Encarsia chichenitza 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 : 228-229

Encarsia chichenitza Myartseva , sp. n.

( Figs 9–12 )

Material. Holotype female: México, Yucatán, (Tinum), Chichén Itzá, 15.XI.2007, ex Diaspididae on tree (S.N. Myartseva). Holotype deposited in UCRC.

Length of body = 0.7 mm.

Coloration. Head brownish, frontovertex above and cheeks darker. Antennae light yellow. Mesosoma brown, side lobe and scutellum yellow. Fore wing hyaline, venation light colored. Leg light yellow; fore coxa yellow, mid coxa brownish, hind coxa brown. Gaster brown. Ovipositor sheath brown. Setae yellow on yellow parts of body and dark brown on brown parts.

Structure. Head not wider than mesosoma, 1.3× as wide as long. Frontovertex with tiny transverse striate sculpture behind ocelli and 0.6× as wide as head. Eye 1.4× as long as cheeks. Mandible with three small teeth. Antennae ( Fig. 9 ) inserted at the level of lower margin of eyes. Distance between toruli about 0.7× as long as distance from torulus to eye margin. Antennal radicle short, 1.4× as long as wide. Scape about 4× as long as wide. Pedicel about 1.6× as long as wide and shorter than first funicle segment. First–fourth funicle segments each 2× as long as wide. Club 2-segmented, with slightly longer segments, and slightly longer than the two preceding segments of funicle combined. All funicle segments with one longitudinal sensilla, segments of club with two sensilla each. Mid lobe of mesoscutum with 12 setae, setae at upper and lower corners longer. Sculpture of mid lobe of mesoscutum and axillae large reticulate. Side lobes with 3 setae each, axillae with one seta each. Scutellum 0.8× as long as mid lobe of mesoscutum and about 2× as wide as long. Scutellar placoid sensilla small and widely spaced. Distance between bases of anterior scutellar setae about 0.8× as long as the distance between bases of posterior setae. Anterior pair of setae 0.5× as long as the posterior pair of setae. Fore wing uniformly setose and 2.8× as long as maximum width of wing, marginal fringe about 0.2× as long as width of wing, base with 5 setae. Marginal vein ( Fig. 10 ) slightly longer than submarginal vein and with 7 setae along anterior margin. Hind wing 7.6× as long as wide, its marginal fringe about 1.4× 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. 11 ); first tarsal segment as long as 3 next segments combined. Gastral tergites T2–T7 with 1, 1, 1, 4, 4 and 4 setae on each side, respectively. Ovipositor ( Fig. 12 ) almost not exerted, about 1.6× as long as mid tibia; third valvula with apical setae and about 0.3× as long as second valvifer.

Male unknown.

Comments. Encarsia chichenitza sp. n. is similar to E. pineti Myartseva & Evans , which was described from the State of Tamaulipas. The holotype of the new species was compared with holotype female of E. pineti and is easily separated by the following complex of characters: mesosoma mostly brown versus mostly yellow; all segments of funicle 2× versus less than 2× as long as wide; club 2-segmented versus 3-segmented; mid lobe of mesoscutum with 12 setae versus 6 setae, midtibial spur shorter than versus subequal in length to basitarsus; ovipositor 1.6× versus 1.4× as long as mid tibia.

Etymology. The species is named after the type locality, Chichén Itzá.

Figures

FIGURES 9 – 12. Encarsia chichenitza, sp. n., female: 9, antenna; 10, marginal vein; 11, mid tarsus; 12, ovipositor.