Rhoptromeris koponeni Costa Baião & Forshage 2018, sp. nov.
Creators: name: Costa Baião, Guilherme
name: Forshage, Mattias
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Figitidae
Rhoptromeris
Rhoptromeris koponeni

description: Rhoptromeris koponeni sp. nov.   
(Figure 3c,d)  
 Diagnosis   
 Head and body chestnut brown to dark brown, metasoma often somewhat paler, 1.2– 1.6 mm, marginal cell elongate, approximately 3 times as long as wide. The species is most likely to be confused with R. strobigena, from which it can be distinguished by the longer marginal cell and less humped mesonotum, and by the antennae, which are considerably longer in females and with more elongate flagellomeres in males.   
 Description   
Female antenna the same size as body, 13-segmented, scape, pedicel, flagellomeres 1–3 yellow or light brown, flagellomeres 4–13 brown. Flagellomeres subequal in size, F1 slightly shorter. Indistinct club of 7 articles, bearing rhinaria, each not much wider than pre-club flagellomeres, F4 often a transitional shape and colour. Male antenna 1.8× body size, 15-segmented, light brown or brown. Flagellomeres 1 and 2 somewhat paler, flattened on outer side, second flagellomere longer than neighbour articles, moderately curved, with rhinaria on about two-thirds of its extent. Compound eyes and ocelli large.  
Mesonotum, smooth, with a few scattered setae, weakly arched. Pronotal plate with lateral bridges, foveae confluent in the middle forming a transverse furrow (Figure 2c).  
Scutellar plate elongate, elliptical, flat to slightly convex with a distinct margin and large posterior glandular pit. A few smaller pits present anteriorly, sometimes with a seta in the middle. Foveae of average size and depth. Lateral bars longitudinally striate basally. Dorsal scutellar surface with striation irradiating from scutellar plate (Figure 6b) and running more or less longitudinally, sculpture sometimes irregular near the rim. Dorsal surface with a line of setae along its rim, separated from lateral surface by a carina.  
Mesopleural line present as a ridge. Lateral surface of metapleura glabrous, except for 2 or 3 long setae on dorsal region. Anteroventral cavity round, filled with hair (Figure 1b). Surface mostly smooth, sometimes 1 or 2 small ridges arising from posterior margin and running anterodorsally. Posterior margin weakly depressed above ventral callus. Posterior incision of metapleura absent.  
Propodeum, more or less pubescent laterally, with tuft of hair behind posteroventral depression on metapleura. Propodeal carinae straight, converging dorsally.  
Hairy ring often incomplete dorsally, interruption larger in males. Dense in females, more sparse in males.  
Legs yellow, metacoxae elongate, with a small posteroproximal tuft of short hair.  
Wings broad, hyaline, pubescent, hair fringe not particularly long. Marginal cell closed, rather deep, elongate, almost 3 times as long as deep, vein 2r sometimes slightly arched, subequal to or slightly shorter than Rs, Rs straight. Venation brown, some accessory veins lightly coloured.  
 Etymology   
 Named after the Finnish hymenopterist Martti Koponen, who collected and loaned, from his personal collection, a large number of Rhoptromeris specimens studied for this work.   
 Distribution   
Europe: specimens seen from Czech Republic, England, Finland, Ireland, Scotland, Sweden.  
 Holotype   
Female: FINLAND: Ristiina, 8 July 1978, M. Koponen (coll. Koponen).  
 Paratypes   
(5 females, 4 males): CZECH REPUBLIC: Bohemia mer Vráž u Písku, 28 May 1994, V. Barták (1 male, OLML). FINLAND: SOUTHERN FINLAND, Mikkelin mlk, 20 June 1980, M. Koponen, (1 male, coll. Koponen), Mikkelin mlk, 11 July 1981, M. Koponen (1 male, coll. Koponen), Ristiina, 4 July 1980, M. Koponen (1 female, coll. Koponen); Uusimaa, Espoo, 10 August 1980, M. Koponen (1 female, coll. Koponen); Savonia australis: Mikkelin mlk 6839:506 26 June 1999 M. Koponen leg (1 female, coll. Koponen). SWEDEN: Småland, Nybro kommun, Bäckebo, Grytsjöns naturreservat, 56.931407°N 16.085536°E, old moist haymaking meadow in forest edge, 2–12 July 2005, Swedish Malaise Trap Project (2 females, 1 male, NHRS).  
 Additional material   
FINLAND: SOUTHERN FINLAND, Mikkelin mlk, 15 June 1975 M. Koponen leg (1 male, coll. Koponen), Mikkelin mlk, 1 August 1981 M. Koponen leg (1 female, coll. Koponen); Ostrobothnia media: Lappajärvi 7020:331 31 July 1995 M. Koponen leg (1 male, coll. Koponen); Nylandia: Nurmijärvi 6704:381 9 July 1992 M. Koponen leg (1 female, coll. Koponen); Savonia borealis: Sonkajärvi 7082:521 8 July 2000 M. Koponen leg (1 male, coll. Koponen); Tavastia borealis: Hankasalmi museo 6909:3466 11 July 2009 M. Koponen leg (1 male, coll. Koponen); SWEDEN Skåne, Revinge s:n, N Krankesjön (VB0440 7470) 23 June 1993 (14.45–16.00) Moist birch stand, surrounded by oak; sweepnetting. Leg Michael Söderlund (1 male, MZLU), Ivö 9 June 1949 Leg Tord Nyholm? (1 female, SLU), Småland, Nybro kommun, Bäckebo, Grytsjöns naturreservat, 56.931407°N 16.085536°E, Old moist haymaking meadow in forest edge, 2–12 July 2005, Swedish Malaise Trap Project (1 male, NHRS).  
 Biology   
 Specimens collected from end of May to beginning of August. In Sweden, specimens were captured in a meadow along a forest edge. One specimen was collected in a boggy birch grove surrounded by oak. Probably a parasitoid of Chloropidae (Diptera), like other Rhoptromeris species.
description: Published as part of Costa Baião, Guilherme & Forshage, Mattias, 2018, Revision of the West Palaearctic species of Rhoptromeris Förster, 1869 (Hymenoptera: Figitidae: Eucoilinae), pp. 1201-1224 in Journal of Natural History (J. Nat. Hist.) (J. Nat. Hist.) 52 (17 - 20) on pages 1214-1216, DOI: 10.1080/00222933.2018.1447154, http://zenodo.org/record/5174636