Small hive beetle (Aethina tumida), larva. Heavy infestations of these larvae can cause a large portion of the honey stores to ferment.
Larvae of syrphid flies in the genus Microdon are so odd that they were originally described as molluscs.  The adults are more or less normal-looking flies, but larvae are predators of ant brood, living within the dark galleries of ant nests (in this case, with Linepithema oblongum).

Termas de Reyes, Jujuy, Argentina
Inside the brood nest, an Odontomachus brunneus trap-jaw ant larva feeds on the remains of a termite.  Unlike adult ants, larvae can consume solid food.

Archbold Biological Station, Florida, USA
Larvae of syrphid flies in the genus Microdon are so odd that they were originally described as molluscs.  The adults are more or less normal-looking flies, but larvae are predators of ant brood, living within the dark galleries of ant nests (in this case, with Linepithema oblongum).

Termas de Reyes, Jujuy, Argentina
Inside the brood nest, an Odontomachus brunneus trap-jaw ant larva feeds on the remains of a termite. Unlike adult ants, larvae can consume solid food.

Archbold Biological Station, Florida, USA
Inside the brood nest, an Odontomachus brunneus trap-jaw ant larva feeds on the remains of a termite.  Unlike adult ants, larvae can consume solid food.

Archbold Biological Station, Florida, USA
Inside the brood nest, an Odontomachus brunneus trap-jaw ant larva feeds on the remains of a termite. Unlike adult ants, larvae can consume solid food.

Archbold Biological Station, Florida, USA
See photo in original gallery.
all images and text © Alex Wild 2001-2013