Heterospilus ypsilon Marsh sp. n. Figure 300

Female.

Body size: 3.5 mm. Color: head dark brown; scape honey yellow without lateral brown stripe; flagellum brown with apical 5-7 flagellomeres white; mesosoma dark brown; wing veins brown, stigma brown with apex yellow; legs yellow; metasomal tergum 1 dark brown, tergum 2 usually yellow, rarely brown, terga 3-4 brown, remainder of terga yellow. Head: vertex smooth; frons smooth; face smooth; temple in dorsal view narrow, sloping behind eye, width less than 1/2 eye width; malar space greater than 1/4 eye height; ocell-ocular distance slightly greater than twice diameter of lateral ocellus; 25-28 flagellomeres. Mesosoma: mesoscutal lobes weakly granulate or partially smooth; notauli scrobiculate, meeting posteriorly in rectangular costate area; scutellum smooth; prescutellar furrow with 5 cross carina; mesopleuron smooth; precoxal sulcus scrobiculate, extending to posterior margin of mesopleuron by weak carinae; venter smooth; propodeum with basal median areas margined, weakly granulate or smooth, basal median carina present but short, areola distinctly margined, areolar area rugose, lateral areas entirely rugose. Wings: fore wing vein r shorter than vein 3RSa, vein 1cu-a beyond vein 1M; hind wing vein SC+R present, vein M+CU shorter than vein 1M. Metasoma: first tergum longitudinally costate, length greater than apical width; second tergum longitudinally costate; anterior transverse groove present, straight; posterior transverse groove weak or absent; third tergum smooth entirely; terga 4-7 smooth; ovipositor about 3/4 length of metasoma.

Holotype female.

Top label (white, printed) - COSTA RICA: Puntar [;] Golfo Dulce. 10km W [;] Piedras Blancas, 100m [;] VI-VIII 1989, Hanson; second label (red, partially printed and hand written) - HOLOTYPE [;] Heterospilus [;] ypsilon [;] P. Marsh. Deposited in ESUW.

Paratypes.

1 ♀, Costa Rica: Heredia [;] 3km S. Puerto Viejo [;] OTS, La Selva, 100m [;] 1-15 ix 1992, P. Hanson [;] huertos Malaise trap [;] set by G. Wright (ESUW).

Comments.

The smooth metasomal tergum 3, the white apical annulus on the flagellum and the 5 cross carinae in the prescutellar furrow are distinctive for this species.

Etymology.

The specific name is the 20th letter of the Greek alphabet.