Xenomerus cornutus Kononova & Kozlov 2001
Creators: name: Mikó, I.
name: Masner, L.
name: Deans, A. R.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Scelionidae
Xenomerus
Xenomerus cornutus

description: Xenomerus cornutus Kononova & Kozlov, 2001   
Figures 31, 33  
 Trimorus cornutus Kononova & Kozlov, 2001: 238. Original description.   
 FEMALE (Holotype): Length= 0.71 mm.   
Brown; radicle, trochanters and tarsomeres, except apical brown tarsomeres, yellow.  
 FCI =1.16; LCI =1.5; HW/IOS =1.61; head less than 1.5 times as wide as mesosoma (HW/TSL = 1.40); facial striae not reaching midlevel of eye, exceeding frontal patch; frontal patch distinct; frons setae sparse, thin; central keel incomplete; POL as long as OOL (POL/OOL =1.05); OOL more than 1.5 times as long as LOL (OOL/LOL =1.58); hyperoccipital carina absent, vertex entirely reticulate, vertex sculpture extending to interocellar area, merging posteriorly with genal patch; A1 less than 5.0 times as long as radicle (A1/r =4.20), shorter than clava (A1/cl =0.88).   
 Epomial carina absent, cervical pronotal area smooth, with sparse setae, setal bases pustulate; lateral pronotal area smooth with few crenulae above pronotal ventral projection; netrion sulcus complete; netrion striation not extending onto lateral pronotal area; pronotal suprahumeral and cervical sulci not foveolate; mesoscutum about 1.5 times as wide as long (TSL/ML =1.45); notaulus short, not 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; reticulate sculpture extending to inter and lateral notaular areas, not reaching posterior margin of mesoscutum; mesoscutellum about 2 times as wide as long (SW/ SL =1.91); 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 triangular, only base striated, with a triangular, semitransparent lamella apically; propodeal lateral carinae inverted V-shaped, shafts straight; propodeal lateral area and plical area with dense setae, marginal striation extending medially; posterior propodeal projection indistinct; mesoscutum slightly wider than fore wing (TSL/WW =1.14); marginal vein less than 5 times as long as stigmal vein (m/st =4.75); hind wing about as wide as marginal ciliae length (HWW/HWS =1.08).   
 T1 about 1.3 times as wide as T1+T2 length (T1W/T1+T2L =1.28); T3 1.5 times as wide as long (T3W/ T3L =1.50), about 1.2 times as wide as mesoscutum (T3W/TSL =1.21); costae on T3 not exceeding 1/5 tergum; lateral patch present, reduced; posterior patch of T3 reduced, nearly equal to width of 2–3 basal depressions; lateral patch on T4 present, median patch absent.   
 MALE (n=1): antennae and legs, excluding apical brown tarsomeres; length=0.78; FCI =1.21; LCI =1.48; HW/IOS =1.6; HW/TSL =1.29; POL/OOL =1.0; OOL/LOL =2.0; A1/r =2.77; TSL/ML =1.42; SW/SL =1.78; TSL/WW =1.12; m/st =4.2; 4.66; HWW/HWS =1.07; T1W/T1+T2L =1.04; T3W/TSL =1.0.   
 Diagnosis. Differs from X.calligetus in ventrally smooth frons, posteriorly smooth mesoscutum, more elongate metasoma and narrower fore wing.   
 Material examined. Holotype female: RUSSIA: Primorskiy Krai, Khanka Lake Nature Reserve, 15.VIII.1977, Kononova, (original det. label: Trimorus cornutus K.K.) Other material: JAPAN: Honshu Island, Kanto region, Ibaraki Prefecture, Tsuchiura City, Shishizuka-Oika, 13–25.VII.1989, M.J.Sharkey, MT, marsh, 1♂. Holotype is deposited in ZMAS.
description: Published as part of Mikó, I., Masner, L. & Deans, A. R., 2010, World revision of Xenomerus Walker (Hymenoptera: Platygastroidea, Platygastridae) 2708, pp. 1-73 in Zootaxa 2708 on pages 22-23