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 Author Campos, Martha R. Universidad Nacional de Colombia, Instituto de Ciencias Naturales, Bogotá, Colombia Author Alexander, Moises Corporación Autónoma Regional del Centro de Antioquia, Medellín, Colombia text Zootaxa 2024 2024-05-20 5453 2 282 290 http://dx.doi.org/10.11646/zootaxa.5360.3.8 journal article 10.11646/zootaxa.5453.2.9 1175-5326 11234006 E3B50A58-26CA-43EF-AC47-2F8083CAC629 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