Orthocentrus vulgaris, Humala, 2019

Humala, Andrei E., 2019, Mexican species of the genus Orthocentrus (Hymenoptera, Ichneumonidae: Orthocentrinae), Zootaxa 4709 (1), pp. 1-83 : 19-20

Orthocentrus vulgaris sp. nov.

( Figs 3 B , 9 H , 13 H , 16 H , 21 )

Material examined. Holotype ♀: México, Tamaulipas, Gómez Farias , MT 19–26.XII.1998, leg. S. Hernández & C. Covarrubias ( UAT).

Paratypes: 68 ♀ and 1 ♂: Tamaulipas, Gómez Farias, Los Cedros 16. XII.1998, leg. D. R. Kasparyan; Tamaulipas , 8 km N Cd. Mante, El Limon, 26.XII.1998, leg. D. R. Kasparyan; MT 19–26.XII.1998, 26.XII.1998 – 7.I.1999, 16–23.I.1999, 23–30.I.1999, 27.II–20.III.1999, leg. S. Hernández & C. Covarrubias; Tamaulipas , 44 km S Cd. Victoria , MT, matorral, 18–25.XI.2000, leg. D. Kasparyan; Tamaulipas, Gómez Farias, Los Cedros , 340 m, MT, April 2003, leg. D. Kasparyan; Tamaulipas, rancho Sta. Elena , 15 km SW Cd. Victoria , 964 m, MT 14–23.IV.2010, leg. A. E. Humala & E. Ruiz C.; Tamaulipas, Palmillas, Ej. Llano Azúa, Juniperus y mat. espinoso , 1620 m, MT, 13.XI–3.XII.2016, leg. E. Ruíz Cancino & J.M. Coronado B.; Jalisco , 10 km S Tequila , N 20°47.4′, W 103°51.0′, 2750–2850 m, 7.II.2009, leg. A.I. Khalaim; Yucatán, Corral ( SMSC) ; Yucatán, Sudzal Chico ( SMSP) , XI–1999, leg. Hugo Delfín; 1 ♀ Tlaxcala, Nanacamilpa; San Felipe Hidalgo, Ejido Los Búfalos , N 19°28′, W 98°35′ , 2830–2900 m, MT1, 1–26.VIII.2016, leg. A. Contreras & Y. Marquez ( UNAM) ; 4 ♀ Hidalgo, Huasca de Ocampo, rancho Sta. Elena , MT3, 25.XI–26.XII.2005, leg. A.Contreras et al. ( UAT, ZISP, KRC) ; 3 ♀ the same place, but date 25.I–23.II.2006 ( UNAM) ; 2 ♀ Hidalgo, Huasca de Ocampo, rancho Sta. Elena , 2480 m, MT, 25.I–23.II.2006, leg. Meléndez ( UNAM) .

Description. Female. Body length 3.2 (3.8) mm; Fore wing length 2.7–3.2 mm.

Face medially 1.0 × wider than high; face protuberant, almost matt, with faint microsculpture, eyes glabrous, dorsal ridge of face inbetween antennal sockets without a median prominence, inner orbits divergent ventrally; face profile nearly straight, edge of clypeus straight, antennal sockets on a high shelf, (Hw/Fp = 5.1); subocular sulcus sharp, not deep, bent towards occiput; maxillary palp not long, reaching slightly beyond fore coxa. In dorsal view, head posteriorly deeply concave, temples distinct, about 0.2 × eye width, posterior ocelli distant from eye by 0.6 × ocellar diameter, anterior ocellus separated from eye by 1.7 × ocellar diameter, ocellar-ocular grooves present. Minimum distance between antennal sockets about one half diameter of socket; antenna thick, curled, with 26–28 (n=11) similar-sized transverse-quadrate flagellomeres which not gradually shortening towards apex; basal flagellomere 1.1 × as long as wide and about 1/4 of the length of scape; scape parallel-sided.

Mesosoma smooth and polished except pronotum with short striations centrally and postero-ventrally, impuncate, some microsculpture on mesoscutum and propodeum; mesoscutum with indistinct shallow traces of notauli anteriorly; in profile, scutellum somewhat high, metapleuron slightly convex; propodeum with posterior transverse carina clearly present between lateral longitudinal carinae, median longitudinal carinae complete and converging posteriorly, lateral longitudinal carinae clear posteriorly, spiracles small.

