48 MISC. PUBLICATION 631, U. S. DEPT. OF AGRICULTURE 



4. Antennae salmon to red ; the middle femur with a distinct comb of closely 



set bristles below ruficbrnis (Fabricius) 



Antennae black ; middle femur with only widely spaced bristles 5 



5. Rows of frontals parallel, not diverging below (as in striata, fig. 17) 



Vherminieri (Robineau-Desvoidy) 

 Rows of frontals distinctly diverging below (as in haemorrhoidalis, fig. 

 18) 6 



6. Asiatic and Australasian species ; genital segments usually brownish, 



sometimes black or reddish peregrina Robineau-Desvoidy 



South African species; genital segments red nodosa Engel 



7. Second genital segment black or blackish 8 



Second genital segment largely or wholly red or yellow 11 



8. Propleura abundantly haired froggatti Taylor 



Propleura bare 9 



9. Second abdominal segment with a pair of strong marginal bristles 



carnaria (Linnaeus) 

 Second abdominal segment without marginal bristles 10 



10. Bristles of parafacials strong; setulae of cheeks entirely black 



tuberosa Pandelle 

 ha r pax Pandelle 

 Bristles of parafacials weak ; setulae of cheeks becoming pale posteri- 

 orly albiceps Meigen 



miser a Walker 



11. First genital segment black, with gray pollen 12 



First genital segment yellow or red 13 



12. Palpi black ; second genital segment narrowly black apically 



crassipalpis Macquart 

 Palpi yellow; genitalia entirely yellow ■__ hirtipes Wiedemann 



13. First genital segment with strong marginal hairs or bristles 14 



First genital segment without marginal bristles, the apical hairs of 



ordinary strength 15 



14. Prescutellar acrosticals strong barbata Thomson 



Prescutellar acrosticals weak or absent haemorrhoidalis (Fallen) 



15. Prescutellar acrosticals strong _ exuberans Pandelle 



Prescutellar acrosticals weak or absent beckeri Villeneuve 



SARCOPHAGA L'HERMINIERI (Robineau-Desvoidy) 



Synonyms. — Sarcophaga communis (Parker) ; Sareophaga pallinervis Thom- 

 son; Ravinia Vherminieri (Robineau-Desvoidy); Eurarinia Vherminieri (Rob- 

 ineau-Desvoidy). 



Geographical Distribution. — Nearctic Region : Alaska, North Scotia, New 

 Brunswick, Quebec, Ontario, Manitoba, Saskatchewan, Alberta, British Columbia, 

 Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New 

 York, New Jersey, Pennsylvania, Maryland, District of Columbia, Virginia, 

 North Carolina, Georgia, Florida, Mississippi, Ohio, Michigan, Indiana, Illinois, 

 Iowa, Missouri, North Dakota, South Dakota, Kansas, Arkansas, Louisiana, Texas, 

 Montana, Idaho, Wyoming, Colorado, Utah, New Mexico, Arizona, Washington, 

 Oregon, California. Neotropical Region : Mexico, Yucatan, Guatemala, Bermuda, 

 Ecuador, Bolivia, Argentina. Australian Region : Hawaiian Islands. 



Pathogenesis. — This species has been recorded from three cases of 

 supposed intestinal myiasis in Texas. It breeds in excrement, includ- 

 ing that of man, and the above-mentioned records were probably based 

 on material received from subsequently contaminated stools. 



SARCOPHAGA SARRACENIAE Riley 



Pathogenesis. — One case of supposed intestinal myiasis is on record, 

 but the known food habits of this insect suggest that this record was 

 based on a misidentification. The species was commonly misidenti- 

 fied in the literature prior to 1916. 



