tetrasternum

English

Etymology

From tetra- +‎ sternum.

Noun

tetrasternum (plural tetrasterna)

1. (arachnology) The second sclerite of a segmented sternal complex.

   Coordinate terms: tritosternum, pentasternum

   • 2014 August 1, Ana Caroline O. Vasconcelos, Alessandro P. L. Giupponi, Rodrigo L. Ferreira, “A new species of Charinus from Minas Gerais State, Brazil, with comments on its sexual dimorphism (Arachnida: Amblypygi: Charinidae)”, in The Journal of Arachnology, volume 42, number 2, →DOI, page 156:

     Sternum (Fig. 3): Tri-segmented with all segments sclerotized and convex. […] Second segment (tetrasternum) rounded, with 1 upper pair of strong setae and several setulae encircling the base (in some specimens the upper pair of setae do not differs in size from the basal setae).