''Thermonectus zimmermani'' is a species of

diving beetle The Dytiscidae, from the Ancient Greek word δυτικός (''dystikos''), meaning "able to dive", are the predaceous diving beetles, a Family (biology), family of water beetles. They occur in virtually any freshwater habitat around the world, bu ...

native to western

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states of

Jalisco Jalisco, officially the Free and Sovereign State of Jalisco, is one of the 31 states which, along with Mexico City, comprise the 32 Political divisions of Mexico, Federal Entities of Mexico. It is located in western Mexico and is bordered by s ...

Colima Colima, officially the Free and Sovereign State of Colima, is among the 31 states that make up the 32 Federal Entities of Mexico. It shares its name with its capital and main city, Colima. Colima is a small state of western Mexico on the cen ...

, and

Morelos Morelos, officially the Free and Sovereign State of Morelos, is a landlocked state located in south-central Mexico. It is one of the 32 states which comprise the Political divisions of Mexico, Federal Entities of Mexico. It is divided into Mun ...

. ''T. zimmermani'' reaches a total length of and has variable bright yellow and black markings similar to that of '' T. marmoratus''. However, ''T. marmoratus'' has a spotted pattern of yellow circles, ''T. zimmermani'' has an irregular, blotched pattern. ''T. zimmermani'' head has a V-shaped medial black marking that has been reduced.

References

{{Taxonbar, from=Q2156945 Dytiscidae Beetles of North America Beetles described in 1981