Orasema arimbome Dominguez, Burks & Heraty, 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 : 16-19

Orasema arimbome Dominguez, Burks & Heraty n. sp.

urn:lsid:zoobank.org:act:A3AA1AB0-9854-4E68-BCEE-16A374F318C0 ( Figs 11–18 )

Diagnosis. F2 longer than F3; funiculars dark brown. Mesoscutal midlobe and mesoscutellar disc areolate; mesoscutal midlobe with a forked or paired reddish area anteriorly. Axilla with distinct longitudinal and oblique carinae anteriorly (dorsally). Axillula areolate but with some longitudinal carinae. Stigmal vein narrow, at nearly a right angle with wing margin. Propodeum medially without reticulate sculpture.

This species is similar to O. stramineipes and O. yaax in having a usually large body size, but more strongly resembles O. pirca and others with a completely areolate axillula. It is especially similar to O. pirca , from which it differs in having some longitudinal axillular carinae amidst its areolate sculpture ( Fig. 15 ) instead of having a regularly areolate axillula, and in having a differently shaped stigmal vein ( Fig. 16 versus Fig. 160 ). These differences are slight, but are upheld by distinctive molecular differences.

Description. Female. Length 4.0– 5.1 mm.

Color: Head and mesosoma green with reddish to yellowish luster on the mesoscutum medially, axilla laterally, and at frenal groove. Pedicel pale brown; anellus pale brown; flagellum brown. Coxae brown to greenish; fore femur mostly brown, tips pale; mid and hind femora yellow. Fore wing slightly infuscate ( Fig. 11 ); venation dark brown. Petiole green; gaster brown to green.

Head: Head width:head height 1.1; face reticulate; longitudinal groove between eye and torulus present; eyes bare, inter-ocular distance:eye height 1.5–1.6; malar space:eye height 0.6–0.8; supraclypeal area longer than broad, smooth; clypeus smooth. Flagellum length:head height 11.6; F2 3.0–3.3× as long as broad, 1.3× as long as F3; following funiculars subequal in width, progressively shorter.

Mesosoma: Mesosoma length:height 1.4–1.5. Mesoscutal midlobe coarsely areolate, with minute setae; lateral lobe areolate to nearly smooth. Axilla areolate with some longitudinal and oblique carinae anteriorly (dorsally); mesoscutellar disc areolate, with broader sculpture posteriorly; frenal line irregularly foveate; frenum areolatereticulate; axillular groove anteriorly absent, broad and foveate posteriorly; axillula areolate-reticulate with longitudinal carinae. Propodeum areolate, with irregular or no median carina; propodeal disc areolate; callus areolate-reticulate, with 3–5 setae. Mesepisternum areolate-reticulate laterally, smooth ventrally, broadly rounded anterior to mid coxa. Upper mesepimeron smooth; lower mesepimeron areolate-reticulate; transepimeral sulcus distinct. Metepisternum laterally nearly smooth dorsally, areolate-reticulate ventrally. Hind coxa 2.1–2.3× as long as broad; hind femur 6.4–7.8× as long as broad. Fore wing 2.6–2.7× as long as broad, 2.9–3.0× as long as mesothorax; stigma with 5 sensilla, 2 basal and 3 apical. Hind wing costal cell with a broad bare area.

Metasoma: Petiole 2.7–2.8× as long as broad, 1.0–1.2× as long as hind coxa, areolate but sometimes nearly smooth anteriorly, anterior carina moderate. Antecostal sulcus crossed by carinae; acrosternite posteriorly angulate.

Male. Length 3.5–3.7 mm. Head width:head height 1.2; scape pale brown; flagellum length:head height 2.0– 2.1, F2 2.2–2.6× as long as broad. Fore femur mostly brown, tips pale; fore tibia yellow; mid femur mostly dark brown basally, becoming yellow apically; mid tibia yellow; hind femur mostly brown, tips pale. hind tibia yellow. Petiole 7.0–7.6× as long as broad, petiole length:hind coxa length 2.2–2.3.

