Biodiversity Data Journal : Taxonomic paper
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Corresponding author: Alexey Reshchikov (alexey.reshchikov@nrm.se)
Academic editor: Anu Veijalainen
Received: 11 Dec 2014 | Accepted: 17 Feb 2015 | Published: 17 Mar 2015
© 2015 Alexey Reshchikov.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Reshchikov A (2015) A new species of Lathrolestes Förster (Hymenoptera: Ichneumonidae) from Peruvian Amazonia. Biodiversity Data Journal 3: e4327. doi: 10.3897/BDJ.3.e4327
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Lathrolestes fiedleri sp. n. is described from Peru. This is the first record of the tribe and the genus for the country.
The subfamily Ctenopelmatinae (Hymenoptera, Ichneumonidae) is poorly represented in the Neotropical region with only 20 of 106 extant genera recorded (
The purpose of this paper is to describe a new species of Lathrolestes from the Peruvian Amazonia. Lathrolestes belongs to Perilissini, one of the nine tribes of the subfamily Ctenopelmatinae. The genus includes 102 species [
Lathrolestes is a rarely collected genus of Ctenopelmatinae, and it is generally poorly represented in collections. This study is based on 1 specimen which was found in the MUSM. The morphological terminology used in this study follows that of Gauld et al. (
Lathrolestes Förster, 1869: 196. Type-species: Tryphon clypeatus Zetterstedt.
Camporychus Förster, 1869. Type-species: Lathrolestes marginatus Thomson;
Culmina Benoit, 1955. Type-species: Culmina ruwenzorica Benoit;
Ecclinops Förster, 1869. Type-species: Tryphon orbitalis Gravenhorst;
Homalomma Förster, 1869. Type-species: Homalomma caliroae Rohwer;
Laphyroscopus Förster, 1869. Type-species: Tryphon gorskii Ratzeburg;
Lathrolestus Thomson, 1883. Type-species: Lathrolestus clypeatus Zetterstedt
Luphyroscopus Thomson, 1883. Type-species: Luphyroscopus gorskii Ratzeburg
Ritzemabosia Smits van Burgst, 1912. Type-species: Ritzemabosia meridionalis Smits van Burgst;
Tryphonopsis Brauns, 1898. Tryphonopsis ensator Brauns
Small to medium sized species, 4.0–7.5 mm. Occipital carina not intercepting hypostomal carina. Clypeus profile almost always flat, its apical margin thick. Head behind eyes usually narrowed. Mandibles with lower tooth distinctly longer than the upper. Pronotum with epomia absent or vestigial, never discernible as a long crescentic ridge. Epicnemial carina never reaching the fore margin of mesopleuron. Notch between postscutellum and propodeum V-shaped. Radius intercepting pterostigma at its middle or before its middle but never at its base. Areolet petiolate, oblique, sometimes absent. 2m-cu with a single bulla. Hind wing with cu-a intercepted below or at its middle. Tarsi not swollen. Tarsal claws pectinate, with basal lobe, or not pectinate. Glymmae deep. Epipleura of second and third metasomal tregites separate from tergites. Apex of subgenital plate of male not incurved on hind margin. Tip of aedeagus somewhat decurved and swollen, its apex rounded. Ovipositor sheath 0.3 to 15 as long as metasomal height. Ovipositor usully stout at base, with notch or nodus at appex but never nidle-like.
Body length 7 mm. Antenna with 20 flagellomeres. Scape 1.3 times as long as wide. Head narrowed behind compound eyes (
Mesosoma smooth, polished, without punctures. Notaulus not impressed. Epicnemial carina moderately high, reaching half of mesopleuron height. Hind tibia compressed. Claws elongate, not pectinate. Hind tarsus as long as hind tibia. Vein 3rs-m vestigial. Fore wing with cu-a strongly postfurcal. Propodeal carinae complete, strongly raised; area superomedia half as long as wide, anterior part (before costula) of area apicalis slightly longer than posterior part (
Metasoma compressed apically, polished, sparsely pubescent. First metasomal tergite as long as apically wide; without shallow median longitudinal impression and lateromedian longitudinal carinae, slightly curved at spiracles; with slightly enlarged epipleurae (
Coloration. Female. Body mostly reddish (
This species differs from other species of the genus by the combination of the following character states: elongate clypeus, 0.5 times as long as medially wide, separated from face by deep groove (
This species is named after Arkady Fiedler.
Peru.
This species seems to be a rare species, and further sampling is needed to clarify its distribution in the Western Amazonia.
In the summer of 2014, while participating in the 8th International Congress of Hymenopterists in Cusco, I had the opportunity to go through the collections of Cusco University and Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos (MUSM). I also did some collecting in South Eastern Peru in August 2014. Previously I had checked the Neotropical Ichneumonidae collections of several other institutions (ANSP, AMNH, NHRS, USNM, ZMUT). Despite all my efforts and the large sampling effort taking place in many Amazonian study localities (
I am thankful to Mabel Alvarado (Kansas University) for her help with material, Anu Veijalainen (University of Turku), Gavin Broad (British Museum of Natural History), Andrew Bennett (Canadian National Collection of Insects), other reviewers for useful notes and for reviewing the manuscript, Jocelyne Sze Shimin (Peterhouse, University of Cambridge) and Anna Soper (University of Massachusetts Amherst) for language corrections. Swedish Museum of Natural History, the Stockholm Entomological Society and C.E. Bomans Donation supported my work in Peru.