Roederiodes, Coquillett, 1901

Sinclair, Bradley J., 2023, Revision of New World species of Roederiodes Coquillett (Diptera: Empididae: Clinocerinae), Zootaxa 5301 (3), pp. 336-364 : 339

publication ID	https://doi.org/ 10.11646/zootaxa.5301.3.2
publication LSID	lsid:zoobank.org:pub:9451FCC7-EA59-4ACE-B45F-8B012B19D8AA
DOI	https://doi.org/10.5281/zenodo.8042902
persistent identifier	https://treatment.plazi.org/id/E6066E10-FFB0-7733-FF0C-FECBFA05FA75
treatment provided by	Plazi
scientific name	Roederiodes
status

Treatment

Key to New World species of Roederiodes View in CoL View at ENA

1 Seven or eight weak dorsocentral setae ( Fig. 10 View FIGURES 8–11 ); ocellar and vertical setae weak ( Fig. 10 View FIGURES 8–11 ) (only males distinguishable).... 2

- Five strong dorsocentral setae ( Fig. 11 View FIGURES 8–11 ); ocellar and vertical setae strong ( Fig. 11 View FIGURES 8–11 ).................................. 3

2 Male terminalia with clasping cercus broad and rounded apically ( Fig. 17 View FIGURES 16–19 ) [Arizona, New Mexico]..... R. chillcotti sp. nov .

- Male terminalia with clasping cercus narrow, recurved, with stout apical setae ( Fig. 29 View FIGURE 29–30 ) [Arizona, California, New Mexico]...................................................................................... R. wirthi Chillcott View in CoL

3 Base of M 2 forming distinct crossvein at apex of cell dm, longer than r-m crossvein ( Fig. 8 View FIGURES 8–11 ) [Colorado, Utah, Manitoba, Northwest Territories]..................................................................... R. distinctus Chillcott

- Base of M 2 forming indistinct crossvein at apex of cell dm, shorter than r-m crossvein or crossvein absent and veins M 1 and M 2 petiolate, coalescing for short distance ( Figs 5, 6 View FIGURES 5–7 , 9 View FIGURES 8–11 )......................................................... 4

4 Antennal stylus 2 times longer than postpedicel ( Fig. 12 View FIGURES 12–13 ); upper face brown...................................... 5

- Antennal stylus up to 1.5 times longer than postpedicel ( Fig. 7 View FIGURES 5–7 ); upper face with blue pruinescence.................... 7

5 Prescutellar depression with central whitish pruinescent stripe (as in Fig. 14 View FIGURES 14–15 ); male terminalia with clasping cercus long and slender anteriorly ( Fig. 24 View FIGURES 24–28 ) [Arizona, Baja California]......................................... R. notialis sp. nov.

- Prescutellar depression without whitish pruinescent stripe (as in Fig. 15 View FIGURES 14–15 ); male terminalia with clasping cercus subtriangular ( Fig. 23 View FIGURES 20–23 )............................................................................................ 6

6 Ocellar setae shorter than postpronotal seta; male unknown [Cocos Island, Costa Rica]............... R. wigginsi Wilder View in CoL

- Ocellar setae longer than postpronotal seta; male terminalia with clasping cercus subtriangular, produced posteriorly ( Fig. 23 View FIGURES 20–23 ) [Southern Appalachians, USA].......................................................... R. moultoni sp. nov.

7 Pleura brown to dark brown, with bluish pruinescence ( Figs 5, 6 View FIGURES 5–7 ); if pale brown, then prescutellar depression with whitish or bluish pruinescent stripe ( Fig. 14 View FIGURES 14–15 ) or hind tibia with distinct ventral setae [North America, north of Arizona]............ 8

- Pleura pale brown, without bluish pruinescence ( Fig. 13 View FIGURES 12–13 ) [Arizona, Costa Rica] (females indistinguishable beyond this couplet)............................................................................................... 9

8 Hind tibiae without distinct ventral setae; prescutellar depression with central whitish or bluish pruinescent stripe ( Fig. 14 View FIGURES 14–15 ); male terminalia with clasping cercus broad and rounded apically ( Fig. 21 View FIGURES 20–23 )........................ R. junctus Coquillett View in CoL

- Hind tibiae with distinct ventral setae; prescutellar depression without central pale pruinescent stripe ( Fig. 15 View FIGURES 14–15 ); male terminalia with clasping cercus narrow and sickle-shaped ( Fig. 25 View FIGURES 24–28 ).................................... R. recurvatus Chillcott View in CoL

9 Male terminalia with clasping cercus long and slender anteriorly ( Fig. 22 View FIGURES 20–23 ) [Arizona].............. R. lawrencei sp. nov .

- Male terminalia with clasping cercus little prolonged anteriorly ( Figs 16, 18, 19 View FIGURES 16–19 , 30 View FIGURE 29–30 ) [ Costa Rica].................... 10

10 Male terminalia with distinctly prolonged anterior and posterior corners of clasping cercus ( Fig. 18 View FIGURES 16–19 ) R. costaricensis sp. nov.

- Male terminalia with clasping cercus at most only slightly expanded anteriorly and posteriorly ( Figs 16, 19 View FIGURES 16–19 , 30 View FIGURE 29–30 )......... 11

11 Male terminalia with clasping cercus truncate anteriorly, not projecting ( Fig. 30 View FIGURE 29–30 )..................... R. woodi sp. nov.

- Male terminalia with clasping cercus distinctly projecting anteriorly ( Figs 16, 19 View FIGURES 16–19 )................................. 12

12 Male terminalia with clasping cercus somewhat slender, longer than height of epandrium; posterior margin broadly expanded ( Fig. 19 View FIGURES 16–19 ).............................................................................. R. dedota sp. nov.

- Male terminalia with clasping cercus quadrate, not longer than height of epandrium; posterior margin narrowly expanded ( Fig. 16 View FIGURES 16–19 ).................................................................................. R. browni sp. nov.