Thread subject: Diptera.info :: Canacidae, Polynesia => Nocticanace peculiaris
Posted by basti_st on 10-03-2022 07:15
#1
I collected this fly at the beach today and identified it as Ephydridae, probably genus
Paralimna, but I am not entirely certain about my identification, so I would be happy about any input to this fly. Thanks!
Edited by basti_st on 13-03-2022 06:29
Posted by basti_st on 10-03-2022 07:32
#2
Lateral
Posted by John Carr on 10-03-2022 10:07
#3
This is not
Paralimna, which has bristles on the mid tibia, hairs on the parafacial, and a haired arista. In the Ephydridae lateroclinate fronto-orbital setae are found in subfamily Ephydrinae, but the face of your fly is not swollen and haired like typical Ephydrinae.
The course of the subcosta makes me think of Agromyzinae. Species of that subfamily can be dark metallic with contrasting yellow halteres.
Posted by Tony Irwin on 10-03-2022 10:20
#4
The face and ovipositor suggest Canacidae to me.
Posted by basti_st on 10-03-2022 18:49
#5
Very helpful, thanks!
Dasyrhicnoessa (subfamily Tethininae) and
Nocticanace (subfamily Canacinae) are both known from Eastern Polynesia. Might this fly be either of these two genera?
Edited by basti_st on 10-03-2022 19:10
Posted by Tony Irwin on 10-03-2022 19:07
#6
I would say
Nocticanace, or something very close.
Edited by Tony Irwin on 10-03-2022 20:40
Posted by basti_st on 10-03-2022 19:12
#7
Description and genitalia illustrations of
Nocticanace peculiaris in 'Wirth 1951 a revision of the dipterous family Canacidae' would fit to the collected species, incl. pale yellow halteres (mentioned by John above).
This species is also known from Eastern Polynesia, but not recorded in the Society Islands
Edited by basti_st on 10-03-2022 19:13
Posted by Tony Irwin on 10-03-2022 20:49
#8
Yes, that looks like a good match.