| abstract
| - Megachile (Ptilosarus) Mitchell 1943b: 667. Type species: Megachile bertonii Schrottky. Original designation. Cressoniella (Ptilosarus) Mitchell 1980: 63. This subgenus of 15 species ranges from Mexico to Paraguay. 1. Megachile (Ptilosarus) acerba Mitchell Megachile acerba Mitchell 1930: 266-267. Male. Type locality: Chapada [dos Guimarães, MT], Brazil, December (H. H. Smith). Type repository: ANSP 4132. Examined. Megachile (Ptilosarus) acerba : Mitchell 1943b: 668. ADDITIONAL REFERENCE. Michener 1954: 102 (D, L). DISTRIBUTION. BRAZIL: MT. PANAMA: Panamá- Pueblo Nuevo. LIFE HISTORY. In Panamá adults fly in June. 2. Megachile (Ptilosarus) ardua Mitchell Megachile (Ptilosarus) ardua Mitchell 1930: 268. Male. Type locality: Chapada [dos Guimarães, MT], Brazil (H. H. Smith). Type repository: ANSP 4124. Examined. Megachile (Ptilosarus) ardua : Raw 2002 # 7: 32. ADDITIONAL REFERENCE. Silveira et al 2002: 214 (D). DISTRIBUTION. BRAZIL: MT; RS. 3. Megachile (Ptilosarus) aurantipennis Cockerell Megachile aurantipennis Cockerell 1912b: 26-27. Male. Type locality: Quirigua, Guatemala, 11 February 1912 (W. P. Cockerell). Type repository: USNM 23282. Examined. Megachile (Ptilosarus) aurantipennis : Mitchell 1943b: 668. ADDITIONAL REFERENCES. Cockerell 1927a: 14 (D); 1932: 13 (K). DISTRIBUTION. GUATEMALA. 4. Megachile (Ptilosarus) bertonii Schrottky Megachile bertonii Schrottky 1908: 235. Female. Type locality: Puerto Bertoni, Paraguay. Type repository: MZSP ? Megachile bertoni Mitchell 1928: 335 (misspelling) (M). Megachile (Ptilosarus) bertonii : Mitchell 1943b: 667. Silveira et al 2002: 214 (D). Cressoniella (Ptilosarus) bertonii : Mitchell 1980: 63. ADDITIONAL REFERENCES. Schrottky 1913a: 146 (K), 198-199 (R-FM); Mitchell 1928: 335 (D); Moure 1942: 310 (D). DISTRIBUTION. BOLIVIA: Santa Cruz- Buenavista. BRAZIL: MG; MS- Salobra; MT- Chapada dos Guimarães; PR- Guaicurús, Majoli; SP. PARAGUAY. MORPHOLOGY. Intersex. 5. Megachile (Ptilosarus) bidentis Cockerell Megachile bidentis Cockerell 1896: 288-289. Male (not female). Type locality: San Rafael, Vera Cruz, Mexico (C. H. T. Townsend). Type repository: AMNH. Examined. In the description Cockerell mentions the presence of a scopa, but the specific name suggests that he examined a male - as the type is. Megachile (Ptilosarus) bidentis Mitchell 1943b: 668. DISTRIBUTION. MEXICO: VC. FLOWERS. Bidens. NESTING. March. 6. Megachile (Ptilosarus) blanda Mitchell Megachile blanda Mitchell 1930: 247-248. Male. Type locality: Chapada [dos Guimarães, MT], Brazil (H. H. Smith). Type repository: ANSP 4134. Examined. (Not M. (Eutricharaea) blanda Rebmann 1967: 44. Luxor, Egypt) Megachile (Ptilosarus) blanda : Raw 2002 # 7: 32. DISTRIBUTION. BRAZIL: MT. 7. Megachile (Ptilosarus) cara Mitchell Megachile cara Mitchell 1930: 263-264. Male. Type locality: Buenavista, Bolivia. Type repository: Meyer. Megachile (Ptilosarus) cara : Mitchell 1943b: 668. DISTRIBUTION. BOLIVIA. 