Pauximyia, Limeira-De-Oliveira & Marques & Gaimari & Rafael, 2020

Limeira-De-Oliveira, Francisco, Marques, Dayse Willkenia A., Gaimari, Stephen D. & Rafael, José A., 2020, Pauximyia, a new genus of Odiniidae (Diptera: Acalyptratae) with description of two new species from Brazil, Zootaxa 4728 (2), pp. 227-236 : 228

Key to extant genera of Odiniidae in the Neotropical Region and to species of the Pauximyia gen. nov.

(modified from Gaimari & Mathis 2011)

1. Posterior ocelli in line with inner vertical setae; ocelli arranged in equilateral triangle or with distance between posterior pair greater than between posterior ocellus and anterior ocellus; frons flat to slightly concave. Scutellar disc bare. In profile, face usually distinctly angulate with frons at antennal insertion ( Odiniinae )...................... Odinia Robineau-Desvoidy

- Posterior ocelli in front of line between inner vertical setae; ocelli usually arranged in isosceles triangle with distance between posterior pair conspicuously less than between posterior ocellus and anterior ocellus; frons usually relatively arched (sometimes conspicuously tuberculate). Scutellar disc sometimes setulose. In profile, face and frons more or less in line or sloping ( Traginopinae )............................................................................................ 2

2. Ocelli on moderately large to large tubercle, well in front of vertex.............................................. 3

- Ocelli and frons normal, lacking enlarged tubercle, but occasionally on raised bump little larger than diameter of anterior ocellus................................................................................................. 4

3. Arista long plumose. Vein M 1 strongly curved at apex....................................... Paratraginops Hendel

- Arista pubescent. Vein M 1 straight ......................................................... Neotraginops Prado

4. Costa extended to vein M 1. Genal seta present ............................................................... 5

- Costa extended to vein R 4+5. Genal seta absent.............................................................. 7

5. Scutellum at most bearing 2–5 setulae along margin.......................................... Lopesiodinia Prado

- Scutellar disc and margins bearing numerous setulae......................................................... 6

6. Only anterior fronto-orbital seta inclinate.................................................. Schildomyia Malloch

- Several anterior fronto-orbital setae inclinate............................................ Neoschildomyia Gaimari

7. Postocellar setae present ................................................................................ 8

- Postocellar setae absent............................................................................... 10

8. Scutellar disc setulose. Several anterior fronto-orbital setae inclinate................................ Shewellia Hennig

- Scutellar disc bare. Only one fronto-orbital seta inclinate..................................................... 9

9. Face uniformly yellow, lacking mid-longitudinal stripe. Lunule higher than frons. Antennae separated by a distance greater than 3X the diameter of a single antennal socket. Vein M 1 becoming distinctly weaker from crossvein dm-m towards wing margin.................................................................................... Helgreelia Gaimari

- Face brown to black pruinose with white mid-longitudinal grey pruinose stripe. Lunule shorter than frons. Antennae separated by a maximum distance of 2X the diameter of a single antennal socket. Vein M 1 normal, distinctly reaching wing margin........................................................... Inpauema Limeira-de-Oliveira, Marques, Reis & Rafael

10. Four and/or five pairs of fronto-orbital setae. Dorsocentral setae 4 (1+3). Scutellum with setulae anterior to basal scutellar seta. Surstylus articulated with epandrium....................................................... Pradomyia Gaimari

- Three pairs of fronto-orbital setae ( Figs 3–4 , 15–16 ). Dorsocentral setae 5 (1+4). Scutellum lacking setulae. Surstylus non-articulated with epandrium ( Figs 9, 12 , 20 )............................................... Pauximyia gen. nov.... 11

11. Lunule with velvet black band through upper part of antennal bases ( Figs 3–4 ). Hind tibia almost as long as fore tibia ( Fig. 1 )............................................................................. Pauximyia oliveirai , sp. nov.

- Lunule entirely white ( Figs 15–16 ). Hind tibia about half the length of the fore tibia ( Fig. 13 ).... Pauximyia vidali , sp. nov.

Figures

FIGURES 1–7. Pauximyia oliveirai sp. nov., Holotype ♂. 1, habitus, lateral view (abdomen dissected); 2, head, lateral view; 3, head, frontal view; 4, head, frontal view, inclined; 5, thorax, dorsal view; 6, abdomen; 7, wing. Abbreviations: bm-m—basal medial crossvein; CuA—anterior branch of cubital vein; CuA+CuP—anterior branch of cubital vein + posterior branch of cubital vein; dm-m—discal medial crossvein; M1—first branch of media; M4—fourth branch of media; R2+3—second branch of radius; R4+5—third branch of radius; r-m—radial–medial crossvein.

FIGURES 13–18. Pauximyia vidali sp. nov., Holotype ♂. 13, habitus, lateral view (abdomen dissected); 14, head, lateral view; 15, head, anterodorsal view; 16, head, frontal view; 17, thorax, dorsal view; 18, wing.

FIGURES 8–12. Pauximyia oliveirai sp. nov., Holotype ♂. 8, terminalia, dorsal view; 9, epandrium, cercus and surstylar lobes, posterior view; 10, terminalia, lateral view; 11, epandrium, hypandrium, pregonite, postgonite and phallus, ventral view; 12, terminalia, lateral view, inclined.

FIGURES 19–23. Pauximyia vidali sp. nov., Holotype ♂. 19, terminalia, dorsal view; 20, epandrium, cercus, surstylar lobes and phallus, posterior view; 21, terminalia, lateral view; 22, epandrium, hypandrium, gonocoxal apodeme, pregonite, postgonite and phallus, ventral view; 23, epandrium, gonocoxal apodeme, pregonite, postgonite and phallus, ventral view inclined.