Orthocentrus khalaimi Humala 2019, sp. nov.
Creators: name: Humala, Andrei E.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Orthocentrus
Orthocentrus khalaimi

description: Orthocentrus khalaimi sp. nov.
(Figs 3 D, 9 J, 13 J, 16 J, 22)
Material examined. Holotype ♀: México, Tamaulipas, 15 km SSE Cd. Victoria, El Madroño, 1400–1450 m, N 23°36.307′, W 99°13.558′, 12.I.2013, leg. A. I. Khalaim (UAT).
Paratypes: 4 ♀ and 1 ♂ same data as for holotype; 4 ♀ and 1 ♂ same data as for preceding, but the date 26.I.2013 (UAT and ZISP); 1 ♀ Tamaulipas, Tula, Ejido Acahuales, B. Quercus, 1400 m, MT, 29.IV–14.V.2016, leg. E. Ruíz C. & R. Ruíz C. (UAT); 1 ♀ Veracruz, Jalapa, park near Institute de Ecologia, 1260 m, N 19°30.768′, W 96°56.349′, 17–18.II.2009, leg. A.I. Khalaim (UAT).
Description. Female. Fore wing length 3.3 mm.
Face medially 1.2 × as wide as high; face smooth, polished, slightly punctate with some horizontal strigae, eyes not setose, dorsal ridge of face inbetween antennal sockets sometimes without prominence; face profile slightly rounded, edge of clypeus straight, antennal sockets not on a distinct high shelf (Hw/Fp = 5.7); subocular sulcus distinct, sharp, strongly bent towards occiput; maxillary palp reaching slightly beyond fore coxa. In dorsal view, head posteriorly moderately concave, temples moderately long, about 0.5 × eye width, posterior ocellus separated from eye by 1.1 × ocellar diameter, anterior ocellus separated from eye by 2.0 × ocellar diameter, lacking ocellar-ocular grooves. Minimum distance between antennal sockets about 2/3 diameter of socket; antenna comparatively short with 21–23 flagellomeres which slightly gradually shortening towards apex of antenna; basal flagellomere 1.4 × as long as wide and about 1/3 of length of scape; scape nearly parallel-sided.
Mesosoma smooth and polished except for few striae postero-ventrally on pronotum, with weak microsculpture on propodeum; mesoscutum anteriorly with short notauli; in profile, scutellum somewhat high, metapleuron somewhat convex, coriaceous posteriorly; propodeum with posterior transverse carina complete, median longiudinal carinae complete, lateral longitudinal carinae reduced anterior to spiracles, spiracles large.
Legs moderately stout; coxae and femora polished, femora with coriaceous microsculpture especially on posterior side, tibiae and tarsi coriaceous-granulate; hind coxa 1.2 × as long as first tergite, hind femur 3.2 × as long as high, hind tibia 4.1 × as long as apically wide; tibiae with spine-like setae.
Wings not particularly narrow; fore wing with areolet almost petiolate, vein Rs straight; hind wing with nervellus intercepted at lower third.
First tergite slightly widening apically, 1.7 × as long as apically wide, in dorsal view, slightly wider at spiracles; coriaceous, with two indistinct median longitudinal carinae, with diagonal impressions originating at about middle of tergite, sloping posteriorly, not meeting centrally. Second tergite 1.0 × as long as apically wide; coriaceous, basal corners impressed and transverse groove near apical margin bending anteriorly near lateral margins, forming a somewhat uplifted area medially; basal thyridia, nearly oval, contrastingly coloured, second thryridia indistinct, apical margin polished. Remainder of metasoma unsculptured, polished, lacking thyridia; third tergite with coriaceous microsculpture basally. Ovipositor thin, straight, without dorsal notch; ovipositor sheath with sparse setae.
Body setose except eyes, pronotum, mesopleuron and metapleuron, setae scattered on metasoma and posterior sides of coxae.
Dark to blackish brown; frontal orbits light yellow from antennal sockets to occiput, upper edge of face; mouthparts and malar area, subalar prominence, tegula, fore and mid trochanters and trochantelli yellowish creamy; face, clypeus, base of antenna ventrally, propleuron, pronotum in hind corner and ventrally, yellowish brown; fore and mid legs yellowish, hind legs dark brown to brown except coxa apically, trochanter, trochantellus and subbasal band on tibia, lateroapical margins of first and second tergites, third tergite basally and apically yellow to orange; metasoma from third tergite brown.
Male. Antenna with 23 elongate flagellomeres; face, frontal orbits up to occiput, malar space, mouthparts, scapi ventrally, propleuron, pronotum ventrally and dorso-posteriorly, tegula, subtegular ridge, fore and mid legs entirely and hind trochanters yellow, otherwise as in female.
Biology. Hosts unknown. Material collected from cloud forests and lower elevation sites.
Distribution. Mexico (Tamaulipas, Veracruz).
Etymology. Named after A.I. Khalaim—an expert in Tersilochinae and Mexican Ichneumonidae.
Comments. Compared with the other species that have a complete posterior transverse carina, short notauli, and closed areolet, head slightly transverse (Hw/Fp = 5.7), frontal orbits entirely yellow up to occiput, and apical bands on tergites 1–3 light brown, unlike in O. malaris and O. tlaxcalensis; antenna with 21–23 flagellomeres and mesoscutum fuscous, unlike in O. montezuma and O. sierrae; pronotum without yellowish dorsal stripe along its upper side, unlike in O. montanus.
description: Published as part of Humala, Andrei E., 2019, Mexican species of the genus Orthocentrus (Hymenoptera, Ichneumonidae: Orthocentrinae), pp. 1-83 in Zootaxa 4709 (1) on pages 36-37, DOI: 10.11646/zootaxa.4709.1.1, http://zenodo.org/record/3587263