Andiorrhinus (Amazonidrilus)

Feijoo, Alexander, Brown, George G. & James, Samuel W., 2017, New species of Andiorrhinus Cognetti, 1908 (Oligochaeta: Rhinodrilidae) from Venezuela and Brazil, Zootaxa 4363 (1), pp. 55-78 : 75

Key to Andiorrhinus (Amazonidrilus) species

1a. Two pairs of spermathecae pores in 6/7–7/8....................................... aberratus Zicsi & Csuzdi, 1999

1b. Two pairs of spermathecae pores in 7/8–8/9................................................................ 2

2a. Spermathecal pores aligned with setae cd................................................. bolivianus Zicsi, 1995

2b. Spermathecal pores aligned with setae ab.................................................................. 3

3a. Spermatheca with ovoid ampulla, 1.5 times larger than duct............................. amazonius Michaelsen, 1918

3b. Spermatheca with sac-shaped ampulla, short duct with seminal chambers......................................... 4 4a. Male pores in 21/22 side to the line of mushrooms b.................................... motto Righi & Araujo, 1999 4b. Male pores in 21...................................................................................... 9 4c. Male pores in 21..................................................................................... 13 5a. Spermathecal pores aligned with setae a............................................... duidanus Michaelsen, 1936 5b. Spermathecal pores aligned with setae c.................................................................... 6 6a. Male pores in 17/18....................................................................... karinae sp. nov. 6b. Male pores in 18...................................................................................... 7 7a. Spermatheca with piriform ampulla, duplicate seminal chambers at sides....................... duseni Michaelsen, 1918 7b. Spermatheca with atrophied or absent ampulla, duct subdivided in numerous, intercommunicated seminal chambers....... 8 8a. Calciferous gland with long duct and cylindrical body ending in small appendage............. holmgreni Michaelsen, 1918 8b. U- or J-shaped calciferous glands with absence of proximal third................................................ 9 9a. Septa in 6/7– 9/10 a bit thicker, the rest fragile.................................... mandauaca Righi & Nemeth, 1983 9b. Septa in 6/7–19/20 very strong, conic-shaped and intertwined................................................. 10 10a. Clitellum in 17– 29...................................................................... tukuko Righi, 1995 10b. Clitellum in 17–25, 26................................................................................. 11 11a. Esophagus-intestine transition in segment 27............................................. torquemadai Righi, 1984 11b. Esophagus-intestine transition in segment 25............................................................... 12 12a. Tubercula pubertatis between ½19– ½23............................................. tarumanis Righi et al., 1976 12b. Tubercula pubertatis between ½ 20– ½23.................................................................. 13 13a. Septa in 6/7–13/14 fine and thin, while those in 12/13–15/16 thick and muscular........... rondoniensis Righi et al., 1986 13b. Very fine and slightly thickened septa..................................................................... 14 14a. Setae with U-shaped ornamentation.................................................. planaria Michaelsen, 1934 14b. Ventral setae of 20–23 or 19–23 transformed as genital setae.................................................. 15 15a. Tubercula pubertatis with rectangular area in ½19–22, ½23...................................... pauate Righi, 1986 15b. Tubercula pubertatis in 21–22........................................................................... 16 16a. Male pores in 17/18..................................................................... rodriguezi sp. nov. 16b. Male pores in 19/20................................................................................... 17 17a. Calciferous glands with 25 to 32 parallel lamellae........................................ gavi Righi &Araujo, 2000 17b. Calciferous glands with 18 to 22 parallel lamellae........................................................... 18 18a. Nephropores aligned with setae d............................................................ bucki Righi, 1986 18b. Nephropores aligned with dorsal setae.................................................................... 19 19a. Clitellum in 17–26................................................................ paraguayensis (Rosa,1895) 19b. Clitellum in 17½26................................................................................... 20 20a. Spermathecae with duct long cylindrical as the ampule....................................... evelineae Righi, 1986 20b. Spermathecae with duct long triangular something oblate..................................................... 18