Eubazus diadorim, Marigo & Gibertoni & Penteado-Dias, 2023

Marigo, Thaís Coimbra, Gibertoni, Julia & Penteado-Dias, Angélica Maria, 2023, A new species of the genus Eubazus (Hymenoptera: Braconidae: Brachistinae) from Brazil, Zootaxa 5318 (3), pp. 443-446 : 443-444

Eubazus diadorim sp. n. Marigo, Gibertoni & Penteado-Dias

( Figs 1‒8 )

urn:lsid:zoobank.org:act:5E30D012-3523-49D5-95B3-81463416A29C

Material examined. Holotype: female (# DCBU 520.840 ), “Brazil-SP, S„o Carlos, Fazenda Paraizo, S 21° 58’ 30” W 47° 49’ 40”, Malaise (900 m), 11.ix.2021, A.S. Soares col.”. Paratypes: 1 female (# DCBU 500.347 ), “Brazil-SP, S„o Carlos, UFSCar, S 21° 59’ 20” W 47° 53’ 03”, Malaise (860 m), 13.ix.2021, A.S. Soares col.”; 1 male (# DCBU 500.304 ), “BrazilSP, S„o Carlos, Fazenda Canchim-EMBRAPA, S 21° 57’ 40.24” W 47° 51’ 5.40”, Malaise, 10.ix.2021, A. S. Soares & C R. Montoya col.” .

Description of Holotype. Body length 3.2 mm, fore wing length 3.0 mm.

Colour ( Figs. 1, 2 ). Body largely yellow. Middle area of vertex to ocelli dark brown. Mandible pale yellow with teeth dark brown. Base of antenna and flagellomeres dark brown, scapus and pedicellus yellowish brown. Anterior area of pronotum dark brown. Mesoscutum with a dark brown spot on the outer side of notauli. Anterior subalar depression and apical area of mesopleuron dark brown. Sternaulus area and mesosternum dark brown. Wings slightly infuscate, veins and pterostigma dark brown. Legs yellow, except tibia and tarsi of the hind leg, yellowish brown. Dark brown spot on the posterior side of the hind tibia and on apical area of the last two tergites. Head. Covered with setae. In frontal view, face setose, smooth, slightly diverging posteriorly. Tentorial pit deep. Clypeus about 2.0 × wider than high; its ventral margin sculptured; clypeal suture distinct ( Fig. 3 ). Mandible with upper tooth longer than lower tooth. Maxillary palp with 4 segments, labial palp with 3 segments. Face with a small projection below antennal socket. Frons smooth, more setose than the rest of the head. Vertex smooth, sparsely setose. Occipital carina complete, joining with hypostomal carina above mandibular base. In dorsal view, about 1.3 × wider than long; OOL 4.6 × OD, POL 0.2 × OOL; ocelli elliptical arranged in an equilateral triangle; temple rounded with transverse diameter of eye 0.7 × longer than temple ( Fig. 5 ). Eye in lateral view 0.9 × higher than wide. Antenna with 27 antennomeres. Scape longer than wide. Pedicel slightly longer than wide. First flagellomere with glandular opening basally on the outer side, 1.2 × longer than second. Terminal flagellomere pointed apically. Mesosoma ( Fig. 4 ). In lateral view, mesosoma 1.4 × longer than high. Pronotum areolate-rugose to confused-rugulose. Propleuron with ‘V’ shaped wide groove medially. Propleural flange rounded. Mesoscutum rounded in lateral view, with a carina meeting the notauli anteriorly. Notauli deeply areolate, with a longitudinal carina beginning at the anterior area of the mesoscutum and ending near the scutellar sulcus. Middle lobe of mesoscutum punctate anteriorly, lateral lobes smooth, sparsely setose with distinct lateral carina. Scutellar sulcus wide, crenulated. Scutellum smooth, setose. Mesopleuron setose with precoxal sulcus deeply impressed and areolate. Epicnemial carina present. Postpectal carina absent. Metapleuron areolate rugose and sparsely setose. Metanotum areolate rugose. Propodeum sculptured with clearly defined transverse carina in addition to a longitudinal median carina extending only less than anterior half of propodeum. Propodeal areola absent. Hind femur 3.1 × longer than broad medially ( Fig. 1 ). Inner spur of hind tibia about 0.4 × longer than basitarsus. Tarsal claw simple without basal lobe. Fore wing: pterostigma broad, 4.0 × longer than wide and vein r arising from its middle ( Fig. 7 ). Vein r as long as width of pterostigma. Vein 2-SR 2.1 × longer than r. Vein SR1+3-RS ending about halfway between the apex of the pterostigma and the apex of the wing. Vein 1-R1 0.8 × longer than pterostigma. Vein 1-SR absent. Vein 1-M straight and 1.3 × longer than 1-SR+M. Vein cu-a postfurcal. Vein r-m absent, thus second submarginal cell open distally. Crossvein CU1b absent, thus second subdiscal cell open distally. Vein CU1a complete, curving smoothly and reaching the posterior margin. Vein m-cu antefurcal. First subdiscal cell and first submarginal cell present. Hind wing: Vein M+CU 1.1 × longer than 1-M. Vein 2-SC+R longitudinal. Vein cu-a straight. Subbasal cell large. Metasoma. Metasoma 0.7 × longer than head and mesosoma combined. First tergite sculptured, without converging dorsal carina basally, constricted near base with apical width 1.3 × its length and 1.7 × longer than basal width ( Fig. 6 ). Remaining tergites polished, mostly glabrous. Hypopygium short, mostly glabrous, forming a right angle. Ovipositor and sheaths nearly the same length as the metasoma ( Fig. 8 ). Ovipositor sheath setose with distinctive long setae along its entire length.

