Orasema psarops, Baker & Heraty, 2020

Baker, Austin J. & Heraty, John M., 2020, The New World ant parasitoid genus Orasema (Hymenoptera: Eucharitidae), Zootaxa 4888 (1), pp. 1-84 : 78-80

publication ID

https://doi.org/ 10.11646/zootaxa.4888.1.1

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scientific name

Orasema psarops

sp. nov.

Orasema psarops n. sp.


( Fig. 43 View FIGURE 43 )

Diagnosis. Distinguished from other Orasema by the following combination of characters: antenna with 8 funiculars ( Fig. 43D View FIGURE 43 ), labrum with 4 digits ( Fig. 43B View FIGURE 43 ), dorsal mesosoma entirely rugose-reticulate ( Fig. 43F View FIGURE 43 ), legs beyond coxae entirely yellow ( Fig. 43A View FIGURE 43 ), body size large (females 4.2–4.6 mm), basal third of fore wing entirely bare except

for a single posterior line of setae, stigmal vein angled toward wing base ( Fig. 43A View FIGURE 43 inset), and lower face with scattered minute punctures ( Fig. 43B View FIGURE 43 ).

Description. Female. Length 4.2–4.6 mm ( Fig. 43A View FIGURE 43 ). Color. Head and mesosoma iridescent green-blue. Scape yellow; pedicel brown; anellus yellow; flagellum dark brown. Mandible yellow with teeth black at apex; maxilla and labium yellow. Coxae dark brown with green iridescence; femora and tibiae yellow ( Fig. 43E View FIGURE 43 ). Fore wing hyaline; venation brown. Petiole same as mesosoma; gaster dark brown with iridescence. Head ( Fig. 43B View FIGURE 43 ). Head in frontal view subtriangular; HW:HH = 1.2–1.3; face reticulate with small scattered impressions; scrobal depression shallow, laterally rounded, with transverse striae; dorsal scrobal depressions absent; longitudinal groove between eye and torulus absent; eyes sparsely setose, IOD:EH = 1.6–1.7; MS:EH = 0.8–1.0; malar depression weakly impressed adjacent to mouth; supraclypeal area longer than broad, shorter than clypeus, weakly reticulate; clypeus smooth; epistomal sulcus distinct and sharply defined; anterior tentorial pit strongly impressed; anteclypeus distinct, broadly rounded. Labrum with 4 digits. Mandibular formula 3:2; palpal formula 3:3. Occiput imbricate, emarginate in dorsal view, dorsal margin evenly rounded; temples present, rounded. Scape not reaching median ocellus. Pedicel small and globose. Flagellum with 8 funiculars; FL:HH = 1.2–1.3; anellus disc-shaped; F2L:F2W = 1.2–1.3, F2L:F3L = 0.8–1.0; following funiculars subequal in width, successively shorter; clava subconical ( Fig. 43D View FIGURE 43 ). Mesosoma ( Fig. 43C, F View FIGURE 43 ). ML:MH = 1.1–1.3. Mesoscutal midlobe rugose-reticulate, sparsely setose; lateral lobe rugose-reticulate; notauli deep. Axilla rugose-reticulate, dorsally flat, on same plane as mesoscutellum; scutoscutellar sulcus broad, irregularly foveate, broadly separated from transscutal articulation; mesoscutellar disc as long as broad, rugose-reticulate; frenal line foveate; frenum areolate-reticulate; axillular sulcus vaguely indicated by carina; axillula areolate-reticulate. Propodeal disc flat, areolate-reticulate, without depression or carina ( Fig. 43G View FIGURE 43 ); callus reticulate, with a few small setae. Propleuron convex, reticulate. Prepectus triangular dorsally, strongly narrowed ventrally, sculpture areolate-reticulate. Mesepisternum strigate-reticulate laterally, areolate-reticulate anteriorly, broadly rounded anterior to mid coxa; postpectal carina weak. Upper mesepimeron smooth; lower mesepimeron rugose-reticulate; transepimeral sulcus distinct. Metepisternum laterally reticulate. HCL:HCW = 1.5, reticulate dorsally, smooth ventrally; HFL:HFW = 5.8–6.3, evenly covered with short, dense setae. FWL:FWW = 2.5–2.8, FWL: ML = 2.5–2.6; basal area and speculum bare, costal cell and wing disc densely setose; marginal fringe minute; submarginal vein with several long setae; marginal vein setose; stigmal vein slightly longer than broad, slightly angled toward base of wing; postmarginal vein longer than stigmal vein. Hind wing costal cell with a few setae apically.

Metasoma. Petiole cylindrical, linear in profile, PTL:PTW = 2.5, PTL:HCL = 1.4, areolate-reticulate, lateral margin rounded, ventral sulcus present with margins broadly separated. Antecostal sulcus foveate; acrosternite posteriorly rounded; apical setae of hypopygium with one pair of setae much longer than the others. Ovipositor not visible.

Male. Unknown.

Hosts. Unknown.

Plant associates. Unknown.

Distribution ( Fig. 38 View FIGURE 38 ). Venezuela: TA. Collected in July (2 specimens).

Material examined. Holotype. VENEZUELA. Tchira : Pregonero, Camp. Siberia, Hospital, 1280m, 8 ° 00’56”N, 71 ° 45’48”W, 10-31.vii.1989, S. & J. Peck [♀, deposited in UCRC: UCRCENT00434755] GoogleMaps . Paratype. VENEZUELA. Tchira: Pregonero, Camp. Siberia, Hospital , 1280m, 8 ° 00’56”N, 71 ° 45’48”W, 10-31.vii.1989, S. & J. Peck [1♀, UCRC: UCRCENT00434753] GoogleMaps .

Etymology. From Greek psaro meaning “speckled” and ops meaning “face in reference to the small punctures scattered across the face.

Discussion. This species has some similarities to another Venezuelan species, O. chunpi Burks, Heraty & Dominguez ( stramineipes species group); however, it is distinctly larger and its antennae do not closely resemble other stramineipes -group species. The large body size and sculpture may suggest and affiliation with the tolteca species group, but it lacks the distinctively broad face, dark femora, and bare anterior edge of the fore wing costal cell.













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