Synergus castanopsidis ( Beutenmüller, 1918 )

Lobato-Vila, Irene, Equihua-Martínez, Armando, Estrada-Venegas, Edith G., Cibrián-Tovar, David, Barrera-Ruíz, Uriel M. & Pujade-Villar, Juli, 2020, Synergus Hartig species group (Hymenoptera: Cynipidae: Synergini) with partially smooth mesopleurae from the New World, Zootaxa 4822 (1), pp. 1-38 : 13

Synergus castanopsidis ( Beutenmüller, 1918)

Periclistus castanopsidis Beutenmüller, 1918 . Entomol. News 29: 251. Type material: USNM [examined by the second author in Pujade-Villar & Melika (2005)].

Synergus castanopsidis: Weld (1926) . Proc. U. S. Nat. Mus. 68 (10): 112.

Diagnosis. This species differs from the rest of species mentioned in this study by the following combination of traits: frontal carinae present, mesoscutum with weak transversal elements, notauli complete, scutellar foveae large and subquadrate, metasoma dorsodistally incised and with some posterodorosal punctures forming a patch.

Brief redescription. Female antenna 14-segmented, males unknown; F1 1.2 times as long as F2; malar space almost 0.6 times as long as height of compound eye; frons and vertex coriaceous, without punctures; frontal carinae weak, narrow and short; mesoscutum coriaceous with weak, discontinuous transversal elements; notauli complete, narrower and less impressed anteriorly; scutellum wrinkled; scutellar foveae large, subquadrate, weakly sculptured, shallow, separated by a narrow carina; circumscutellar carina weak; inferior half of mesopleurae regularly striate, superior half smooth; metasoma dorsodistally incised, not pointed and with some posterodorsal micropunctures forming a patch; radial cell closed, 2.4 times as long as wide; tarsal claws with a small basal tooth; body mainly black and reddish brown. For more details on the morphology of this species, see Pujade-Villar & Melika (2005).

Distribution. USA. State of California ( Beutenmüller 1918).

Biology. Reared from galls of Dryocosmus castanopsidis (Beutenmüller, 1917) on Chrysolepis chrysophylla (Douglas ex Hook.) Hjelmq. ( Beutenmüller 1918).

Remarks. Synergus castanopsidis was examined and redescribed by Pujade-Villar & Melika (2005).