Sergey cubaensis Zaldivar-Riveron & Martinez

Martinez, Juan Jose, Lazaro, Rubi Nelsi Meza, Pedraza-Lara, Carlos & Zaldivar-Riveron, Alejandro, 2016, Sergey gen. n., a new doryctine genus from temperate forests of Mexico and Cuba (Hymenoptera, Braconidae), ZooKeys 589, pp. 143-164 : 150-152

Taxon classification Animalia Hymenoptera Braconidae

Sergey cubaensis Zaldivar-Riveron & Martinez sp. n. Figs 11-17, 18-19

Diagnosis.

This distinctive species can be distinguished from the remaining species of Sergey by having: 1) a mostly yellow body colour (brown to black in the remaining species); 2) head and mesoscutum distinctly sculptured, transversally striate (entirely smooth and polished in the remaining species); and 3) fore wing with vein m-cu reaching vein RS+M basally to 2RS, thus vein (RS+M)b present and distinct (m-cu reaching vein RS+M interstitial with respect to vein 2RS, thus vein (RS+M)b absent in the remaining species).

Description.

Body length 3.1mm (Fig. 11), fore wing 2,5 mm; ovipositor sheaths 3.5 mm. Colour: most part of the body yellow; apical third of propodeum and first metasomal tergite dark brown, second metasomal tergite yellow with lateral areas brown; antennae honey yellow, gradually darkening toward apex, subapical 20th to 23rd segments white (Fig. 15), apical three segments dark brown; fore and middle coxae pale yellow; fore and middle tibiae brown to dark brown; trochanter and trochantellus pale yellow; tarsi brown to dark brown; hind coxa pale yellow basally, dark brown apically; hind femur and tibia with four alternate yellow and dark brown transversal bands. Wings hyaline; pterostigma and veins brown. Ovipositor sheaths yellow to honey yellow.

Head: 0.7 times as high as wide in anterior view (Fig. 12), 0.6 times as long as wide in dorsal view (Fig. 13). Vertex and frons distinctly striate; face, temple and gena smooth (Fig. 14); clypeus transversally striate. Eye 1.2 times higher than wide. Malar space height/eye height ratio 0.3 (Fig. 12). Temple/eye length ratio (dorsal view) 0.4. Antenna with 26 flagellomeres, first flagellomere about four times longer than wide and as long as second.

Mesosoma: about 1.9 times longer than wide and 2.0 times longer than high (Figs 16-17). Pronotal groove wide, deep, and scrobiculate, pronotal carina distinct. Propleuron smooth to slightly rugose. Mesoscutum slightly transverse, 0.7 times as long as wide. Mesoscutal lobes transversally striate with coriaceous microsculpture, notauli deep, complete and scrobiculate (Fig. 17), not joining, reaching the end of mesoscutum, obscuring in an irregular longitudinal rugose median area before reaching the scuto-scutellar suture. Prescutellar sulcus with four distinct carinae. Scutellar disc smooth and triangular. Mesopleuron smooth. Precoxal sulcus, deep and scrobiculate, running along the entire length of mesopleuron. Subalar sulcus deep and scrobiculate. Metanotum with a distinct median carina-like projection. Metapleuron entirely areolate-rugose. Propodeum uniformly areolate-rugose, with two longitudinal carinae joined basally and that immediately diverge forming an areola-like structure.

Wings: fore wing length 3.6 mm, length/width ratio 3.7; vein 1cu-a slightly postfurcal to vein 1M, thus vein (RS+M)b present (Fig. 18); veins 2RS/2M ratio 0.5.

Legs: fore tibia with a row of spines. Hind coxa transversally striate-rugose, with a small but distinct basoventral tubercle..

Metasoma: Basal sternal plate/length of first tergum 0.6. First metasomal tergite 2.5 times longer than apically wide (Fig. 19). Second median tergite longitudinally costate on basal three fourths, smooth on apical fourth. Suture between second and third median tergites sinuate laterally. Remaining terga smooth and polished. Ovipositor length 3.5 mm, 1.8 times longer than metasoma.

Variation.

Body length 3.4-4.3 mm. Temple/eye length ratio in dorsal view 0.4-0.5. Antenna with 26-28 flagellomeres. Prescutellar sulcus with four or five carinae. Fore wing length 3.5-3.6 mm, length/width ratio 3.7-3.8 times its maximum width. Ovipositor length 3.5-4.3 mm, 1.8-2.0 times longer than metasoma.

Males. Unknown.

Distribution.

Known only from the type locality in southern Cuba.

Biology.

Unknown.

Etymology.

This species is named after the Caribbean country where it occurs, Cuba.

Material examined.

Holotype (CNIN): Female, Cuba, Santiago, Gran Piedra Isabélica, 06-14/VII/1995, FIT, Cloud Forest, 1100m, S.B. Peck, DNA voucher number CNIN413, GenBank accession numbers JN870310 (COI), JN870491 (cyt b), KC822012 (EF-1alpha; not included in this work), KC822095 (wingless; not included in this work). Paratype (CNIN): one female, same data as holotype; DNA voucher number CNIN414, GenBank accession numbers JN870311 (COI), JN870492 (cyt b), JN870651 (wingless; not included in this work).