Orthocentrus hidalgoensis, Humala, 2019

Orthocentrus hidalgoensis sp. nov.

( Figs 6 C View FIGURE 6 , 11 C View FIGURE 11 , 14 L View FIGURE 14 , 17 L View FIGURE 17 , 23 View FIGURE 23 )

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

Description. Female. Fore wing length 3.4 mm.

Face medially 1.3 × wider than high; face pustulate and horizontally strigose, eyes not setose, dorsal ridge of face inbetween antennal sockets without a median prominence; face profile nearly straight, edge of clypeus slightly impressed, margin straight; head transverse, antennal sockets not on a distinct high shelf (Hw/Fp = 7.3); subocular sulcus slightly bent towards occiput; maxillary palp reaching beyond fore coxa. In dorsal view, head posteriorly moderately concave, temples well developed, about 0.45 × eye width, posterior ocelli distant from eye by 1.1 × ocellar diameter, anterior ocellus separated from eye by 2.1 × ocellar diameter, ocellar-ocular grooves not developed. Minimum distance between antennal sockets about 2/3 of the socket diameter; antenna slender, with 35 elongate flagellomeres which gradually slightly shortening towards apex of antenna; basal flagellomere 1.8 × as long as wide and about 1/2 as scape; scape curved, in frontal view slightly concave on lateral surface, convex on inner surface.

Mesosoma smooth, polished; mesoscutum with notauli, propodeum with some microsculpture; in profile, scutellum not particularly high, metapleuron slightly convex; propodeum with carinae weak, posterior transverse carina present between lateral longitudinal carinae, median longitudinal carinae absent; lateral longitudinal carinae present posterior to spiracles, spiracles medium-sized.

Legs moderately stout, hind leg massive; coxae and femora polished, tibiae and tarsi coriaceous-granulate; hind coxa 0.9 × as long as first tergite, hind femur 3.3 × as long as maximum depth, hind tibia 4.2 × as long as apical width; tibiae with scattered spine-like setae; hind claws enlarged.

Wings comparatively narrow; fore wing with areolet closed, wide, pentagonal, second recurrent vein ( 2m-cu) meeting areolet at apical 0.8; vein Rs straight; hind wing with nervellus intercepted below.

First tergite elongate and almost parallel-sided, 2.5 × as long as apically wide; coriaceous, median longitudinal carinae incomplete or present as weak wrinkles; transverse impressions originating at about middle of tergite, sloping posteriorly, not meeting centrally. Second tergite 1.4 × as long as apically wide; rugose, with anterolateral diagonal impressions connected with more shallow angular posterior transverse groove, forming a somewhat oval uplifted median area; thyridia indfistinct. Third tergite coriaceous basally, sculpture towards posterior edge smooth- er. Reminder of metasoma smooth and polished. Ovipositor thin, nearly straight, without subapical dorsal notch; ovipositor sheath pointed, with moderately long, backwards-directed curved setae.

Body largely setose except eyes, pronotum, mesopleuron, metapleuron, scattered on propodeum and posterior sides of coxae and femora.

Reddish-brown; except face, clypeus, frons and vertex except fuscous interocellar area, base of antenna ventrally, propleuron, pronotum ventrally and dorso-posteriorly, mesoscutum anteriorly and along notauli, scutellum, most of mesopleuron except dorso-posterior part, fore and mid legs except coxae and trochanters, thyridia and apical margins of first and second tergites yellowish rufous; mouthparts, malar space, lower temple, inner orbits, tegula, fore and mid coxae, all trochanters and trochantelli, hind femur and tibia basally and sternites creamy.

Male. Unknown.

Biology. Hosts unknown.

Distribution. México ( Hidalgo).

Etymology. Named after the type locality, state Hidalgo ( Mexico).

Comments. Compared with the other species that have completely papillate face, antennal sockets on a distinct but low shelf, and glabrous eyes, pterostigma nearly symmetrical and basal flagellomere 1.8 × as long as wide, unlike in O. flavoorbitalis and O. rhombifer ; frons and vertex, except for interocellar area yellow, mesoscutum with distinct longitudinal yellow stripes along notaular lines, unlike in O. elongatus and O. longiventris ; first tergite 2.5 × as long as posteriorly wide and mesopleuron mostly orange, unlike in O. ungularis .