Chaetocnemistoptera formosa ( Borgmeier, 1961 )

Ament, Danilo César, 2014, Taxonomic revision of the genus Chaetocnemistoptera Borgmeier (Diptera: Phoridae), with the description of five new species, Zootaxa 3753 (4), pp. 301-322 : 305-306

Chaetocnemistoptera formosa ( Borgmeier, 1961)

( Figs 1 , 13, 19, 21 , 23 , 31 , 43–46 )

Chaetopleurophora formosa Borgmeier, 1961: 6 ; 1968: 13; 1969: 36. Chaetocnemistoptera formosa ; Brown, 1992a: 52.

Diagnosis. Scutum, scutellum and pleural regions yellowish-brown; hind tibia with 3–5 posterodorsal setae; left epandrial process trilobed at apex.

Material examined. Holotype ♀, PUERTO RICO: San José: Airport, III.1945, Borgmeier col. ( MZSP). Additional material: 1♂, PUERTO RICO: El Verde: Barrio Rio Grande, G.E. Drewery, ( MZSP); 3♂, US VIRGIN ISLANDS: St. Thomas Estate Botany Bay, 18.35ºN 64.92ºW, vii– 15.ix.1994, M. Ivie et al. col. ( LACM); 1♂, BRITISH VIRGIN ISLANDS: Guana Island: Long Man’s Point, 18.49ºN 64.58ºW, 20–25.iv.1993, Malaise trap, R. Snelling col. ( LACM).

Hypopygium description ( Figs. 43–46 ). Left epandrial process large, with three apical setose lobes. Hypandrium bilobed, with triangular protuberances at apex. Hypoproct with four setae.

Geographical distribution. Puerto Rico and close islands ( Fig. 72 ).

Comments. Males can be associated with the female holotype of C. formosa (as in Borgmeier, 1969) by the presence of the ventral interfrontal setae shifted near to the eye margin, R2+3 complete, 3–5 hind tibia posterodorsal setae and foretibia dorsal seta at basal third.

The close relationship of C. formosa , C. palpalis and C. nigroscutellata is suggested by the probably apomorphic characteristics: ventral interfrontal setae near the eye margin, oval patch of differentiated setulae in the fore and mid femur, hind femur with ventral row of strong setulae and R2+3 complete.

Figures

FIGURE 72. Chaetocnemistoptera species distribution map. Square represent holotype and circles paratypes and additional material.

FIGURES 1 – 4. Chaetocnemistoptera holotype habitus. 1. C. formosa; 2. C. nigroscutellata; 3. C. palpalis; 4. C. semifurcata.

FIGURES 10 – 22. Chaetocnemistoptera structures. 10. C. nigroscutellata frons; 11. C. lobata, sp. nov. frons; 12. C. trichopoda head in lateral view; 13. C. formosa forefemur; 14. C. nigroscutellata forefemur; 15. C. palpalis holotype forefemur; 16. C. palpalis additional material forefemur; 17. C. palpalis midfemur dorsal view; 18. C. palpalis holotype forefemur posterior view; 19. C. formosa midtibia; 20. C. palpalis midtibia; 21. C. formosa hind tibia; 22. C. palpalis hind tibia.

FIGURES 23 – 30. Chaetocnemistoptera wings. 23. C. formosa; 24. C. nigroscutellata; 25. C. palpalis; 26. C. lobata, sp. nov.; 27. C. magdalena, sp. nov.; 28. C. phaeonota, sp. nov.; 29. C. pityropyga, sp. nov.; 30. C. trichopoda, sp. nov.

FIGURES 31 – 38. Chaetocnemistoptera hind femur. 31. C. formosa; 32. C. palpalis; 33 – 34. C. lobata, sp. nov.; 35 – 36. C. magdalena, sp. nov.; 37 – 38. C. phaeonota, sp. nov. Abbreviations: pvgs, posteroventral group of setulae.

FIGURES 43 – 46. Chaetocnemistoptera formosa hypopygium, 43. Dorsal, 44. Ventral, 45. Left lateral, 46. Right lateral. Abbreviations: cerc, cercus; ep, epandrium; hyp, hypandrium; hyprct, hypoproct; lep, left epandrial process.