Metanteon poirieri, Speranza & Olmi & Guglielmino & Capradossi & Contarini, 2019

Speranza, Stefano, Olmi, Massimo, Guglielmino, Adalgisa, Capradossi, Leonardo & Contarini, Mario, 2019, Discovery of the transantarctic distribution of the genus Metanteon Olmi (Hymenoptera: Dryinidae), with description of a new species from New Caledonia, Zootaxa 4695 (2), pp. 189-194 : 190-191

Metanteon poirieri sp. nov.

( Figures 1–4 )

Type material. Holotype: ♀: NEW CALEDONIA: Bopope , Katalupaik, KAT8-MAL-2A, 20.83429S 165.00702E, 783 m, 14–29.X.2017, E. Poirier leg., N° 60912– 2001–2017 /JJC, Expédition La Planète Revisitée, MNHN-PNI, NC-TR2 2037 ( MNHN).

Diagnosis. Fully winged female ( Figs 1, 2 ); palpal formula 6/3; 2r-rs&Rs vein of forewing with distal part much longer than proximal part ( Figs 1, 2 ); protarsus chelate ( Fig. 2 ); chela without rudimentary claw ( Fig. 4 ); enlarged claw without subapical tooth, with inner side provided with one row of six small lamellae ( Fig. 4 ); tibial spurs 1/1/2.

Description of female holotype. Fully winged ( Figs 1, 2 ); length 3.9 mm. Head black, except mandible brown; antenna brown, except ventral side of scape whitish; mesosoma black; metasoma brown; legs testaceous, except part of coxae and clubs of femora brown. Antenna slightly clavate, without ADOs; antennomeres in following proportions: 12:4:16:12:10:10:9:9:8:13. Head ( Fig. 3 ) shiny, slightly swollen, punctate, unsculptured among punctures, more strongly punctate on frons; frontal line complete, more protruding in anterior third of frons; occipital carina complete, laterally not reaching eyes; POL = 1.6; OL = 1.1; OOL = 3.2; OPL = 3.5; TL = 1.7. Palpal formula 6/3. Pronotum shiny, with disc punctate, unsculptured among punctures; anterior collar rugose; pronotal tubercle reaching tegula. Mesoscutum shiny, punctate, unsculptured among punctures. Notauli incomplete, reaching about 0.8 × length of mesoscutum ( Fig. 1 ). Mesoscutellum shiny, slightly punctate, unsculptured among punctures. Metanotum shiny, unsculptured. Metapectal-propodeal complex dull, reticulate rugose, without transverse or longitudinal keels. Mesopleuron dull, partly rugose and partly punctate. Metapleuron dull, reticulate rugose. Forewing hyaline, without dark transverse bands ( Figs 1, 2 ); 2R1 cell open; 2r-rs&Rs vein with distal part much longer than proximal part (25:12). Protarsomeres in following proportions: 12:3:4:24:34. Protarsomere 2 produced into hook. Enlarged claw ( Fig. 4 ) without subapical teeth, with one row of six small lamellae (shorter than enlarged claw breadth). Protarsomere 5 ( Fig. 4 ) with two rows of about 42 lamellae; distal apex with group of 11 lamellae, one of which very long. Rudimentary claw absent. Tibial spurs 1/1/2.

Male. Unknown.

Hosts. Unknown, but probably leafhoppers (Hemiptera: Auchenorrhyncha) feeding on Nothofagus (see final discussion).

Etymology. The new species is named after the collector, Mr. Eddy Poirier.

Figures

FIGURE 4. Metanteon poirieri, female holotype: chela. Scale bar 0.3 mm.

FIGURES 1–3. Metanteon poirieri, female holotype. 1, 2, habitus in dorsal (1) and lateral (2) view; 3, head in dorsal view. Scale bar 2.2 mm (1, 2), 0.5 mm (3).