Cerapachys Smith, 1857

Species synopsis of Cerapachys Smith, 1857 View in CoL

Cerapachys antennatus Smith, F., 1857

Cerapachys wheeleri Crawley, 1926 Cerapachys jacobsoni Forel, 1912

Cerapachys jacobsoni subsp. sumatrensis Crawley, 1926

Cerapachys vandermeermohri Menozzi, 1932

Cerapachys manni Crawley, 1926

Cerapachys sulcinodis Emery, 1889

Cerapachys butteli Forel, 1913

Cerapachys risii Forel, 1892

Cerapachys xizangensis Tang & Li, 1982

Cerapachys zhengyangwangi sp. nov.

Updated key to Cerapachys species based on worker caste.

The updated identification key to species is collated and modified from the original Chinese key ( Chen et al. 2016).

Petiole in dorsal view smooth without rugae ( Fig. 1A View Fig .................................. Cerapachys antennatus

Petiole in dorsal view with coarse longitudinal and/ or irregular rugae ( Fig. 1B, C View Fig ) ........................... 2

The anterior margin of the torulo-posttorular complex forming a small projector/tooth in full-face view ( Fig. 2A, B, C View Fig )........................................... 3

The anterior margin of the torulo-posttorular complex without a small projector/tooth in the full-face view ( Fig. 2D View Fig )........ C. zhengyangwangi sp. nov.

Large species (TL = 11mm)................... C. manni

Small species (TL <8mm)................................. 4

Petiole in dorsal view with two strong unbroken longitudinal rugae in the centre surrounded by irregular pits ( Fig. 1B View Fig )....................... C. jacobsoni

Petiole in dorsal view with several longitudinal and irregular rugae ( Fig. 1C View Fig ) ............................. 5

Anterior face of petiole shallowly concave ......... ...................................................... C. xizangensis

Anterior face of petiole straight ...... C. sulcinodis

[As noted above and pointed out by Chen et al. (2016), C. xizangensis could be a synonym for C. sulcinodis . The separation in the key is rather weak and this relationship requires further study, which is currently not possible due to lack of type access]