''Alobates pensylvanicus'' is a species of

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

in the genus Alobates whose common name is false mealworm beetle. The species is black, has a pronotum that is nearly square, and has at least five rows of fine punctures on each elytron. False mealworm beetles live beneath bark and logs and are found throughout the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. They have a life span of one year. ''A. pensylvanicus'' is often misidentified with ''A. barbatus''. The difference between the two is on the

mentum The mentum is an anatomical structure, a projecting feature that is near the mouth of a variety of animals: *In insects, the mentum is the distal part of the labium. The mentum bears the palps, glossae, paraglossae, and/or ligula. *On the huma ...

of the head ventral. '' A. barbatus'' have a tuft of long yellow

setae In biology, setae (singular seta ; from the Latin word for "bristle") are any of a number of different bristle- or hair-like structures on living organisms. Animal setae Protostomes Annelid setae are stiff bristles present on the body. Th ...

, while ''A. pensylvanicus'' does not. Some

aquariums An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, a ...

use the

larvae A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The ...

as fish food. Unlike many other tenebrionids, the larvae are light white and slightly more moisture dependent. Pensylvanicus is often erroneously spelled as "pennsylvanica", "pensylvanica", or "pennsylvanicus."

References

Tenebrionidae Beetles of the United States Beetles described in 1775 Taxa named by Charles De Geer {{Tenebrionidae-stub