Allorhogas vassununga, Joele & Zaldívar-Riverón & Penteado-Dias, 2021

Joele, Flavia R., Zaldivar-Riveron, Alejandro & Penteado-Dias, Angelica M., 2021, Six new species of Allorhogas (Hymenoptera, Braconidae, Doryctinae) from south and southeast Brazil with host-plant record, Journal of Hymenoptera Research 82, pp. 199-220 : 199

Allorhogas vassununga sp. nov.

Diagnosis.

This new species can be distinguished from the remaining described species of Allorhogas from Brazil by having the following combination of morphological features: 1) first metasomal tergite longitudinally costate-rugose, with two longitudinal carinae only distinct at base (sculpture variable, often with longitudinal carinae running along the entire tergite in the remaining species); 2) frons excavation defined by sharp lateral margins and a median longitudinal carina (frons excavation with or without sharp lateral margins and median longitudinal carina in the remaining species); 3) mesosoma and metasoma mostly dark brown to black, mesopleuron medially and posteriorly and sixth to remaining tergites honey yellow (always with a different colour pattern in the remaining species).

Description.

Female. Body size 3.4 mm (Fig. 6A ), forewing 2.7 mm. Colour: head honey yellow, frons and vertex brown; scape, pedicel and first and second flagellomeres honey yellow, remaining flagellomeres dark brown; palpi honey yellow; eyes black; mesoscutum, propodeum and metapleuron dark brown to black; pronotum honey yellow; mesopleuron dark brown to black anteriorly, turning honey yellow medially and posteriorly; venter of mesosoma dark brown to black; first metasomal tergite dark brown to black, second to fifth tergites dark brown to black, honey yellow along their edges; remaining tergites mostly honey yellow; legs honey yellow; tarsal claws dark brown to black; wings hyaline; forewing veins brown, stigma brown; hindwing veins yellow to light brown; ovipositor sheaths brown on two thirds, turning black to apex; ovipositor honey yellow, apex strongly sclerotised.

Head: slightly transverse in dorsal view, 2.0 times wider than its median length (dorsal view) (Figs 2E , 6B ), and 1.6 times as long as high (lateral view); occipital carina complete and reaching hypostomal carina before mandible; post ocellar line (POL) as long than ocellar diameter (OD), 0.6 times ocular ocellar line (OOL); frons, vertex, temple and gena coriaceous; face coriaceous, laterally rugulose-coriaceous; area surrounding clypeus and gena with large, dense pilosity; frons excavation distinct, defined by sharp lateral margins and a median longitudinal carina; eye 1.4 times longer than wide; eye width 2.5 times longer than temple in dorsal view; malar space 0.4 times eye height and 1.8 times longer than width of hypoclypeal depression; mandibles bidentate; antenna with 28 flagellomeres, first flagellomere about 2.4 times longer than wide, 1.3 times longer than second flagellomere.

Mesosoma: 1.9 times longer than high (Fig. 6D ) and 1.5 times longer than wide (Fig. 6F ); pronotal collar short but visible in dorsal view, pronotal furrow wide, deep and scrobiculate; mesoscutum transverse in dorsal view, its median length 0.8 times its width; mesoscutal lobes coriaceous, notauli scrobiculate, not meeting, reaching the end of scutellum in a strongly-rugose area; scutellar disc slightly coriaceous, prescutellar furrow with four transverse carinae; mesopleuron coriaceous, subalar groove wide and scrobiculate; precoxal sulcus wide, deep, coriaceous-slightly scrobiculate, running along 0.5 of mesopleuron; metapleuron areolate-rugose; propodeum basally coriaceous, with two distinct diverging carinae, areolate-rugose apically in areolar area.

Wings: forewing 2.7 times longer than wide (Fig. 6E ). Pterostigma 3.0 times as long as wide and 0.8 times as long as R. Vein r 0.5 times as long as 3RSa, 0.2 times as long as 3RSb, and 0.8 times as long as r-m. Vein 2RS interstitial with m-cu, vein RS+Mb absent. Hindwing vein M + CU 0.9 times as long as 1 M, m-cu distinctly curved towards wing apex.

Legs: hind coxa with distinct, pointed basoventral tooth. Hind femur 4.1 times longer than wide.

Metasoma: first tergite 1.3 times wider than long, longitudinally costate-rugose, with two longitudinal carinae only distinct at base, anteriorly delimited by a transverse carina (Fig. 6C ). Second and basal half of third tergite longitudinally costate, line between second and third tergites indistinct, slightly sinuate; apical half of third and remaining tergites slightly punctate. Ovipositor sheaths 0.6 times as long as metasoma.

Variation.

Body size 3.0-3.4 mm. Antenna with 28-30 flagellomeres.

Male. Similar to female. Body size 3.6 mm. Antenna with 29 flagellomeres. Hind femur swollen, about 3.6 times longer than wide.

Holotype.

Female (DCBU 420468). Brasil, SP, Santa Rita do Passa Quatro, Parque Estadual de Vassununga, "Cerrado Pé-do-Gigante”; armadilha Malaise 1; 27.II.2006; A. M. Penteado-Dias col.

Paratypes.

(DCBU 420467-69 IBUNAM). 4 females, 1 male. Same data as holotype.

Biology.

Unknown.

Etymology.

The name of this new species refers to the locality where the type specimens were collected, Parque Estadual de Vassununga, in the state of São Paulo, Brazil.

Figures

Figure 2. A spherical gall on a stem of Copaifera langsdorffii Desf. (Fabaceae) from where A. copaiba sp. nov. was reared B A. ilexaffinis sp. nov., head, frontal view C A. quarentenus sp. nov., head, frontal view D A. inquilinus sp. nov., head, frontal view E A. vassununga sp. nov., head, dorsal view F A. viridis sp. nov., head, frontal view.

Figure 6. Allorhogas vassununga sp. nov. (A-E female, holotype F female paraype) A habitus, lateral, view B head, dorsal view C metasoma, dorsal view D metasoma lateral view E wings F mesosoma, dorsal view.