Hypolobocera Ortmann, 1897

Campos, Martha R. & Alexander, Moises, 2024, A new species of freshwater crab of the genus Hypolobocera Ortmann, 1897 from Colombia (Crustacea: Decapoda: Pseudothelphusidae), including a key to the species of the genus distributed in Colombia, Zootaxa 5453 (2), pp. 282-290 : 288-289

Key to the species of Hypolobocera Ortmann, 1897 in Colombia

1. Lateral lobe of first male gonopod with triangular process (Campos 2014: fig. 106B–D)...................................................................................................... Hypolobocera alata Campos, 1989

- Lateral lobe of first male gonopod without triangular process................................................... 2

2. Distal mesial side of first male gonopod with triangular lobe (Campos 2014: fig. 128B, D)..................................................................................... Hypolobocera kamsarum Campos & Rodríguez, 1995

- Distal mesial side of first male gonopod without triangular lobe................................................ 3

3. Cephalic surface of first male gonopod with accessory lobe parallel to lateral lobe (Campos 2014: fig. 118C, D)............................................................................... Hypolobocera cajambrensis Prahl, 1988

- Cephalic surface of first male gonopod without accessory lobe................................................. 4

4. Cephalic surface of first male gonopod with prominent tuberculated ridge parallel to lateral lobe (Campos 2014: fig. 116B, C)............................................................. Hypolobocera buenaventurensis ( Rathbun, 1905)

- Cephalic surface of first male gonopod without prominent tuberculated ridge...................................... 5

5. Lateral lobe of first male gonopod ax shape (Campos 2014: fig. 124B–E).................................................................................................. Hypolobocera emberarum Campos & Rodríguez, 1995

- Lateral lobe of first male gonopod not ax shape............................................................. 6

6. Lateral lobe of first male gonopod place far from apex (Campos 2014: fig. 112B–E)...................................................................................................... Hypolobocera beieri Pretzmann, 1968

- Lateral lobe of first male gonopod place near to apex......................................................... 7

7. Lateral lobe of first male gonopod convex in lateral view (Campos 2014: fig. 132C)....................................................................................................... Hypolobocera malaguena Prahl, 1988

- Lateral lobe of first male gonopod not convex in lateral view................................................... 8

8. Lateral lobe of first male gonopod with narrow expansion distal (Campos 2014: fig. 140B–D)................................................................................................... Hypolobocera mutisi Prahl, 1988

- Lateral lobe of first male gonopod without narrow expansion distal.............................................. 9

9. Lateral lobe of first male gonopod elongated, narrow (Campos 2014: fig. 126B)......................................................................................................... Hypolobocera gorgonensis Prahl, 1983

- Lateral lobe of first male gonopod not elongated, and narrow.................................................. 10

10. Lateral lobe of first male gonopod semi-circular............................................................ 11

- Lateral lobe of first male gonopod rectangular............................................................. 13

11. Apex of the of first male gonopod with prominent rounded papilla near spermatic channel (Campos 2014: fig. 114E)........................................................................... Hypolobocera bouvieri ( Rathbun, 1898)

- Apex of the first male gonopod without prominent papilla near spermatic channel................................. 12

12. External margin of lateral lobe of first male gonopod, fringed with tiny spinules (Campos 2014: fig. 134B–E)........................................................................... Hypolobocera martelathami ( Pretzmann, 1965)

- External margin of lateral lobe of first male gonopod devoid of spinules......................................... 15

13. Lateral lobe with lateral external margin smooth (Campos 2014: fig. 138B, D).... Hypolobocera murindensis Campos, 2003

- Lateral lobe with lateral external margin crenulated or with spines.............................................. 14

14. Lateral external margin of lateral lobe crenulated (Campos 2014: fig. 108B, C).................................................................................................... Hypolobocera andagoensis ( Pretzmann, 1965)

- Lateral external margin of lateral lobe with conspicuously spines ( Fig. 2A, C–E )......... Hypolobocera ituangoensis n. sp.

15. Mesial lobe of first male gonopod semi-circular in distal view................................................. 16

- Mesial lobe of first male gonopod sub-triangular in distal view................................................ 17

16. Mesial lobe of first male gonopod with an acute spine on internal side (Campos 2014: fig. 130E)........................................................................................... Hypolobocera lloroensis Campos, 1989

- Mesial lobe of first male gonopod without spine on internal side (Campos 2014: fig.120E).............................................................................................. Hypolobocera chocoensis Rodríguez, 1980

17. Meso-caudal projection of spermatic channel ending in semi-acute papilla (Campos 2014: fig.146D, E).......................................................................................... Hypolobocera velezi Campos, 2003

- Meso-caudal projection of spermatic channel ending in rounded papilla......................................... 18

18. Meso-caudal projection of spermatic channel with row of spinules on internal side (Campos 2014: fig. 142F).............................................................. Hypolobocera noanamensis Rodríguez, Campos & López, 2002

- Meso-caudal projection of spermatic channel without spinules on internal side.................................... 19

19. Apex with conspicuous rounded teeth on caudal-cephalic border (Campos 2014: fig. 122C–E)................................................................................................. Hypolobocera dentata Prahl, 1987

- Apex without teeth on caudo-cephalic border.............................................................. 20

20. Apex outline sub-triangular with lateral border semi-acute.................................................... 21

- Apex outline sub-triangular with lateral border straight (Campos 2014: fig. 144E).................................................................................................. Hypolobocera rotundilobata Rodríguez, 1994

21. Apex with prominent sub-triangular spine on caudal side of spermatic channel (Campos 2014: fig. 110C–E)............................................................ Hypolobocera barbacensis Campos, Magalhães & Rodríguez, 2002

- Apex without spine on caudal side of spermatic channel (Campos 2014: fig. 136D, E)..... Hypolobocera meineli Prahl, 1988

Figures

FIGURE 2. Hypolobocera ituangoensis n. sp., male holotype (cl 12.8 mm, cw 20.6 mm), ICN-CR 3628, first male gonopod. A,left first gonopod, caudal view; B, same, mesial view;C, same, cephalic view; D, same, lateral view; E, same, lateral lobe caudal view; F, apex distal view. 1, marginal suture; 2, caudal ridge; 3, lateral lobe; 4, spines; 5, spinules; 6, spine-like papilla; 7, mesial lobe; 8, meso-caudal projection of spermatic channel; 9 spermatic channel.