Sap beetles are minute to small. They are broad, flattened with large head and eyes. Their antennae are short and the last three segments are always clubbed. Many are brightly colored with red or yellow spots or bands of black. Others are more dull brown.
Adults of some sap beetles can be found abundantly in flowers, especially cactus. They are attracted to decaying vegetable matter, fermenting fruit, and sap. Some are found under bark.
Information courtesy of: https://texasinsects.tamu.edu/centipede-millipede/