Bayesian consensus phylogram of C. explodens sp. n. and related taxa based on the concatenated alignments (2757 bp) of the three mitochondrial (COI, COII, cytB) and one nuclear (cad) phylogenetic markers. Nodes with posterior probabilities above 0.94 are marked with black dots. Specimens from Borneo are shown in green, from Thailand in blue. TUCIM 6463 corresponds to a male specimen.

Habitus of C. explodens sp. n., holotype, minor worker; a full-face b lateral, and c dorsal view.

Habitus of C. explodens sp. n., paratype, major worker; a full-face view b frontal shield c lateral, and d dorsal view.

Cuticular microsculpture of C. explodens sp. n.; a vertex of major worker (paratype) b gastral tergite I, and c gastral tergite IV of minor worker (holotype) d labels of holotype, minor worker.

Habitus of C. explodens sp. n., paratype, alate gyne; a full-face view b frontal shield c lateral d dorsal view e forewing with indicated measurements 2r and 4RsM.

Habitus of C. explodens sp. n. allotype, male; a full-face view b wings (see insert for illustration of measurements 2r and 4RsM) c lateral (see insert for detailed view of petiole), and d dorsal view.

Genital structures of C. explodens sp. n. paratype, male; genital capsule in a dorsal b ventral, and c lateral view d left penis valve e right volsella and gonostylus.

Variation of relevant morphometric measurements for the distinction of castes and species; a Metafemur length (FeL) in relation to head width (HW) for minor workers of C. explodens sp. n., as well as minor workers of C. badia and C. saundersi (type specimens plotted separately) b Scape length (SL) in relation to head width (HW) for minor workers, major workers, gynes and males of C. explodens sp. n., as well as male of C. badia.

Activity of C. explodens sp. n. at the entrance to the artificial nest #38. a Scatter plot of the number of minor workers entering (black dots) and leaving (open dots) the nest depending on the time of day b Scatter plot of the number of minor worker ants entering (black dots) and leaving (open dots) the nest depending on the air temperature. Polynomial trend lines on a and b are shown for the numbers of entering (black) and exiting (grey) minor workers c and d show high and low worker activity near the entrance of nest #38, respectively; white bars denote 1 cm.

Habitus of C. badia, male; a frontal b lateral; genital capsule in c dorsal d ventral, and e lateral view f right volsella and gonostylus g left penis valve.