Neurigona Rondani, 1856

Silva, Paulo Cesar Da, Capellari, Renato S. & Oliveira, Sarah S., 2022, Three new species of the Neurigona orbicularis species group from Brazil (Diptera: Dolichopodidae), Zootaxa 5093 (5), pp. 547-558 : 548-549

publication ID	https://doi.org/ 10.11646/zootaxa.5093.5.4
publication LSID	lsid:zoobank.org:pub:298BE467-CA09-4E35-A748-E0AF6DB314A7
DOI	https://doi.org/10.5281/zenodo.6302224
persistent identifier	https://treatment.plazi.org/id/038B87DE-0B6A-FFB2-FF18-B294FA4222A2
treatment provided by	Plazi
scientific name	Neurigona Rondani
status

Treatment

Neurigona Rondani View in CoL

Neurigona Rondani, 1856: 142 View in CoL . Type species: Musca quadrifasciata Fabricius, 1781: 448 (by original designation).

Saucropus Loew, 1857: 41 . Unjustified new name for Neurigona View in CoL .

Key to males of the orbicularis -group (modified from Naglis 2003)

1 Postpedicel small and about as wide as pedicel; acrostichal setae present in two rows; 6 pairs of dorsocentral setae; tibia III with 1–2 strong anterodorsal setae in addition to dorsal setae; abdominal sternite 5 with ventral cuticular projection; surstyli generally ochreous-yellow (except N. lopesi View in CoL sp. nov., that has surstyli yellow only at tip); dorsal lobe of surstyli with U-shaped or cup-like apical appendage; hypandrium with pair of lateral arms......................... N. orbicularis View in CoL -group … 2

- Without above combination of characters....................................... other species groups of Neurigona View in CoL

2 Tibia III with strong yellow dorsal seta at middle, with anterodorsal seta at basal 1/4............................... 3

- Tibia III without yellow dorsal seta at middle, generally with two anterodorsal setae near basal 1/5 and 3/5 (except N. yacambo View in CoL with only basal seta).................................................................................. 4

3 Male hypopygium ( Figs 4 View FIGURES 1–5 , 13–19 View FIGURES 13–19 ) with long cup-shaped projection on dorsal lobe of surstylus ( Fig. 15 View FIGURES 13–19 ) [ Brazil: Mato Grosso do Sul and São Paulo; Paraguay]........................................................ N. orbicularis Becker View in CoL

- Male hypopygium ( Figs 2 View FIGURES 1–5 , 6–12 View FIGURES 6–12 ) with dorsal lobe of surstylus with short, rugose projection at apex, without long cup-shaped projection ( Fig. 8 View FIGURES 6–12 ) [ Brazil: Tocantins and Goiás]............................................... N. lopesi View in CoL sp. nov .

4 Eyes touching on face or nearly so (distance between eyes narrower than ocellus width)............................. 5

- Eyes distinctly separated on face (distance between eyes at least 2 times ocellus width)............................. 7

5 Tibia III with 1 strong anterodorsal seta at basal 1/4; ventral lobe of surstylus with notch at ventral margin and noticeably bifurcate at apex ( Naglis 2003, fig. 12) [ Venezuela]........................................... N. yacambo Naglis View in CoL

- Tibia III with two anterodorsal setae near basal 1/5 and 3/5; ventral lobe of surstylus without notch at ventral margin and not noticeably bifurcate at apex............................................................................. 6

6 Male hypopygium ( Figs 20–25 View FIGURES 20–25 ): dorsal lobe of surstylus ( Fig. 22 View FIGURES 20–25 ) elongate, with apical grooves; apicolateral epandrial lobe ( Fig. 23 View FIGURES 20–25 ) short, with unmodified setae; basolateral epandrial lobe absent; cercus ( Fig. 25 View FIGURES 20–25 ) with projection at base and elongate, curved seta at middle; hypandrium ( Fig. 24 View FIGURES 20–25 ) without lateral projections [ Brazil: Mato Grosso]....... N. papaveroi View in CoL sp. nov .

- Male hypopygium ( Figs 5 View FIGURES 1–5 , 26–32 View FIGURES 26–32 ): dorsal lobe of surstylus ( Fig. 28 View FIGURES 26–32 ) with projection above, bearing microtrichia at apex and short cup-like appendage below; apicolateral epandrial lobe ( Fig. 29 View FIGURES 26–32 ) four-branched: one branch bearing two simple setae, one with branched modified seta, one inner delicate branch with several hairs; basolateral epandrial lobe ( Fig. 30 View FIGURES 26–32 ) bifurcated, dorsal branch thinner; hypandrium ( Fig. 31 View FIGURES 26–32 ) with two lateral projections and one anterodorsal projection [ Brazil: Rio de Janeiro]....................................................................................... N. tingua View in CoL sp. nov.

7 Ventral lobe of surstylus apically hook-shaped and downcurved, bearing straight, thin apical seta ( Naglis 2003, fig. 13); tibia II with 3 posterodorsal setae [ Costa Rica]....................................................... N. pitilla Naglis View in CoL

- Ventral lobe of surstylus apically not hook-shaped, with stout triangular or rectangular tip ( Naglis 2003, figs 10, 11); tibia II with 2 or 3 posterodorsal setae.......................................................................... 8

8 Ventral lobe of surstylus with rectangular tip ( Naglis 2003, fig. 10); hypandrial arms equal in length; tibia II with 3 posterodorsal setae; first tarsomere II with distinct anterodorsal seta; face with grey pruinosity [ Guyana; Peru]..................................................................................................... N. grossicauda Van Duzee View in CoL

- Ventral lobe of surstylus with triangular tip ( Naglis 2003, fig. 11); hypandrium with left arm distinctly longer than right arm; tibia II with 2 posterodorsal setae; first tarsomere II without distinct anterodorsal seta; face with ochreous pruinosity [ Costa Rica]............................................................................. N. guanacasta Naglis View in CoL