Macroteleia yaguarum Perrichot & Engel

Perrichot, Vincent, Antoine, Pierre-Olivier, Salas-Gismondi, Rodolfo, Flynn, John J. & Engel, Michael S., 2014, The genus Macroteleia Westwood in Middle Miocene amber from Peru (Hymenoptera, Platygastridae s. l., Scelioninae), ZooKeys 426, pp. 119-127 : 120-123

Taxon classification Animalia Hymenoptera Platygastridae

Macroteleia yaguarum Perrichot & Engel sp. n. Figs 1-2

Type material.

Holotype MUSM-A-2006-4a, female, in amber fragment from the Pebas Formation (Mollusc Zone MZ7, late Middle Miocene, ~12 Ma; Wesselingh et al. 2006), Tamshiyacu locality, 30 km upstream of Iquitos, northeastern Peru ( Antoine et al. 2006); deposited in the Paleontology Department of the Museo de Historia Natural, Universidad Nacional Mayor San Marcos, Lima, Peru (MUSM).

Diagnosis.

The new species can be characterized by the following combination of features: Antenna discolorous; flagellum with F1 elongate, nearly as long as F2+F3; clavus comprising six flagellomeres (F5-F10); face and vertex contiguously punctured; mesoscutum without median longitudinal carina, integument contiguously punctate; notauli not areolate or foveate; metapleuron and dorsal and ventral surfaces of metasoma largely rugulose punctate; metasoma elongate, integument largely rugulose punctate; tergum 4 (T4) laterally compressed and dorsally humped; integument largely dark brown to black, without areas of obviously yellowish or reddish maculation.

Description.

Female. Body length 5.23 mm; forewing length 2.70 mm, maximum width 0.73 mm; integument generally dark brown to black, wings subhyaline, veins dark brown; body elongate, cylindrical (Fig. 1A, B).

Head 0.55 mm long, 0.58 mm high, 0.74 mm wide, densely punctate, punctures large, appearing almost areolate, those of vertex contiguous, slightly smaller on face and gena (Fig. 2 A–D); compound eyes oval, large, maximal diameter 0.43 mm, anteriorly bordered by a foveate groove; lateral ocelli well distant from each other, very close to inner margin of eyes; preoccipital ridge carinate, bordered anteriorly by foveate groove; antenna with 12 articles, discolorous, with scape, pedicel, and F1-F4 dark brown, remaining flagellomeres black; scape elongate, about 2.5 × length of pedicel; pedicel longer than wide; F1 slightly longer than pedicel, three times as long as wide, finely microsetose; clavus comprising apical six flagellomeres (F5-F10), with basiconic sensilla on ventral surface distributed 2-2-2-2-2-1; mandibles small, each with three small teeth along apical margin.

Mesosoma 1.17 mm long, 0.65 mm wide. Pronotal dorsal surfaces lateral to mesoscutum with large areolate punctures arranged in two longitudinal rows, those closest to mesoscutum largest, anterior and lateral edges strongly carinate (Fig. 2C); pronotal lateral surface below carina impunctate, smooth. Mesoscutum with punctures similar to those of vertex, contiguous, without median longitudinal carina; notauli deeply impressed, not areolate, slightly wider posteriorly than anteriorly, converging posteriorly but not meeting, terminating at transscutal sulcus and well separated from each other; mesoscutellum sculptured as on mesoscutal disc, except posterior margin with single transverse row of large foveae. Netrion with anterior border composed of single dorsoventral row of posteriorly-opened areolae; mesopleuron with large, central, longitudinal depression, integument otherwise rugulose punctate, punctures nearly contiguous. Metanotum with single transverse row of large areolae, distinctly larger than those of posterior border of mesoscutellum; metapleuron with coarse, nearly contiguous rugulose punctures. Propodeum without armature, continuous medially. Legs imbricate and apparently impunctate; tibial spur formula 1-1-1; protibial calcar apically bifid; pretarsus with large arolium. Forewing membrane subhyaline (Fig. 2E); submarginal vein elongate, bearing a row of elongate setae; marginal vein elongate, as long as stigmal vein; postmarginal vein much longer than stigmal vein, total length greater than combined lengths of marginal and stigmal veins. Hind wing with complete vein bearing three distal hamuli apically, with well-defined posterior fringe of setae (Fig. 2F).

Metasoma elongate, 3.90 mm long, maximal width 0.50 mm, with narrow laterotergites; T2 about as long as T3; terga and sterna rugulose punctate, punctures arranged in loose rows, punctures separated by one puncture width, or more often less on S1-S3, punctures contiguous by S4 and onward; sterna without median longitudinal carina; T6 elongate, laterally compressed, dorsally humped, longitudinally striate (Fig. 2G).

Male. Unknown.

Etymology.

The specific epithet is a patronym for the native ethnic group Yagua, long-settled in the Tamshiyacu area, Maynas, Loreto.

Comments.

In Muesebeck’s (1977) key to New World species of Macroteleia , the fossil will run to Macroteleia surfacei Brues, a species from eastern North America. Macroteleia yaguarum sp. n. differs from Macroteleia surfacei most notably by the non-foveolate notauli (foveolate in Macroteleia surfacei ), the contiguous punctures of the vertex (shagreened and impunctate on vertex in Macroteleia surfacei ), and the continuous propodeum (medially divided propodeum in Macroteleia surfacei ), among other details of integumental sculpturing (see Muesebeck 1977).