Striatoandricus furnessulus ( Weld, 1944 ) Cuesta-Porta & Melika & Nicholls & Stone & Pujade-Villar, 2022

Cuesta-Porta, Victor, Melika, George, Nicholls, James A., Stone, Graham N. & Pujade-Villar, Juli, 2022, Re-establishment of the Nearctic oak cynipid gall wasp genus Druon Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), with description of five new species, Zootaxa 5132 (1), pp. 1-92 : 78

Striatoandricus furnessulus ( Weld, 1944) , comb. nov.

Figs. 245–246

Andricus furnessulus Weld, 1944: 12 , female, gall

Type examined. Female holotype “Nogales, Ariz. Feb. ‘35”, “ Q. oblongifolia ”, “850”, red “Type No. 56381 U.S.N.M. ”, white “ Andricus furnessulus Weld, 1942 ”, “USNMENT 00802108 ”. Holotype deposited at the USNM, Washington. Pictures of the holotype taken by M. Buffington ( USNM) were examined (http://n 2t.net/ark:/65665/ 39cf39e1b-8994-473c-88b8-ee1d1e852019).

Diagnosis. Resembles Striatoandricus furnessae (Weld) from Mexico which induces a similar but larger gall, but differs from that species in its smaller size, particolored mesosoma, absence of the median mesoscutal line, and a completely reticulate second metasomal tergum.

Galls ( Fig. 243 ). A woolly mass partly or entirely encircling small twigs, measuring up to 30 by 25 mm, pure white or rosy when young, consisting of a large number of separate biconical cells attached at a common point, each covered with long hairs, about 7 by 5 mm; shorter and broader than in S. furnessae ( Weld 1944) .

Biology. Only an asexual generation is known, inducing galls on Q. oblongifolia .

Distribution. USA: Arizona.

Figures

FIGURES 245–246. Striatoandricus furnessulus, comb. nov., asexual female, body habitus: 245, dorsal view, 246, lateral view. Pictures are taken from USNM Holotype collection (http://n2t.net/ark:/65665/39cf39e1b-8994-473c-88b8-ee1d1e852019).

FIGURES 236–244. Galls of Nearctic species from the genera Andricus, Antron, Callirhytis and Striatoandricus, that have a similar aggregated and woolly morphology to the galls induced by Druon species. 236, Andricus tibialis. 237, Andricus tecturnarum. 238, Antron quercusnubila. 239, Callirhytis infuscata. 240, C. lanata. 241, C. furva. 242, Striatoandricus georgei. 243, S. furnessulus. 244, Callirhytis seminator. Galls of different species are given in different scale. Fig 240 courtesy of C.-T. Tang.