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Key to Afrotropical Scelio species-groups

(Life: Kingdom: Metazoa (animals); Phylum: Arthropoda; Class: Hexapoda; Order: Hymenoptera;  Superfamily: Platygastroidea; Family Scelionidae; Subfamily: Scelioninae; Genus: Scelio)

ClassificationIdentification keys


1. Posterolateral propodeum rounded in dorsal view (best viewed with a slightly oblique angle from the anterior, Fig 4), if propodeal projection present then narrowing to a single point ( Fig. 3) and without distinct inner and outer corners (as in Fig. 1); posteroventral portion of metapleuron never with a dense patch of pilosity above hind coxa (Figs 7, 9); in lateral view ventral margin of villus strongly bent such that posterior half nearly vertical (Figs 7, 9) ... 2

─ Posterior propodeum projected laterally and forming a semicircular notch with nucha (Fig. 1), or truncate and with sharp outer corner (Fig. 2), or a dense patch of setae present above hind coxa on posteroventral metapleuron (Fig. 60); in lateral view ventral margin of villus variable in form: straight (Fig. 14) or slightly concave (Fig. 17), if bent (Fig. 15) then dorsal margin often straight ... 6


2. Mesoscutum sculptured throughout with slightly flattened rounded-reticulate sculpture that appears punctate-foveate in places (Fig. 309); pilosity throughout mesonotum brown, fine, and long (Fig. 322); netrion glabrous (Fig. 322) (anteclypeus coming to a broad point medially; wings not pictate; male RSS present; South Africa, Western Cape) ...simoni species group

─ Mesoscutum variously sculptured, but never punctate-foveate throughout, typically reticulate-striate or strigose, sometimes smooth; pilosity of mesonotum variable, if long, fine and brown, then netrion setose; netrion glabrous or setose ... 3


3. Anteclypeus between medial teeth wide and slightly concave to truncate, with isolated projection medially (Fig. 5), lateral projections well developed, pointed, often oriented outwards; netrion setose (Fig. 82), pilosity reduced to anterior margin in some; head and mesosoma sometimes with metallic coloration (Fig. 82); mesosoma with long semi-erect to erect setae scattered throughout (Fig. 82); females with wings pictate (infuscate bands) (Fig. 55); mandibles narrowed (Fig. 59), often appearing unidentate but never truly so, with at least a very reduced second tooth present (male A5 without RSS and nearly always with hyaline/white wings) ...pulchripennis group species, see Yoder et al. (2009b)

─ Anteclypeus between medial teeth projected and truncate or evenly concave (Fig. 299), without a isolated projection medially, lateral projections variously formed; netrion glabrous (Fig. 286); head and mesosoma never with metallic coloration; mesosomal pilosity not elongate and erect; wings without distinct bands, typically evenly infuscate throughout (Fig. 373); mandibles bidentate, teeth not reduced apically (Fig. 371) ... 4


4. Pilosity throughout very short, fine, sparse and appressed (Fig. 289); villus narrow, more or less equal width throughout (Fig. 11); frons usually with percurrent arcuate striae in lower half (Fig. 287); females with medial T3T4 (Fig. 288) and S2S5 usually with smooth patches; (in lateral view gena broad, somewhat flattened and with narrow occipital carina prominent; Madagascar) ... irwini species group

─ Pilosity moderate length, setae variable in width, but predominantly thicker and moderately dense (Fig. 247); villus thick, broadening posteriorly (Fig. 9); frons rarely with percurrent arcuate striae in lower half, sculpture usually interrupted medially, reticulate to rugulose (Fig. 251); females with medial T3T4 usually sculptured, medially S2S5 variably sculptured or with smooth patch (Fig. 265); (continental Africa, Madagascar) ... 5


5. Basal tooth on mandible present (Fig. 371, bt); metasoma dark brown to black, concolorous with or very slightly lighter than mesosoma, never orange or yellow; male RSS on A5 absent or apparently so; (body with at least some setae that are thickened and most commonly white, or uncommonly golden, or brown; thickened white pilosity typically present on gena, pronotal shoulder and meso- and metapleural anterodorsal margins, tips of pilosity truncated or not) ... walkeri species group

─ Basal tooth on mandible nearly always absent (Fig. 276), if present then metasoma orange (Fig 259); metasoma orange (most species) to brown (a single species), never dark brown to black, nearly always lighter than mesosoma; male RSS on A5 present ...ipomeae species group


6. Posterior propodeum with truncate lateral corner and no semicircular notch (Fig. 2), or dense patch of pilosity present above hind coxa on posteroventral metapleuron (Fig. 60) (most species with fine reticulate sculpture at base of mandible) ... ernstii species group

─ Posterior propodeum with a projection that forms a semicircular notch between inner margin and propodeal nucha (Fig.1), posteroventral metapleuron sparsely setose to glabrous (Fig. 19) ... howardi species group



Web author Simon van Noort (Iziko South African Museum)

 

Citation: van Noort, S. 2021. WaspWeb: Hymenoptera of the Afrotropical region. URL: www.waspweb.org (accessed on <day/month/year>).

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