Revision of the Orasema festiva species group (Hymenoptera: Chalcidoidea: Eucharitidae) Author Burks, Roger A. Author Mottern, Jason Author Heraty, John M. text Zootaxa 2015 3972 4 521 534 journal article 10.11646/zootaxa.3972.4.4 b2e26577-9ea8-4d2b-a1fb-c85f6075a499 1175-5326 239969 07B5C9C6-9029-496C-BF19-89C71E424ADB Orasema festiva (Fabricius) urn:lsid:zoobank.org:act:9158E6C1-5171-4A6C-BBC1-2DC2DF6156AD ( Figs 22–25 ) Eucharis festiva Fabricius, 1804 : 157 . Orasema festiva ; combination by Kirby 1886 : 29 ; Heraty 2002 : 52 (taxonomy). Diagnosis. Face flattened and smooth, with very short setae, and with a strongly impressed longitudinal groove between torulus and eye. Mesoscutal midlobe transversely costate, lateral lobe strigate ( Fig. 23 ). Petiole without a dorsal carina, smooth and parallel-sided ( Fig. 24 ). FIGURES 22–25 . Orasema festiva . Female (UCRCENT00417464): 22, head, anterior; 23, mesosoma, dorsal; 24, petiole, dorsal; 25, metasoma, ventral, acs = antecostal sulcus. Similar to O. alvarengai , which has a more finely strigate midlobe and a laterally expanded petiole. Female. Length, 3.4–4.5 mm . Head and mesosoma metallic bluish green to purple; pedicel and anellus pale brown, flagellum dark brown; coxae yellow, metatrochanters dark brown medially; petiole black with metallic luster; gaster dorsally dark brown with metallic luster, ventrally pale brown without metallic luster, except anterior region of Ms2 black with metallic luster. Head triangular, 1.5× as long as broad ( Fig. 22 ). Face with broad depression enclosing longitudinal groove lateral to torulus, smooth and glossy with sparse setae; scrobal depression medially with a broad flat median carina bordered laterally by narrow foveate furrow. Eye bare. Labrum with 8 digits. Palpal formula 3-2. Pedicel as broad as F2; flagellum 2.0–2.1× height of head; F2 2.2–2.4× as long as broad, F2 1.1–1.2× as long as F3. Mesosoma ( Fig. 23 ). Mesoscutum with midlobe transversely costate and lateral lobe strigate with patch of fine sculpture near its center, dorsally with minute setae. Axilla obliquely strigate; mesoscutellar disc areolate-rugose, as long as broad, broadly separated from transscutal articulation at base by deep fovea; frenum areolate-rugose anteriorly. Propodeal disc areolate-rugose with irregular median longitudinal carina; callus smooth, with a few tiny setae. Fore wing 2.6× as long as broad; stigmal vein 2.0–2.5× as long as broad, slightly angled to anterior margin. Metasoma with petiole 1.5–1.6× as long as metacoxa, 4.0× as long as broad, parallel-sided in dorsal view, dorsally smooth, without longitudinal dorsal carina ( Fig. 24 ). Hypopygium with few minute setae apically. Ovipositor weakly curved cephalad; ventral (1st) valvula with subapical lateral line of 6–8 blunt teeth; dorsal (2nd) valvula with 8–11 rasp-like annuli meeting along midline. Male. Unknown. Type material examined . Lectotype . “ TYPE , E: festiva , ex Am: mer: Schmidt. LECTOTYPE , Eucharis festiva, Fabricius, 1804 , Det: Heraty” [♀, ZMUC : zmuc00241186, images of specimen and labels available from ZMUC online database]. Additional material examined. BRAZIL : Mato Grosso: [no locality], 7.iii.1968 , O.W. Richards, R.S.& R.G.S. Exped., gallery forest [1♀, BMNH : UCRCENT00239435; homotype established by Heraty]; Barra do Tapirapé, 180m , 10°40'00"S , 50°33'00"W , 10.xii.1962 , B. Malkin [1♀, CASC : UCRCENT00417464].