Cornugon reticulatum sp. nov.

(Figs 42–47, 56, 86, 87)

Diagnosis. Vertex anteriorly and upper part of frons with raised, very strong reticulation (Figs 42–44); vertex with a weak median groove (Fig. 44); male flagellomeres strongly pedunculate (Fig. 86); scutellum without median groove (Fig. 45); propodeum without median carina (Fig. 47); petiole 1.5X as long as wide, widest anteriorly and narrowing posteriorly (as in Fig. 22), with transverse carinae and shiny; first gastral tergite covering about 1/3 of gaster.

Similar to C. gibberum, but differing in having upper part of frons and vertex strongly reticulate.

Description. FEMALE. Length 1.1–1.5 mm. Antenna black with metallic green tinges except scape white. Frons black with metallic green tinges. Vertex metallic bluish-green. Mesoscutum metallic bluish-green. Scutellum with anterior ½ (striate part) metallic bluish-green, posterior ½ (reticulate part) golden-green. Propodeum metallic bluish-green. Coxae dark and metallic; femora, tibiae and tarsi white. Wings hyaline. Petiole golden-green. Gaster metallic bluish-purple or metallic bluish-green.

Antenna as in Fig. 87. Frons smooth and shiny except with raised, very strong reticulation above frontal speculum (Fig. 42); antennal scrobes uniting below frontal suture; frontal suture incomplete, terminating at a distance equal to 1/3 diameter of anterior ocellus from each eye margin; tentorial pits distinct (Fig. 42). Vertex with raised, very strong reticulation inside, lateral to, and in front of ocellar triangle (Fig. 44), but smooth and shiny behind ocellar triangle; medially with a groove extending from occipital margin to ocellar triangle.

Mesonotum with a triangular fovea medially between mesoscutum and scutellum (Fig. 45). Mesoscutum with raised, weak reticulation, the meshes transverse (Fig. 45). Scutellum with strong longitudinal striae to smooth medially in anterior ½, and with raised, strong reticulation in posterior ½ (Fig. 45). Dorsellum mostly hidden under scutellum in dorsal view, with just lateral parts extending out from under scutellum (Fig. 45). Propodeum smooth and shiny between plicae (Fig. 47).

Petiole 1.4X as long as wide, with transverse carinae and shiny (Fig. 47). Gaster ovate with first gastral tergite covering about 1/3 length.

MALE. Length 1.3–1.5 mm. Scape pale brown to white. Smooth part of vertex golden or golden-green. Mesoscutum golden or metallic dark purple. Scutellum with anterior ½ golden, golden-green or metallic dark purple. Femora and hind tibia dark brown or white. Gaster dark brown with metallic tinges, with a large white spot in anteromedian ½. Antenna as in Fig. 86. Structure otherwise similar to female except eyes smaller and malar space larger, and antennal scrobes uniting on frontal suture (Fig. 43).

Type material. Holotype female (BMNH) labelled “ Costa Rica, Heredia, Santo Domingo, INBio-Parque, 11– 25.ii.2006, J.S. Noyes". Paratypes. 9Ƥ 43 on cards. COSTA RICA. Alajuela: A.C.A., San Carlos, Parque Nacional Arenal, Sendero Pilón, 600 m, 10˚27'N 84˚43'W, 16.viii–8.ix.1999, G. Carballo (1Ƥ, INBio), and 26.ii.2003 (1Ƥ, BMNH); Cartago: Paraiso, Parque Nacional Tapanti-Macizo de la Muerte, Torre cerca de Estación, 1200 m, LN 560050/193800, 15.ix–19.x.200, D. Rubí (13, BMNH); Guanacaste: Estación Maritza, 10˚58'N 85˚29'W, 700 m, 23.ii.2003, J.S. Noyes (1Ƥ, BMNH); Zona Protectora Nosara, Sendero Las Qrquideas, 500 m, LN 221650/ 382750, 7 –8.ii.2002, I. Jiménez (1Ƥ, CH); Zona Protectora Nosara, Sendero La Ceiba, 600 m, LN 221100 /382950, 20.iii.2002, I. Jiménez (13, INBio); Heredia: with same label data as holotype (23, BMNH, INBio); 3 km S Puerto Viejo, OTS – La Selva, 100 m, 30.iii. 2001, M. Gates (1Ƥ, USNM); Puntarenas: Golfito, Estación Agujas, 300 m, LS 526550/2767501, 1 –14.x.2000, J. Azofeifa (1Ƥ, INBio); Reserva Abs. Cabo Blanco, 09˚35'N 85˚06'W, 30 m, 16–17.ii.2009, J.S. Noyes (2Ƥ, BMNH, CH). ECUADOR. Manta, Monte Cristi, 400 m, 6.ii.1983, L. Huggert (1Ƥ, LUZM).

Etymology. Name referring to the strongly reticulate upper part of frons and vertex. Distribution. Costa Rica, Ecuador.