Allorhogas copaiba, 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 copaiba sp. nov.

Diagnosis.

This new species and A. inquilinus sp. nov. (described below) are the only two known species of Allorhogas from Brazil with vertex and frons rugose. However, A. copaiba sp. nov. can be distinguished from the latter and the remaining species of Allorhogas from this country by having the following combination of morphological features: 1) frons and vertex striate-rugose and coriaceous (strongly rugose-coriaceous in A. inquilinus sp. nov., usually coriaceous in the remaining species); 2) first metasomal tergite longitudinally costate-rugose and coriaceous (generally longitudinally costate-coriaceous in the remaining species); and 3) vein 2RS distal with m-cu (interstitial with m-cu in A. inquilinus sp. nov., variable in the remaining species).

Description.

Female. Body size 2.9 mm (Fig. 1A ), forewing 2.3 mm. Colour: body entirely honey yellow; palpi pale yellow; scape and pedicel honey yellow; basal two third flagellomeres honey yellow, turning dark brown to apex; eyes silverish; legs yellow; apical tarsomere and tarsal claws black; wings hyaline, stigma yellow; veins yellow to brown; ovipositor sheaths brown to dark brown, ovipositor honey yellow, apex strongly sclerotised.

Head: transverse in dorsal view, 2.1 times wider than its median length (dorsal view) (Fig. 1D ), 0.7 times as long as high (lateral view); occipital carina complete and reaching hypostomal carina before mandible; post ocellar line (POL) 0.8 times as long as ocellar diameter (OD), 0.5 times ocular ocellar line (OOL); frons and vertex striate-rugose and coriaceous, temple and gena rugulose-coriaceous; face rugose, rugose-coriaceous laterally, with a coriaceous area medially; area surrounding eyes, clypeus and gena with large pilosity; clypeus coriaceous-rugulose; frons excavation distinct but not defined by sharp lateral margins; eye 1.3 times longer than wide; eye width 1.6 times longer than temple in dorsal view; malar space 0.4 times eye height and 1.3 longer than width of hypoclypeal depression; mandibles bidentate; antenna with 27 flagellomeres, first flagellomere about 3.7 times longer than wide, 1.1 times longer than second one.

Mesosoma: 1.4 times longer than high (Fig. 1B ) and 1.7 times longer than wide (Fig. 1C ); pronotal collar visible in dorsal view, pronotal furrow wide, deep, scrobiculate-slightly coriaceous; mesoscutum transverse in dorsal view, its median length 0.7 times its width; mesoscutal lobes coriaceous, transversally rugose laterally, median lobe with an indistinct median longitudinal furrow; notauli scrobiculate-rugose, not meeting, reaching the end of scutellum in a longitudinally rugose area; scutellar disc coriaceous, prescutellar furrow with four transverse carinae; mesopleuron coriaceous; subalar groove wide, scrobiculate-rugose; precoxal sulcus wide deep, smooth-coriaceous, running along two thirds of mesopleuron; metapleuron rugose-areolate; propodeum coriaceous basally, with two distinct diverging carinae, rugose-areolate apically in areolar area.

Wings: forewing 3.0 times longer than wide (Fig. 1E ). Pterostigma 2.2 times as long as wide and 0.7 times as long as R. Vein r 0.7 times as long as 3RSa, 0.2 times as long as 3RSb, and as long as r-m. Vein 2RS distal with m-cu, vein RS+Mb absent. Hindwing vein M + CU 0.6 times as long as 1 M, m-cu slightly curved towards wing apex.

Legs: hind coxa with a distinct basoventral tooth. Hind femur 3.0 times longer than wide.

Metasoma: first tergite 1.3 times wider than long, longitudinally costate-rugose and coriaceous; anteriorly delimited by an indistinct transverse carina, with two parallel longitudinal carinae running to apex (Fig. 1F ). Second tergite longitudinally costate-coriaceous, line between second and third tergites distinct and straight; third tergite longitudinally costate-coriaceous on basal half, smooth and polished on apical half; remaining tergites smooth and polished. Ovipositor sheaths 0.9 times as long as metasoma.

Variation.

Body size 2.8-3.0 mm. Antenna with 24-27 flagellomeres.

Male. Similar to female. Body size 2.8-3.0 mm. Antenna with 24-27 flagellomeres. Hind femur swollen, 2.6 times longer than wide. Prescutellar furrow with three transverse carinae.

Holotype.

Female (DCBU 420486). Brasil, São Carlos SP; 16.VI.2001; A. M. P. Dias col.; de galhas de Copaifera langsdorffii (UFSCar).

Paratypes.

(DCBU 420487-91; IBUNAM). Same data as holotype, three females, three males.

Biology.

The type specimens of A. copaiba were reared from spherical galls on stems and buds of Copaifera langsdorffii Desf. ( Fabaceae ) (Fig. 2A ). The inducer of this gall is unknown. These spherical galls are brown, glabrous and relatively big (about 2 cm of diameter). Copaifera langsdorffii has been reported to contain 23 different gall morphotypes ( Costa et al. 2010).

Etymology.

The name of this species refers to its association with the vascular plant genus Copaifera , whose common name in Brazil is Copaíba.

Figures

Figure 1. Allorhogas copaiba sp. nov. (A, E, F female, holotype B, C, D female, paratype) A habitus, lateral, view B mesosoma, lateral view C mesosoma, dorsal view D head, dorsal view E wings F metasoma, dorsal view.

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.