Gonadryinus bicarinatus, Guglielmino, Adalgisa, Olmi, Massimo, Marletta, Alessandro & Speranza, Stefano, 2017

Guglielmino, Adalgisa, Olmi, Massimo, Marletta, Alessandro & Speranza, Stefano, 2017, Description of the first species of Gonadryinus Olmi (Hymenoptera, Dryinidae) from the Afrotropical region, Zootaxa 4238 (3), pp. 440-444 : 441-442

Gonadryinus bicarinatus sp. nov.

( Figures 1, 2 )

Material examined. Holotype ♀: MADAGASCAR: Fianarantsoa Province, Ranomafana National Park, Belle Vue at Talatakely , 21°15.99'S 47°25.21'E, 1020 m, 26.II–10.III.2003, Malaise trap, secondary tropical forest, R. Harin’Hala leg., MA-02-09C-55 ( CAS) . Paratypes: MADAGASCAR: same locality label as holotype, 4– 16.V.2003, MA-02-09C-60, 1♀ ( MOLC) ; Fianarantsoa Province, Ranomafana National Park , radio tower at forest edge, 21°15.05'S 47°24.43'E, 1130 m, 18–27.II.2003, MT, mixed tropical forest, R. Harin’Hala leg., MA-02-09B- 53, 1♀ ( CAS) ; same locality label, 17–30.V.2003, MA-02-09B-61, 1♀ ( CAS) .

Diagnosis. Female with palpal formula 5/3; antenna without tufts of long setae; dorsal surface of metapectalpropodeal complex with two parallel longitudinal keels; enlarged claw without subapical teeth ( Fig. 3).

Description. Female ( Fig. 1 ). Fully winged; length 3.5–4.4 mm (holotype 3.5 mm). Head testaceous, except large brown transverse band on ocellar region, temple and posterior half of face; antenna of holotype with first two antennomeres testaceous, other segments missing; antenna of paratype MA-02-09B-60 with antennomeres 1–2 testaceous, antennomeres 3–8 brown, 9–10 testaceous-whitish; propleuron brown, except ventral side testaceous; pronotum brown, with testaceous spots on posterior collar and pronotal tubercle; scutum brown, except lateral regions partly testaceous; rest of mesosoma black, except mesopleuron partly testaceous; petiole brown; metasoma brown, except ventral side testaceous; legs yellow-testaceous, except club of profemur darkened. In paratype MA- 02-09C-60, mesosoma brown-black, except testaceous spots on propleuron, posterior surface of pronotum, lateral regions of scutum, mesopleuron; metasoma brown; legs totally yellow-testaceous. Antenna of holotype with ratio of antennomeres 1–2 about 9:6. Antenna of paratype MA-02-09C-60, very slender, filiform; ratio of antennomeres about 9:7:45:35:20:14:9:6:6:10. Head slightly swollen, shiny, unsculptured; frontal line of holotype complete (frontal line of paratype incomplete, present only in posterior half of face); occipital carina complete; holotype with POL = 4; OL = 2; OOL = 6; TL = 5; greatest breadth of posterior ocelli about as long as POL; posterior ocelli touching occipital carina; paratype MA-02-09C-60, with POL = 4; OL = 2; OOL = 6; OPL = 0.5; TL = 5; greatest breadth of posterior ocelli about as long as POL. Palpal formula 5/3. Pronotum shiny, punctate, unsculptured among punctures, crossed by two transverse impressions, anterior one very deep and posterior one weak; anterior collar very long; disc very short and humped; posterior collar short; pronotal tubercle reaching tegula. Scutum shiny, with lateral regions unsculptured and median region finely punctate, unsculptured among punctures. Notauli complete ( Fig. 2 ), posteriorly separated; minimum distance between notauli shorter than greatest breadth of posterior ocelli (2:4). Scutellum and metanotum almost flat, shiny, unsculptured. Metapectal-propodeal complex dull, with dorsal surface (probably corresponding to “metapostnotum” sensu Kawada et al. 2015) granulated, except two median subparallel carinae connecting anterior margin with transverse keel separating dorsal and posterior surface; posterior surface (probably corresponding to “first abdominal tergum” sensu Kawada et al. 2015) with two median longitudinal keels, median area shiny and slightly granulated (in paratype MA-02-09C-60, with some distal transverse keels), lateral areas with two large shiny and slightly granulated areas. Forewing hyaline, without dark transverse bands; distal part of stigmal vein longer than proximal part (31:11); marginal cell open (almost closed). Protarsal segments of holotype in following proportions: 15:4:6:29:38. Protarsal segments of paratype MA-02-09C- 60 in following proportions: 16:3:7:30:38. Protarsal segment 3 produced into hook. Foreleg with following proportions: 41 (coxa): 41 (trochanter): 45 (femur): 43 (tibia): 31 (enlarged claw). Enlarged claw ( Fig. 3) without teeth, with one row of 9–11 lamellae + 1–2 distal lamellae. Segment 5 of protarsus ( Fig. 3) with one row of 7 lamellae in holotype (with two rows of 2 (proximal) + 7 lamellae in paratype MA-02-09C-60; with two rows of 1 (proximal) + 6 lamellae in paratype MA-02-09B-53); distal apex with group of about 8–10 lamellae. Tibial spurs 1/1/2.

Male. Unknown.

Hosts. Unknown.

Etymology. The specific epithet bicarinatus is a Latin adjective meaning "with two carinae", indicating the two long longitudinal and subparallel carinae present on the dorsal surface of the metapectal-propodeal complex.

Figures

FIGURES 1 – 2. Gonadryinus bicarinatus, female paratype MA- 02 - 09 B- 61 in dorsal view. 1, habitus; 2, mesosoma. Scale bar 2.7 mm (1), 1.0 mm (2).