Sergey, Martinez, Juan Jose, Lazaro, Rubi Nelsi Meza, Pedraza-Lara, Carlos & Zaldivar-Riveron, Alejandro, 2016

Martinez, Juan Jose, Lazaro, Rubi Nelsi Meza, Pedraza-Lara, Carlos & Zaldivar-Riveron, Alejandro, 2016, Sergey gen. n., a new doryctine genus from temperate forests of Mexico and Cuba (Hymenoptera, Braconidae), ZooKeys 589, pp. 143-164 : 145-147

Taxon classification Animalia Hymenoptera Braconidae

Sergey gen. n. Figs 1-2

Diagnosis.

Species of this new genus can be distinguished from members of the remaining doryctine genera with long, petiolate first metasomal tergite (e.g. Bolivar, Notiospathius , Pecnobracon Kieffer et Jöergensen, Spathius , Trigonophasmus Enderlein) by having the mesoscutum sharply declivous anteriorly with sharp anterolateral corners. Sergey could be included in the key to dorcytine genera of the New World ( Marsh 1997) as follows:

Description.

Head: not depressed. Ocelli arranged in almost equilateral triangle. Frons not distinctly excavated, without a median keel between antennal sockets. Occipital carina complete, fused with hypostomal carina before mandible. Malar suture absent. Clypeus not high, delineated from face by distinct furrow, with fine lower flange. Hypoclypeal depression wide, round. Postgenal bridge narrow. Maxillary palpi 5-segmented, apical segment longer than fourth segment; labial palpi short, 4-segmented, third segment not shortened. Scape of antenna wide and rather short, without flange apically and ventroapical lobe, without basal constriction; ventral margin of scape shorter than dorsal margin in lateral view. First flagellar segment about the same length as second segment, usually several apical or subapical segments whithish. Apical segment more or less pointed apically, without “spine”.

Mesosoma: not depressed. Neck of prothorax short but visible in dorsal view. Pronotum dorsally weakly convex (lateral view), with a transverse carina and a scrobiculate pronotal sulcus. Pronope absent. Propleural dorsoposterior flange rather short. Mesonotum distinctly elevated above pronotum. Anterolateral corners of mesoscutum projected in two flanges (Figs 1-2). Notauli present and complete, scrobiculate, obscured in rugose median area of mesoscutum. Scuto-scutellar (transscutal) suture distinct and complete. Prescutellar depression, with 3-5 high carinae. Scutellum slightly convex, subtriangular in dorsal view, about as long as wide, without lateral carinae. Subalar depression distinct. Mesopleuron with subalar sulcus, sternaulus and posterior mesopleural sulcus coarsely sculptured, otherwise smooth and polished. Mesopleural pit distinct. Precoxal sulcus (sternaulus) rather deep, wide, and scrobiculate, extended at least two thirds length of mesopleuron. Prepectal carina distinct and complete, laterally reaching anterior margin of subalar depression. Propodeum with two dorsolateral areas delimited by distinct carinae; sometimes these divergent carinae suggest an areola enclosing a rugose area (Fig. 1), in other cases the propodeum is uniformly rugose-areolate beyond the dorsolateral areas. Propodeal bridge absent. Propodeal spiracles small and round. Metapleuron slightly convex, entirely sculptured, rugose-areolate.

Wings: veins RS and r-m present, thus first and second submarginal cells entirely closed. Second submarginal cell rather long and narrow. First subdiscal cell open postero-apically, vein 2cu-a absent. Veins 1a and 2a absent. Hind wing with vein C+Sc+R longer than vein SC+R. Vein RS arising from vein R far from vein r-m. Marginal cell more or less distinctly narrowed towards apex, without vein r. Vein cu-a present. Vein M+CU about 0.6-0.7 times as long as 1M; vein m-cu straight. Male hind wing without stigma-like swelling of basal veins.

Legs: Fore tibia on inner surface with several long and slender spines arranged along its anterior margin in almost single vertical line. Hind coxa long and narrow, with basoventral tubercle. Claws simple.

Metasoma: first tergite petiolate, long and narrow, usually striate-coriaceous, with some transverse carinae basally, these carinae sometimes reduced. Basal sternal plate (acrosternite) of first tergite long, 0.6-0.7 times as long as first tergite, extended distinctly beyond level of spiracles. Dorsope of first tergite small and shallow; spiracular tubercles indistinct, situated in basal 0.3 of tergite. Second tergite without distinct furrows and areas. Second suture considerably shallow, complete, almost straight in females and distinctly curved in males. Third tergite without transverse furrow and basal area. Tergites behind second with a single transverse line of sparse long erect setae. Ovipositor distinctly darkened apically, with two distinct subapical nodes. Ovipositor sheaths long, about as long as metasoma or slightly longer.

Etymology.

We are very pleased to name this genus after our dear friend and colleague Dr. Sergey A. Belokobylskij, for his great contribution to the taxonomic knowledge of the braconid subfamily Doryctinae. Gender is to be considered masculine.

Type species.

Sergey tzeltal sp. n.

Key to species of Sergey