Anteucoila Liu and Engel, 2007

LIU, ZHIWEI, ENGEL, MICHAEL S. & GRIMALDI, DAVID A., 2007, Phylogeny and Geological History of the Cynipoid Wasps (Hymenoptera: Cynipoidea), American Museum Novitates 3583, pp. 1-48 : 17-21

Anteucoila Liu and Engel , new genus

TYPE SPECIES: Anteucoila delicia Liu and Engel , new species.

DIAGNOSIS: The new genus is easily distinguished from all other members of the subfamily (except Jerseucoila , see below) by absence of the characteristic fusion of metasomal T2–4 and by the postpetiolar terga of about equal length along the middorsal line. The only other genus exhibiting these plesiomorphies is Jerseucoila , from which Anteucoila can be differentiated by the strongly sculptured mesoscutellar plate (weakly carinate and weakly granulose in Jerseucoila ), straight path of Rs on the apical border of the marginal cell (distinctly arched apically in Jerseucoila ), the shorter metabasitarsus (elongate in Jerseucoila ), the shorter second

96-9-170).

metasomal tergum (more elongate in Jerseucoila ), and the narrower petiole ( fig. 11 ) (broader in Jerseucoila ).

ETYMOLOGY: The new genus-group name is a combination of ante- (Latin, meaning ‘‘before’’) and Eucoila , type genus of the subfamily. The name is feminine.

Anteucoila delicia Liu and Engel , new species figures 11 , 12

DIAGNOSIS: As for the genus (see above).

DESCRIPTION: Female. Body length 0.63 mm; forewing length 0.6 mm. Body mostly black to dark brown; wings hyaline, without macula or band. Antenna cylindrical, 12-segmented, with distal three flagellomeres conspicuously expanded; pedicel almost spherical, twothirds as long as scape; F1 distinctly longer than F2; elongate placodeal sensilla distinct on at least distal flagellomeres. Frons, vertex, gena, and malar space glabrous; lower face somewhat elevated in upper part; gena not expanded behind compound eye; compound eye longer, slightly more than twice length of malar space. Lateral surface of pronotum glabrous; lateral pronotal carina present. Mesoscutum slightly curved dorsally in lateral view; mesoscutellum posteriorly sloped and dorsally with a central plate; mesopleuron glabrous; mesopectus not protruding ventrally, mesocoxa directed vertically and not inserted on separate, oblique posterior area. Propodeum devoid of processes; lateral propodeal carina distinct. Wings hyaline, with sparse pubescence; all wing margins, especially outer margin, ciliate. Forewing with marginal cell closed, about three times as long as wide; bulla in Sc+R 1 absent; 2r-rs oblique, sloping outward posteriorly; areolet absent; Rs+M reduced, hardly traceable, arising from posterior end of first free abscissa of M (5 basal vein). Metabasitarsus about half as long as combined lengths of second to fifth metatarsomeres; pretarsal claws simple, without basal lobe. Postpetiolar metasomal terga not fused, all subequal in length along middorsal line; hypopygium of female long and slender. Male. Unknown.

HOLOTYPE: Female , RTMP 96.9.785, Late Cretaceous (Campanian), Grassy Lake (110 ° 40 9 W, 49 ° 45 9 N), Alberta, Canada; deposited in RTMP.

2007 LIU ET AL.: EVOLUTION OF CYNIPOIDEA 21

ETYMOLOGY: The specific epithet is derived from the Latin word delicia (meaning ‘‘favorite’’ or ‘‘lovely’’).

Figures

Fig. 11. Photomicrograph of holotype female of Anteucoila delicia Liu and Engel, new genus and species (RTMP-96-9-785).

Fig. 12. Holotype female of Anteucoila delicia Liu and Engel, new genus and species (RTMP-96-9-785); note that the right antenna (lower one in image) is partially pulled from the head capsule and so the basalmost sclerites depicted are not portions of the antenna but are instead sclerotic debris.