Encarsia albata Myartseva

Myartseva, Svetlana Nikolaevna, Ruíz-Cancino, Enrique & Blanco, Juana María Coronado-, 2013, Four new species of Aphelinidae (Hymenoptera: Chalcidoidea) from Mexico, Zootaxa 3641 (3), pp. 223-232 : 225-226

Encarsia albata Myartseva , sp. n.

( Figs 1–4 )

Material. Holotype female: México, Nuevo León, (Santiago), Puerto Genovevo, 17.V.1984 (col. G. Gordh), UCRC Ent. N 54394.

Length of body = 0.8 mm.

Coloration. Head yellow, ocelli reddish, eyes brown, antennae yellow. Mesosoma light yellow. Fore wing hyaline. Legs light yellow to pale. Gaster light yellow, apices of stylets blackish.

Structure. Head not wider than mesosoma, about 1.4× as wide as high. Frontovertex about 0.6× as wide as head. Eye about as long as cheek. Distance between toruli about 0.6× as long as distance from torulus to eye margin. Antennae ( Fig. 1 ) inserted under level of lower margin of eyes. Antennal radicle 2.4× as long as wide. Scape about 4× as long as wide. Pedicel 1.7× as long as wide and 1.5× as long as first funicle segment. First funicle segment about 1.4× as long as wide, second and third segments subequal in length, 1.6× and 1.4× as long as wide, respectively. Club 3-segmented, slightly wider and longer than funicle. Flagellum with segments 2–6 each with one longitudinal sensillum. Mid lobe of mesoscutum with 4 pairs of setae, placed symmetrically. Scutellum about 0.8× as long as mid lobe of mesoscutum and about 0.7× as wide as long. Scutellar placoid sensilla widely spaced. Anterior pair of scutellar setae slightly shorter than posterior pair, and distance between bases of anterior setae about 0.7× as long as the distance between bases of posterior setae. Fore wing uniformly setose and 3× as long as maximum width of wing, marginal fringe 0.3× as long as width of wing, base with 5 setae. Marginal vein ( Fig. 2 ) with 6 setae along anterior margin. Marginal fringe of hind wing about as long as maximum width of wing. Tarsal formula 5-5-5. Mid tibial spur 0.8× as long as basitarsus of mid tarsus ( Fig. 3 ). Ovipositor ( Fig. 4 ) not exerted, about as long as mid tibia. Third valvula about 0.5× as long as second valvifer.

Male unknown.

Comments. Encarsia albata sp. n. is similar to E. pitilla Myartseva & Evans , but can be distinguished by the following complex of characters: mesosoma and gaster light yellow versus with infuscate parts; mid lobe of mesoscutum with 8 versus 4–6 setae; base of fore wing with 5 versus 9–12 setae, marginal vein with 6 versus 8–10 setae along anterior margin; midtibial spur 0.8× versus subequal in length to basitarsus; and third valvula 0.5× versus 0.2–0.3× as long as second valvifer.

Etymology. The species named is based on the very light, pale color of the body.

Figures

FIGURES 1 – 4. Encarsia albata, sp. n., female: 1, antenna; 2, marginal vein; 3, mid tarsus; 4, ovipositor.