Xenomerus malawi 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 : 33-34

Xenomerus malawi Mikó & Masner , new species

Figure 85

FEMALE (Holotype): Length= 1.50 mm.

Dark brown; head, mesonotum blackish; mandible, interantennal process, radicle, trochanteres, tibiae and tarsi, except light brown apical tarsomeres, yellow; coxae, femora, antenna light brown.

FCI =1.13; LCI =1.70; HW/IOS =1.59; head less than 1.5 times as wide as mesosoma (HW/TSL = 1.28); facial striae not reaching midlevel of eye along inner orbit, exceeding and partly obscuring 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 about as long as OOL (POL/OOL =0.93); OOL more than 1.5 times as long as LOL (OOL/LOL =1.66); hyperoccipital carina present, blunt, not extending to inner orbit; vertex reticulate; genal patch present, merging with vertex sculpture; A1 more than 5 times as long as radicle (A1/r =5.33), nearly equal to clava (A1/cl =0.96).

Epomial carina present, diminishing medially; cervical pronotal area smooth, with scattered setae, setal bases pustulate; lateral pronotal area near epomial carina finely coriaceous, above pronotal ventral projection crenulate; netrion sulcus complete; netrional sculpture not extending onto lateral pronotal area; pronotal suprahumeral and cervical sulci complete, foveolate, pronotal suprahumeral sulcus strongly diminishing medially; mesoscutum less than 1.5 times as wide as long (TSL/ML =1.34); notaulus normal, almost reaching transscutal line; reticulate sculpture of mesoscutum extending to lateral and inter notaular areas, more transverse on internotaular area; mesoscutellum less than 2 times as wide as long (SW/SL =1.87); scutoscutellar sulcus slightly diminishing medially, 1.5–2 times as wide laterally as in the middle; mesoscutellum crenulate anteriorly, 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 2–3 times as wide as foveae width of postacetabular sulcus; mesopleural carina complete, with complete rows of foveae; 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; fore wing distinctly wider than mesoscutum (TSL/WW =0.83); marginal vein more than 3.5 times as long as stigmal vein (m/st =3.46); hind wing about 3.5 times as wide as marginal cilia length (HWW/HWS =2.20).

T1 with small hump anteriorly, less than 1.5 times as wide as T1+T2 length (T1W/T1+T2L =1.12); T3 less than 1.5 times as wide as long (T3W/T3L=1.26), as wide as mesoscutum (T3W/TSL =1.07); costae on T3 exceeding level of apical setae; lateral patch distinct, extending medially almost as wide as long diameter of posterior patch of T3 equal to width of 2–3 basal depressions; posterior T3 without coriaceous sculpture; anterior half of T4 entirely reticulate.

MALE: Unknown

Diagnosis. Most closely related to X. feehani , differing in anteriorly crenulate mesoscutellum, color of coxae, extension of lateral patch on T3, sculpture of posterior T3.

Etymology. Named after the type locality.

Material examined. Holotype female: MALAWI: Central Region, Kasungu District, Mtunthama , 16.II.1983, J.Feehan, FIT [ CMNH:####].

Holotype is deposited in CMNH.