Orasema worcesteri
Creators: name: Burks, Roger A.
name: Heraty, John M.
name: Dominguez, Chrysalyn
name: Mottern, Jason L.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eucharitidae
Orasema
Orasema worcesteri

description: Orasema worcesteri (Girault, 1913)
urn:lsid:zoobank.org:act:2C9FE90A-FBB8-440D-9470-7D9860A00BB1 (Figs 253–260)
Eucharomorpha worcesteri Girault, 1913: 62 –63. Type material: Paraguay: San Bernardino (1♂). Orasema doello-juradoi Gemignani, 1933: 490 –491. Synonymy by Heraty et al., 1993. Type material: Argentina: Isla Martin Garcia (1 ♀).
Orasema violacea Gemignani, 1947: 8 –9. Name preoccupied by Orasema violacea Ashmead, 1888. syn. n. Type material: Argentina: Isla Martin Garcia (1 ♀).
Orasema gemignanii De Santis, 1967: 8. Replacement name for Orasema violacea Gemignani. syn. n. Orasema worcesteri. Bouček, 1988: 519. Change of combination.
Diagnosis. F2 longer than F3. Head, mesosoma, and petiole finely reticulate. No other reticulate species is as finely reticulate as O. worcesteri (Figs 256, 257), which lacks areolate sculpture on the mesosoma.
Description. Female. Length 2.62–4.04 mm.
Color: Head and mesosoma green to blue with golden to purplish luster, becoming more blue-green laterally. Pedicel yellowish brown; anellus yellow to yellowish brown; flagellum brown. Coxae mostly purple, with some blue green areas, becoming yellow apically; fore femur yellow or brown; mid and hind femora yellow or with a small brown area. Fore wing hyaline; venation brown. Petiole green to blue-green; gaster yellowish or brown with blue to purple luster.
Head: Head width:head height 1.1–1.2; face reticulate; longitudinal groove between eye and torulus absent; eyes bare, inter-ocular distance:eye height 1.5–1.6; malar space:eye height 0.7–0.8; supraclypeal area longer than broad, smooth centrally, weakly sculptured peripherally; clypeus weakly sculptured. Flagellum length:head height 1.0–1.4; F2 2.3–2.7× as long as broad, 1.2–1.5× as long as F3; following funiculars progressively shorter and broader.
Mesosoma: Mesosoma length:height 1.3–1.5. Mesoscutal midlobe finely reticulate, with minute setae; lateral lobe finely reticulate. Axilla areolate-reticulate; mesoscutellar disc areolate-reticulate; frenal line long and irregularly foveate; frenum reticulate; axillular groove anteriorly narrow, broad and foveate posteriorly; axillula areolate-reticulate. Propodeum with irregular median carina sometimes flanked by grooves; propodeal disc medially areolate reticulate, laterally reticulate; callus reticulate, with a few small setae. Mesepisternum mostly reticulate laterally and ventrally, with a small smooth area anteriorly, broadly rounded anterior to mid coxa. Upper mesepimeron reticulate dorsally, smooth ventrally; lower mesepimeron reticulate dorsally, with a small smooth area ventrally; transepimeral sulcus distinct. Metepisternum laterally reticulate. Hind coxa 1.9–2.2× as long as broad; hind femur 5.1–5.4× as long as broad. Fore wing 2.4–2.8× as long as broad, 2.4–2.6× as long as mesothorax; stigma with 4 sensilla separated into pairs. Hind wing costal cell with a broad bare area.
Metasoma: Petiole 1.3–1.5× as long as broad, 0.7–0.9× as long as hind coxa, finely reticulate, anterior carina weak. Antecostal sulcus crossed by carinae; acrosternite posteriorly angulate.
Male. Unknown.
Biology. Parasitoid of Pheidole radoszkowskii (see Heraty et al. 1993).
Distribution. Argentina, Brazil, Paraguay.
Material examined. Holotype: PARAGUAY: San Bernardino [♂, ZMHB: UCRCENT00425195]. Additional material examined: ARGENTINA: Catamarca: Sumalao, 28°26'54"S, 65°46'17"W, 30.i–5.ii.1958, R. Golbach [1 ♀, IFML: UCRCENT00439067]. Las Estancias, 1600m, 27°29'55"S, 66°01'26"W, 15.i.2004, P. Fidalgo [3 ♀, IFML: UCRCENT00439060–61, MACN: UCRCENT00483464]. Salta: Cabeza de Buey, 781m, 24°47'24"S, 64°01'48"W, 21.iii.2003, J. Heraty [2 ♀, UCRC: UCRCENT00169636, UCRCENT00169638]. Rosario de la Frontera, RN9, Lumbrera, Juramento Riv., 681m, 25°12'36"S, 64°54'59"W, 21.iii.2003, J. Heraty [1 ♀, UCRC: UCRCENT00447978 (D1093)]. Tucuman: Amaicha del Valle, 26°35'19"S, 65°55'10"W, xii.1965, H. & M. Townes [1 ♀, EMUS: UCRCENT00476387]. Ticucha, 656m, 26°31'04"S, 65°15'04"W, 16.iv.1986, P. Fidalgo [1 ♀, IFML: UCRCENT00439066]. BRAZIL: Minas Gerais: Serra da Moeda, 20°19'53"S, 44°03'13"W, 18.x.1997, D. Yanega [2 ♀, UCRC: UCRCENT00412875, UCRCENT00412886]. Pará: PNA Tapajos, Urua, km. 65 Trans Am. Hwy, 120m, 4°42'29.8"S, 56°42'24.6"W, 24.vi.1979, L.A. Lacey [12 ♀, UCRC: UCRCENT00397253, UCRCENT00397285, UCRCENT00412812, UCRCENT00412920–22, UCRCENT00413108, UCRCENT00413181–83, UCRCENT00413188, UCRCENT00397270]. PARAGUAY: Caaguazú: Estancia Primera, 25°27'37"S, 56°00'16"W, 1.xii.1931, R. F. Hussey [1 ♀, UMMZ: UCRCENT00243593].
description: Published as part of Burks, Roger A., Heraty, John M., Dominguez, Chrysalyn & Mottern, Jason L., 2018, Complex diversity in a mainly tropical group of ant parasitoids: Revision of the Orasema stramineipes species group (Hymenoptera: Chalcidoidea: Eucharitidae), pp. 1-107 in Zootaxa 4401 (1) on pages 99-101, DOI: 10.11646/zootaxa.4401.1.1, http://zenodo.org/record/1207463