1) Larva 
Mealworms are the larval form of the mealworm beetle, Tenebrio molitor, a species of darkling beetle. Like all holometabolic insects, they go through four life stages: egg, larva, pupa, and adult. Larvae typically measure about 2.5 cm or more, whereas adults are generally between 1.25 and 1.8 cm in length. == Reproduction == The mealworm beetle br...
(from the article `darkling beetle`) The larvae of a widely distributed darkling beetle known as the mealworm (Tenebrio) are used as food for such pets as birds and fish. Both the ...
The larval form of Tenebrio molitor, or the darkling beetle.
[n] - the larva of beetles of the family Tenebrionidae
noun the larva of beetles of the family Tenebrionidae