Ophrynopus savinai Vilhelmsen, 2020

Vilhelmsen, Lars, 2020, Two new species of Ophrynopus Konow, 1897 (Hymenoptera: Orussidae), with a new definition of the genus, Zootaxa 4790 (1), pp. 121-137 : 130-132

Ophrynopus savinai Vilhelmsen , n. sp.

Fig. 6 .

http://zoobank.org/act: D44B94EA-217B-490B-A368-A315FC4647EB

Material. FRENCH GUIANA: Holotype, female, ” Guyane Française / Saül /belvédère/ 29.IX.2010 /leg. SEAG / Coll. H.Savina ” [large printed green label]; “guy.2010.053” [small printed green label]. ( NHMD)

Description, female. Body length 5.0 mm, fore wing length 3.4 mm. Mostly black to dark brown ( Fig. 6A ). Head black, non-metallic; antennomeres 1-5 black to dark brown, distal part of antennomere 6 and all of antennomere 7 creamy white, antennomeres 8-9 dark brown, antennomere 10 light brown ( Fig. 6B, C ); mandibles black, labrum and labiomaxillary complex dark brown. Thorax black; legs black except dark brown fore and mid tarsi. Fore wing with pterostigma and most veins dark brown, except within hyaline areas ( Fig. 6D ); two large infuscate areas with dense setation present, basal area extends from wing base between veins C and M-Cu to just proximally of pterostigma, with posterior extension along vein cu-a, distal area separated from proximal by narrow hyaline band, extends across wing from just proximal to vein 2r-rs to some distance from tip, leaving tip of wing hyaline; hind wing vein R dark brown, venation otherwise mostly faint, single weakly infuscate area extends from R–Rs fork to tip of wing. Abdomen mostly black ( Fig. 6E ) except for dark brown tip of sternum 7 and longitudinal carinae on tergum 9.

Head. Ocellar corona narrow, distance between median ocellus and lateral coronal teeth approximately equal to width of ocellus ( Fig. 6B ); dorsalmost coronal teeth situated dorsal to lateral ocelli in two columns, not separated medially by groove. Dorsal transverse frontal carina indistinct, median longitudinal carina absent, lateral carina at most faint, not extending below mid height of eye. Setation on anterior part of head indistinct, on posterior part most developed posterior to postocular carina, carina extends along entire height of eye. Occipital carina well developed ( Fig. 6C ), occipital concavity absent. Frons areolate, gena areolate anteriorly, tending to striate posteriorly just lateral to occipital carina. Antenna with antennomere 9 swollen subapically ( Fig. 6B,C ), antennomere 10 approximately 2.5× as long as wide.

Thorax. Pronotum with distinct transverse carina anterodorsally, longer laterally than medially in dorsal view ( Fig. 6C ), areolate throughout. Fore femur with distinct carina ventrally ( Fig. 6A ). Mesoscutum short and broad, areolate, longitudinal carina absent, pilosity indistinct; mesoscuto-scutellar sulcus distinct, with deep rectangular pits, axillar flanges distinctly carinate, rectangular; mesoscutellum with indistinct lateral margins, posteriorly parallel with anterior margin of metanotum for some distance. Mesopleuron with distinct mesepisternal carina extending all the way to mesodiscrimen (i.e, continuous medially), areolate dorsally except for small glabrous/imbricate depression with a few large pits posterodorsally, finely punctate ventrally, pilosity indistinct. Metanotum with median and lateral longitudinal carinae well developed. Metepisternum areolate except for small glabrous area posteriorly. Hind coxa with dense pilosity of elongate silvery hairs laterally ( Fig. 6A ); hind femur with small denticles ventrally, but no carina; hind tibia dorsally with pegs in two rows ( Fig. 6A ), outer row with ten pegs, and with longitudinal carina laterally; apical hind tibial spurs of unequal length, the longest more than half apical tibial width. Fore wing with vein cu-a inserting on Cu slightly distally of proximal end of cell M ( Fig. 6D ).

Abdomen. Pilosity indistinct. Tergum 1 areolate, with distinct postspiracular and subspiracular carina laterally, area below subspiracular carina glabrous. Terga 2-8 finely areolate to punctate, longitudinal carina on tergum 2 absent ( Fig. 6E ). Tergum 9 finely areolate punctate anteriorly, coarsely areolate posteriorly, with distinct longitudinal carinae submedially. Abdominal sterna finely areolate punctate.

Male. Unknown.

Etymology. Named in honor of Henri Savina, France, faithful provider of orussid material from French Guiana.

Comments. Ophrynopus savinai is unique among the described members of the ophrynopine clade in having a couple of antennomeres (6-7) colored creamy white; among Orussidae , this is also observed in Orussobaius paniculus Schmidt & Vilhelmsen, 2002 (see Blank & Vilhelmsen 2016, fig. 13A) and in some Orussus spp. (see Vilhelm- sen et al. 2014, 2017). It resembles O. carinatus in having the mesoscutum comparatively short, the axillar flanges being rectangular, and the presence of a well-developed median metanotal carina. In addition to the antennal white marking, O. savinai can be separated from O. carinatus by having the pronotum longer sublaterally than medially and having a sharp, upright transverse pronotal carina rather than an anteriorly projecting swelling as is observed in O. carinatus , and the sculpture on the frons and dorsal part of the thorax more finely areolate.

Figures

FIGURE 6. Ophrynopus savinai n. sp., female holotype (NHMD). A. Habitus, lateral. B. Head, anterior. C. Head and thorax, dorsal. D. Wings. E. Abdomen, dorsal. Blue arrow = ventral carina on fore femur; violet arrows = pegs on hind tibia; yellow arrow = dorsal transverse frontal carina; green arrow = transverse pronotal carina; red arrow = vein cu-a.