Odiniidae Gaimari, 2007, gen. nov.
Creators: name: Gaimari, Stephen D.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Odiniidae

description: Key to New World genera of Odiniidae
Following is a key to all odiniid genera in the New World. Nearctic genera not known from the Neotropical Region are indicated with brackets []. The two species of Helgreelia, gen. nov., are also differentiated in the key.
1. Posterior ocelli in front of line between medial vertical setae; ocelli usually arranged in isosceles tri- angle with distance between posterior pair conspicuously less than between either posterior ocellus and anterior ocellus; frons usually relatively arched (sometimes conspicuously tuberculate); scutel- lar disc sometimes setulose; in profile, face and frons more or less in line or sloping; TRAGINOPI- NAE.....................................................................................................................................................3
- Posterior ocelli in line with medial vertical setae; ocelli arranged in equilateral triangle or with dis- tance between posterior pair greater than between either posterior ocellus and anterior ocellus; frons flat to slightly concave; scutellar disc bare; in profile, face distinctly angulate with frons at antennal insertion; ODINIINAE ........................................................................................................................2
2 (1). Postocellar setae reduced, short and thin; dorsocentral setae 4 (1+3); anepisternum with 1–2 strong setae plus several setulae; dorsal preapical tibial setae well developed ..... [Neoalticomerus Hendel]
- Postocellar setae well developed, subequal to ocellar setae; dorsocentral setae 5 (1+4); anepisternum bare; dorsal preapical tibial setae thin, hair-like ...................................... Odinia Robineau-Desvoidy
3 (1). Frons lacking enlarged tubercle, but occasionally with ocelli on raised bump which is little larger than diameter of anterior ocellus.........................................................................................................6
- Ocelli on moderately large to large tubercle, well in front of vertex..................................................4
4 (3). Arista long plumose; vein M1 strongly curved anterad at apex ........................ Paratraginops Hendel
- Arista pubescent; vein M1 straight......................................................................................................5
5 (4). Propleuron bearing 2 setae .................................................................................. Neotraginops Prado
- Propleuron lacking setae ...................................................................................[Traginops Coquillett]
6 (3). Genal seta absent; costal vein extended to vein R4+5 or slightly beyond (Figs. 3 A, 3C) ................... 9
- Genal seta present; costal vein extended to vein M1 (Fig. 3 B) .......................................................... 7
7 (6). Scutellum at most bearing 2–5 setulae along margin .......................................... Lopesiodinia Prado
- Scutellar disc and margins bearing numerous setulae ....................................................................... 8
8 (7). Only anterior fronto-orbital seta inclinate ........................................................ Schildomyia Malloch
- Several anterior fronto-orbital setae inclinate (Fig. 2 C) ........................... Neoschildomyia, gen. nov.
9 (6). Postocellar setae present; posterior part of head straight from dorsal view (Fig. 2 E) ..........................
............................................................................................................................. Pradomyia gen. nov. - Postocellar setae absent; posterior part of head concave from dorsal view (Fig. 2 A) .....................10 10 (9). Several anterior fronto-orbital setae inclinate; scutellar disc setulose .................... Shewellia Hennig
- With single inclinate fronto-orbital seta (Fig. 2 A); scutellar disc bare .... Helgreelia, gen. nov. …. 11
11 (10). Abdomen orange, with fine pale setulae (Fig. 1 A, inset) ...................................... H. albeto, sp. nov.
- Abdomen grey and brown pruinose, with black setulae (Fig. 1 B, inset) .............. H. parkeri, sp. nov.
description: Published as part of Gaimari, Stephen D., 2007, Three new Neotropical genera of Odiniidae (Diptera: Acalyptratae), pp. 1-16 in Zootaxa 1443 on pages 2-3, DOI: 10.5281/zenodo.176054