Distribution. Costa Rica, Guatemala, Honduras, Panama.

Material examined. Holotype: COSTA RICA: Cartago: Monumento Nacional Guayabo, 1100m, 9°58'21"N, 83°41'34"W, xi.1994, G. Fonseca [1 ♀, INBIOCRI02093415], deposited in MUCR . Paratypes: COSTA RICA: Cartago: Campo Escuela Nacional Iztaru , 1800m, 9°53'20"N, 83°58'20"W, 28.ix.1991, J .A. Ugalde [2 ♀, INBIO: INBIOCRI00876618, INBIOCRI00876636]. Dulce Nombre, Vivero Linda Vista, 1300m, vi– viii.1993, Hanson [3 ♀, MUCR: UCRCENT00479323, UCRCENT00479325, UCRCENT00479330]. Dulce Nombre, Vivero Linda Vista, 1300m, viii–x.1993, P. Hanson [3 ♀, MUCR: UCRCENT00479326–28]. Dulce Nombre, Vivero Linda Vista, 300m, viii–ix.1999, P. Hanson [1 ♀, MUCR: UCRCENT00479320]. Monumento Nacional Guayabo, 1100m, 9°58'21"N, 83°41'34"W, xi.1994, G. Fonseca [6 ♀, INBIO: INBIOCRI02093376, INBIOCRI02093401, INBIOCRI02093444, INBIOCRI02093453, INBIOCRI02093478, INBIOCRI02093515]. Monumento Nacional Guayabo, A.C.A.C. Amistad, 1100m, 9°58'21"N, 83°41'34"W, vi.1994, G. Fonseca [7 ♀, INBIO: INBIOCRI01881684, INBIOCRI01881711, INBIOCRI01881770, INBIOCRI01881771, INBIOCRI01881900, INBIOCRI01882037, INBIOCRI01882053]. Monumento Nacional Guayabo, A.C.A.C. Amistad, 1100m, 9°58'21"N, 83°41'34"W, vii.1994, G. Fonseca [3 ♀, INBIO: INBIOCRI01888930, INBIOCRI01889002, INBIOCRI01889162]. Monumento Nacional Guayabo, Turrialba, 1100m, 9°58'14"N, 83°41'24"W, ix.1994, G. Fonseca [21 ♀, INBIO: INBIOCRI02039320 , INBIOCRI02039326, INBIOCRI 0 2039330, INBIOCRI02039332, INBIOCRI02039348–49, INBIOCRI02039379–80, INBIOCRI02039492, INBI OCRI02039515 , INBIOCRI02039550, INBIOCRI02039557–58, INBIOCRI02039560–61, INBIOCRI02039591, INBIOCRI02039608, INBIOCRI02039611, INBIOCRI02039625, INBIOCRI02039645, INBIOCRI02039757]. La Unión, Café, Finca André, Tres Ríos de Cartago, 9°54'00"N, 83°59'23"W , 2.vii.1973, D.J. Calvert & I. Jolis [2 ♀, USNM: UCRCENT00237538–39 ]. Guanacaste: Est. Cacao, Lado SO Vol. Cacao, P.N.G., 1000–1400m, 10°55'42"N, 85°28'06"W , v–vi.1991, Tp malaise [1 ♀, INBIO: INBIOCRI00634862]. Est. Cacao, Lado SO Vol. Cacao, P.N.G., 1000–1400m, 10°55'42"N, 85°28'06"W, vii.1991, C. Chaves [1 ♀, INBIO: INBIOCRI00323190]. Est. Cacao, Lado suroeste del Volcan Cacao, 1000–1400m, 10°55'42"N, 85°28'06"W, ii–iii.1989, PNG Inventario de Biod. [1 ♀, INBIO: INBIOCRI00290512 ]. Est. Cacao, Lado suroeste del Volcan Cacao, 1000–1400m, 10°55'42"N, 85°28'06"W , vi.1990, I curso Parataxon. [10 ♀, INBIO: INBIOCRI00224643, INBIOCRI00224745, INBIOCRI00224747–48, INBIOCRI00224752–53, INBIOCRI00224755, INBIOCRI00224761, INBIOCRI00224763, INBIOCRI00252641]. Est. Cacao, Send. a la Cima. 2 km SW del Cerro Cacao, 1500m, 10°55'59"N, 85°28'03"W, iii.1996, C. Moraga, Sombrereta [1 ♀, INBIO: INBIOCRI02473632]. Est. Cacao, SW side Volcan Cacao, 1000–1400m, 10°55'42"N, 85°28'06"W, iii.1990, GNP Biod. Sur. [5 ♀, INBIO: INBIOCRI00165685, INBIOCRI00165693, INBIOCRI00165714, INBIOCRI00165716–17]. Est. Cacao, SW side Volcan Cacao, 1000–1400m, 10°55'42"N, 85°28'06"W, xi–xii.1989, URCG R. Blanco & C. Chaves [16 ♀, INBIO: INBIOCRI00144443 , INBIOCRI00148517, INBIOCRI00148561–65, INBIO: INBIOCRI00148568 , INBIOCRI00148570–71, INBIOCRI00148573, INBIOCRI00148599, INBIOCRI00148603, INBIOCRI00148637, INBIOCRI00148639, INBIOCRI00148842]. Est. Pitilla, 9 km S Santa Cecilia , P.N. Guanacaste, 700m, 10°59'28"N, 85°25'39"W , 31.iii–15.iv.1992, C. Moraga [1 ♀, INBIO: INBIOCRI00416160]. Estac. Mengo, SW Volcan Cacao, 10°55'36"N, 85°28'06"W, ix–x.1989 [1 ♀, UCRC: UCRCENT00413248]. Estac. Mengo, SW Volcan Cacao, 1100m, 10°55'36"N, 85°28'06"W, ix–x.1989 [2 ♀, UCRC: UCRCENT00479156–57]. Guanacaste N.P., Pitilla Biological Station , 10°59'31"N, 85°28'20"W , 1.ii.1995, L. Masner, screen sweep [8 ♀, UCRC: UCRCENT00312149–55, UCRCENT00312157]. Macizo Miravalles, Estación Cabro Muco, 1100m, 10°43'00"N, 85°08'34"W, 15.iii–2.iv.2003, J. Azofeifa, sweep [1 ♀, INBIO: INB03710916 ]. P.N. Santa Rosa, Rio Calera , Est. Santa Rosa, 0–100m, 10°48'11"N, 85°40'27"W, 21.vii.2000, D. Briceno [1 ♀, UCRC: UCRCENT00479158 ] . Sector Las Pailas , Sendero Volcan, P.N. Rincon de la Vieja, 800m, 10°46'31"N, 85°20'59"W, 28.xi.1993 – 5.i.1994, E. Araya, malaise trap [1 ♀, INBIO: INBIOCRI01981909]. Vn Cacao (ACG), 1659m, 13.ii.1995, J. Whitfield [1 ♀, BMNH: UCRCENT00309943]. Volca Cacao, Arenales, W side, 900m, 10°56'03"N, 85°27'22"W, 1988–1989 [1 ♀, UCRC: UCRCENT00413504]. Heredia: 10 km N San Jose , 10°02'28"N, 84°07'52"W, vii.1971, J . Maldonado C. [2 ♀, USNM: UCRCENT00416817–18 ] . San Jose, 1100–1200m, 9°56'00"N, 84°05'00"W, viii.1980, N.L.H. Krauss [3 ♀, AMNH: UCRCENT00424174–76 ] . Santo Domingo, 1200m, 9°58'48"N, 84°05'24"W , 26.iv.2016, P. Hanson, YPT [3 ♀, UCRC: UCRCENT00479159 (D4700), UCRCENT00479160 (D4702), UCRCENT00479161 (D4701)]. Santo Domingo, 1200m, i–ii.2013, P. Hanson [1 ♀, MUCR: UCRCENT00479329 ] . Santo Domingo, INBio Cafetal , 1100m, 9°58'48"N, 84°05'24"W , 25–28.vi.1997, S. & J. Peck, FIT [1 ♀, CNC: UCRCENT00425818 (D4644)]. Limón: Esc Agricultura, 10°12'56"N, 83°35'30"W , 10.viii.1972, J. Maldonado C. [1 ♀, USNM: UCRCENT00416819]. Puntarenas: Est. Altamira , Buenos Aires, 1430m, 9°01'53"N, 83°00'32"W , 15.ix–14.x.1993, R. Delgado [3 ♀, INBIO: INBIOCRI01620784, INBIOCRI01620807, INBIOCRI01620860]. San Jose: San Antonio de Escazu, Eberhard property, 1300m, 9°53'49"N, 84°08'15"W, 4–5.iii.1996, L. Masner, creekbed, Yellow Pan Trap [1 ♀, CNC: UCRCENT00425961 ] . San Gerardo, 11.ix.1986, L. Masner [1 ♀, CNC: UCRCENT00425960 ]. GUATEMALA: Huehuetenango: Todos Santos, 2500m, 15°30'14"N, 91°36'04"W , 30.viii.1987, M. Sharkey [1♂, CNC: UCRCENT00425820 ]. HONDURAS: Yoro : Atlantida, 100m, 15°40'11"N, 87°08'32"W, 12.ix.1972, J. Helava [1 ♀, CNC: UCRCENT00247569 ] . PANAMA: Chiriqui: 5 km. NE Santa Clara, 1500m, 8°51'52"N, 82°43'44"W, 6.vii.1996, Gillogly and Schaffner [3 ♀, TAMU: UCRCENT00426525– 27 ]. Reserva La Fortuna Estacion Biologica , 1150m, 8°44'03"N, 82°14'28"W, 11–13.vii.1996, A.R. Gillogly [4 ♀, TAMU: UCRCENT00426529–32 ]. Lagunas del Volcan, 5 km SW Volcan , 1286m, 8°45'52"N, 82°40'33"W , 30.vii.1999, J.B. Woolley [1 ♀, TAMU: UCRCENT00426536 ]. Coclé : El Valle, 8°34'48"N, 80°10'12"W , xi.1946, N.L.H. Krauss [2 ♀, USNM: UCRCENT00248644–45 ]. Ngäbe-Buglé Comarca: 3 km W Fortuna Hwy, Oleoducto Rd , 1170m, 8°47'07"N, 82°12'05"W , 6–9.i.2001, M. Yoder & J.B. Woolley [1 ♀, TAMU: UCRCENT00400702].

