Xenomerus feehani Mikó & Masner, 2010

Mikó, I., Masner, L. & Deans, A. R., 2010, World revision of Xenomerus Walker (Hymenoptera: Platygastroidea, Platygastridae) 2708, Zootaxa 2708, pp. 1-73 : 25-26

Xenomerus feehani Mikó & Masner new species

Figures 86, 89, 91, 115

FEMALE (Holotype): Length= 1.15 mm.

Dark brown; head, mesoscutum blackish; mandible, interantennal process, radicle, A1–A6, legs, including coxae, excluding apical tarsomeres, yellow.

FCI =1.16; LCI =1.57; HW/IOS =1.52; head less than 1.5 times as wide as mesosoma (HW/TSL = 1.37); facial striae not reaching midlevel of eye along inner orbit, exceeding frontal patch; frontal patch distinct, not vertically elongated, not reaching eye midlevel; frons setae sparse, thin; central keel incomplete, not reaching eye midlevel; toruli triangle shorter than clypeus height; POL as long as OOL (POL/OOL =1.07); OOL more than 1.5 times as long as LOL (OOL/LOL =1.75); hyperoccipital carina present, blunt, not extending to orbit; vertex reticulate, sculpture extending to frons along inner orbit, interocellar area smooth; genal patch present, not merging with vertex sculpture; A1 more than 5 times as long as radicle (A1/r =5.25), shorter than clava (A1/cl =0.89).

Epomial carina present, diminishing medially; cervical pronotal area smooth, with scattered setae; 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 complete, foveolate; mesoscutum less than 1.5 times as wide as long (TSL/ML =1.37); notaulus almost reaching transscutal line; reticulate sculpture of mesoscutum extending to lateral notaular area, not reaching posterior margin of mesoscutum; internotaular area smooth; mesoscutellum less than 2 times as wide as long (SW/ SL =1.75); scuto-scutellar sulcus slightly diminishing medially, 1.5–2 times as wide laterally as in the middle; mesoscutellum smooth, with sparse, marginal setae; posterior scutellar sulcus extending onto axillula; sternaulus not separated from anterior row of foveae of mesopleural carina; distance between postacetabular sulcus and anterior row of foveae of mesopleural carina 3–4 times as wide as foveae width of postacetabular sulcus; mesopleural carina complete, with complete anterior row of foveae, posterior row of foveae of mesopleural carina diminishing and reduced posteroventrally; sulcus along metapleural carina foveolate; metascutellum sharply pointed; propodeal lateral carinae inverted Y-shaped, shafts slightly curved outward; propodeal lateral area and plical area obscured by pale, sparse setae, marginal striation extending medially; posterior propodeal projection distinct, well developed; fore wing wider than mesoscutum (TSL/WW =0.82); marginal vein 3.5 times as long as stigmal vein (m/st =3.20); hind wing more than two times as wide as marginal ciliae length (HWW/HWS =2.3).

T1 concave dorsally, less than 1.5 times as wide as T1+T2 length (T1W/T1+T2L =1.21); T3 less than 1.5 times as wide as long (T3W/T3L=1.22), as wide as mesoscutum (T3W/TSL =1.07); costae on T3 exceeding apical setae; lateral patches distinct, 3–4 times as long as wide; diameter of posterior patch of T3 nearly equal to width of basal depression; posterior T3 with coriaceous sculpture; anterior half of T4 reticulate, sculpture almost reaching posterior margin of tergum submedially.

Variability (n=4): Length= 1.14–1.17 mm (m=1.15, SD =0.01); FCI =1.14–1.16 (m=1.16, SD =0.01); LCI =1.57 (m=1.57, SD =0.00); HW/IOS =1.50–1.53 (m=1.51 SD =0.01); HW/TSL =1.34–1.37 (m=1.35, SD =0.01); POL/OOL =0.93–1.07 (m=1.01, SD =0.05); OOL/LOL =1.75–2.00 (m=1.87, SD =0.14); A1/ r =5.00–5.37 (m=5.21, SD =0.15); A1/cl =0.82–0.89 (m=0.84, SD =0.03); TSL/ML =1.37–1.44 (m=1.41, SD =0.04); SW/SL =1.75–1.84 (m=1.80, SD =0.03); TSL/WW =0.82–0.83 (m=0.83, SD =0.01); m/st =3.50– 3.68 (m=3.56, SD =0.08); HWW/HWS =2.30–2.50 (m=2.43, SD =0.11); T1W/T1+T2L =1.20–1.21 (m=1.20, SD =0.004); T3W/T3L =1.22–1.23 (m=1.22, SD =0.004); T3W/TSL =1.06–1.07 (m=1.07, SD =0.006).

MALE: Unknown.

Diagnosis. Most closely related to X. kalocsai , differing by POL/OOL, extension of frontal patch and facial striae, sculpture of posterior T3, color of coxae, foveolate sulcus along metapleural carina.

Etymology. Named after T. Feehan, the collector of the holotype and one of the paratypes.

Material examined. Holotype female: MALAWI: Central Region, Kasungu District, Mtunthama , 16.II.1983, J.Feehan, FIT [ CMNH:####] . Paratypes: KENYA: Nyanza Province, Gembe Hills , 1362m, - 0.489,34243, 6–13.X.2005, R.Copeland, dry gallery woodland with Olea europaea ssp. cuspidata , 1♀ [ USNM] . MALAWI: Central Region, Kasungu District, Mtunthama , 16.II.1983, J.Feehan, FIT, 2♀ . TANZANIA: Morogoro Region, Morogoro District, Uluguru Mountains , 8.VIII.1994, J.LaSalle, 1♀ .

Holotype is deposited in CMNH . Paratypes are deposited in CNCI (3) and USNM (1).