Callomyia

Cumming, Heather J. & Wheeler, Terry A., 2016, Revision of the Nearctic species of Callomyia Meigen (Diptera: Platypezidae) and phylogeny of the genus, Zootaxa 4111 (5), pp. 501-554: 507-508

publication ID

http://doi.org/10.11646/zootaxa.4111.5.1

publication LSID

lsid:zoobank.org:pub:1286E111-8C60-47AB-B2A2-36D3BFB6CA3F

persistent identifier

http://treatment.plazi.org/id/3C7A0266-7344-9704-C2B1-2FC71EECFAC2

treatment provided by

Plazi

scientific name

Callomyia
status

 

Key to males of Callomyia  species in North America

1. Abdomen with yellow or brownish-yellow markings; if silver-blue markings present, restricted to tergite 5 ............... 2

- Abdomen dark brown to black, without yellow or brownish-yellow markings; silver-grey, silver bluish-grey, silver-blue or metallic bluish-white markings usually present.............................................................. 4

2. Yellow markings on abdomen more brownish-yellow ( Figs 9View FIGURES 9 − 14, 19View FIGURES 19 − 24); tergite 5 without silver-blue markings; hind tarsomere 1 long and narrow, slightly narrower than apical width of hind tibia; hypandrial process with long finger-like basoventral lobe ( Fig. 59View FIGURES 59 − 62).................................................................................. C. calla Kessel 

- Yellow markings on abdomen yellow to bright yellow ( Figs 7View FIGURES 4 − 8, 14View FIGURES 9 − 14, 8View FIGURES 4 − 8, 24View FIGURES 19 − 24); tergite 5 usually with lateral to anterolateral silverblue markings ( Figs 7View FIGURES 4 − 8, 14View FIGURES 9 − 14); hind tarsomere 1 thicker, subequal to or slightly broader than apical width of hind tibia; hypandrial process with shorter basoventral lobe ( Figs 58View FIGURES 55 − 58, 64View FIGURES 63 − 69)........................................................... 3

3. Lemon yellow markings on abdominal tergites 1–4 ( Figs 7View FIGURES 4 − 8, 18View FIGURES 15 − 18); sternite 8 yellow; hind tarsomere 1 length approximately 2 X width, slightly broader than apical width of hind tibia; molar-like surstylus in posterior view with ventral inner cusp broadly truncate medially ( Fig. 66View FIGURES 63 − 69)........................................................ C. browni Cumming  sp. nov.

- Yellow markings only on abdominal tergites 1–3 ( Figs 14View FIGURES 9 − 14, 24View FIGURES 19 − 24), sometimes only on tergites 1–2; sternite 8 brown to grey; hind tarsomere 1 length approximately 2.5 X width, subequal to apical width of hind tibia; molar-like surstylus in posterior view with ventral inner cusp more narrowly truncate medially ( Fig. 69View FIGURES 63 − 69).................................. C. venusta Snow 

4. Thorax partially dark brown to black with distinct metallic bluish-white or silver-blue markings on lateral portion of presutural scutum and most of postsutural scutum ( Figs 5, 8View FIGURES 4 − 8, 16, 17View FIGURES 15 − 18); abdominal markings more blue, either metallic bluish-white or silver-blue ( Figs 5, 6, 8View FIGURES 4 − 8).................................................................................. 5

- Thorax mainly dark brown to black, sometimes with silver-grey dusting on scutum ( Figs 15View FIGURES 15 − 18, 20– 23View FIGURES 19 − 24); abdominal markings more silvery, either silver-grey or silver bluish-grey ( Figs 4View FIGURES 4 − 8, 10– 13View FIGURES 9 − 14) (indistinct in some specimens)..................... 6

5. Metallic bluish-white markings on abdominal tergites 1–4 and 6 ( Figs 5, 6View FIGURES 4 − 8); legs mainly brown ( Fig. 5View FIGURES 4 − 8); halter dark brown; surstylus broadly lamellate with narrow ventral process, hypandrial process trifid ( Fig. 56View FIGURES 55 − 58)...... C. arnaudi Cumming  sp. nov.

