Orthocentrus mishana 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 : 222-223

Orthocentrus mishana Veijalainen , sp. nov.

Figs 3 D, 7 D, 9 D, 12 D, 14 D.

Fore wing length 2.1–2.4 mm.

Face medially 1.3–1.4x wider than high; face rather densely pustulate and horizontally strigose, head dorsally papillate between eyes at ocelli, eyes not setose, dorsal ridge of face inbetween antennal sockets without a median prominence; face in profile almost evenly rounded, edge of clypeus lightly impressed, antennal sockets on a shelf but shelf not high; malar groove sharp, almost straight; maxillary palp long, reaching beyond epicnemial carina. In dorsal view, head posteriorly moderately concave, temples very narrow and very slightly protruding posterior of eye, posterior ocellus separated from eye by 0.7x ocellar diameter, anterior ocellus separated from eye by 1.7x ocellar diameter, lacking distinct ocellar-ocular grooves. Minimum distance between antennal sockets about half diameter of socket; antenna slender, with 28–31 (n=9) elongate flagellomeres which gradually slightly shortening towards apex; basal flagellomere 0.5x as wide as high and about 1/2 of length of scape; scape parallel-sided.

Mesosoma smooth and polished except mesoscutum, scutellum and ventral side finely papillate with hairs, some small striae on ventro-posterior corner of pronotum, and propodeum with weak microsculpture.; mesoscutum lacking notauli; in profile, scutellum not particularly high, metapleuron slightly convex; propodeum with posterior transverse carina present between lateral longitudinal carinae, usually strong and raised, median longitudinal carinae complete, lateral longitudinal carinae reach to the level of spiracles or slightly below, spiracles small.

Legs broad, somewhat robust; coxae polished, and femora polished-coriaceous, tibiae and tarsi granulate; hind coxa 1.1–1.2x as long as first tergite, hind femur 2.9x as long as high, hind tibia 3.3–3.6x as long as apical width; tibiae without spine-like setae.

Wings not particularly narrow; fore wing with areolet open, vein Rs evenly upcurved; hind wing with vein cu- a not intercepted, straight.

First tergite apically widening, 1.3–1.5x as long as apically wide; coriaceous-rugose, with two complete or posteriorly almost complete strong median longitudinal carinae, with transverse impressions originating at about middle of tergite, sloping posteriorly, not meeting centrally.

Second tergite 0.7x as long as apically wide; coriaceous-rugose, stubs of median longitudinal carinae present anteriorly, with faint transverse impressions originating at about middle of tergite, sloping posteriorly below second thyridia almost horizontally, sloping anteriorly almost diagonally, not meeting centrally, forming a somewhat triangular impression on tergite; basal thyridia rectangular, pale, second thyridia raised round areas at about middle of tergite, pale. Third tergite sometimes with coriaceous microsculpture, anterior edge with transverse impressions not meeting centrally; basal thyridia narrow elongate, second thyridia round. Remaining tergites smooth. Ovipositor straight, very thin, without notch; ovipositor sheaths with sparse inconspicuous backward-pointing setae, not significantly distinct from other metasomal setae.

Body largely setose except eyes, pronotum, mesopleuron and metapleuron; setae few and scattered on propodeum and posterior sides of coxae

Brown except mouthparts creamy white, face dark creamy to yellow, usually with faint and broad brownshaded horizontal area medially, antennae basally, ventrally yellow, rest light brown, mesopleuron ventrally yellow to orange, sternites creamy white to brownish creamy, legs basally creamy to light yellow, apically darker, light yellow to yellow, hind femur apically brown, sometimes brown on hind tibia.

Male. Unknown.

Biology. Hosts unknown. All specimens were collected from different types of lowland western Amazonian rainforests.

Etymology. Named after the village of Mishana , located by the side of the River Nanay in the National Reserve of Allpahuayo-Mishana ( Peru). The villagers of Mishana helped IES during the first ichneumonid inventory conducted in the area in 1998.

Comments. Compared to the other species that have antennal sockets on a low shelf, completely papillate face, and rounded face profile, O. mishana has glabrous eyes and very little yellowish colouration.

Material examined. Holotype female: ‘ Peru, Dept. of Loreto, Iquitos area, Mishana , 16.11– 1.12.1998, clay, I.E.S. [Ilari E. Sääksjärvi], R.J. [Reijo Jussila] et al. leg., Malaise t., APHI A2/7’ ( ZMUT).

Paratypes: 1 ♀ as holotype but collection dates 1–16.XII.1998 and code A2/8; 2 ♀ Peru, Dept. of Loreto, Iquitos area, Mishana , 16.X–1.XI.1998, varillal, I.E.S., R.J. et al. leg., Malaise t., APHI B3/5 (all MUSM); 1 ♀ Peru, Dept. of Loreto, Iquitos area, Allpahuayo, 8.XI–1.XII.2000, white sand, Sääksjärvi, I.E. et al. leg., Malaise trap, APHI, G2/16; 1 ♀ Peru, Dept. of Loreto, Iquitos area, Allpahuayo, 3–17.XII.1998, clay, I.E.S., R.J. et al. leg., Malaise trap, APHI C2/8 (both ZMUT); 1 ♀ as previous but collection dates 22.I–22.II.2000 and code F1/1 ( BMNH); 1 ♀ Ecuador, Dept. Orellana, Onkone Gare, 0º39’25.7’’ S, 76º27’10.8’’ W, canopy fog., 216.3 m, 8.X.1995, T.L. Erwin et al., Lot#1257; 1 ♀ Ecuador, Dept. Orellana, Tiputini, 22.X.1998, 00º37’55’’ S, 076º08’39’’ W, 220–250 m, canopy fogging, T.L. Erwin et al., Lot#1963 (both USNM).

Figures

FIGURE 3. Lateral views: Orthocentrus wahlbergi species-group (in part). A: bicoloratus, B: flavifrons, C: harlequinus, D: mishana, E: nicaraguensis, F: pallidus. Scale 0.5 mm except in B 1.0 mm.