Cercobelus ulixes Noyes & Hanson, 1996

Noyes, John Stuart, 2023, ENCYRTIDAE OF COSTA RICA (HYMENOPTERA: CHALCIDOIDEA), 4 Subfamily Encyrtinae: tribes Arrhenophagini, Habrolepidini, Cerapterocerini, Cheiloneurini, Trechnitini, Cercobelini, Polaszekiini, Protyndarichoidini, Gahaniellini and Syrphophagini (part), mainly primary parasitoids and hyperparasitoids of Coccoidea and Psylloidea (Hemiptera), Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) 2 (11), pp. 1-921 : 619-620

Cercobelus ulixes Noyes & Hanson

(Figs 1680-1682; Hab. E 249)

Cercobelus ulixes Noyes & Hanson, 1996 :108,110. Holotype E, Costa Rica, NHMUK, examined.

DIAGNOSIS. Female (length about 2.7mm): scape dark brown; scutellum black mainly with a weak brassy sheen; all coxae dark brown; legs largely dark brown with fore and mid tibiae and tarsi mostly pale orange, mid tibia with a white subbasal band, hind tibia white at base; fore wing (Fig. 1682) conspicuously infuscate from linea calva to apex with a hyaline area in disc at apex of stigmal vein and another opposite on posterior wing margin; scrobes short and shallow, not meeting dorsally; antenna (Fig. 1680) with scape about 6.3X as long as broad; pedicel about 2.4X as long as broad; F1 with linear sensilla and slightly longer than F2; funicle with all segments clearly longer than broad; clava very slightly shorter than F2-F4 combined; mandible with one small acute tooth and a broad, straight, truncation with a serrate margin; mesoscutum slightly shorter than pronotum medially in dorsal view; marginal vein (Fig. 1681) 4-5X as long as broad and touching anterior wing margin; propodeum about two-thirds as long as scutellum, with a very shallow, longitudinal median groove and very shallow, irregular, polygonally reticulate sculpture, spiracle separated from anterior margin of propodeum by about its own diameter; gaster longer than head and thorax combined; apex of syntergum smooth. Male (length about 1.8mm): similar to female; head in facial view with inner margins of eyes ventrally virtually straight; antenna with funicle segments at least about 2X as long as broad and clothed in setae that are not longer than diameter of segments; costal cell of fore wing mostly with a single line of setae ventrally but two lines in apical one-third; gaster shorter than thorax.

DISTRIBUTION. Costa Rica.

HOSTS. Unknown.

MATERIAL EXAMINED.

Type material. Holotype E: COSTA RICA, Cartago, La Cangreja , 1950m, vii.1991 (P. Hanson, C. Godoy) . Paratypes: COSTA RICA, 1G, Heredia, Uvita, San Rafael , 1700m, 10.iii.1991 (P. Hanson) . Holotype in NHMUK, paratype in NHMUK .

COMMENTS. Females of Cercobelus ulixes can be distinguished from those of other species of the genus by the relatively long funicle segments, extremely long pronotum and propodeum. The males have unusually short setae on the funicle.