Zopherus jourdani

The ability of Z. jourdani to survive for extended periods of time without food is well-documented in several papers and journals; it is known as "Caméleon" in Guatemala because of this ability.[1][5][4] In the 1877-'78 Annales de la Sociéte Entomologique de Belgique, such a demonstration is recorded on the July 6th meeting: “...Mr. J. Rodriguèz brought six examples from Guatemala, kept without food in a box during the since the month of April. Three arrived in Europe still alive.”(French: M. J. Rodriguez vient d'en apporter de Guatemala six examplaires, demeurés sans nourriture dans un boîte depuis le mois d'Avril. Trois sont arrivés encore vivants en Europe.)[4]

Zopherus jourdani on display at the Texas A&M University Insect Collection.

Specimens of Z. jourdani have variable colouration; they are mottled black and white, but the amount of each colour present varies. Light forms from Costa Rica were described by Champion in 1874 as Z. costaricensis,[6][1] which was synonymized nearly a century later in 1972.[1] Based on measurements recorded by Charles Triplehorn, it is one of the largest species in the genus, Z. chilensis being the largest. Z. jourdani has a variable length of between 17.7 and 36 mm, and a width of 6.1–12 mm.[1]