Lepanthes glicensteinii are pollinated by male fungus gnats (Bradysia floribunda; Diptera; Sciaridae) through deceptive pollination (Blanco and Barboza 2005). The gnats are attracted to the flower by olfactory means upon perceiving the flower as a female gnat. The gnat approaches the plant and searches for an open flower. When an open flower is found he proceeds to position his abdomen around the labellum of the flower, clasping the labellum with his gonostili (genetic claspers). He then rotates 180° to face the opposite direction. This movement typically allows pollinia to be deposited on the abdomen of the gnat while the male proceeds to spend anywhere from 30 seconds to 20 minutes in this position until ejaculation occurs. After this process the male flies away without visiting any other flowers, however some gnats are seen copulating with a flower while pollinia is already attached to their abdomen indicating that second visits do occur. This method of pollination is called genitalic pseudocopulatory and is likely to be the mode of pollination for the Lepanthes genus, since the shape of the flower is similar across the genus.
Low reproductive success is common in orchids, including many species of Lepanthes, due to low levels of pollinator visitation (Tremblay et al. 1998). Lepanthes may have even less reproductive success because of host tree specificity and long distances between patches (Tremblay 1997). Genetic drift, the random success of some individuals above others, is therefore important to sustain Lepanthes populations and genetic diversity (Tremblay and Ackerman 2001).