Key to Epopostruma of the southwestern Australian Botanical Province

This worker key is based on: [[Media:Heterick 2009.pdf|Heterick, B. E. 2009a. A guide to the ants of South-western Australia. Records of the Western Australian Museum, Supplement 76: 1-206. Part 2.]]

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 * Australia
 * SWBP
 * Epopostruma

1

 * Anterior as well as posterior angles of postpetiole expanded laterally in the form of spines or “wings” (Figure 555) . . . . . 2


 * Anterior postpetiole either rounding smoothly on to sides or anterior angles in form of denticles only, never spinous or wing-like (however, posterior extensions may form spines or angles, e.g. Figure 556) . . . . . 3

2
return to couplet #1
 * Area immediately above eye with a small tooth (Figure 557) . . . . . Epopostruma frosti


 * Area immediately above eye with a rounded angle (Figure 558) . . . . . Epopostruma lattini

3
return to couplet #1
 * In dorsal view posterior angles of postpetiole forming distinct wings (e.g. Figure 559) . . . . . 4


 * In dorsal view postpetiole either rounded posteriad or posterior angles weakly denticulate; not expanded as wings (e.g. Figure 560) . . . . . 5

4
return to couplet #3
 * Bases of the propodeal spines and lobes not connected by flanges of any sort, petiolar spines well developed, distinct . . . . . Epopostruma mercurii


 * Posterior face of propodeum with broad, distinct flanges, which connect the bases of the spines to the propodeal lobes, petiolar spines well developed or indistinct, reduced to sharp angles . . . . . Epopostruma sowestensis

5
return to couplet #3
 * Propodeal angles connected to propodeal lobes by flanges, developed propodeal spines lacking (Figure 561) . . . . . Epopostruma inornata


 * Propodeal angles not connected to propodeal lobes by flanges, distinct propodeal spines present (Figure 562) . . . . . 6

6
return to couplet #5
 * Posterolateral margin of petiole rounded, without protuberance (Figure 563) . . . . . Epopostruma quadrispinosa


 * Posterolateral margin of postpetiole with a sharp angle or dentiform lateral protuberance (Figure 564) . . . . . 7

7
return to couplet #6
 * Postpetiole with distinct angle between anterior and dorsal faces (Figure 565); gaster with slight traces of superficial microreticulation, otherwise smooth and shining . . . . . Epopostruma natalae


 * Postpetiole generally rounded without differentiation between anterior and dorsal faces (Figure 566); gaster evenly microreticulate, matt and dull . . . . . Epopostruma kangarooensis