Orasema nyamo Burks, Heraty & Dominguez, 2018

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), Zootaxa 4401 (1), pp. 1-107 : 71-73

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https://doi.org/ 10.11646/zootaxa.4401.1.1

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scientific name

Orasema nyamo Burks, Heraty & Dominguez

sp. nov.

Orasema nyamo Burks, Heraty & Dominguez n. sp.

urn:lsid:zoobank.org:act:D589E220-977A-4609-BFBE-D0169051F28D ( Figs 147–154 View FIGURES 147–152 View FIGURES 153–154 )

Diagnosis. Mesoscutal midlobe and mesoscutellar disc areolate to areolate-reticulate. Axillula areolate. Petiole in females extending beyond hind coxal apex. This species is best recognized by its small size in combination with a long petiole and pale flagellum ( Figs 147, 149 View FIGURES 147–152 , 154 View FIGURES 153–154 ).

Orasema yaax differs in having a dark flagellum ( Fig. 263 View FIGURES 261–266 ), and subtly different mesoscutellar sculpture ( Fig. 264 View FIGURES 261–266 ). Orasema stramineipes differs in having an entirely yellow fore femur ( Fig. 207 View FIGURES 207–212 ).

Description. Female. Length 2.4–3.6 mm.

Color: Head and mesosoma green to blue green dorsally, with some purple areas laterally. Pedicel yellowish brown; anellus yellowish brown; flagellum yellowish brown. Coxae brown with metallic luster dorsally, becoming yellow apically; fore femur mostly yellowish-brown, tips pale; fore; mid femur mostly yellowish brown, yellow at tips; hind femur yellow. Fore wing hyaline; venation pale brown. Petiole blue-green; gaster 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 1.5–1.7; malar space:eye height 0.7–0.8; supraclypeal area longer than broad, smooth medially and ventrally, weakly sculptured dorsally and laterally; clypeus smooth to weakly sculptured. Flagellum length:head height 1.6–1.7; F2 2.6–3.2× as long as broad, 1.0–1.3× as long as F3; following funiculars progressively shorter and broader.

Mesosoma: Mesosoma length:height 1.1–1.5. Mesoscutal midlobe areolate-reticulate, becoming areolate posteriorly, with minute setae; lateral lobe areolate-reticulate. Axilla areolate-reticulate; mesoscutellar disc areolate to areolate-reticulate; frenal line regularly foveate; frenum areolate; axillular groove anteriorly narrow, broad and foveate posteriorly; axillula areolate. Propodeum with irregular median carina; propodeal disc areolate; callus areolate-reticulate, with 3–5 setae. Mesepisternum reticulate to areolate-reticulate laterally, smooth ventrally, broadly rounded anterior to mid coxa. Upper mesepimeron mostly smooth, with some weakly reticulate areas; lower mesepimeron areolate-reticulate; transepimeral sulcus distinct. Metepisternum laterally areolate-reticulate. Hind coxa 2.0–2.6× as long as broad; hind femur 6.3–7.1× as long as broad. Fore wing 2.4–2.9× as long as broad, 2.9–3.3× as long as mesothorax; stigma with 4 sensilla separated into pairs. Hind wing costal cell with a broad bare area.

Metasoma: Petiole 2.9–4.0× as long as broad, 1.1–1.3× as long as hind coxa, areolate to areolate-reticulate, anterior carina moderate. Antecostal sulcus crossed by carinae; acrosternite posteriorly angulate.

Male. Unknown.

Distribution. Costa Rica, Panama.

Material examined. Holotype: COSTA RICA: Puntarenas: Monteverde , 1200–1700m, 10°16'30"N, 84°49'32"W, 2–6.xii.1987, Genier & Bertrand [1 ♀, UCRCENT00425947 ], deposited in CNCI GoogleMaps . Paratypes: COSTA RICA: Cartago: La Cangreja , 1950m, viii–ix.1991, Hanson & Godoy [1 ♀, MUCR: UCRCENT00479318 ] . Guanacaste: Estac. Mengo, SW Volcan Cacao , 1100m, 10°56'03"N, 85°27'22"W, 1988– 1989 [1 ♀, UCRC: UCRCENT00413503 ] GoogleMaps . Guanacaste N.P., Pitilla Biological Station , 10°59'31"N, 85°28'20"W, 1.ii.1995, L. Masner, screen sweep [1 ♀, UCRC: UCRCENT00312156 ] GoogleMaps . Heredia: Zurqui de Moravia , 1600m, 10°00'32"N, 84°00'40"W, 3–4.iii.1996, L. Masuev, creekbed, MT [1 ♀, CNC: UCRCENT00425816 (D4642)] GoogleMaps . Puntarenas: Monteverde , 1200–1700m, 10°18'25"N, 84°48'35"W, 2–6.xi.1987, Genier & Bertrand [1 ♀, FSCA: UCRCENT00237529 ] GoogleMaps . Monteverde , 1400m, 10°16'30"N, 84°49'32"W, 30.iv.1989, Hanson [1 ♀, UCRC: UCRCENT00413515 ] GoogleMaps . Monteverde , San Luis Valley, 10°16'23"N, 84°49'27"W, 17.viii.1986, L. Masner [2 ♀, CNC: UCRCENT00425955 ; MUCR: UCRCENT00479300 ] GoogleMaps . Monteverde ; Finca Canada Reserve, 10°15'21"N, 84°48'54"W, 22.viii.1992, D. Currie [11 ♀, CNC: UCRCENT00425948–54 , UCRCENT00425956 , UCRCENT00425959 , UCRCENT00479154–55 ] GoogleMaps . Monteverde , 10°17'05"N, 84°48'48"W, 25–28.v.1998, V. Berezovosky, pan trap [2 ♀, UCRC: UCRCENT00312194–95 ] GoogleMaps . San Jose: Zurqui de Moravia , 1600m, 10°03'00"N, 84°01'00"W, iii.1989, Paul Hanson [1 ♀, UCRC: UCRCENT00413510 ] GoogleMaps . Zurqui de Moravia, 1600m, 10°03'00"N, 84°01'00"W, ix–x.1990, P. Hanson [2 ♀, CNC: UCRCENT00425957–58 ] GoogleMaps . Zurqui de Moravia, 1600m, 10°03'00"N, 84°01'00"W, vii.1990, Paul Hanson [3 ♀, UCRC: UCRCENT00413505–07 ] GoogleMaps . Zurqui de Moravia, 1600m, vii.1991, Paul Hanson [2 ♀, MUCR: UCRCENT00479307–08 ] . Zurqui de Moravia, 1600m, x– xii.1990, Paul Hanson [1 ♀, MUCR: UCRCENT00479314 ] . Zurqui de Moravia, 1600m, x.1995, P. Hanson [2 ♀, MUCR: UCRCENT00479316–17 ] . Zurqui Moravia, 1600m, v.1992, P. Hanson [1 ♀, MUCR: UCRCENT00479313 ] . PANAMA: Chiriqui: 1720m, 8°50'00"N, 82°35'00"W, 15–16.v.1973, J. Helava [1 ♀, CNC: UCRCENT00240937 ] GoogleMaps .

Etymology. The Mangue word for “small,” referring to its generally small size relative to closely related species.


Canadian National Collection Insects


Museo de Insectos


University of California, Riverside


Canadian National Collection of Insects, Arachnids, and Nematodes


Florida State Collection of Arthropods, The Museum of Entomology













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