Hoplochaetella, Michaelsen, 1900

Ahmed, Shakoor, Julka, Jatinder Mohan, Banerjee, Dhriti & Marimuthu, Nithyanandam, 2023, A new species of the genus Hoplochaetella Michaelsen 1900 (Clitellata: Octochaetidae) from the Deccan Peninsula Biogeographic Zone, India, Zootaxa 5346 (2), pp. 173-185 : 183

An identification key to earthworm species of the genus Hoplochaetella (Modified from Julka, 1988)

1 One pair of combined male and prostatic pore in segment 17.................................................. 2

- Two pairs of combined male and prostatic pores in 17 or 17/18 and 19 or 18/19................................... 3

2 Two pairs of spermathecal pores on segment 8. Last pair of hearts in segment 12......................... H. kinneari

- Only one pair of spermathecal pores on segment 7. Last pair of hearts in 13........................ H. darwini sp. nov.

3 Two pairs of spermathecal pores on segment 8.............................................................. 4

- Two pairs of spermathecal pores on segments 7 and 8 or 8 and 9 or 8 and 10..................................... 14

4 Last pair of hearts in segment 12................................................................... H. righii

- Last pair of hearts in segment 13......................................................................... 5

5 Genital markings and their associated glands absent................................................ H. inornata

- Genital markings and their associated glands present......................................................... 6

6 Genital markings with central apertures, internally with tubular and sausage-shaped glands.......................... 7

- Genital markings without central apertures, internally with sessile glands....................................... 10

7 Genital markings unpaired and median.................................................................... 8

- Genital markings paired............................................................................... 9

8 Genital markings on segment 19................................................ H. khandalaensis khandalaensis

- Genital markings on segments 16 and 19.......................................... H khandalaensis dichordarius

9 Genital markings intersegmental, on 16/17, 19/20-20/21.............................................. H. powelli

- Genital markings segmental, on segments 13-15.............................................. H. panchganiensis

10 Genital markings in part paired. Spermathecal diverticula in a complete circle............................. H. suctoria

- Genital markings unpaired. Spermathecal diverticula in two groups or an incomplete circle around duct............... 11

11 Genital markings median.............................................................................. 12

- Genital markings with centres on or close to male pore lines.................................................. 13

12 Genital markings on segments 17 and 19........................................................... H. affinis

- Genital markings on 16/17 and 20............................................................... H. bifoveata

13 Genital markings presetal on 17 or 16/17 (right side), presetal on 20 or 19/20 (left side). Copulatory setae on segment 9 present...................................................................................... H. kempi

- Genital markings on right side of 18-19, sometimes 17. Copulatory setae on segment 9 absent.......... H. kurmagarensis

14 Spermathecal pores on segments 8 and 9................................................................. 15

- Spermathecal pores not so located...................................................................... 19

15 Last pair of hearts in segment 13................................................................. H. mullani

- Last pair of hearts in segment 12........................................................................ 16

16 Copulatory setae on segment 8 absent........................................................ H. karnatakensis

- Copulatory setae on segment 8 present................................................................... 17

17. Copulatory setal glands in paired coelomic sac in segments 8 and 9.................................... H. anomala

- Copulatory setal glands free in segments 8 and 9........................................................... 18

18 Septa 6/7 present, penial setae unornamented................................................ H. sanvordemensis

- Septa 6/7 absent, penial setae ornamented......................................................... H. lavellei

19 Spermathecal pores on segments 7 and 8, last pair of hearts in 13........................................ H. stuarti

- Spermathecal pores on segments 8 and 10, last pair of hearts in 12..................................... H. londensis