Ceroptres quadratifacies Lobato-Vila & Pujade-Villar, 2019

Lobato-Vila, Irene & Pujade-Villar, Juli, 2019, Revision of world Ceroptresini (Hymenoptera: Cynipidae) with the description of a new genus and five new species, Zootaxa 4685 (1), pp. 1-67 : 47-49

publication ID	https://doi.org/ 10.11646/zootaxa.4685.1.1
publication LSID	lsid:zoobank.org:pub:5A946337-6921-45CB-B6F8-F64BC48F2D5A
DOI	https://doi.org/10.5281/zenodo.3797509
persistent identifier	https://treatment.plazi.org/id/03E287CB-B205-FFAB-F3D0-8785FC1DFB31
treatment provided by	Plazi
scientific name	Ceroptres quadratifacies Lobato-Vila & Pujade-Villar
status	sp. nov.

Treatment

Ceroptres quadratifacies Lobato-Vila & Pujade-Villar sp. nov.

( Figures 10i, j, l View FIGURE 10 ; 16 View FIGURE 16 a–m; 18b, m)

urn:lsid:zoobank.org:act:096DD207-2EA2-4336-A373-5A32C05684E1

Type material. HOLOTYPE (♀) deposited in UB with the following labels: ‘ MEX: 103, A.N.P. Los Alamitos (San José de Gracia, AGS), 22º8’51.33’’ N, 102º24’46.73’’ W’ (white label) / ‘Ex. gall of Sphaeroteras nr pulchripennis, 2598m, Q. microphylla , (01.iii.2012) 10.iii.2012, A. Equihua and E. Estrada leg.’ (white label) / ‘ Holotype ♀ Ceroptres quadratifacies Lobato-Vila and Pujade-Villar , IL-V desig-2019’ (red label). PARATYPES (9♂ & 1♀) deposited in UB with the following labels: same as the holotype: 2♂ & 1♀; MEX: 120, same as the holotype, (01. iii.2012) 20.iii.2012: 4♂; MEX: P149, same as MEX: 120, Atrusca sp.: 3♂.

Etymology. Substantive in apposition. From the Latin terms ‘ quadratus ’ for square and ‘ facies ’ for face, as this species has face in anterior view subquadrangular-shaped and with a long malar space.

Diagnosis. This species can be easily separated from the rest of Ceroptres by having a long malar space, which is about 0.7 as long as height of compound eye in females and 0.6 in males (usually 0.4–0.5 in the rest of species; rarely 0.6); head in anterior view subquadrangular (with a different shape in the rest of species); and vertical carinae absent, rarely very short and inconspicuous (well developed or present at least close to the toruli in the rest of species, except in C. confertus ).

Description. Female. Length. Body length 2.0 mm (n=2).

Color ( Fig. 10i View FIGURE 10 ). Mainly black. Head, mesosoma and metasoma black; tegulae dark yellow, hypopygium and metasomal segments after the third segment, lighter. Antennae light brown, tips somewhat darker. All coxae and tarsi, as well as femora of hind legs, dark; the rest of the leg, yellow. Wings hyaline, veins pale yellow.

Head. In anterior view ( Fig. 16a View FIGURE 16 ) subquadrangular-shaped, about 1.2 times as wide as high, genae not expanded behind compound eyes. Face with moderately long but not dense pubescence, lower face with short striae radiating from sides of clypeus and almost reaching ventral margin of compound eyes; medially without striae; vertical carinae absent (rarely very short and inconspicuous), even though a very small depressed area is present very close to the toruli, slightly bulged above the clypeus. Clypeus distinct, ventral margin just slightly projected over mandibles. Malar space about 0.7 times as long as height of compound eye. Anterior tentorial pits visible; pleurostomal sulcus absent, epistomal sulcus slightly impressed. Transfacial line about 1.1 times as long as height of compound eye. Toruli situated slightly below mid-height of compound eyes; distance between torulus and compound eye slightly longer than diameter of the toruli; distance between the toruli slightly shorter than diameter of the toruli. Front finely coriaceous, with neither punctures nor frontal carinae. Head in dorsal view ( Fig. 16b View FIGURE 16 ) is about 2.0 times as wide as long. Vertex finely coriaceous and without punctures. POL:OOL:LOL = 9.5:6:4.5 and diameter of lateral ocelli, 3. Occiput finely coriaceous and without punctures.

