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The article presents research which explored the remarkable entrance to the nest of stingless bees such as the Tear Drinking Pariotrigona klass which live in limestone cavities in Southern Thailand. The nest is composed of different coral-like clumps that are interconnected through conduits that served as its roof. The clumps are consisted of numerous tubelets which have the dimensions of 2.5 to 6 millimeters wide and 10 centimeters long. The researchers found a hard resin tube that connects the nest to a rock.

The article presents a study on bee workers (Hymenoptera: Apidae) that drink lachrymation (tears) from human eyes and also the possible risk of transmission of eye disease. The study aims to explore and discuss the tear drinking behavior of hymenopterans, particularly of minute stingless bees Lisotrigona cacciae (Nurse), L. furva Enggel and Patriotrigona klossi (Schwarz), and the medical implications of this behavior. Field observations were done as part of the methods conducted for the study. A table is presented that summarizes the feeding habit of various bee species. It also mentions that the amino acids from the human tears help in the development of the egg in females and for males, it plays the role of the 'male dowries' during the mating season and act as aphrodisiacs.