Xenomerus buccatus (Kononova & Kozlov) Mikó & Masner & Deans, 2010

Mikó, I., Masner, L. & Deans, A. R., 2010, World revision of Xenomerus Walker (Hymenoptera: Platygastroidea, Platygastridae) 2708, Zootaxa 2708, pp. 1-73 : 17

Xenomerus buccatus (Kononova & Kozlov) , new combination

Figure 26

Trimorus buccatus Kononova & Kozlov, 2001: 233 . Original description.

FEMALE (Holotype): Length= 0.84 mm.

Light brown; radicle, head and apical tarsomeres dark brown.

FCI =1.28; LCI =1.46; HW/IOS =1.64; head less than 1.5 times as wide as mesosoma (HW/TSL = 1.34); facial striae not reaching midlevel of eye, exceeding frontal patch; frontal patch distinct, frons setae sparse, thin; central keel incomplete; POL less than 1.5 times as long as OOL (POL/OOL =1.2); OOL more than 1.5 times as long as LOL (OOL/LOL =1.66); hyperoccipital carina absent, vertex entirely reticulate, vertex sculpture extending to interocellar area, merging with genal patch; A1 about 3 times as long as radicle (A1/ r =3.11), shorter than clava (A1/cl =0.82).

Epomial carina absent, cervical pronotal area smooth, with sparse setae; lateral pronotal area smooth with few crenulae above pronotal ventral projection; netrion sulcus complete; netrion sculpture not extending onto lateral pronotal area; pronotal suprahumeral and cervical sulci not foveolate; mesoscutum about 2 times as wide as long (TSL/ML =1.95); notaulus short, slightly exceeding transscutal line, distance between posterior end of notauli more than two times as long as distance between posterior end of notaulus and posterolateral edge of mesoscutum; internotaular area entirely sculptured, lateral notaular area smooth; mesoscutellum about 2.5 times as wide as long (SW/SL =2.58); scuto-scutellar sulcus almost as wide medially as laterally; mesoscutellum smooth, with sparse marginal setae; posterior scutellar sulcus not extending onto axillula; sternaulus not separated from anterior row of foveae of mesopleural carina; mesopleural carina incomplete; sulcus along metapleural carina foveolate; metascutellum bluntly triangular, only base striated, with a triangular, semitransparent lamella apically; propodeal lateral carinae inverted V-shaped; propodeal lateral area and plical area with sparse setae, marginal striation not extending medially; posterior propodeal projection indistinct; wings reduced, fore wing as long as mesosoma.

T1 more than 1.5 times as wide as T1+T2 length (T1W/T1+T2L =1.66); T3 more than 1.5 times as wide as long (T3W/T3L =1.77), about 1.2 times as wide as mesoscutum (T3W/TSL =1.27); costae on T3 not reaching 1/5 of tergum; lateral patch of T3 absent; posterior patch of T3 reduced nearly equal to width of 2–3 basal depressions; lateral patch on T4 present, reduced; median patch on T4 absent.

MALE: Unknown.

Diagnosis. Most closely related to X. calligetus , differs in smooth frons, and lateral notaular area, wider mesosoma, reduced wings and less elongate metasoma.

Material examined. Holotype female: RUSSIA: Kunashir Islands , Peschanoe Lake, 18.VIII.1980. S.V.Kononova (original det. label: Trimorus buccatus , K.K.) . Holotype is deposited in ZMAS .