Crematogaster

Blaimer, Bonnie B., 2012, A subgeneric revision of Crematogaster and discussion of regional species-groups (Hymenoptera: Formicidae), Zootaxa 3482, pp. 47-67 : 57-58

iv. Crematogaster kneri- group

1. Petiole moderately to sharply flared, or suboval ( Figs 14 a, 16a)

2. Postpetiole globular, with at most weak posterior impression ( Figs 24, 25 ).

3. Pronotum often with angular or tuberculate lateral margins ( Fig. 30 ).

4. Mesonotum often postero-laterally angulate or denticulate ( Fig. 31 ).

This group will probably contain a large part of the former subgenus Sphaerocrema , but this remains to be tested. At the moment the following species are assigned to this grouping: C. kneri Mayr , C. bequaerti Forel , C. concava Emery , C. luctans Forel and C. chlorotica Emery.

Figures

FIGURES 12 – 19. 12: posterior head margin rounded [Crematogaster (Orthocrema) rasoherinae, CASENT 0193412]; 13: posterior head margin with subangular corners [C. (Orthocrema) volamena, CASENT 0012744]; 14 a: petiole moderately flared, b: postpetiole weakly bilobed (dorsal view) [C. (Crematogaster) pilosa, CASENT 0193165]; 15 a: petiole broadly flared, b: postpetiole weakly bilobed (dorsal view) [C. (Crematogaster) lobata, CASENT 0193045]; 16 a: petiole sharply flared, b: postpetiole distintly bilobed with broad median impression (dorsal view) [C. (Crematogaster) flava, CASENT 0193691]; 17 a: petiole greatly flared, b: postpetiole distintly bilobed (dorsal view) [C. (Crematogaster) dahlii, CASENT 0193602]; 18 a: petiole oval, b: postpetiole weakly bilobed and with faint median impression (dorsal view) [C. (Crematogaster) cf. mjobergi, CASENT 0193799]; 19 a: petiole suboval, b: postpetiole distintly bilobed (dorsal view) [C. (Crematogaster) ranavalonae, CASENT 0193425].

FIGURES 20 – 27. 20: petiole elongate rectangular (dorsal view) [Crematogaster (Crematogaster) irritabilis, CASENT 0193598]; 21: petiole circular (dorsal view) [C. (Crematogaster) subcircularis, CASENT 0193915]; 22 a: petiole hexagonal, b: postpetiole distintly bilobed (dorsal view) [C. _ ss _ AUS 3, CASENT 0193798]; 23: postpetiole with a thin median impression [C. (Crematogaster) irritabilis, CASENT 0193598]; 24: postpetiole lacking median impression (dorsal view) [C. (Crematogaster) treubi, CASENT 0193783]; 25: postpetiole with faint median impression (dorsal view) [C. (Crematogaster) onusta, CASENT 0193714]; 26: propodeal spiracle compressed oval [C. _ ss 11 (= bbb 43), CASENT 0193399]; 27: occipital carinae reduced [C. (Crematogaster) cf. buchneri, CASENT 0193750].

FIGURES 28 – 35. 28: posterior head margin straight (Crematogaster (Crematogaster) ss 07 [= bbb 38], CASENT 0141219); 29: posterior head margin medially depressed (C. (Crematogaster) madagascariensis, CASENT 0127516); 30: pronotum with tuberculate lateral margins [C. (Crematogaster) cf. luctans, CASENT 0193747]; 31: mesonotum postero-laterally denticulate [C. (Crematogaster) cf. luctans, CASENT 0193747]; 32 a: mesonotum postero-laterally angulate, b: mesonotum with distinct dorsal face [C. (Crematogaster) madagascariensis, CASENT 0193580]; 33 a: pronotum with acute margins, b: mesonotum convex and postero-laterally margined [C. (Crematogaster) flava, CASENT 0193691]; 34: pronotum laterally rounded [C. (Crematogaster) irritabilis, CASENT 0193598]; 35: mesonotum in lateral view rounded and without distinct posterior face [C. (Crematogaster) irritabilis, CASENT 0193598].