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Two new species of Diodontus (Hymenoptera: Pemphredonidae) from the western Mediterranean and their phylogenetic relationships

Published online by Cambridge University Press:  14 August 2019

Eduardas Budrys Open the ORCID record for Eduardas Budrys [Opens in a new window] ,
Anna Budrienė ,
Svetlana Orlovskytė  and
Villu Soon
Eduardas Budrys*
Affiliation:
Nature Research Centre, Akademijos 2, LT-08412 Vilnius, Lithuania
Anna Budrienė
Affiliation:
Nature Research Centre, Akademijos 2, LT-08412 Vilnius, Lithuania
Svetlana Orlovskytė
Affiliation:
Nature Research Centre, Akademijos 2, LT-08412 Vilnius, Lithuania
Villu Soon
Affiliation:
Natural History Museum, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia
*
1Corresponding author (e-mail: eduardas.budrys@gamtc.lt)
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Abstract

Two new species of Diodontus Curtis, 1834 (Hymenoptera: Pemphredonidae) are described. Diodontus polytylus Budrys new species is widespread in North Africa, from Libya and Chad to Morocco, as well as in southern Spain and Portugal. Diodontus guichardi Budrys new species was found in several localities in Morocco. The new species have small differences in their morphology; however, they can be easily separated using molecular characters. Comparison of 17 molecular markers has revealed that the highest evolutionary divergence is observed in mitochondrial gene ND6 and internal transcribed spacer ITS2. The variable regions of the nuclear rDNA genes 18S and 28S demonstrated the lowest evolutionary divergence; thus they were of the least use for species identification. The most coherent reconstruction of phylogeny, in comparison to other groups of markers, was obtained using exons of nuclear protein-coding genes. A provisional key to the species of D. minutus (Fabricius, 1793) species group of the Mediterranean Region is presented.

Type
Systematics and Morphology
Information
The Canadian Entomologist , Volume 151 , Issue 5 , October 2019 , pp. 558 - 583
Copyright
© Entomological Society of Canada 2019 

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