Molineus, Cameron, 1923

Mata-López, Rosario, 2017, A new species of Molineus (Nematoda: Molineidae) parasite of Procyon lotor (Mammalia: Carnivora) in Mexico with a taxonomic key for the species of the genus, Zootaxa 4320 (2), pp. 391-400 : 399-400

Taxonomic key for the species included in Molineus distributed worldwide

1 Spicules with 2 terminal processes........................................................................ 2

- Spicules with 3 terminal processes........................................................................ 9

2 Length of spicules> 0.160.............................................................................. 3

- Length of spicules <0.140.............................................................................. 4

3 Spicules with distal end of internal process tri-digitated.......................... M. brachyurus Costa & Freitas, 1967 Host : Chrysocyon brachyurus (Carnivora) ; Neotropical Realm

- Spicules with distal end of internal process terminating in point............................ M. cynictis (Leroux, 1933) Host : Cynictis penicillata ( Carnivora ); Ethiopian Realm

4 Synlophe ridges>14................................................................................... 5

- Synlophe ridges <14................................................................................... 7

5 Spicules with a conspicuous medially-directed barb anteriorly............................ M. barbatus Chandler, 1942 Host : Procyon lotor (Carnivora) ; Nearctic Realm

- Spicules without a conspicuous medially-directed barb anteriorly................................................ 6

6 Spicules complex, with the internal process slender, ending in globular swelling........................ M. lotoris n. sp. Host: Procyon lotor (Carnivora) ; Neotropical Realm

- Spicules simple, terminating in 2 needlelike processes...................... M. asiaticus Tubangui & Masilugnan, 1937 Host : Paradoxurus hermaphroditus (Carnivora) ; Oriental Realm

7 Spicules with 1 straight process and other ending in hook......... M. elegans (Travassos, 1921) Travassos & Darriba, 1929 Host : Saimiri sciureus (Primates) ; Neotropical Realm

- Spicules with both processes with straight distal ends........................................................ 8

8 Bursa not distinctly divided into lobes................................................ M. felineus Cameron, 1923 Host : Puma yagouaroundi (Carnivora) ; Neotropical Realm

- Bursa distinctly divided into lobes................................................. M. paraensis Travassos, 1937 Host : Potos flavus (Carnivora) ; Neotropical Realm

9 Terminal processes of spicules similar in length............................................................. 10

- Terminal processes of spicules different in length........................................................... 14

10 Length of spicules <0.1................................... M. inexpectatus Durette-Desset , Guerrero & Boyer, 2000 Host: Lachesis muta (Squamata) ; Neotropical Realm

- Length of spicules> 0.12.............................................................................. 11

11 Dorsal lobe not differentiated from the lateral lobes...................................... M. europaeus Zunker, 1928 Host : Mustela putorius (Carnivora) ; Palearctic Realm

- Dorsal lobe differentiated from the lateral lobes............................................................. 12

12 Length of spicules> 0.17.......................................................... M. torulosus (Molin, 1861) Host : Cebus capucinus (Primates) ; Neotropical Realm

- Length of spicules <0.14.............................................................................. 13 13 Point of interno-dorsal process of spicules hammer-shaped................... M. midas Durette-Desset & Corvione, 1998 Host : Saguinus midas (Primates) ; Neotropical Realm

- Terminal processes of spicules ending in point............................................ M. major Cameron, 1936 Host : Eira Barbara (Carnivora) ; Neotropical Realm

14 Spicules with two large and one short processes............................................................ 15

- Spicules with two short and one large processes........................................................... 19

15 Dorsal ray shorter than rays 4................................................... M. planicipitis (Cameron, 1928) Host : Prionailurus planiceps (Carnivora) ; Oriental Realm

- Dorsal ray larger or similar in length than rays 4............................................................ 16

16 Terminal processes of spicules not fused nor enveloped by a membrane..................... M. barbaris Cameron, 1936 Host : Eira barbara (Carnivora) ; Neotropical Realm

- Terminal processes of spicules fused or enveloped by a membrane.............................................. 17

17 Terminal processes of spicules enveloped by a membrane................ M. cati Durette-Desset, Boomker & Malan, 2000 Host : Felis catus (Carnivora) ; Ethiopian Realm

- Terminal processes of spicules fused..................................................................... 18

18 Rays 9 bifurcate.................................................................. M. mustelae Schmidt, 1965 Host : Mustela frenata (Carnivora) ; Nearctic Realm

- Rays 9 entire................................................................ M. nasuae Lent & Freitas, 1938 Host : Nasua narica (Carnivora) ; Neotropical Realm

19 Synlophe ridges> 20.................................................................................. 20

- Synlophe ridges <20.................................................................................. 23

20 Synlophe ridges 20–24..................................................... M. sichuanensis Wu & Zhang, 1984 Host : Ailurus fulgens (Carnivora) ; Oriental Realm

- Synlophe ridges> 40.................................................................................. 21

21 Synlophe ridges 52........................................................... M. samueli Platt & Pence, 1981 Host : Taxidea taxus (Carnivora) ; Nearctic Realm

- Synlophe ridges 40................................................................................... 22

22 Length of spicules> 0.200....................................................... M. genettae (Cameron, 1927) Host : Genetta genetta (Carnivora) ; Ethiopian Realm

- Length of spicules <200........................................................... M.patens (Dujardin, 1845) Host : Mustela nivalis (Carnivora) ; Palearctic Realm

23 Length of spicules 0.154-0.175......................................... M. petrovi Durette-Desset & Pesson, 1987 Host : Mustela sibirica (Carnivora) ; Palearctic Realm

- Length of spicules <0.140............................................................................. 24

24 Length of gubernaculum 0.1............................................ M. legerae Durette-Desset & Pesson, 1987 Host : Vulpes vulpes ( Carnivora ); Palearctic Realm

- Length of gubernaculum <0.07......................................................................... 25

25 Gubernaculum hooked anteriorly........................................... M. springsmithi Inglis & Ogden, 1965 Host : Prionailurus bengalensis (Carnivora) ; Oriental Realm

- Gubernaculum not as above............................................................................ 26

26 Medio-internal terminal processes of spicules ending barbed............................... M. vexillarius Dunn, 1961 Host : Saguinus nigricollis (Primates) ; Neotropical Realm

- Terminal processes of spicules ending in point.............................................................. 27

27 Synlophe ridges 10-12.................................................. M. inglisi Durette-Desett & Pesson, 1987 Host : Prionailurus bengalensis (Carnivora) ; Oriental Realm

- Synlophe ridges 16............................................................... M. pardalis Cameron, 1936 Host : Leopardus pardalis (Carnivora) ; Neotropical Realm