Female (paratype). Body length 3.3 mm; fore wing length 3.1 mm. Head with clypeus about 2.1 × wider than high; transverse diameter of eye 0.6 × longer than temple (dorsal view); eye 0.8 × higher than wide; first flagellomere 1.2 × longer than second. Legs with hind femur 2.9 × longer than broad medially. Fore wing with pterostigma 3.9 × longer than wide; vein 1- R1 0.9 × longer than pterostigma. Metasoma with first tergite with apical width 1.2 × its length and 2.3 × longer than basal width. Otherwise, similar to holotype .

Male ( Fig. 2 ). Body length 3.1 mm; fore wing length 3.1 mm. Head about 1.5 × wider than long (dorsal view); OOL 4 × OD, POL 0.3 × OOL; antenna with 30–31 antennomeres; first flagellomere 1.1 × longer than second. Mesosoma 1.5 × longer than high (lateral view). Legs with hind femur 2.8 × longer than broad medially. Fore wing with pterostigma 3.8 × longer than wide; vein r 0.8 × longer than the width of pterostigma; vein 2-SR 2.4 × longer than r; vein 1-R1 0.6 × longer than pterostigma; vein 1-M 1.2 × longer than 1-SR+M. Hind wing with vein M+CU 1.3 × longer than 1-M. Metasoma 0.5 × longer than head and mesosoma combined (lateral view); first tergite with apical width 0.7 × its length. Otherwise, similar to holotype.

Figures 1–8 .

Comparative diagnosis. E. diadorim is nearest to E. discrepans and E. longitempora ( Papp, 2005) , but is easily separated from these species by having the fore wing with vein SR1+3-SR curved, reaching the wing margin between the pterostigma and wing apex ( Fig. 7 ), the hind wing with vein cu-a straight, and for its unique coloration among the genus, being almost entirely yellow. The new species is also distinct from E. longitempora by lacking the fore wing vein CU1b and the tarsal claw lobe and from E. discrepans for having the ovipositor shorter than the body.

Distribution. Neotropical. Known only from type locality at S„o Carlos, S„o Paulo, Brazil.

Etymology. The new species is as beautiful and complex as Diadorim, a character from Brazilian literature, presented by Jo„o Guimar„es Rosa in his book Grande Sert„o: Veredas.

Host. Unknown.

Figures

FIGURES 1–8. Eubazus diadorim sp. nov. 1–2, habitus, lateral; 1, holotype, female; 2, paratype, male; 3–5, holotype, female; 3, head, frontal; 4, head and mesosoma, lateral; 5, habitus, dorsal; 6–7, paratype, female; 6, propodeum and first tergite, dorsal; 7, wings; 8, holotype, female, metasoma and ovipositor, lateral.