Sergey gen. n., a new doryctine genus from temperate forests of Mexico and Cuba (Hymenoptera, Braconidae).

Alejandro Zaldivar-Riveron,Juan José Martínez,Rubi Nelsi Meza Lázaro,Carlos Pedraza-Lara

doi:10.3897/zookeys.589.8291

Abstract

The new doryctine genus Sergey gen. n. is described with four new species (Sergey cubaensis Zaldívar-Riverón & Martínez, sp. n., Sergey coahuilensis Zaldívar-Riverón & Martínez, sp. n., Sergey tzeltal Martínez & Zalídivar-Riverón, sp. n., Sergey tzotzil Martínez & Zalídivar-Riverón, sp. n.) from temperate forests of Mexico and Cuba. Similar to many other doryctine taxa, the new genus has a considerably elongated, petiolate basal sternal plate of the first metasomal tergite, although it can be distinguished from these by having the mesoscutum sharply declivous anteriorly with sharp anterolateral edges. The described species have been characterised molecularly based on two mitochondrial (COI, cyt b) and one nuclear (28S) gene markers. Based on the mitochondrial gene genealogies reconstructed, the evidence suggests the existence of incomplete lineage sorting or hybridization in the populations from Chiapas and Oaxaca assigned to Sergey tzeltal sp. n.

Highlights

The braconid wasp subfamily Doryctinae is a highly diverse, cosmopolitan group that currently comprises 198 genera and about 1,700 species (Braet 2016; Yu et al 2012)
Previous attempts trying to elucidate the phylogenetic relationships among doryctine genera based on morphological evidence yielded poorly resolved hypotheses (Belokobylskij 1993; Belokobylskij et al 2004)
One of the main external morphological features that was traditionally used to group genera within the Doryctinae is the relative length of the basal sternal plate of the first metasomal tergite

Summary

Introduction

The braconid wasp subfamily Doryctinae is a highly diverse, cosmopolitan group that currently comprises 198 genera and about 1,700 species (Braet 2016; Yu et al 2012). Mesoscutal lobes smooth, notauli deep and scrobiculate, obscured in an irregularly rugose median area before reaching the scuto-scutellar suture (Fig. 9).

Results

Conclusion