Orthocentrus scabrosus, Humala, 2019

Orthocentrus scabrosus sp. nov.

( Figs 8 C View FIGURE 8 , 12 I View FIGURE 12 , 15 I View FIGURE 15 , 18 I View FIGURE 18 , 30 View FIGURE 30 )

Material examined. Holotype ♀: México, Hidalgo, Huasca de Ocampo , rancho Sta.Elena, MT3, 25.XI–26.XII.2005, leg. A. Contreras et al. ( UNAM).

Paratype: 1 ♀ with the same data as holotype ( ZISP) .

Description. Female. Fore wing length 3.0 mm.

Face medially 1.3 × as wide as high; face densely and roughly punctate, pustulate; eyes with very scarce short setae, dorsal ridge of face inbetween antennal sockets without a median prominence; face profile rounded, edge of clypeus rounded, antennal sockets on a shelf but shelf not particularly high (Hw/Fp = 6.1); subocular sulcus bent towards occiput; maxillary palp reaching beyond fore coxa. Frons and vertex strongly punctured. In dorsal view, head posteriorly moderately concave, temples distinct, about 0.25 × eye width, posterior ocellus separated from eye by 1.0 × ocellar diameter, anterior ocellus separated from eye by 1.8 × ocellar diameter, lacking ocellar-ocular grooves. Minimum distance between antennal sockets about 1/3 diameter of socket; antenna with 28 flagellomeres (n=2) which gradually shortening towards apex; basal flagellomere nearly 2.2 × as long as wide and about half of scape length; scape in frontal view a little concave on lateral surface, convex on inner surface.

Mesosoma smooth and polished except for few striae postero-ventrally on pronotum, with weak microsculpture on propodeum; mesoscutum strongly punctured, anteriorly with distinct notauli; in profile, scutellum not particularly high, metapleuron slightly convex; propodeum with posterior transverse carina complete, median longitudinal carinae complete, lateral longitudinal carinae present as a stubs posterior to spiracles, spiracles medium-sized.

Legs moderately stout; coxae and femora polished, femora with coriaceous microsculpture especially on posterior side, tibiae and tarsi coriaceous-granulate; hind coxa 1.1 × as long as first tergite, hind femur 3.2 × as long as high, hind tibia 4.7 × as long as apically wide; tibiae with spine-like setae.

Wings not particularly narrow; fore wing with areolet pentagonal, narrowly sessile (vein 3rs-m depigmented), second recurrent vein ( 2m-cu) meeting areolet at apical 2/3; vein Rs straight; hind wing with nervellus not intercepted.

First tergite slightly widening apically, 1.4 × as long as apically wide, coriaceous, with median longitudinal carinae, with impressions originating at about middle of tergite, sloping posteriorly, not meeting centrally. Second tergite as long as apically wide; coriaceous; transverse groove originating at about middle of tergite, sloping posteriorly near posterior margin; basal thyridia oval/rectangular, contrastingly coloured, second thryridia oval, same colour as surrounding cuticle. Third tergite coriaceous except posterior margin. Remainder of metasoma unsculptured, polished, lacking thyridia. Ovipositor thin, straight, without dorsal notch; ovipositor sheath widened apically, with sparse setae.

Body setose except eyes, pronotum, mesopleuron and metapleuron, setae very scattered on metasoma and posterior sides of coxae.

Dark brown; face yellowish, slightly infuscate dorso-medially; mouthparts, malar area up to level of ventral edge of eye, clypeus and inner orbits light yellow; antenna, fore and mid legs, propleuron, pronotum in dorsoposterior corners and ventrally, tegula yellowish brown; hind legs mostly orange except coxa brown dorsally, tibia fuscous dorsal surface and apically, with yellowish basal band; posterior margins of second and third tergites and remaining tergites brown.

Male. Unknown.

Biology. Hosts unknown.

Distribution. Mexico ( Hidalgo).

Etymology. Named after the sculpture of head and mesoscutum.

Comments. Compared with the other species that have completely papillate face, antennal sockets on a distinct but low shelf, and fore wing with areolet closed, antenna with 28 flagellomeres, unlike in O. contrerasi , pterostigma nearly symmetrical and basal flagellomere 2.1 × as long as wide, unlike in O. flavoorbitalis and O. rhombifer .