366 NEOTROPICAL PSELAPHIDAE 



Table VI 



SPECIES OF NEOTROPICAL PSELAPHIDAE 

 BY AUTHORS 



Student Species Described 



L Raffray 416 



2. Reitter 135 



3. Schaufuss 132 



4. Sharp 68 



5. Park 60 



6. Fletcher 34 



7. Aube 10 



8. Westwood 10 



9. Bruch 8 



10. Reichensperger 5 



11. Motschulsky 4 



12. Wasmann 4 



13. Mann 4 



14. Blanchard 3 



15. Gory 1 



16. LeConte 1 



17. Bryant 1 



18. Casey 1 



In the second place, the very vastness of the area already noted, has 

 served to isolate the collecting localities. This has had an advantageous effect 

 upon the validity of species but has not been beneficial to zoogeography. In 

 the following table the several political portions of the neotropics are analyzed 

 with respect to number of species. 



The next table shows the Pselaphidae broken down into as many separate 

 political areas as possible. The sum of the tribal totals (969 species) compared 

 with the actual number of species present (895 species) indicates how few of 

 the species have been reported from more than one country. The majority of 

 species have been reported at the time of their description, and have not been 

 heard of since that time. In the present paper a number are reported for the first 

 time in fifty years. This simply means that until local lists are present, the range 

 of species is too inadequately known for careful zoogeographic analysis. It also 

 means that, in addition to species already described, hundreds of undescribed 

 species await discoveiy if the long columns of zero in Table VII are to be 

 properly changed. 



On the other hand, some progress is being made through the years. About 

 one out of eleven species is known from two countries. Some pselaphids are 

 known to have an extensive geographic range. These cases lie especially in forms 

 which fly readily to lights at night {Arthmius, Reichenbachia) or are large-sized 

 and more or less abundant (Hamotus) . The Tyrini especially have ranges better 

 understood. For example Hamotus hirtus is known from both sexes and in three 

 islands in the Antilles; Hamotus monachus from Mexico to Costa Rica; Hamo- 

 tus tritomus from Mexico to Colombia; Reichenbachia celata from Mexico to 

 Nicaragua ; Reichenbachia sallaei from Mexico to Panama, and numerous addi- 

 tional examples could be added. 



