Cicada Mania

The Cicada Mania Blog: News, Findings, and Discoveries About Cicadas.

March 16, 2013

Tettigarcta tomentosa

Filed under: Tettigarcta — by @ 2:46 pm

There are two families of cicadas, Cicadidae (most cicadas) and Tettigarctidae (only two species). The two species in the Tettigarctidae family are Tettigarcta crinita, of southern Australia, and Tettigarcta tomentosa, of Tasmania. Cicadas of the family Tettigarctidae have ancestral morphology, similar to fossilized cicadas1. They are known for their hairy appearance.

Here are some morphological differences between the two cicada families:

family Tettigarcta Cicadidae
Tymbal (Makes the cicada’s noise) poorly developed in both sexes well developmed in males
Tympana (listening apparatus) no yes
Pronotum (covers the dorsal area of the thorax) expands over mesonotum ends at pronotal collar
Pronotal collar (separates pronotum from mesonotum) no yes
Cruxiform elevation (a cross shaped structure on mesonotum) no yes

1See Allen F. Sanborn’s document Overview of Cicada Morphology for more information.

Here’s a photo of the Tettigarcta tomentosa from different angles (click the image for a closer view):


Tettigarctidae sp.

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