I'm an OpenSUSE user, and I do understand the question. In this case you are most likely misguided by the capital D.

(Open)SUSE makes perl modules available with the perl- prefix. This means that e.g. Text::CSV_XS is available as package perl-Text-CSV_XS-0.73-6.1.x86_64.

The normal -devel packages on (Open)SUSE refer to the libraries and header files needed for development for the same package without the -devel extension. E.g. the header files for openssl are in package openssl-devel.

Now back to your confusion. On CPAN (where most modules come from), there are a certain number of packages in the Devel:: namespace. Just like Text::CSV_XS is in the Text:: namespace, Devel::Size is in the Devel:: namespace, and (Open)SSE makes it avalable as perl-Devel-Size-0.71-1.1.x86_64.

For perl itself, there are only two packages: perl-5.10.0-143.2.x86_64 (the 64bit version) and perl-32bit-5.10.0-143.1.x86_64 (the 32bit version).

I hope this clears up your doubts.