Oenrobia kinabaluensis Hayat, 1995

Oenrobia kinabaluensis Hayat View in CoL

( Figure 6 View Figure 6 )

Oenrobia kinabaluensis Hayat, 1995: 51–54 View in CoL . Type data: MALAYSIA: Sabah: Mt. Kinabalu NP Hqt. Liwagu R., 149 m, 6°00 ʹ 21”N, 116°32 ʹ 35”E, 23.v.1987, Smetana, A. Holotype, ♀. Type depository: CNC: CNC22192 View Materials [examined]. GoogleMaps

Diagnosis

Antenna with scape laterally flattened and expanded ventrally; multiporous plate sensilla (ts) trichoid rather than fused with flagellar segments along their length ( Figure 6A View Figure 6 ). Vertex with postocellar lines (pol) present ( Figure 6B View Figure 6 ). Mesosoma with axilla (ax) with 2 setae; mesoscutellum (mss) with medial longitudinal groove, scutellar sensilla (ss) separated by one diameter; metanotum with triangular dorsellum (dor) ( Figure 6C View Figure 6 ). Fore wing infuscate posterior to marginal vein; stigmal vein short ( Figure 6D View Figure 6 ). Third valvulae (3vl) enlarged and strongly triangular ( Figure 6F View Figure 6 ).

Redescription

Female. Colour. The holotype ( Figure 6 View Figure 6 ) is cleared and slide-mounted, and as a result the body colour could not be reassessed. See Hayat (1995) for a discussion of body colour.

Antenna 8-segmented with all segments densely setose, antennal formula 1,1,3,3; scape laterally compressed and ventrally expanded, twice as long as wide, densely setose dorsally; pedicel shorter than Fu1, Fu1 2.9× as long as wide, 1.1× as long as both Fu2 and Fu3; all flagellar segments with multiporous plate sensilla (ts) trichoid rather than fused along their length; funicle with mushroom-like sensilla ( Figure 6A View Figure 6 ). Head with frontovertex setose; postocellar (pos), transfacial, and mediofrontal lines; scrobal depression with two lines of setae; eyes setose; mandibles with 2 teeth and a truncation; maxillary palp 2-segmented ( Figure 6B View Figure 6 ). Mesosoma with pronotum (no1) entire; mid lobe of mesoscutum (mlm) with ~45 setae, sculpture reticulate; side lobes of mesoscutum with 3 setae, lacking sculpture; axilla (ax) subquadrate with 2 setae, sculpture reticulate; mesoscutellum (mss) with 3 pairs of setae, longitudinal grove medially, lacking sculpture, scutellar sensilla (ss) separated by the diameter of one sensillum; metanotum with triangular dorsellum (dor). Fore wing apically rounded, 2.0× as long as width, with disc setae longer at near base than apex; wing fringe 0.1× as long as width of fore wing; submarginal vein subequal in length to marginal vein; stigmal vein short, adjacent to asetose patch on the wing disc; postmarginal vein extremely reduced ( Figure 6D View Figure 6 ). Tarsal formula 5-5-5; mid tibia with spur subequal in length to mid basitarsus ( Figure 6E View Figure 6 ). Petiole transverse, with indistinct sculpture. Gaster 7-segmented laterally with imbricate sculpture; Gt1–2 0, Gt3–7 with 1+1, 1+1, 2+2, 2+2, 2+2, and 4 setae, respectively. Ovipositor subequal in length to mid tibia. Third valvulae (3vl) enlarged and kite shaped, 0.5× as long as the second valvula ( Figure 6F View Figure 6 ).

Male. Unknown.

Material examined

Holotype: See above. Non-type material: MALAYSIA: Sarawak: Borneo, Gunung Mulu National Park , Summit trail, vic . Paku Waterfall in forest, 4°2.27 ʹ N, 114°49.7 ʹ W 42 m, 16 GoogleMaps . ix.2011, Polaszek, A., Darling, D.C., Talamas, E., and Johnson, N.F. [2♀, ROME: OSU308696 View Materials ] GoogleMaps .

Comments

Oenrobia was established for a single species ( Oenrobia kinabaluensis ) considered intermediate between Coccophagus and Encarsia , with Hayat (1995) stating that it shares many diagnostic characteristics with the former, except for sharing the facial lines, postocellar lines and general habitus of the latter ( Figure 6B View Figure 6 ). Oenrobia was further distinguished by a longitudinal groove on the mesoscutellum ( Figure 6C View Figure 6 ) and trichoid longitudinal sensilla on the flagellum ( Figure 6A View Figure 6 ). Hayat (1995) describes the ovipositor as ‘connected to the last tergum through a thin band-like extension’; however, this structure is not clearly illustrated nor identifiable on the type specimen. It is clear from an examination of the type material that this species is very close to Prococcophagus , sharing many diagnostic characteristics, including an expanded and laterally flattened scape, postocellar lines, conformation of the mesonotal sclerites, and an infuscate fore wing base ( Figure 6D View Figure 6 ) ( Hayat 1998; Wang et al. 2020; Qin et al. 2022). However, Oenrobia possesses several unique synapomorphies that help to distinguish it from Prococcophagus , including a relatively short stigmal vein, an undivided pronotum, a longitudinal groove on the mesoscutellum, a triangular dorsellum, and strongly enlarged triangular third valvulae ( Figure 6C,D,F View Figure 6 ). Additional material should be collected from the type location, and molecular data captured, to definitively establish the placement of Oenrobia outside Prococcophagus or, alternatively, as a highly apomorphic species within Prococcophagus .