Orthocentrus concrispus Veijalainen

Veijalainen, Anu, Broad, Gavin R. & Sääksjärvi, Ilari E., 2014, Twenty seven new species of Orthocentrus (Hymenoptera: Ichneumonidae; Orthocentrinae) with a key to the Neotropical species of the genus, Zootaxa 3768 (3), pp. 201-252 : 207-208

Orthocentrus concrispus Veijalainen , sp. nov.

Figs 1 C, 6 B, 8 B, 11 B, 13 B.

Fore wing length 2.2–2.3 mm.

Whole body, especially head, laterally flattened.

Face medially 0.8x wider than high; head entirely smooth and polished except for small coriaceous area on edge of antennal shelf, face with shallow punctures, eyes not setose, dorsal ridge of face inbetween antennal sockets without a median prominence; face profile very straight except just before antennal sockets impressed, edge of clypeus straight, antennal sockets on a high shelf; malar space with narrow, very shallow, slightly sinuous microsculptured sulcus, sometimes represented by discrete, though shallow line; maxillary palp short (broken in holotype), reaching to fore coxa. In dorsal view, head posteriorly deeply concave, temples distinct, posterior ocelli distant from eye by 0.3x ocellar diameter, anterior ocellus separated from eye by 1.0x ocellar diameter, lacking ocellar-ocular grooves. Minimum distance between antennal sockets very narrow, sockets almost touching each other; antenna thick, curled, with 24–25 (n=6) transverse and similar-sized flagellomeres which not gradually shortening apically; basal flagellomere 1.0–1.3x as wide as high and about 1/4 of the length of scape; scape parallel-sided.

Mesosoma smooth and polished except pronotum slightly coriaceous antero-dorsally, posterior edge of pronotum and sometimes upper anterior edge of mesopleuron with short striae, propodeum with very faint coriaceous microsculpture, especially posteriorly (although Guatemalan specimen with glabrous propodeum); mesoscutum lacking notauli; in profile, scutellum not particularly high, metapleuron not convex; propodeum with complete but laterally to lateromedian carinae very faint posterior transverse carina, median longitudinal carinae complete but usually very faint at least anteriorly or, in Guatemalan specimen, present only as posterior stubs, lateral longitudinal carina usually faintly present posterior to spiracle, spiracles small.

Legs all slightly flattened, broad; coxae and femora polished, tibiae and tarsi coriaceous-granulate; hind coxa 1.1x as long as first tergite, hind femur 2.6–2.7x as long as high, hind tibia 3.4–3.8x as long as apically wide; tibiae with stout, spine-like setae.

Wings narrow, cells thus comparatively long and narrow; fore wing with areolet closed but 3rs-m sometimes weak, areolet longer than high, with 2rs-m shorter than 3rs-m, 2m-cu meeting areolet at apical 0.6, areolet relatively small, anterior side obviously shorter than vein Rs+2r, vein Rs straight; hind wing vein cu-a angulate below middle.

First tergite long, elongate, 2.2–2.6x as long as apically wide; sub-polished with low rugose sculpture, with median longitudinal carinae, with faint transverse impressions originating at about middle of tergite, sloping posteriorly, not meeting centrally. Second tergite 1.2x as long as apically wide; mostly polished, with faint striae/ coriaceous sculpture basally and a little around median impression, with very faint transverse impressions originating at about middle of tergite, sloping posteriorly, not meeting centrally; basal thyridia rounded-rectangular, contrastingly coloured. Remaining tergites smooth and polished, lacking thyridia. Ovipositor straight, thin, without notch; ovipositor sheath bluntly pointed, with setae longer than sheath width and strongly curved, backwards pointing.

Body setose except eyes, pronotum, mesopleuron, metapleuron; setae on basal tergites very few, scattered on apical tergites.

Dark brown to blackish brown except mouthparts creamy, sternites creamy to light yellow, fore and mid legs largely yellow, hind trochanter and trochantellus dull orange, antenna with scape, pedicel and first two or (ventrally) more flagellomeres dull yellow/orange, scape slightly darker dorso-proximally. Clypeus and, sometimes, upper middle face of orange shades.

Male. Unknown.

Biology. Hosts unknown. All individuals were collected from mid and high-altitude Central American sites, most from Quercus forests.

Etymology. Named after the Latin for ‘curled’, after the curled antennae.

Comments. Compared with O. pentagonum , which also has antennal sockets on a high protruding shelf, thick, curled antennae, and whole body laterally flattened but not extremely flattened, O. concrispus has a smaller fore wing areolet, paler scape, more flagellomeres, larger ocelli and predominantly glabrous propodeum and second tergite.

Material examined. Holotype female: ‘ Nicaragua, Jinotega, RN Cerro Kilambé, 1310± 10 m, 13.56541, - 85.69785, 22–26 May 2011, Malaise trap, Pasture/cloud forest edge, LLAMA #Ma-D- 05-1-01 ’ ( ZMUT).

Paratypes: 1 ♀ Honduras, Olancho, PN La Muralla, 15.09721ºN, 86.73840ºW, 1480± 30 m, cloud forest, Malaise trap, 2–5.V.2010, LLAMA #Ma-C- 01-3-01; 2 ♀ as previous but coordinates, altitudes, and codes as follows: 15.09943ºN, 86.74352ºW, 1530± 10 m, LLAMA #Ma-C- 01-1-02; 15.09490ºN, 86.73987ºW, 1410± 10 m, LLAMA #Ma-C- 01-2-02 ’; 1 ♀ Guatemala, Baja Vera, Biotopo Quetzal, 1720± 10 m, 15.21278ºN, 90.21552ºW, cloud forest, 7–10.V.2009, Malaise, LLAMA #Ma-B- 02-1-01 ( ZMUT, USNM); 1 ♀ Costa Rica, San José Pv, 20 km S Empalme, Cerro de la Muerte, 2800 m, V.88, Gauld; 1 ♀ Costa Rica, Puntarenas Pv, San Vito, Las Alturas, 1500 m, VII.1991, K. Gaston; 1 ♀ Costa Rica, Puntarenas Pv, Sitio Las Tablas, NE of Sabalito, 1600 m, III.89, Gauld ( BMNH).

Figures

FIGURE 1. Lateral views: Orthocentrus shieldsi species-group (in part). A: anguillae, B: pentagonum, C: concrispus, D: hispidus, E: quercus, F: shieldsi. Scale 0.5 mm.