Dirrhinodryinus lamellatus ( Olmi, 1984 ) Martins & Melo, 2024

Martins, André L. & Melo, Gabriel A. R., 2024, Phylogenetic analysis of Neotropical Dryinus using morphological characters: new proposed classification for species groups and description of a new genus (Hymenoptera: Dryinidae), Zoological Journal of the Linnean Society 202 (3), pp. 1-23 : 11

Dirrhinodryinus lamellatus ( Olmi, 1984) comb. nov.

( Figs 3B, D, F , 5 , 7C, D )

Alphadryinus lamellatus Olmi, 1984: 986 .

Female holotype. Brazil, Santa Catarina, Seara, Nova Teutônia ( NHMUK, examined through photographs) .

Diagnosis: Body predominantly black and testaceous, except flagellomeres 2–4 yellow testaceous, femur and tibia brown; forewings with two dark transverse bands. Body with short pilosity, except head with comparatively denser and erect pilosity; pronotum with dense and short pilosity; mesoscutum and mesoscutellum with sparse and short pilosity; metanotum with short pilosity, except by central surface with long pilosity. Head and pronotum, mesopleuron and metapleuron rugose; mesoscutum rugose and punctate; mesoscutellum smooth and punctate; metanotum rugose; propodeum reticulate rugose. Occipital carina complete; frontal line incomplete. Rhinaria on flagellomere 8 with two sets of separate grooves; apical margin of clypeus convex. Stigmal vein of forewing with 2r-rs shorter than 3Rs&4Rs. Enlarged claw without subapical tooth, with one row of four bristles and a long lamella.

Redescription: Female. Body length: 4.0mm. Colour: Head black ( Fig. 5B, C ), except part of face red testaceous ( Fig. 5B ); palpomeres testaceous; mandible testaceous, except teeth darkened ( Fig. 5B ); clypeus brown testaceous; antenna with scape, pedicel and 1st flagellomere testaceous, flagellomeres 2–4 yellow testaceous and 5–8 black; pronotum partially black and brown testaceous on disc and posterior and lateral surface ( Fig. 5D ); mesosoma predominantly black ( Fig. 5E ), except anterior surface of mesopleuron, and suture between mesopleuron and metapleuron testaceous; legs testaceous ( Fig. 5A ), except femur and tibia brown; tegula brown testaceous; forewings with two dark transverse bands; metasoma brown testaceous. Pubescence: Head mostly with dense, short, and erect pilosity ( Fig. 5B, C ); clypeus glabrous ( Fig. 5B ); eye with dense and short pilosity; mesosoma mostly with short, erect pilosity; denser on pronotum, sparser on mesoscutum and mesoscutellum; central portion of metanotum with long pilosity ( Fig. 5D ); metasoma with short and sparse pilosity. Integumental sculpture: Head rugose ( Fig. 5B, C ), including gena and clypeus; pronotum rugose ( Fig. 5D ), except by several longitudinal carinae at lateral margin in the transversal impression; mesoscutum rugose and punctate ( Fig. 5D ); mesoscutellum and central portion of metanotum smooth, except for piligerous punctures ( Fig. 5D ), lateral portions of metanotum rugose; mesopleuron and metapleuron rugose ( Fig. 5E ); propodeum reticulate rugose, its posterior surface with two longitudinal carinae laterally ( Fig. 5F ), their anterior ends connected by a transverse carina. Structure and proportions: Occipital carina complete ( Fig. 5C ). Ocellar ratio: OL = 7; POL = 11; OPL = 9; OOL = 23. Frontal line incomplete, restricted to middle of frons ( Fig. 5B, C ). Antennomeres in the following proportions: 33: 17: 57: 30: 24: 20: 20: 18: 18: 23; 8th flagellomere with two separate sets of rhinaria at the base and a single set apically; apical margin of clypeus convex. Notauli percurrent, strongly converging posteriorly ( Figs 5D , 3F ); metanotum flat; stigmal vein of forewing with 2r-rs shorter than 3Rs&4Rs (36: 50). Enlarged claw without subapical tooth, with one row of four bristles and a long lamella ( Fig. 3B ). Protarsomeres in the following proportions: 50: 9: 13: 54: 73, and enlarged claw (66). Tibial spur formula 1/0/2. Propodeum with dorsal surface longer than posterior (60: 45).

Male: Unknown.

Examined material: One female: Brasil, PR, S.J. Pinhais \ UEH Guaricana , 760 m,\ 25.717°S 48.964°W \ 26.xii.2017 – 09.i.2018,\ G. Melo and R. Cavichioli\Armadilha Malaise (DZUP).

Remarks: This species was originally described in Alphadryinus by Olmi (1984). In Xu et al. (2013), Alphadryinus was sunk under Dryinus , therefore implying that all included species were also transferred. In their treatment of the Neotropical fauna, Olmi and Virla (2014) formally presented its combination in Dryinus . Dirrhinodryinus lamellatus comb. nov. resembles D. caraibicus comb. nov. by the characteristics presented in the description of the genus but differs by frontal line incomplete; eye with dense short pilosity; occipital carina complete; mandible base longer than malar space; antenna with 1st flagellomere 1.9× longer than 2nd flagellomere; enlarged claw without subapical tooth, with one row of four bristles and one long subapical lamella; mesotibial spur absent; posterior surface of propodeum with two longitudinal carinae laterally, their anterior ends connected by a transverse carina.

Figures

Figure 3. Electromicrography of Dirrhinodryinus species. A, chela of D.caraibicus; B, chela of D.lamellatus; C, middle leg of D. caraibicus; D, middle leg of D.lamellatus; E, mesosoma of D. caraibicus, dorsal view; F, mesosoma of D. lamellatus, dorsal view. Scale bar. A, B, E, and F 200 µm; C and D, 100 µm.

Figure 5. Dirrhinodryinus lamellatus (Olmi, 1984) comb. nov.. A, habitus, lateral view; B, head, frontal view; C, head, dorsal view; D, mesosoma, dorsal view; E, mesosoma, lateral view; F, propodeum, posterior view. Scale bar: A, 1.0 mm; B, C, 1.0 mm; D, E, 1.0 mm; F, 0.5 mm.

Figure 7. Type species of Dirrhinodryinus. A, habitus of D.caraibicus& lateral view; B, labels of D. caraibicus; C, habitus of D. lamellatus, lateral view; D, labels of D. lamellatus. Scale bar.C, 1 mm.