Orasema tapi 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 : 93-95

Orasema tapi Burks, Heraty & Dominguez n. sp.

urn:lsid:zoobank.org:act:23165EF2-52BC-4DDD-8772-B70FDB32CD27 ( Figs 225–234 )

Diagnosis. F2 longer than F3. Pedicel and flagellum yellowish-brown. Mesoscutal midlobe and mesoscutellum, including axillula, areolate to areolate-reticulate. Mesoscutal midlobe without reddish or yellowish area. Mesoscutellar disc areolate-reticulate, not more than 1.1× as long as broad.

This species differs from others having an areolate-reticulate axillula in that the antennal flagellum is pale ( Fig. 227 ) and the mesoscutal midlobe lacks a reddish or yellowish area ( Fig. 228 ).

Description. Female. Length 2.2–3.0 mm.

Color: Head and mesosoma blue to green with purple area posterolaterally. Pedicel pale brown; anellus pale brown; flagellum brown. Coxae blue green to purple basally, yellow apically; fore femur brownish or yellow, legs beyond coxae otherwise yellow. Fore wing hyaline; venation pale brown. Petiole blue to green; gaster brown with blue to purple luster.

Head: Head width:head height 1.2; face reticulate; longitudinal groove between eye and torulus present as a vague reticulate depression; eyes bare, inter-ocular distance:eye height 1.4; malar space:eye height 0.6–0.7; supraclypeal area longer than broad, smooth medially and ventrally, weakly sculptured dorsally and laterally; clypeus smooth. Flagellum length:head height 1.5–1.6; F2 2.8–3.5× as long as broad, 1.2–1.3× as long as F3; following funiculars progressively shorter and broader.

Mesosoma: Mesosoma length:height 1.3. Mesoscutal midlobe mostly areolate-reticulate anteriorly to areolate posteromedially, with minute setae; lateral lobe areolate-reticulate. Axilla areolate-reticulate; mesoscutellar disc areolate-reticulate, with coarser area posteromedially, about as long as broad; frenal line irregularly foveate; frenum areolate; axillular groove weak and foveate; axillula areolate-reticulate with longitudinal carinae. Propodeum with irregular, posteriorly incomplete median carina; propodeal disc areolate medially to areolatereticulate laterally; callus areolate-reticulate, with 3–5 setae. Mesepisternum areolate-reticulate laterally, smooth ventrally, broadly rounded anterior to mid coxa. Upper mesepimeron smooth; lower mesepimeron areolatereticulate; transepimeral sulcus distinct. Metepisternum laterally reticulate to areolate-reticulate. Hind coxa 2.1– 2.2× as long as broad; hind femur 6.7–6.9× as long as broad. Fore wing 2.6–2.7× as long as broad, 3.1–3.4× as long as mesothorax; stigma with 4 sensilla separated into pairs. Hind wing costal cell with a broad bare area.

Metasoma: Petiole 2.5–3.1× as long as broad, 1.0–1.2× as long as hind coxa, areolate to areolate-reticulate, anterior carina moderate. Antecostal sulcus irregularly sculptured; acrosternite posteriorly angulate.

Male. Length 2.4 mm. Head width:head height 1.2; scape yellow; flagellum length:head height 1.8, F2 3.0× as long as broad. Fore femur yellow; fore tibia yellow; mid femur yellow; mid tibia yellow; hind femur yellow. Hind tibia yellow. Petiole 7.8× as long as broad, petiole length:hind coxa length 2.1.

Distribution. Brazil.

Material examined. Holotype: BRAZIL: Espírito Santo: São R. do Canaã, Allo Misterioso, 19°48'12.2"S, 40°46'08.7"W, 2–11.xi.2007, C. Waichert et al., Malaise P 18 [1 ♀, UFES00108616 ], deposited in UFES . Paratypes: BRAZIL: Espírito Santo: Dom. Martis, Mata Pico do Eldorado , 20°22'17"S, 40°39'29"W, 3– 10.xii.2004, M.T. Tavares et al., Malaise T 7 [1 ♀, UFES: UFES00064962 ] . Dom. Martis, Mata Pico do Eldorado , 20°22'17"S, 40°39'29"W, 3–10.xii.2004, M.T. Tavares et al., Malaise B 4 [1 ♀, UFES: UFES00107998 ] . Dom. Martis, Mata Pico do Eldorado , 20°22'17"S, 40°39'29"W, 3–10.xii.2004, M.T. Tavares et al., Malaise B 2 [1 ♀, UFES: UFES00104750 ] . São R. do Canaã, Alto Misterioso, 19°48'12.2"S, 40°46'08.7"W, 2–11.xi.2007, C. Waichert et al., Malaise P 15 [1 ♀, UFES: UFES00100946 ] . Mato Grosso: Sinop , 11°52'00"S, 55°29'00"w, ii.1956, O Rappa, sweep [1 ♀, CNC: UCRCENT00240928 ] . Sinop , 11°52'00"S, 55°29'00"w, ii.1956, O Rappa, sweep [1 ♀, CNC: UCRCENT00425717 ] . Rio de Janeiro: Ilha Jaguanum , 22°59'57"S, 43°55'44"W, 10.ix.1982, D. Hunt [1 ♀, UCDC: UCRCENT00478025 ] . São Paulo: Am. Brasiliense Cerradão Clube Náutico Arm. Moericke-ponto 3Q, 21°42'00"S, 48°01'00"W, 26–28.iv.1999, M.T. Tavares et al. [1 ♀, UFES: UFES00002693 ] .

Etymology. The Tupinambá word for “thin,” referring to the antenna.

Figures

FIGURES 225–230. Orasema tapi. ♀: 225. Habitus. 226. Head. 227. Antenna, with F2 plus pedicel, and F6–F7 inset. 228. Mesosoma, dorsal view. 229. Axillula. 230. Stigma and postmarginal vein.

FIGURES 231–234. Orasema tapi. ♀: 231. Propodeum. 232. Petiole, hind coxa. ♂: 233. Antenna, with F2 and F6–F7 inset. 234.Petiole, hind coxa.