TY  - JOUR 
T1  - Proboscis Length and Resource Utilization in Two Uruguayan Bumblebees: Bombus atratus Franklin and Bombus bellicosus Smith (Hymenoptera: Apidae)
JO  - Neotropical Entomology
A1  - Arbulo, N
A1  - Santos, E
A1  - Salvarrey, S
A1  - Invernizzi, C
SN  - 1519-566X
UL  - 10.1590/S1519-566X2011000100010
VL  - 40 
Y1  - 2011
PB  - Brazil 
ER  -