Dinotrema multiareolatum Peris-Felipo, 2016

Peris-Felipo, Francisco Javier & Belokobylskij, Sergey A., 2016, First record of the genus Dinotrema Foerster, 1862 (Hymenoptera, Braconidae, Alysiinae) from the Neotropical region, with description of four new species and a key to the New World taxa, European Journal of Taxonomy 179, pp. 1-23 : 4-7

Dinotrema multiareolatum Peris-Felipo sp. nov.

urn:lsid:zoobank.org:act:682105B3-80C4-4E91-A1B7-1F20FBE132AE

Figs 1–2

Etymology

Named “multiareolatum” because of the high number of small areolae on the propodeum.

Type material

Holotype

BRAZIL: ♀, Nova Teutonia, 27º11’B 52º23’L, 28 May 1937 (F. Plaumann leg.) [B.M. 1937–656] ( BNHM).

Paratypes

BRAZIL: 23 ♀♀, same label as holotype, but Aug. 1935, 16 Sep. 1935, Oct. 1935, Nov. 1935, 8 Mar. 1936, Feb. 1937, 28 May 1937, 12 Jun. 1937, 14 Jun. 1937, 15 Jun. 1937, 16 Jun. 1937, 10 Jul. 1937, 26 Jul. 1937 [B.M. 1937–656], 16 Aug. 1938 [B.M. 1938–682], 7 Oct. 1938 [B.M. 1938–312]; 6 ³³, same label as holotype, but 4 Jun. 1937, 11 Jun. 1937, 4 Aug. 1937, 13 Apr. 1938 [B.M. 1938–682] ( BNHM, ZISP); 1 ♀, Argentina, Misiones Province, Iguazu Nat. Park., ca. 140 m, 8–11 Apr. 1974, Malaise trap (C. & M. Vardy) [B.M. 1974–204] ( BNHM).

Description

Female

HEAD. In dorsal view 1.6 times as wide as long, 1.5 times as wide as mesoscutum, smooth, with temple rounded behind eyes. Eye in lateral view 1.6 times higher than wide and 1.5 times as wide as temple medially. POL 1.1 times as long as OD; OOL 2.6 times OD. Face 1.9 times as wide as high, completely covered by numerous setae; inner margins of eyes subparallel. Clypeus 2.3 times as wide as high, slightly curved ventrally. Paraclypeal fovea short, reaching halfway distance between clypeus and eye. Mandible 3-dentate, slightly widened towards apex, 1.7 times as long as its maximum width. Upper tooth small, shorter than lower and middle teeth; middle tooth small, slightly longer than upper tooth, wide basally and pointed apically; lower tooth short, wide, rounded. Antennae 23-segmented, 1.1 times longer than body. Scape 1.9 times as long as pedicel. First flagellar segment 3.8 times as long as its apical width, 1.3 times as long as second segment. Second to thirteenth flagellar segments 2.2–2.5 times as long as their maximum width; 14 th to 20 th segments about 2.0 times, and 21 st (apical) segment 2.5 times as long as wide.

MESOSOMA. In lateral view 1.3 times as long as high. Mesoscutum (in dorsal view) 0.9 times as long as its maximum width, with numerous setae situated on middle part of mesoscutum. Notauli mainly absent on horizontal surface of mesoscutum. Mesoscutal pit present and elongate. Prescutellar depression smooth, without lateral carinae. Precoxal sulcus present, crenulate, not reaching anterior and/or posterior margins of mesopleuron. Posterior mesopleural furrow smooth. Propodeum sculptured, with complete and distinct median longitudinal carina and with transversal carinae reaching sides of propodeum. Propodeal spiracles relatively small.

WINGS. Length of fore wing 2.6 times its maximum width. Radial (marginal) cell ending at apex of wing, 3.8 times as long as its maximum width. Vein cuqu1 (2-SR) present and sclerotized. Vein r2 (3-SR) 2.1 times as long as vein cuqu1 (2-SR); vein r3 (SR1) 2.8 times as long as vein r2 (3-SR). Nervulus (cu-a) distinctly postfurcal. Brachial (subdiscal) cell closed distally, 3.6 times as long as its maximum width. Hind wing 5.5 times as long as its maximum width.