Etymology. The Mangue word for “red,” referring to the large reddish area on the mesoscutal midlobe (see Fig. 14 and color section in description above).

Figures

FIGURES 11–16. Orasema arimbome. ♀: 11. Habitus (holotype). 12. Head, cly = clypeus, scly = supraclypeal area. 13. Antenna (holotype), with F2 and F6–F7 inset, F1 = anellus, F2–F8 = funiculars, ped = pedicel, scp = scape. 14. Mesosoma (holotype), dorsal view, ax = axilla, llm = mesoscutal lateral lobe, mlm = mesoscutal midlobe. 15. Oblique view of mesoscutellum, axl = axillula, frn = frenum, scd = mesoscutellar disc. 16. Stigma and postmarginal vein, pmv = postmarginal vein, stv = stigma vein, cc = costal cell.

FIGURES 17–18. Orasema arimbome. ♀: 17. Propodeum, cal = propodeal callus, mtn = metanotum, ppd = propodeum. 18. Petiole (pet), ptc = anterior petiolar carina.

FIGURES 155–162. Orasema pirca. ♀: 155. Habitus. 156. Head. 157. Antenna, with F2 and F6–F7 inset. 158. Mesosoma, dorsal view.159. Axillula.160. Stigma and postmarginal vein (holotype).