Dinotrema (Synaldis) latusdentertium, Dias de Oliveira & Penteado-Dias, 2024

Dias de Oliveira, Franciélle & Penteado-Dias, Angélica Maria, 2024, First record of subgenus Synaldis Foerster (Hymenoptera, Braconidae, Alysiinae, Dinotrema Foerster) from Chile, with description of ten new species, ZooKeys 1206, pp. 275-314 : 275-314

Dinotrema (Synaldis) latusdentertium sp. nov.

Figs 55–64

Type material.

Holotype: Chile • ♀ ( MNNC); Osorno , Parque Nacional Puyehue, Antillanca; 40 ° 46 ' 55 " S, 72 ° 12 ' 39 " W; alt. 987 m; 16–30 Mar. 2019; D. Amorim and V. Silva leg.; Malaise trap . Paratype: Chile • 1 ♀ ( DCBU 386606 ); same data as for holotype, except 40 ° 44 ’ S, 72 ° 19 ’ W; alt. 440 m; 14 Jan. – 3 Feb. 2017; pan trap .

Diagnosis.

This species differs from other New World species of Synaldis by the combination of the following characteristics: in lateral view, eye wider than temple, at least slightly (Fig. 60 ); mandible with three relatively large teeth, diagonal carina present, mandibular apex wider than base (Fig. 57 ); F 1 3.5–3.8 × as long as wide (Fig. 59 ); mesoscutal pit present, conspicuous (Fig. 61 ); propodeum with areola, median longitudinal carina incomplete to complete, transverse carinae complete (Fig. 62 ); fore wing vein cu-a distinctly postfurcal, 1 - CU 1 as long as cu-a (Fig. 63 ); hind wing 4.9 × as long as wide; hind tibia 10.0–10.2 × as long as wide (Fig. 64 ).

Dinotrema (S.) latusdentertium sp. nov. is similar to D. (S.) pilosicaudatum sp. nov., see their distinctions in the identification key.

Description.

♀. Length. Body: 2.6–2.8 mm. Fore wing: 3.05–3.30 mm. Hind wing: 2.3–2.4 mm.

Head: in dorsal view (Fig. 56 ), 1.8–1.9 × as wide as long, 1.2–1.3 × as wide as mesosoma, ca as wide at eyes as temples. Frons smooth or with weak mid groove. POL 1.4–1.6 × as OD, OOL 2.6–2.7 × as OD. In lateral view (Fig. 60 ), eye 1.4–1.5 × as high as wide, 1.1–1.2 × as wide as temple. Face 1.6–1.7 × as wide as high (Fig. 58 ), 1.6–1.9 × as wide as clypeus, smooth or with a weak longitudinal ridge dorsally. Clypeus 2.1 × as wide as high, almost straight ventrally. Malar space 0.5–0.7 × as clypeus height. Paraclypeal fovea short size. Mandible 1.5 × as long as wide (Fig. 57 ), diagonal carina present. Mandibular apex 1.2 × wide as base. Upper tooth rounded. Middle tooth subacuminate, longer than other teeth. Lower tooth largely rounded, longer than upper tooth. Upper tooth ca as wide as middle, narrower than lower tooth. Antenna with 20–21 segments (Fig. 59 ), 0.9 × as long as body. Scape 1.5–1.8 × as long as pedicel. F 1 3.5–3.8 × as long as wide, 1.2 × as long as F 2. F 2 2.6–2.8 × as long as wide. F 3 2.0–2.4 × as long as wide. AF 2.4–2.6 × as long as wide. Maxillary palp 1.4 × as long as head height.

Mesosoma: 1.2–1.3 × as long as high (Fig. 60 ), 1.9–2.0 × as long as wide. Mesoscutum as long as wide, notauli absent on horizontal surface of mesoscutum (Fig. 61 ). Mesoscutal pit present, oval – elongate, occupying 0.2 × of mesoscutal length. Prescutellar depression 2.1–2.3 × as long as wide, with median carina complete, smooth laterally. Side of pronotum crenulate. Precoxal sulcus crenulate medially, not reaching anterior and / or posterior margins of mesopleuron (Fig. 60 ). Posterior mesopleural furrow smooth. Propodeum mainly rugulose to rugose (Fig. 62 ), areola 0.9 × as high as wide; median longitudinal carina incomplete (interrupted at mid-areola) to complete; transverse carinae complete. Propodeum with protuberance in lateral view. Propodeal spiracle small to middle (Fig. 60 ), 0.3–0.4 × distance from spiracle to base of propodeum.

Wings: fore wing 2.7 × as long as wide, vein 1 - SR present, (r + 3 - SR) 6.2 × as long as r-m, SR 1 1.7–2.0 × as long as (r + 3 - SR); cu-a postfurcal, 1 - CU 1 as long as cu-a. Marginal cell 4.0 × as long as wide, submarginal cell 2.0 × as long as wide, first subdiscal cell 2.8 × as long as wide (Fig. 63 ). Hind wing 4.9 × as long as wide, vein 1 - M 0.5 × as long as M + CU, 1.2–1.3 × as long as 1 r-m; m-cu absent.

Legs: hind femur 4.7–5.0 × as long as wide. Hind tibia 10.0–10.2 × as long as wide, 1.1–1.3 × as long as hind tarsus. First segment of hind tarsus 2.0–2.1 × as long as second segment (Fig. 64 ).

Metasoma: 1.7 × as long, and as wide as mesosoma (Fig. 55 ). T 1 strigose to rugose, 1.70–1.85 × as long as wide, apex 1.6 × as wide as base. Ovipositor 0.4 × as long as metasoma, 1.2–1.5 × as long as T 1, 0.9 × as long as hind femur. Ovipositor sheath with some sparse and delicate setae (except on 1 / 4 apical almost glabrous), 0.3–0.4 × as long as metasoma, 1.1–1.4 × as long as T 1 (Fig. 64 ).

Color: Head brown to dark brown, except mandibles yellow, scape and pedicel brown to yellowish. Mesosoma brown to light brown, except scutellar disc and tegulae brown to yellow; propleuron, mesopleuron and propodeum orange to yellowish. Legs yellow. Metasoma brown except ovipositor yellow. Wings hyaline, veins brown.

Male. Unknown.

Etymology.

The epithet is an adjective derived from Latin, combining latus (wide), den (from dens, Latin for tooth), and tertius (third). The species name refers to its lower mandibular tooth wider than upper tooth (Fig. 57 ).

Distribution.

Chile.

Comments.

Based on the shape of the mandibles, relative length of the flagellar segments, and the propodeal sculpture, D. (S.) latusdentertium sp. nov. can be associated with the Nearctic species Dinotrema (Synaldis) glabrifovea ( Fischer, 1967) . However, in D. (S.) glabrifovea the mesoscutal pit is absent, the face and clypeus are relatively wider, and the antenna has 25 segments, among other differences (according to Peris-Felipo and Belokobylskij 2017).

Figures

Figures 55–64. Dinotrema (Synaldis) latusdentertium sp. nov. (holotype ♀, except 58, 61 paratype ♀) 55 habitus, lateral view 56 head, dorsal view 57 mandible, lateral view 58 head, frontal view 59 antenna 60 head and mesosoma, lateral view 61 mesonotum, dorsal view 62 propodeum, dorsal view 63 wings 64 hind leg, metasoma and ovipositor, lateral view.