LEGS. Hind femur 4.4 times as long as its maximum width. Hind tibia slightly widened apically, 9.4 times as long as its maximum subapical width and as long as hind tarsus. First segment of hind tarsus 1.8 times as long as second segment.

METASOMA. First tergite slightly widened towards apex, 3.1 times as long as its apical width, entirely striate. Ovipositor 1.2 times as long as first tergite, 0.6 times as long as metasoma, 1.7 times as long as hind femur.

COLOUR. Body, flagellar segments and pterostigma brown. Legs yellow, scape and pedicel brownish yellow. Wings hyaline.

LENGTH. Body 1.6 mm; fore wing 2.1 mm; hind wing 1.3 mm. VARIATION. Body 1.5–1.7 mm; fore wing 2.0– 2.2 mm; hind wing 1.3–1.5 mm.Antenna 22–24-segmented. Hind femur 4.4–4.5 times as long as its maximum width.

Male

Body length 2.0 mm; fore wing 2.3 mm; hind wing 1.5 mm. Antenna 27–28-segmented. First flagellar segment 4.0 times as long as its maximum width.

Comparative diagnosis

This new species is similar to Dinotrema caudatulum (Fischer, 1969) , D. communis (Fischer, 1969) and D. sylvaticae (Fischer, 1969) . Dinotrema multiareolatum sp. nov. differs from D. caudatulum in having the mandible 1.7 times as long as its maximum width (1.0 times in D. caudatulum ), the first flagellar segment 3.8 times as long as its maximum width (3.0 times in D. caudatulum ), hind femur 4.4 times as long as its maximum width (3.5 times in D. caudatulum ), the first metasomal tergite 3.1 times as long as its apical width (1.5 times in D. caudatulum ). On the other hand, D. multiareolatum sp. nov. differs from D. communis in having the mandible 1.7 times as long as its maximum width (1.3 times in D. communis ), the first flagellar segment 3.8 times as long as its maximum width (3.0 times in D. communis ), hind femur 4.4 times as long as its maximum width (3.9 times in D. communis ), and the first metasomal tergite 3.1 times as long as its apical width (1.8 times in D. communis ). Finally, D. multiareolatum sp. nov. differs from D. sylvaticae in having the mandible 1.7 times as long as its maximum length (1.2 times in D. sylvaticae ), posterior mesopleural furrow smooth (crenulate in D. sylvaticae ), hind femur 4.4 times as long as its maximum width (3.6 times in D. sylvaticae ), and the first metasomal tergite 3.1 times as long as its apical width (2.0 times in D. sylvaticae ).

According to the key by Peris-Felipo et al. (2014b), this new species is similar to the Palaearctic D. oleraceum (Tobias, 1962) and D. paludellae Munk & Peris-Felipo, 2013 . Dinotrema multiareolatum sp. nov. differs from D. oleraceum in having the mandible 1.7 times as long as its maximum width (2.0 times in D. oleraceum ), the first flagellar segment 3.8–4.0 times as long as its maximum width (3.0 times in D. oleraceum ), hind femur 4.4 times as long as its maximum width (4.0 times in D. oleraceum ), and the first metasomal tergite 3.1 times as long as its apical width (1.7 times in D. oleraceum ). Finally, D. multiareolatum sp. nov. differs from D. paludellae in having the mandible 1.7 times as long as its maximum width (1.85–1.90 times in D. paludellae ), the first flagellar segment 3.8–4.0 times as long as its maximum width (2.3–2.4 times in D. paludellae ), hind femur 4.4 times as long as its maximum width (3.6–3.7 times in D. paludellae ), and the first metasomal tergite 3.1 times as long as its apical width (2.2–2.3 times in D. paludellae ).

Figures

Fig. 1. Dinotrema multiareolatum Peris-Felipo sp. nov. (A, C–F ♀; B ³). A–B. Habitus, lateral view. C. Head, lateral view. D. Mandible. E. Antenna. F. Face, frontal view.

Fig. 2. Dinotrema multiareolatum Peris-Felipo sp. nov. (♀). A. Head, dorsal view. B. Mesosoma, lateral view. C. Head, sublateral view and mesonotum, dorsal view. D. Propodeum, dorsal view. E. First metasomal tergite. F. Fore and hind wings.