The New World ant parasitoid genus Orasema (Hymenoptera: Eucharitidae) Author Baker, Austin J. Author Heraty, John M. text Zootaxa 2020 2020-11-30 4888 1 1 84 journal article 9442 10.11646/zootaxa.4888.1.1 da69a4c8-2962-4d6d-9abf-627b77bb9116 1175-5326 4297699 574A35A5-A551-4A7E-B2BC-481D703B1BE7 Orasema spyrogaster n. sp. urn:lsid:zoobank.org:act: FE10364A-DC30-4644-844F-051495D785A4 ( Fig. 34 ) Diagnosis. Distinguished from O. johnsoni by features given in the key. FIGURE 34 . Orasema spyrogaster . Holotype female (UCRCENT00540573): A , habitus, lateral; B , head, anterior; C , mesosoma, lateral; D , antenna; E , ovipositor and valvifer, lateral; F , mesosoma, dorsal; G , propodeum, posterior. Description. Female. Length 2.5–3.3 mm ( Fig. 34A ). Color. Scape brown; flagellum dark brown. Coxae brown with iridescence. Head ( Fig. 34B ). HW:HH = 1.2–1.3; face smooth; eyes covered in long, erect setae, IOD:EH = 1.3–1.4; MS:EH = 0.6–0.7; malar depression absent. Mandibular formula 3:2. Temples present, angulate. Flagellum with 8 funiculars, FL:HH = 1.6–1.7; anellus disc-shaped; F2L:F2W = 2.3–2.6, F2L:F3L = 1.3–1.4; following funiculars subequal in length, gradually broader ( Fig. 34D ). Mesosoma ( Fig. 34C, F ). ML:MH = 1.5–1.8. Mesoscutal midlobe smooth; notauli shallow. Scutoscutellar sulcus narrow; frenal line indistinct; axillular sulcus indicated by a strong longitudinal carina. Propodeal disc broadly rounded ( Fig. 34G ). Prepectus smooth. Mesepisternum weakly areolate laterally, smooth ventrally, nearly straight anterior to mid coxa. HCL:HCW 1.9–2; HFL:HFW 4.5–4.6. FWL:FWW 2.5–2.6, FWL:ML = 2.1–2.2; entirely densely setose. Hind wing costal cell entirely setose. Metasoma. PTL:PTW = 1.6–1.8, PTL:HCL = 0.8–1.0, lateral margin rounded. Antecostal sulcus foveate to smooth posteriorly; acrosternite posteriorly rounded. Male. Unknown. Hosts. Unknown. Plant associates. Unknown. Distribution ( Fig. 32 ). Brazil : PA, RR. Collected in April, December. Material examined. Holotype . BRAZIL . Roraima : Amajari , Serra do Tepequem , 3 ° 44’24”N , 61 ° 45’0”W , 1-15.iv.2016 , Rafael et al., Malaise [ , deposited in INPA: UCRCENT00504573] . Paratype . BRAZIL . Par : Utinga , Belem , 1 ° 25’12”S , 48 ° 26’24”W , xii.1966 , S.J. Oliveira [ 1♀ , BLCU: UCRCENT00251376 (former AEIC specimen)] . Etymology. From Greek spyr meaning “basket and gaster meaning “stomach in reference to the odd basketlike structure of the valvifer. Discussion. In all other species of Orasema the valvifer is invariable, being apically rounded with long thin setae covering the surface ( Fig. 33E ), whereas O. spyrogaster uniquely has thick cuticular projections (or digits) at the apex giving it a comb-like appearance, as well as having long thin setae covering the surface ( Fig. 34E ).