Cairnsimyia
Creators: name: Mcalpine, David K.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Heleomyzidae
Cairnsimyia

description: Key to species of Cairnsimyia
1. Ocellar and humeral bristles minute or absent; anterior marginal zone of postfrons precipitous; prelabrum with median process or prominence; SE New Guinea, N Queensland.............................................. C. aroana McAlpine
- Ocellar and humeral bristles large; anterior marginal zone of postfrons not steeply sloped; prelabrum without process or distinct prominence..................................................................................... 2
2. Fronto-orbital bristles two; all femora with thickened spine-like ventral bristles; male: pregonite large with one or two terminal spines.............................................................................................. 3
- Only one fronto-orbital bristle present; femora without spinescent ventral bristles; male: pregonite undeveloped.......... 5
3. Second costal cell with two or three brown spots; male: surstylus somewhat narrowed basally, with produced anterodistal angle not recurved; S Queensland, New South Wales, Victoria, Tasmania, South Australia ................ C. robusta (Walker)
- Second costal cell without spots; male: surstylus not as above.................................................. 4
4. Sternopleuron (katepisternum) with large bare, shining posterior zone; all tibiae with brown preapical zone and substantial yellow apical zone; tarsal segment 5 largely tawny; male: surstylus very attenuated basally, with produced anterodistal angle recurved; S Queensland, New South Wales, Tasmania, Western Australia ........................ C. excavata McAlpine
- Sternopleuron almost entirely dull, pruinescent; all tibiae with substantial brown apical zone; tarsal segment 5 black (brown in faded specimens); male: surstylus not so much attenuated basally, broadened and elbowed before middle, with slender distal part directed anteriorly; New South Wales ............................................... C. sydneiensis McAlpine
5. Prescutellar acrostichal bristle absent..................................................................... 6
- Prescutellar acrostichal bristle present..................................................................... 8
6. Antennal segment 3 not longer than deep; fore tarsus entirely orange-tawny; mid femur with group of moderately stout black anterior bristles near and beyond mid-length; New South Wales .................................. C. englishae n. sp.
- Antennal segment 3 horizontally ovoid; fore tarsus orange-tawny basally, with segments 2 to 5 largely dark brown; mid femur with only long, fine undifferentiated setulae on anterior surface................................................ 7
7. Arista somewhat thickened, pale, with dense white pubescence; W and E New Guinea ............. C. inscripta (Walker)
- Arista slender, brown, with very inconspicuous pubescence; E New Guinea ...................... C. crosskeyi McAlpine
8. Cheek region with many dark brown spots of various sizes, each at base of a bristle or setula; postvertical bristle usually c. as large as fronto-orbital bristle; male: surstylus broadly obliquely oval; Queensland, New South Wales. C. verticalis McAlpine
- Cheek region with few or no spots; postvertical bristle very small or absent; male: surstylus not as above................ 9
9. Mesoscutum pale greyish, with isolated reddish brown marks; sternopleuron dark reddish brown, contrasting with very palepruinescent mesopleuron; male: surstylus narrowly elongate, not broadened distally (Fig. 8); N Queensland..................................................................................................... C. collessi n. sp.
- Mesoscutum predominantly reddish brown, with pale grey to yellowish markings; sternopleuron not conspicuously dark; male: surstylus not as above................................................................................ 10
10. Cheek region with reddish brown spot immediately behind vibrissa; postfrons with very broad pale greyish- to yellowish-pruinescent anterolateral zone on each side; male: surstylus broadly spatulate, with rounded distal margin; S Queensland, New South Wales, Victoria.................................................................. C. uniseta McAlpine
- Cheek region without such spot; postfrons anterolaterally with only narrow, marginal pale-pruinescent zone; male: surstylus very broadly subtriangular, with broad, slightly sinuate distal margin; Queensland, N New South Wales ..................................................................................................... C. cavifrons Malloch
description: Published as part of Mcalpine, David K., 2013, Supplementary descriptions of Australian Rhinotorini (Diptera: Heteromyzidae), pp. 130-138 in Zootaxa 3680 (1) on page 132, DOI: 10.11646/zootaxa.3680.1.9, http://zenodo.org/record/216645