Incertosulcus pinotnoir Barbosa & Azevedo, 2020

Barbosa, Diego N. & Azevedo, Celso O., 2020, Synopsis of Incertosulcus Móczár, 1970 (Hymenoptera: Bethylidae), Journal of Natural History 54 (21 - 22), pp. 1363-1393 : 1370-1371

publication ID 10.1080/00222933.2020.1794073

publication LSID


persistent identifier

treatment provided by


scientific name

Incertosulcus pinotnoir Barbosa & Azevedo

sp. nov.

Incertosulcus pinotnoir Barbosa & Azevedo sp. nov.

( Figures 1 View Figure 1 (b), 6(c,d), 9(a,b))

Material examined

Holotype. ♂ South Africa, Natal, S [ain]t Lucia Estuary , 1–14.i.1978, M[alaise] T[rap], n. J. Brothers (PMAE).

Paratypes. ♂ South Africa, Transvaal , Kruger, N .P., Skukuza, S. & J. Peck, 12–15 .xii .1985 , thorn scrub forest (PMAE); ♂ Satara , black M[alaise] T[rap], 16–18 .xii .1985, M. Sanborne (UFES); ♂ E[astern] Cape, Februarie Farm (39.9 km 268°W Kirkwood), 33°32.813’S 25° 03.091 ʹ E, 8 Feb [ruary] 2001, S GoogleMaps . van Noort, Sweep, VB 01-R2 N-S18, Valley Bushveld (nontrashed) (SAM-HYM P0024807) .


Male. Body length 4.5 mm. Forewing 2.7 mm. Head: head as long as wide. Malar space shorter than VOL, convergent anteriorly. Mandible with three sharpened apical teeth. Median clypeal lobe rounded; lateral lobe short; median clypeal carina arched, complete, straight in dorsal view. Antenna long [surpassing the mesoscutum]; scape slightly curved; pedicel fusiform; flagellomere I longer than pedicel; flagellomeres long. Eye small [0.5 x LH], circular. Frons strongly foveolate. Frontal angle of ocellar triangle obtuse; ocelli small, DAO 1.0 × POL; ocellar fovea present. Dorsal half of occipital carina high, with side strigate; ventral half of occipital carina complete, high, with side strigate. Mesosoma: dorsal pronotal area shorter than wide, foveolate, anterior margin outcurved, anterior corner angled, trapezoidal, lateral margin slightly incurved, posterior margin incurved; longitudinal pronotal sulcus complete. Anteromesoscutum weakly foveolate, longer than mesoscutellum; longitudinal antero-mesoscutal sulcus complete, with anterior half with median carina; notaulus deep, wide, polished; parapsidal signum shallow. Axilla polished, deep. Mesoscutum-mesoscutellar sulcus arched, not laterally dilated; mesoscutellum medium, foveolate. Metapectal-propodeal complex 0.5 × as long as wide; metapostnotum with a longitudinal ridge between metaposnotal median carina and metaposnotal-propodeal suture; metapostnotal surface areolate; metapostnotal median carina complete; posterior projection of metapectal-propodeal complex long, narrow. Propodeal declivity areolate, with median and lateral carinae. Lateral surface of metapectal-propodeal complex areolate, with subdorsal and vertical carinae. Mesopleuron foveolate; posterior oblique sulcus foveolate; mesopleural suture with inner margin foveolate. Wings: macropterous; transverse median vein bi-angulate; stigma sub-developed, distal margin outcurved. Metasoma: tergum I with ventral surface areolate, with lateral pilosity; tergum II with dorsal surface punctured, with lateral pilosity, ventral surface punctured. Hypopygium with speculum long, acute. Genitalia: paramere apex densely setose; ventral arm of paramere short, club-shaped; dorsal arm of paramere as long as ventral arm, filamentary. Cuspis ventral arm aligned with dorsal arm apex, slender; dorsal arm wide. Aedeagus wide, with apex not reaching paramere apex, apical margin angled, and apical sickle process long and curved, lateral of margin of basal portion outcurved.

Colouration. Wings: bi-banded; orange: pronotum and mesonotum; castaneous: mandible, palpi, wing venation, and tarsi; dark castaneous: scape, pedicel, flagellum, tegula, coxae, trochanters, femora, tibiae, and metasoma; dark castaneous nearly black: head and metapectal-propodeal complex.


This new species is similar to I. saintjohni ( Móczár, 1977) comb. nov. in having the head and metapectal-propodeal complex dark castaneous nearly black and pronotum and mesonotum orange, head as long as wide, eye small, posterior projection of metapectal-propodeal complex long, and lateral surface of metapectal-propodeal complex areolate, with metapectal posterior carinae. However, both species have their singularities, I. pinotnoir sp. nov. is distinguished from I. saintjohni by having the antenna dark castaneous with pedicel fusiform, median clypeal lobe rounded, longitudinal sulcus of anteromesoscutum complete, aedeagus with sickle process long. Additionally, I. pinotnoir sp. nov. has a distinct characteristic, anterior half of longitudinal sulcus of anteromesoscutum with median carina, a condition not recorded before to Mesitiinae .