Dyscritobaeus antananarivensis Tortorici et Caleca, sp. nov.
Creators: name: Tortorici, Francesco
name: Caleca, Virgilio
name: Noort, Simon Van
name: Masner, Lubomir
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Scelionidae
Dyscritobaeus
Dyscritobaeus antananarivensis

description: Dyscritobaeus antananarivensis Tortorici et Caleca sp. nov.
(Figs 33, 38d, 42, 60, 61, 62, 63)
urn:lsid:zoobank.org:act:449C0 A 01-DB17-45E2-892E-76 EADAA 63 AD0 http://hol.osu.edu/index.html?id=410565
Diagnosis. This species is easily distinguished from D. comitans and D. ndokii by the presence of the occipital lunula and specillum in males. The species can be differentiated from D bicolor, D. flavus, D. ndokii and D. parvipennis by the dorsal tooth, which is 4 times longer than the ventral tooth, pm> st (Fig. 38d), a triangular metascutellum and long metanotal spine, metapleural carinae with two pointed projections and specillum present in males; furthermore it differs from D. ndokii, also by an anteriorly well delimited posterior mesepimeral area (Figs 63). Dyscritobaeus antananarivensis differs from D. sulawensis and D. madagascarensis by the sex segment keel on the distal part of fifth antennomere (Fig. 42), OOL/POL= 0.78, T2 with specillum and T3 without striae (Fig. 62); it also differs from D. sulawensis by the large dorsal tooth of the mandible, which is 4 times as long as than the ventral tooth (Fig. 61).
Description. Male. Length of the body: 0.75 mm
Head. Color, light brown. Coriaceous, frontal depression with a smooth area starting from the interantennal process and reaching the mid eye height, central keel surpassing the eye level (Fig. 60). Fan-like striation in malar area from oral foramen to eye margin, striation just evident in genal area. Preoccipital lunula present and sculptured (Fig. 62). Measures of the head width: height: length = 0.31: 0.27: 0.16 mm. Malar sulcus length: 0.08 mm. Measures of eye width: heigth = 0.1: 0.13 mm. OOL: LOL: POL = 0.07: 0.05: 0.9 mm. Distance lateral ocellus to occipital carina less than ocellar diameter. Mandibles bidentate with dorsal tooth 4 time longer than ventral one (Fig. 61).
Antenna. A 1 – A 12 brown; A 12 length twice A 11 length. Sex segment with keel in the distal part of antennomere (Fig. 42).
Mesosoma. In dorsal view, mesoscutum, scutellum and propodeum light brown. (Fig. 62). In lateral view, pleurae light brown (Fig. 63). In dorsal view mesoscutum and mesoscutellum coriaceous. In lateral view speculum with furrow, femoral depression smooth, posterior mesepimeral area delimitate anteriorly by a mesepimeral sulcus with a crenulate furrow, dorsal and ventral metapleural area with crenulate depression with rugae (Fig. 63). Metapleural carina with two pointed projections, one adjacent to propodeal spiracle and second one at posterior margin. Metascutellum visible in dorsal view, triangular; large metanotal spine, slightly surpassing propodeum (Fig. 62). Mesonotum length 0.18 mm, width 0.28 mm; mesoscutellum length 0.09 mm, width 0.19 mm.
Wings. Fore wing hyaline, surpassing metasoma; wing ratio st: pm: mg: ww: af: pf = 1: 1.0: 0.4: 2.9: 0.3: 0.8; angle st-pm= 28° as in Fig. 38d. st length is 0.08 mm.
Legs yellow, except coxae dark yellow.
Metasoma. (Fig. 62). In dorsal view, tergites brown, in ventral view sternites brown, laterotergites light brown. On T1 pair of longitudinal submedial carinae are aligned with the metapleural carinae. They separate a lateral coriaceous area from an internal area where striate sculpture starts with basal grooves and finishes to coriaceous. T2 with foveolate anterior margin; costulate to colliculate, drop shaped specillum in the middle of T2 not well delimitated at sides and on top; costae converging to posterior margin of specillum (Figs 33, 62). T3 without striae.
Comment. The species is represented by only a single male specimen. The combination of character states represented by the presence of a specillum in male and a long dorsal tooth, which is 3-4 times as long as the ventral tooth is unusual in Afrotropical species, but this character combination is commonly represented in Dyscritobaeus species from the Oriental region.
Distribution. (Fig. 64)
Etymology. The name of this species is linked to the locality Antananarivo where the type was collected. Material examined. Holotype. Ƌ: AFRICA: Madagascar: 25km W. Tananarive, 1983/05/24 – 1983/05/29, J. Noyes & M. C. Day, (BMNH), [BMNH (E)#971551] (wings on slide, in Fig. 38d).
description: Published as part of Tortorici, Francesco, Caleca, Virgilio, Noort, Simon Van & Masner, Lubomir, 2016, Revision of Afrotropical Dyscritobaeus Perkins, 1910 (Hymenoptera: Scelionidae), pp. 1-59 in Zootaxa 4178 (1) on pages 23-24, DOI: 10.11646/zootaxa.4178.1.1, http://zenodo.org/record/261632