Diversity and abundance of bees were estimated in six agro-climatic
regions of an intensive agricultural state of India i.e. Punjab during
the year 2020-21. Random sampling was done at various locations in all
the six agro-climatic regions. Thirty sweeps of the hand insect net were
made at each location. Overall, 7482 bees’ specimens were collected
among which the most abundant bee species was Apis mellifera Linnaeus
(12.58%), followed by Apis dorsata Fabricius (12.24%), Apis cerana
Fabricius (11.61%) and Apis florea Fabricius (9.18%). The highly
diverse regions with respect to number of bee species and their
respective numbers were Sub-mountain Undulating (30 species, 1674
individuals) and Undulating Plain regions (29 species, 1662
individuals). The least diverse region was Western region (20 species,
743 individuals). Bombus haemorrhoidalis Smith was rare and restricted
only to extreme Eastern part of the state, adjacent to hilly region,
with relative abundance of 0.72 per cent. Sub-mountain Undulating and
Undulating Plain regions were highly similar to each other as
represented by Bray-Curtis and Jaccard’s indices. These two regions, had
lower cropping intensity than other regions, provided lesser disturbed
area and agro-chemical usage. Thus, these regions fulfil the utmost
requirement of the native bee species i.e. good nesting place with ample
food resources. Nonetheless, further studies are required to intensively
investigate the area and to find possible linkage of various
agricultural landscapes with bee pollinators’ community.