- Silver-blue markings only on abdominal tergites 1–4 ( Fig. 8View FIGURES 4 − 8); legs mainly pale yellow with hind leg darker ( Figs 8View FIGURES 4 − 8, 17View FIGURES 15 − 18); halter yellowish-orange; surstylus bifid with long outer and inner processes, hypandrial process bifid ( Fig. 57View FIGURES 55 − 58)..... C. bertae Kessel 

6. Abdomen primarily dark brown to black with silver-grey markings (when present) restricted to tergites 1 and 2 or tergites 3 and 4 ( Figs 12, 13View FIGURES 9 − 14)..................................................................................... 7

- Abdomen partially dark brown to black with more extensive silver-grey or silver bluish-grey markings on at least tergites 1–5 ( Figs 4View FIGURES 4 − 8, 10, 11View FIGURES 9 − 14)........................................................................................ 8

7. Mid tibia with median anterodorsal seta usually present above median dorsal seta ( Fig. 49View FIGURES 49 − 54); abdomen usually with posterolateral to posteroventral silver-grey markings on tergites 3 and 4 ( Fig. 12View FIGURES 9 − 14); surstylus bifid with long outer and inner processes, hypandrial process bifid ( Fig. 62View FIGURES 59 − 62)......................................................... C. proxima Johnson 

- Mid tibia with median anterodorsal seta absent, only median dorsal seta present ( Fig. 50View FIGURES 49 − 54); abdomen with lateral silver-grey dusting on tergites 1 and 2 (rarely absent), sometimes extending to tergites 3 and 4 ( Fig. 13View FIGURES 9 − 14); surstylus molar-like, hypandrial process trifid ( Fig. 63View FIGURES 63 − 69)................................................................... C. velutina Johnson 

8. Wing clear ( Fig. 47View FIGURES 45 − 48); base of hind femur with strong stout posteroventral seta ( Fig. 53View FIGURES 49 − 54); surstylus molar-like ( Fig. 55View FIGURES 55 − 58)................................................................................... C. argentea Cumming  sp. nov.

- Wing yellowish-brown tinted ( Fig. 48View FIGURES 45 − 48); base of hind femur with long thin posteroventral seta ( Fig. 54View FIGURES 49 − 54); surstylus broadly lamellate with narrow ventral process ( Figs 60, 61View FIGURES 59 − 62)........................................................... 9

9. Halter brown to dark brown; silver markings on abdomen silver-grey ( Fig. 11View FIGURES 9 − 14); antenna with first flagellomere elongate-conical ( Fig. 42View FIGURES 41 − 44); scutum with 7–8 notopleural setae; mid tibia with median anterodorsal seta absent, only median dorsal seta present (see Fig. 50View FIGURES 49 − 54); hypandrial process trifid, with 2 apical projections and 1 basoventral lobe ( Fig. 61View FIGURES 59 − 62); epandrial apical process elongate and pointed ( Fig. 61View FIGURES 59 − 62); epandrial ventral lobe short and broad ( Fig. 61View FIGURES 59 − 62)................... C. gilloglyorum Kessel 

- Halter orange; silver markings on abdomen more silver bluish-grey ( Fig. 10View FIGURES 9 − 14); antenna with first flagellomere short-oval (see Fig. 41View FIGURES 41 − 44); scutum with 6 notopleural setae; mid tibia with median anterodorsal seta usually present above median dorsal seta (see Fig. 49View FIGURES 49 − 54); hypandrial process simple, without projections ( Fig. 60View FIGURES 59 − 62); epandrial apical process short and broad ( Fig. 60View FIGURES 59 − 62); epandrial ventral lobe long and narrow, curved posteriorly ( Fig. 60View FIGURES 59 − 62)................................ C. corvina Kessel