Orasema masneri, Heraty & Baker, 2020

Heraty, John M. & Baker, Austin J., 2020, New species of Orasema (Hymenoptera: Eucharitidae) from Central and South America, Journal of Natural History 54 (9), pp. 735-754 : 749-750

publication ID

https://doi.org/ 10.1080/00222933.2020.1747651



persistent identifier


treatment provided by


scientific name

Orasema masneri

sp. nov.

Orasema masneri   sp. nov. (wayqecha species group)

( Figures 2 View Figure 2 , 4f,g View Figure 4 )

http://zoobank.org/ urn:lsid:zoobank.org:act:5FA765F8-FE63-4986-8D949CC086CA957B


Orasema masneri   can be recognised by having the basal area of the fore wing bare, face finely reticulate, clypeus broadly rounded and projecting ventrally without a differentiated anteclypeus, and maculated fore wings. As well, the head and mesosoma are blue green, the scape and legs yellow, and the gaster yellowish brown with dark brown maculations dorsally.

Female. Length 4.19 – 4.31 mm.

Colour: Head and mesosoma blue-green with blue and copper patches, ventral mesosoma dark bluish purple with metallic purple reflections. Scape yellow; pedicel and anellus yellow; flagellum brown. Mandible yellow with brown margins; maxilla and labium yellow. Coxae yellow medially and dark purple-brown laterally, remainder of leg yellow. Fore wing with a distinct infuscate patch posterior to stigmal vein and irregular faint infuscate patches over entire wing; venation yellowish brown. Petiole same as mesosoma; gaster brown, Mt 1 and apical tergites dark brown.

Head in frontal view subtriangular; width 1.2× height; face reticulate; scrobal depression shallow, laterally rounded, reticulate; dorsal scrobal depressions absent; eyes bare, inter-ocular distance 1.8 – 1.9× eye height; malar space 0.8 – 0.9× eye height; supraclypeal area longer than broad, smooth medially; clypeus smooth to weakly sculptured; epistomal sulcus narrow but shallow; anterior tentorial pit shallow; anteclypeus weakly differentiated, clypeal margin broadly rounded. Labrum with 6 digits. Mandibular formula 3:2. Palpal formula 3:3. Occiput aciculate, emarginate in dorsal view, dorsal margin abrupt with sharp dorsal margin. Scape almost reaching median ocellus. Pedicel globose, broader than F1. Flagellum with 8 funiculars; flagellum length 1.7× head height; F2 3.1 – 4.2× as long as broad, 1.2 – 1.4× as long as F3; following funiculars subequal in length, equal in width; clava subcylindrical.

Mesosoma length 1.2 – 1.3× height. Mesoscutal midlobe rugose-reticulate, bare; lateral lobe finely rugose-areolate; notauli deep. Axilla finely rugose-areolate, dorsally rounded, on roughly same plane as scutellum; scutoscutellar sulcus narrow, regularly foveate, reaching transscutal articulation medially; scutellar disc slightly longer than broad, areolate; frenal line irregularly foveate but present; frenum rugose-areolate; axillular sulcus absent to weakly margined; axillula with subparallel longitudinal carinae connected by small perpendicular carinae. Propodeal disc broadly rounded, without depression or carina that is barely visible, rugose-areolate; callus weakly areolate-reticulate, with a few small setae; callar nib absent. Prepectus triangular dorsally, strongly narrowed ventrally, sculpture rugose. Mesepisternum weakly rugose-areolate laterally, smooth ventrally, broadly rounded anterior to mid coxa. Upper mesepimeron smooth with longitudinal costae; lower mesepimeron mostly smooth; transepimeral sulcus distinct. Metepisternum laterally rugose-reticulate. Propleuron convex, weakly reticulate. Postpectal carina weak. Hind coxa 1.5 – 1.8× as long as broad, reticulate dorsally, becoming smooth ventrally; hind femur 6.9 – 10.5× as long as broad, with even cover of long semi-erect setae, basally mostly bare with a few semi-erect setae; hind tibia densely setose. Fore wing 2.8 – 3.4× as long as broad, 3.4 – 3.7× as long as mesothorax; entirely setose, wing disc densely setose, basal area of basal cell bare; marginal fringe relatively long; submarginal vein with dense erect setae in basal half, apical half and marginal vein pilose; stigmal vein 1.5 – 2.0× as long as broad, perpendicular to anterior wing margin; postmarginal vein 4.1 – 4.4× as long as stigmal vein. Hind wing entirely pilose.

Metasoma: Petiole cylindrical, linear in profile, 2.7 – 3.4× as long as broad, 1.4 – 1.6× as long as hind coxa, rugose, anterior carina strong. Antecostal sulcus with shallow sculpture; acrosternite weakly angulate posteriorly. Apical setae of hypopygium with two pairs of short setae on each side of midline. Ovipositor slightly curved cephalad; subapical carina weak; first (ventral) valvula with 5 – 6 strong, widely separated teeth, second (dorsal) valvula with 8 – 10 annuli that are broadly separated dorsally by smooth area.

Male. Unknown.

Holotype: Ecuador: Napo: 5 km S Baeza, 1700 m, 0°29 ʹ 00”S, 77°52 ʹ 00”W, 13.ii.1983, Masner & Sharkey [1♀, UCRCENT00161413 ], deposited in CNC   . Paratypes: same locality and date [1♂ 1♀, CNC: UCRCENT00161415 View Materials , UCRCENT00426113 View Materials ]   .

Etymology. Named after Lubomir Masner of the Canadian National Collection for his unique ability to pass along the enthusiasm for Hymenoptera   and collecting to an entire generation.


Canadian National Collection of Insects, Arachnids, and Nematodes