Merizodus soledadinus, from Lebouvier et al. (2020). Belongs within: Conjunctae. The Merizodinae are a group of small ground beetles with a disjunct distribution in southern South America, southern Australasia and northeastern Asia (Roig-Juñent & Cicchino 2001). Characters (from Roig-Juñent & Cicchino 2001, as Zolini): Maxillary palpomere 3 plurisetose; elytron with apical plica, recurrent stria joined… Continue reading Merizodinae

The Trechodini

The above figure, from Uéno (1990), shows Trechodes satoi, a fairly typical representative of the carabid ground beetle tribe Trechodini. Members of this tribe are found in many parts of the world, though they are absent from the Nearctic region and were unknown from northern Asia prior to the description of Eotrechodes larisae from the… Continue reading The Trechodini

Megacephala (Pseudotetracha)

Female Megacephala blackburni, from Mal et al. (2012). Belongs within: Cicindelinae. The subgenus Pseudotetracha of the genus Megacephala is a group of bright metallic-coloured tiger beetles found on Australian salt flats. <==Megacephala (Pseudotetracha Fleutiaux 1894) G07     |–M. (*P.) cylindrica Macleay 1863 [incl. M. frenchi Sloane 1893] LM87     |–M. (P.) australis (Chaudoir 1865) G07 [=Tetracha australis… Continue reading Megacephala (Pseudotetracha)

Cicindela (Rivacindela)

Rivacindela vannidekiana, copyright Mark Golding. Belongs within: Cicindelinae. The subgenus Rivacindela of the genus Cicindela is a group of tiger beetles found on Australian salt flats, characterised by the presence of two or three teeth on the labrum and usually with extensive patches of white on the elytra. <==Cicindela (Rivacindela Brouerius van Nidek 1973) LM87… Continue reading Cicindela (Rivacindela)

Cicindela (Myriochile)

Cicindela semicincta, copyright Victor W. Fazio III. Belongs within: Cicindelinae. The subgenus Myriochile of the genus Cicindela is a group of tiger beetles with completely metallic-coloured legs bearing hooked setae along the posterior margin, and moderately abundant appressed setae on the venter of the body. <==Cicindela (Myriochile Motschulsky 1861) [=Myriochila (l. c.)] LM87     |–‘Myriochile’ melancholica… Continue reading Cicindela (Myriochile)


Apotomus rufus, copyright elleelle. Belongs within: Conjunctae. Contains: Broscini. The Broscinae are a group of ground beetles characterised by a pedunculate connection between the pro- and mesothorax, and a single supraorbital seta. Members of the genus Apotomus, which have elongate palps and an unmargined prothorax, are found on mudflats adjacent to rivers (Bouchard 2014). <==Broscinae… Continue reading Broscinae


Promecoderus viridiaeneus, copyright Lynne Forster. Belongs within: Broscini. Promecoderus is an Australian genus of broscin ground beetles characterised by the presence of a median tooth on the mentum. <==Promecoderus Dejean 1829 [incl. Acallistus Sharp 1886, Anheterus Putzeys 1868, Cnemacanthus Gray 1832] LM87     |–*P. brunnicornis Dejean 1829 [incl. P. degener Guérin-Méneville 1841, P. morosus Putzeys 1868]… Continue reading Promecoderus


Broscus cephalotes, copyright Udo Schmidt. Belongs within: Broscinae. Contains: Mecodema, Promecoderus. The Broscini are a group of large ground beetles with a pedunculate thorax, most diverse in the Australasian region (Britton 1949). The genus Broscus, species of which are relatively large and have two pairs of setae on the pronotum and eight or nine setae… Continue reading Broscini


Mecyclothorax punctipennis, from Liebherr (2012). Belongs within: Conjunctae. Mecyclothorax is a widespread genus of ground beetles found in insular south-east Asia and Oceania, characterised by filiform antennae and elytral epipleura that are twisted near the apex. <==Mecyclothorax Sharp 1903 [incl. Cyclothorax Macleay 1871 non Frauenfeld 1867; Mecyclothoracini] LM87 |–*M. montivagus (Blackburn 1878) [=Cyclothorax montivagus] LM87… Continue reading Mecyclothorax


Male Gnathaphanus melbournensis, photographed by S. E. Thorpe. Belongs within: Harpalitae. Gnathaphanus is a genus of ground beetles found in Asia and Australasia, characterised by conspicuous dorsal punctures on the elytra, and sponge-like soles of adhesive setae on the fore and mid tarsi of males. Gnathaphanus Macleay 1825 [incl. Mirosarus Bates 1878, Pachauchenius Macleay 1864]… Continue reading Gnathaphanus