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 johnsoni n. sp. urn:lsid:zoobank.org:act: 411E098B-BD75-40C5-A8DB-C220196F556B ( Fig. 33 ) Diagnosis. Distinguished from O. spyrogaster by features given in the key. Description. Female. Length 2.1–2.9 mm ( Fig. 33A ). Color. Scape pale brown; flagellum brown. Fore coxa brown proximally, yellow distally; Mid and hind coxae brown with iridescence. Head ( Fig. 33B ). HW:HH = 1.2– 1.3; face smooth to weakly coriaceous; longitudinal groove between eye and torulus present, small; eyes densely setose, IOD:EH = 1.5–1.7; MS:EH = 0.6–0.8; malar depression weakly impressed between mouth and eye margin. Mandibular formula not observed. Temples present, rounded. Flagellum with 7 or 8 funiculars (first and second funicular partially fused on lateral side of one antenna for one specimen; second and third partially fused medially on both antennae of second specimen), FL:HH = 1.3–1.5; anellus stout, about twice as broad as long; F2L:F2W = 1.6–2.0, F2L:F3L = 0.6–1.3; following funiculars subequal in length, equal in width ( Fig. 33D ). Mesosoma ( Fig. 33C, F ). ML:MH = 1.5–1.7. Mesoscutal midlobe transversely costate; notauli deep. Scutoscutellar sulcus broad; frenal line present as a shallow impression; axillular sulcus distinct and foveate. Propodeal disc flat ( Fig. 33G ). Prepectus weakly rugose to smooth. Mesepisternum weakly rugose laterally, smooth ventrally, broadly rounded anterior to mid coxa. HCL:HCW = 1.6–1.9; HFL:HFW = 4.3–5.0. FWL:FWW = 2.5–2.7, FWL:ML = 2.0–2.2; basal area bare; speculum, costal cell, and wing disc densely setose. Hind wing costal cell with only 1 or 2 irregular rows of setae. Metasoma: PTL:PTW = 1.6–2.0, PTL:HCL = 0.9–1.0, lateral margin with longitudinal carina continuous with basal flange. Antecostal sulcus foveate; acrosternite posteriorly angulate. Male. Unknown. Hosts. Unknown. Plant associates. Unknown. Distribution ( Fig. 32 ). Argentina : BA; Brazil : SP; Uruguay : TA. Collected in February, November. FIGURE 32 . Distribution map of species in the Orasema johnsoni species group. FIGURE 33 . Orasema johnsoni . Holotype female (UCRCENT00238022): A , habitus, lateral; B , head, anterior; C , mesosoma, lateral; D , antenna showing partial fusion of F2 and F3; F , mesosoma, dorsal; G , propodeum, posterior. Paratype female (UCRCENT00439199): E , ovipositor and valvifer, lateral. Material examined. Holotype . URUGUAY . Tacuaremb : 40 km NW Tacuarembo , 200-300m , 31 ° 29’45”S , 56 ° 18’8”W , 2-9.ii.1963 , J.K. Bouseman [ ♀ , deposited in AMNH: UCRCENT00238022] . Paratypes . ARGENTI-NA. Buenos Aires : San Isidro , 34 ° 28’15”S , 58 ° 31’43”W , iv.1958 , J. Daguerra [ 1♀ , USNM: UCRCENT00248388] . BRAZIL . São Paulo : Anhembi , 455m , 22 ° 42’6”S , 48 ° 10’9”W , 12.xi.2012 , E.N.L. Ferreira , Malaise [ 1♀ , DEFS: UCRCENT00439199] . Etymology. Named in honor of James (Ding) Johnson, entomologist and Orasema collector.