Allorhogas bassettia Samacá-Sáenz, Zaldívar-Riverón et Egan, 2020

Samacá-Sáenz, Ernesto, Egan, Scott P. & Zaldívar-Riverón, Alejandro, 2020, Species Diversity in the Braconid Wasp Genus Allorhogas (Doryctinae) Associated With Cynipid Galls on Live Oaks (Quercus: Fagaceae) Using Natural History, Phylogenetics, and Morphology, Insect Systematics and Diversity 4 (2020), No. 3, pp. 1-20 : 12-13

Allorhogas bassettia Samacá-Sáenz, Zaldívar-Riverón et Egan sp. nov.

( Fig. 7 A–D).

( urn:lsid:zoobank.org:act:FBA497BD-9654-4581-A8ED-DEE5093ED0CE ).

Diagnosis. This species can be distinguished from the remaining described species of the genus associated with cynipid galls in southeastern United States by having: 1) darker background color, mainly in the metanotum and in the area surrounding the scutellar disk (whitish-yellow to honey yellow in the remaining species), 2) absence of a medial longitudinal furrow in the medial mesoscutal lobe (wide, deep and scrobiculate in the remaining species), and 3) propodeum area enclosed by carinae distinctive coriaceoustransversally rugulose (rugose-areolate, slightly coriaceous-rugulose or smooth and polished in the remaining species). Al. bassettia can also be distinguished by its association to stem galls made by Ba. pallida on Q. geminata .

Female. Body size 2.4 mm ( Fig. 7A ), forewing 1.9 mm. Color: body color honey yellow; metanotum and area surrounding scutellar disk dark brown to black; wings hyaline, stigma, and veins brown.; ovipositor sheaths brown turning black to apex, ovipositor brown.

Head: slightly transverse in dorsal view, 2.1 times wider than its median length ( Fig. 7B ), and 1.3 times wider than high; occipital carina complete and reaching hypostomal carina before the mandible; POL as longer than OD, 0.2 times OOL; face coriaceous-transversally rugose, frons excavation distinct coriaceous-transversally rugose, without sharp lateral margins; vertex, temple and gena coriaceous; eye 1.3 times longer than wide; eye width 2.3 times longer than the temple in dorsal view; malar space 0.3 times eye height and as long as the width of hypoclypeal depression; mandibles bidentate; antenna with 22 flagellomeres, first flagellomere about 3.5 times longer than wide, 1.2 times longer than the second one.

Mesosoma: 1.5 times longer than high and 1.9 times longer than wide; pronotal collar very short, visible in dorsal view, pronotal furrow scrobiculate; mesoscutum slightly transverse in dorsal view, its median length 1.3 times its width; mesoscutal lobes coriaceus; notauli distinct deep, and scrobiculate, running along the end of mesoscutum in a posterior longitudinal scrobicutalete median area; scutellum coriaceous; prescutellar furrow with five transverse carinae; propodeum coriaceous-slightly rugulose basally, remaining area slightly coriaceus-transversally rugulose, basal areas delimited by distinct carinae; mesopleuron mainly coriaceous; subalar sulcus scrobiculate-slightly coriaceus; precoxal sulcus wide deep, wide, slightly scrobiculate running along most part mesopleuron.

Wings: forewing 3.4 times longer than wide ( Fig. 7C ). Pterostigma 2.9 times as long as wide and 0.7 times as long as R. Vein r 0.8 as long as 3RSa, 0.2 times as long as 3RSb, 1.5 as long as r-m. Vein 2RS interstitial with m-cu, vein RS+Mb absent. Hind wing vein M + CU 0.6 times as long as 1 M, m-cu slightly curved towards wing apex.

Legs: fore tibia with a row of spines along anterior margin. Hind coxa with a small basoventral tooth. Hind femur 3.4 times longer than wide.

Metasoma: first tergite wider than long, 0.7 times as long as its apical width, longitudinally costate-slightly coriaceous, anterior delimited by a transverse carina ( Fig. 7D ). Second and third tergite longitudinally costate-coriaceous; suture between second and third tergites distinct and slightly sinuate; fourth tergite mostly costate-coriaceous, slightly punctate apically. Remaining tergites slightly punctate. Ovipositor about 0.8 times as long as metasoma.

Variation. Body color whitish-yellow to light brown. Body size 2.2– 2.8 mm. Antenna with 19–23 flagellomeres. Prescutellar furrow with four transverse carinae.

Male. Unknown. Biology. Reared from stem galls of asexual generations of Ba. pallida on Q. geminata in Camp Helen , Florida. Gall harvest was made on 18-III-2019; emergence occurred approximately 1 mo after the galls were collected, on 24-IV-2019.

Etymology. The name of this species refers to the cynipid host genus that induces the gall from which it was reared.

Material Examined. HOLOTYPE (IB UNAM): one female, Camp Helen, FL, 24-IV-2019, ex. galls of Bassettia pallida on Quercus geminata, K. Weinersmith, DNA voucher number CNIN4272. PARATYPES (IB UNAM): two females, same data, DNA voucher number CNIN4271.

Figures

Fig. 7. Allorhogas bassettia sp.nov. Female,Holotype: (A) habitus, lateral, view; (B) head and mesosoma, dorsal view; (C) forewing; (D) metasoma, dorsal view.