Antennae ( Fig. 16e, f View FIGURE 16 ). 13-segmented (8: 5: 10: 12: 12: 11.5: 10: 9: 9: 8: 8: 7: 13); filiform, not broadened apically; pubescence dense and short; placodeal sensilla visible on flagellar segments F2–F11. Pedicel almost 1.3 times as long as wide; F1 0.8 times as long as F2, F2 and F3 subequal. Last flagellar segment about 3.3 times as long as wide and almost 2.0 times as long as F10.

Mesosoma. About 1.2 times as long as high in lateral view ( Fig. 16h View FIGURE 16 ), including nucha, with moderately long, but not dense, pubescence. Ratio of length of pronotum medially/laterally: 0.34. Dorsal part of pronotal plate complete, posteriorly with small piliferous punctures, with two distinct and moderately spaced foveae. Lateral pronotum finely coriaceous to alutaceous, without lateral carina. Mesoscutum ( Fig. 16i View FIGURE 16 ) 1.2 times as wide as long, finely coriaceous; anterior grooves shallow, almost inconspicuous, occupying at most 1/3 of the mesoscutal length. Notauli narrow, shallow and almost complete, but faint before reaching the pronotal margin; wider posteriorly. Parapsidal grooves inconspicuous. Median groove visible at most in the posterior 1/4 of the mesoscutum. Mesoscutellum ( Fig. 16i View FIGURE 16 ) rounded, about as long as wide, strongly wrinkled; circumscutellar carina absent; scutellar foveae small, more or less ovate, shallow, not well defined posteriorly, weakly sculptured, very close to each other and parallel to the transcutal fissure. Mesopleuron ( Fig. 16h View FIGURE 16 ) smooth and shiny; little pubescent basally. Metapleural sulcus not well defined, reaching about 4/5 parts of the mesopleural height. Propodeum ( Fig. 16j View FIGURE 16 ) pubescent and smooth; propodeal carinae branched, more or less parallel, sometimes somewhat divergent posteriorly. Nucha weakly sculptured dorsally and laterally, not sulcate.

Legs. Tarsal claws bidentate, with a basal lobe ( Fig. 16g View FIGURE 16 ).

Wings. Forewings pubescent with moderately long marginal setae, slightly longer than mesosoma plus metasoma ( Fig. 10i View FIGURE 10 ). Radial cell closed, 2.7 times as long as wide ( Fig. 16k View FIGURE 16 ); areolet not well defined, anterior and basal veins inconspicuous. Rs+M inconspicuous. Basal cell with closely spaced setae.

Metasoma ( Figs 10i View FIGURE 10 , 16 View FIGURE 16 l–m). Shorter than head plus mesosoma, slightly longer than high in lateral view. First metasomal tergum crescent-shaped and smooth. Second metasomal tergum short and free, 0.4 times as long as the metasomal length and with a dense hair patch anterolaterally. Third metasomal tergum usually with a posterodorsal patch of micropunctures somewhat laterally extended ( Fig. 16m View FIGURE 16 ), sometimes inconspicuous; not dorsodistally incised. Subsequent terga and hypopygium, punctate. Prominent part of the hypopygial spine about as long as wide and not projected.

Male ( Figs 10j, l View FIGURE 10 ; 16c, d View FIGURE 16 ). Similar to female, except for the following morphological traits: body length 1.3–2.0 mm (n=9). Antennae 15-segmented (5: 4: 7: 8: 8: 7.5: 7: 6.5: 6: 6: 6: 5.5: 5: 5: 7); placodeal sensilla present in all flagellar segments; pedicel about as long as wide; F1 somewhat expanded apically ( Fig. 10l View FIGURE 10 ). Vertical carinae very short, inconspicuous. Malar space about 0.6 times as long as height of compound eye ( Fig. 16c View FIGURE 16 ). Third metasomal tergum with a posterior complete narrow band of micropunctures. Wing veins darker and areolet smaller.

Distribution. Mexico. State of Aguascalientes.

Biology. Reared from galls of Sphaeroteras nr pulchripennis ( Fig. 18b View FIGURE 18 ) and from an undetermined species of Atrusca ( Fig. 18m View FIGURE 18 ) on Quercus microphylla Née ( Quercus section ).