Drosophila repleta

Heed, William B. & Castrezana, Sergio, 2008, Drosophila sonorae (Diptera, Drosophilidae), a new species in the repleta species group from Mexico, Zootaxa 1725, pp. 27-36 : 33-34

Key to the Drosophila repleta species group in Sonora, Mexico

1a) Lateral margin of tergites almost completely covered by forward expansions of darker apical bands. They are of solid color without complete interruptions and mostly without lighter markings (windows) within them ........................................................................................................................................................... 2

1b) Lateral margin of tergites with a pattern of light and dark markings either completely or incompletely separated from the dorsomedial regions of the tergites. These patterns generally very species specific ....... 7

2a) Males with recurved, medially-directed setae on foretarsus, each about twice as long as the width of the tarsus .......................................................................................................................................................... 3

2b) Setae on foretarsus short, less than width of segment, and not recurved ................................................... 4

3a) Vibrissa long, greater than 3 times length of second oral setae; ground color of head, thorax and tergites

black; apical section on first costa segment is jet-black ........... D. nigrohydei Patterson & Wheeler, 1942 3b) Vibrissa short, less than 2 times length of first genal seta; ground color of head and thorax brown to black; brownish-black abdominal bands widely separated at mid-dorsal line; apical section of first costa segment is not darkened ................................................................................ D. bifurca Patterson & Wheeler, 1942 4a) Setae on frons inserted randomly, no regular V-shaped pattern apparent; body brownish ........................ 5

4b) Frons not as above; body blackish .............................................................................................................. 6

5a) Epandrium unicolorous yellow-brown; prensisetae shaped like a parenthesis “()”....................................... ................................................................................................................. D. eremophila Wasserman, 1962

5b) Inner margin of epandrium brownish-red; the epandrium and prensisetae shapes like a double parenthe- sis”(())” ................................................................................................................... D. mettleri Heed, 1977

6a) Costal index about 3.0; second oral seta about 1/2 length of vibrissa .......................................................... ............................................................................................. D. nigrospiracul a Patterson & Wheeler, 1942

6b) Costal index about 3.8; Second oral seta about 1/3 length of the vibrissa .......... D. hydei Sturtevant, 1921

7a) Forecoxa darker than remainder of leg.......................................................................................................8

7b) Forecoxa of the same color as remainder of leg ........................................................................................ 9

8a) Posterior crossvein clouded ..................................................... D. nigricruria Patterson & Mainland, 1943

8b) Posterior crossveins no clouded ..................................................................... D. repleta Woollaston, 1858

9a) The color in the apex of the first costa segment is the same as the rest of the segment .............................. ................................................................................................... D. hamatofila Patterson & Wheeler, 1942

9b) Apex of first costal vein blackish ............................................................................................................. 10

10a) Distinct ventroapical band on femora and tibia ..................................................................................... 11

10b) Ventroapical band, if present, indistinct ................................................................................................. 14

11a) In males, the lateral bar on tergite 6th merges with the apical band but it doesn’t cover all the lateral area, a clear window is visible........................................................................................................................... 12

11b) In males, almost all the lateral area on tergite 6th is covered by the fusion of the margin on lateral area with the apical band anteriorly ................................................................................................................ 13

12a) Eyes with distinctly iridescent highlights; basal median portions of 2nd and 3rd tergites with a slightly sil- very reflection; testes yellowish ................................................ D. meridiana Patterson & Wheeler, 1942

12b) No highlights on eyes; triangular areas in posterolateral corners about the same shade or lighter than api- cal bands on median portions of tergites; testes deep orange ............ D. aldrichi Patterson & Crow, 1940

13a) The apical band on the femora is also visible on the dorsal part; femora band covers about a 1/3 of the femora length ................................................................................................... D. spenceri Patterson 1943

13b) The apical band on the femora is faded and narrow on the dorsal part especially in forelegs ................... .................................................................................................... D. sonorae Heed & Castrezana sp. novo.

14a) Posterior crossveins clouded .................................................................................................................. 15

14b) Posterior crossveins no clouded ............................................................................................................. 16

15a) Mesonotum light grey; body slightly elongated; Bands present on base of tarsi......................................... .................................................................................................. D. longicornis Patterson & Wheeler, 1942

15b) Mesonotum brown yellowish; body regular; no bands on tarsi................................................................... ............................................................................................... D. navojoa Ruiz, Heed & Wasserman, 1990

16a) Tergites with very faint diffuse apical band .......................... D. mercatorum Patterson & Wheeler, 1942

16b) Tergites with some distinct apical bands ................................................................................................ 17

17a) Spots on posterolateral corner of lateral areas are irregularly triangular in shape; mesonotum dark grayish brown; on surstylus, inner setae about three times the length of prensisetae; both group of setae shown a “7” shape on genitalia .......................................................... D. arizonae Ruiz, Heed & Wasserman, 1990

17b) Lateral areas with diffused dark margins, especially on tergite 5th and 6th; mesonotum dark light brown; normal size inner setae ............................................................................... D. mojavensis Patterson, 1940 .