Megalopinus incisicollis, PUTHZ, 1994

Puthz, V., 2012, Über die neuweltlichen Megalopinus-Arten (Coleoptera, Staphylinidae) (24. Beitrag zur Kenntnis der Megalopsidiinen), Linzer biologische Beiträge 44 (1), pp. 613-834 : 690-691

Key to the species of the incisicollis -group

(Several species are repeatedly quoted because of variable elytral pattern.)

1 Elytra black.........................................................................................................................2

- Elytra with reddish/brownish spots/pattern.........................................................................6

2: Parameres (fig. 219). (FB: 1.5-1.6mm). Guyana,?French Guiana ....... furcatistilus nov.sp.

-: Parameres otherwise......................................................................................................3

3: Parameres both long and slender (fig. 223). (FB: 1.5-1.7mm). Suriname, French Guiana, Brasilien................................................................................. simplicistilus nov.sp.

-: Parameres otherwise......................................................................................................4

4: Both parameres about equal in shape (fig. 213). (FB: 1.5-1.6mm). Brasilien, Guyana............................................................................................................. brevis PUTHZ -: Parameres different in shape..........................................................................................5

5: Parameres (fig. 215). (FB: 1. 55). Guyana....................................... diversistilus nov.sp.

-: Parameres (fig. 224). (FB: 1.5-1. 7). Paraguay, Guyana.................... amplistilus nov.sp.

6 Elytra with a reddish subhumeral spot only.: Parameres (fig. 224). (FB: 1. 65mm) Paraguay, Guyana................................................................................... amplistilus nov.sp.

- Elytra with a subhumeral and a posterior spot....................................................................7

7 Posterior spot of elytra only in sutural half.........................................................................8

- Posterior spot of elytra narrowly elongated toward side...................................................12

8 Smaller, FB 1.7mm..........................................................................................................9

- Larger, FB 1.7mm..........................................................................................................10

9: Parameres (fig. 227). (FB: 1.4-1.8mm). French Guiana ................ pannosistilus nov.sp.

-: Parameres (fig. 213). (FB: 1.5-1.6mm). Brasilien, Guyana........................ brevis PUTHZ

10: E with a strong falciform sclerite (fig. 212), parameres (fig. 218). (1.7-1.8mm). Guyana................................................................................................. endofalcatus nov.sp.

-: E otherwise ..................................................................................................................11

11: Parameres (fig. 225). (FB: 1.8-1.9mm). Brasilien, Guyana, French Guiana, Suriname.................................................................................................. incisicollis PUTHZ

-: Parameres (fig. 214). (FB: 1.8-2.0mm). French Guiana................ angulatistilus nov.sp.

12: E with a strong falciform sclerite.................................................................................13

-: E otherwise ..................................................................................................................14

13: Falciform sclerite of E larger (fig. 212), parameres very slender (fig. 218). (1.8- 1.9mm). Guyana................................................................................... endofalcatus nov.sp.

-: E (fig. 206), falciform sclerite smaller, parameres broader (fig. 216). (1.6-1.8mm). Peru, Bolivia, French Guiana.................................................................... duplicatus PUTHZ

14: Left paramere with a large triangular projection at base..............................................15

-: Left paramere without or only with a tiny triangular projection at base......................16

15: E with a large laterally serrate sclerite (fig. 209), parameres (fig. 209). (1.6- 1.7mm). Peru, Ecuador?, Bolivia................................................................... chinan PUTHZ

-: E otherwise 18 16: Parameres (fig. 222), E (fig. 207). (FB: 1.9-2.0mm). Peru, Brazil......................................................................................................... moderatus PUTHZ

-: Parameres otherwise....................................................................................................17

17: Parameres (fig. 221). (FB: 1.6-1.7mm). Colombia, Peru............................ franzi PUTHZ

-: Parameres (fig. 217). (FB: 1.7mm). Bolivia.................................... robustistilus nov.sp.

18: Parameres very broad (fig. 224). (1.5-1.7mm) (See fig. 214)............ amplistilus nov.sp.

-: Parameres less broad....................................................................................................18

19: Parameres (fig. 227). (FB: 1.4-1.8mm). (See fig. 227) .................. pannosistilus nov.sp.

-: Parameres otherwise....................................................................................................20

20: Parameres (fig. 226), E (fig. y). (FB: 1.6mm). Costa Rica, Panama... modestus (SHARP)

-: Parameres (fig. 220). (FB: 1. 7). Guyana..................................... inaequalistilus nov.sp.