Syrphidae) inferred from morphological and molecular characters / MASETTI A.; LUCHETTI A.; SOMMAGGIO D.; BURGIO G.; MANTOVANI B. - In: EUROPEAN JOURNAL OF ENTOMOLOGY. - ISSN 1210-5759. - STAMPA. - 103:2(2006), pp. 459-467. [10.14411/eje.2006.059]

Phylogeny of Chrysotoxum species (Diptera: Syrphidae) inferred from morphological and molecular characters

MASETTI, ANTONIO;LUCHETTI, ANDREA;BURGIO, GIOVANNI;MANTOVANI, BARBARA
2006

Abstract

Relationships of nine Italian Chrysotoxum species were analysed using morphological and molecular data. The morphology-derived cladogram revealed three well-defined groups: (i) C. cautum, (ii) the arcuatum group (C. arcuatum, C. fasciolatum) and (iii) the festivum group (C. festivum - C. vernale, C. bicinctum, C. elegans, C. octomaculatum and C. parmense). Trees inferred from COI-tRNALeu-COII sequences were largely in agreement, but they identified (i) C. parmense as an isolated branch, (ii) C. festivum and C. vernale as separate entities, (iii) C. elegans within a paraphyletic C. festivum clade. ITS2 trees were partially unresolved but C. parmense sequence emerged as a sister to the festivum group. The monophyly of the festivum group derived from morphological data was rejected by a phylogenetic test performed on combined molecular data set. The diagnostic value of some morphological characters commonly used to identify Chrysotoxum species is therefore questioned.
2006
Phylogeny of Chrysotoxum species (Diptera: Syrphidae) inferred from morphological and molecular characters / MASETTI A.; LUCHETTI A.; SOMMAGGIO D.; BURGIO G.; MANTOVANI B. - In: EUROPEAN JOURNAL OF ENTOMOLOGY. - ISSN 1210-5759. - STAMPA. - 103:2(2006), pp. 459-467. [10.14411/eje.2006.059]
MASETTI A.; LUCHETTI A.; SOMMAGGIO D.; BURGIO G.; MANTOVANI B
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/22249
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