Placopsidella grandis, from the National Museum of Natural History.

Belongs within: Ephydroidea.

The Gymnomyzinae are a group of shore flies with pectinate aristae and small prescutellar acrostichal setae (Mathis 2010).

Characters (from Mathis 2010): Arista pectinate; reclinate fronto-orbital seta usually inserted slightly anterior to larger, proclinate fronto-orbital seta; median facial area and lower facial margin without setae; facial setae inserted in more or less vertical series, parallel with parafacial setae; prescutellar acrostichal setae small (about one-half to two-thirds length of posterior dorsocentral seta), inserted close together (distance between about one-half that between either prescutellar and posterior dorsocentral seta on the same side), behind or aligned with intra-alar seta.

<==Gymnomyzinae M10
    |--Ochthera Latreille 1802 L02 [Ochtherini M10]
    |    |--O. manicata [=Musca manicata] L02
    |    `--O. mantis [=Musca mantis] L02
    |--Hecamede [Hecamedini] M10
    |    |--H. albicans M10
    |    `--H. brasiliensis M10
    |--Atissini M10
    |    |--Ptilomyia mabelae M10
    |    `--Atissa M10
    |         |--A. atlantica M10
    |         `--A. pygmaea WMV87
    |--Gastropsini M10
    |    |--Beckeriella M10
    |    `--Gastrops M10
    |         |--G. nebulosus M10
    |         `--G. niger M10
    |--Discocerinini M10
    |    |--Discocerina obscurella M10
    |    |--Gymnoclasiopa M10
    |    |--Pectinifer aeneus M10
    |    |--Ditrichophora M10
    |    |--Polytrichophora agens M10
    |    |--Hydrochasma leucoproctum M10
    |    |--Lamproclasiopa M10
    |    `--Orasiopa mera M10
    |--Lipochaetini M10
    |    |--Glenanthe interior M10
    |    |--Paraglenanthe bahamensis M10, WMV87
    |    |--Lipochaeta M10
    |    |    |--L. ranica M10
    |    |    `--L. slossonae M10
    |    |--Diphuia M10
    |    |    |--D. anomala M10
    |    |    `--D. nitida M10
    |    `--Allotrichoma M10
    |         |--A. (Pseudohecamede) abdominale M10 [=Pseudohecamede abdominalis WMV87]
    |         `--A. simplex M10
    `--Gymnomyzini M10
         |--Cerometopum lacunosum M10
         |--Mosillus M10
         |    |--M. stegmaieri M10
         |    `--M. tibialis M10
         |--Athyroglossa M10
         |    |--A. glabra M10
         |    |--A. glaphyropus M10
         |    `--A. granulosa M10
         `--Placopsidella M10
              |--P. cynocephala M10
              |--P. grandis M10
              `--P. marquesana M10

*Type species of generic name indicated


[L02] Latreille, P. A. 1802. Histoire Naturelle, générale et particulière des crustacés et des insectes vol. 3. Familles naturelles des genres. F. Dufart: Paris.

[M10] Mathis, W. N. 2010. Ephydridae (shore flies). In: Brown, B. V., A. Borkent, J. M. Cumming, D. M. Wood, N. E. Woodley & M. A. Zumbado (eds) Manual of Central American Diptera vol. 2 pp. 1211–1233. NRC Research Press: Ottawa.

[WMV87] Wirth, W. W., W. N. Mathis & J. R. Vockeroth. 1987. Ephydridae. In: McAlpine, J. F. (ed.) Manual of Nearctic Diptera vol. 2 pp. 1027–1047. Research Branch, Agriculture Canada.

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