Regarding the use of the term "Italian" -- in a recent report on the VSH trait in "commercial" stock, the term is not used even once.

See:

Expression of Varroa Sensitive Hygiene (VSH) in Commercial VSH Honey Bees (Hymenoptera: Apidae)
Author(s): Robert G. Danka, Jeffrey W. Harris and José D. Villa
Source: Journal of Economic Entomology, 104(3):745-749. 2011.
Published By: Entomological Society of America

ABSTRACT We tested six commercial sources of honey bees, Apis mellifera L. (Hymenoptera:
Apidae), whose breeding incorporated the trait of Varroa sensitive hygiene (VSH). VSH confers
resistance to the parasitic mite Varroa destructor Anderson & Trueman by enhancing the ability of
the bees to hygienically remove mite-infested brood. VSH production queens (i.e., queens commercially
available for use in beekeepers' production colonies) from the six sources were established in
colonies which later were measured for VSH. Their responses were compared with those of colonies
with three other types of queens, as follows: VSH queens from the selected closed population
maintained by USDA-ARS for research and as a source of breeding germplasm, queens from the
cooperating commercial distributor of this germplasm, and queens of a commercial, mite-susceptible
source.

Genetic effects of queen type affected the change
in infestation of brood by V. destructor (Table 1).
Colonies of ARS VSH and Glenn Apiaries VSH reduced
infestation by 76 and 64%, respectively. Infestation
was reduced an average of 44% by VSH production
colonies (six sources combined) and 7% by control colonies.

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