8. Megachile (Ptilosarus) diodontura Cockerell Megachile diodontura Cockerell 1922a: 365-366. Male. Type locality: Zaruma, Ecuador, October 1915 (F. W. Rohwer). Type repository: AMNH. Examined. Megachile (Ptilosarus) diodontura : Raw 2002 # 7: 32. DISTRIBUTION. ECUADOR. 9. Megachile (Ptilosarus) leucostomella Cockerell Megachile leucostomella Cockerell 1927a: 20. Male. Type locality: Huachi, Beni, Bolivia, September (W. M. Mann). Type repository: USNM 29089. Examined. Megachile (Ptilosarus) leucostomella : Raw 2002 # 7: 32. ADDITIONAL REFERENCES. Cockerell 1927a: 13 (K); Mitchell 1930: 266 (D). DISTRIBUTION. BOLIVIA: Beni; Santa Cruz- Buenavista. 10. Megachile (Ptilosarus) microdontura Cockerell Megachile microdontura Cockerell 1927a: 19. Male. Type locality: Rurrenabaque, Bolivia, October (W. M. Mann). Type repository: USNM 29087. Examined. Megachile (Ptilosarus) microdontura : Mitchell 1943b: 668. ADDITIONAL REFERENCES. Cockerell 1927a: 13 (K); Silveira et al 2002: 214 (D). DISTRIBUTION. BOLIVIA. BRAZIL: MT. 11. Megachile (Ptilosarus) microsoma Cockerell Megachile microsoma Cockerell 1912d: 55-56. Male. Type locality: Porto Velho, Rio Madeira, Brazil (Mann & Baker). Type repository: AMNH. Examined. Megachile (Ptilosarus) microsoma : Mitchell 1943b: 668. ADDITIONAL REFERENCES. Cockerell 1912c: 487 (D); 1927a: 13-14 (D, K); Mitchell 1930: 266 (D); Moure 1942: 310 (D). DISTRIBUTION. BOLIVIA: Beni- Esperanza, Rio Beni, Rurrenabaque; Tumupasa. BRAZIL: AM- Manaus; MT- Chapada dos Guimarães; PA- Santarém; PR- Castelhanos; RO- Porto Velho. 12. Megachile (Ptilosarus) mobilis Mitchell Megachile mobilis Mitchell 1930: 264-265. Male. Type locality: Buenavista, Bolivia. Type repository: Meyer. Megachile (Ptilosarus) mobilis : Raw 2002 # 7: 32. DISTRIBUTION. BOLIVIA. 13. Megachile (Ptilosarus) oblita Vachal Megachile oblita Vachal 1908: 232-233. Female. Type locality: Mapirí, Bolivia. Type repository: Vachal Collection, MNHN. Megachile (Ptilosarus) oblita : Raw 2002 # 7:32. DISTRIBUTION. BOLIVIA. 14. Megachile (Ptilosarus) pulchriventris Cockerell Megachile pulchriventris Cockerell 1923a: 454. Female. Type locality: Issororo, NWD, British Guiana, Dec 1918 (G. E. Bodkin). Type repository: NHML 17a2463. Examined. Megachile (Ptilosarus) pulchriventris Mitchell 1943b: 668. DISTRIBUTION. GUYANA. 15. Megachile (Ptilosarus) xanthura Spinola Megachile xanthura Spinola 1853: 86. Sex not indicated. Type locality: Para ? Brazil. Type repository: IZUT. Megachile (Ptilosarus) xanthura : Raw 2002 # 7: 32. ADDITIONAL REFERENCES. Vachal 1908: 244 (D, K); Strand 1909: 234 (D); Schrottky 1913a: 144 (K), 186-187 (R-F); Friese 1923: 5 (D); Silveira et al 2002: 214 (D). DISTRIBUTION. BOLIVIA: Mapirí. BRAZIL: AM- Manaus; PA. ECUADOR. FRENCH GUIANA. PARAGUAY.
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