Legs all slightly flattened, broad; coxae polished, femora, tibiae and tarsi coriaceous-granulate; hind coxa 1.1–1.2 × as long as first tergite, hind femur 2.9–3.0 × as long as high, hind tibia 4.0–4.1 × as long as apically wide; tibiae with scattered, spine-like setae.

Wings not particularly narrow; fore wing with areolet closed, slightly longer than high, second recurrent vein (2m-cu) meeting areolet at apical 0.7, vein Rs straight, nervulus postfurcal; hind wing with nervellus intercepted at lower third.

First tergite elongate, 1.2–1.3 × as long as apically wide; rugose-coriaceous, with two indistinct median longitudinal carinae, with transverse impressions originating at about middle of tergite, sloping posteriorly, not meeting centrally. Second tergite 0.8–0.9 × as long as apically wide; strigose, posterior margin polished, sometimes with stubs of median longitudinal carinae present anteriorly; with transverse impressions originating at about middle of tergite, meeting centrally; basal thyridia of second tergite oval/elongate, contrastingly coloured. Third tergite coriaceous with narrow basal thyridia, polished apically. Remaining tergites smooth, polished. Ovipositor straight, thin, without dorsal notch; ovipositor sheath pointed, with sparse setae longer than sheath width and backwards pointing.

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

Dark brown except frontal orbital marks, two long triangles on upper face (broad sides dorsal, meeting) and clypeus, propleuron, large longitudinal marks along upper margin of pronotum, tegula, fore and mid legs, hind trochanter, trochantellus and coxa in apical third, yellow; antenna ventrally, basal thyridia and apical margins of tergites 2–4 orangey brown; hind femur infuscate dorsally, hind tibia except for basal third and tarsus fuscous; mouthparts and sternites creamy.

Male. Similar to female. Flagellum with 26 flagellomeres.

Biology. Hosts unknown.

Distribution. Mexico (Hidalgo, Jalisco, Tamaulipas, Tlaxcala, Yucatan).

Etymology. Named after the Latin for ‘jester′—usual, one of the commonest Orthocentrus species in Mexico.

Comments. Compared with the other species that have antennal sockets on a high protruding shelf, thick, curled antennae, whole body not laterally flattened, eyes glabrous, and areolet closed, the areolet as wide as high, unlike in O. areolatus and O. pentagonum ; head more transverse (Hw/Fp = 5.1) and face mostly fuscous, unlike in O. ocampo (Hw/Fp = 3.2). Also similar to O. mexicanus but eyes glabrous, areolet closed, face sculpture fine, basal flagellomere transverse.

Figures

FIGURE 3. Lateral views: Orthocentrus shieldsi (in part) and O. montanus (in part) species-groups.A: ocampo, B: vulgaris, C: zaldivari, D: khalaimi, E: malaris, F: montanus, Scale 1.0 mm.

FIGURE 9. Faces: Orthocentrus shieldsi and O. montanus (in part) species-groups. A: areolatus, B: dorsofuscus, C: fuscipes, D: kasparyani, E: lostuxtlasi, F: microphthalmus, G: ocampo, H: vulgaris, I: zaldivari, J: khalaimi, K: malaris, L: montanus. Scale 0.2 mm.

FIGURE 13. Heads in dorsal view: Orthocentrus shieldsi and O. montanus species-groups. A: areolatus, B: dorsofuscus, C: fuscipes, D: kasparyani, E: lostuxtlasi, F: microphthalmus, G: ocampo, H: vulgaris, I: zaldivari, J: khalaimi, K: malaris, L: montanus, M: montezuma, N: sierrae, O: tlaxcalensis. Scale 0.2 mm.

FIGURE 16. Basal tergites: Orthocentrus shieldsi and O. montanus species-groups. A: areolatus, B: dorsofuscus, C: fuscipes, D: kasparyani, E: lostuxtlasi, F: microphthalmus, G: ocampo, H: vulgaris, I: zaldivari, J: khalaimi, K: malaris, L: montanus, M: montezuma, N: sierrae, O: tlaxcalensis. Scale 0.2 mm.

FIGURE 21. Distribution map of Orthocentrus in Mexico. O. kasparyani, O. pentagonum, O. vulgaris, O. zaldivari