Crematogaster irritabilis

Blaimer, Bonnie B., 2012, A subgeneric revision of Crematogaster and discussion of regional species-groups (Hymenoptera: Formicidae), Zootaxa 3482, pp. 47-67 : 58-59

viii. Crematogaster irritabilis -group

1. Petiole hexagonal ( Fig. 22 a), suboval ( Fig. 18 a), or elongate-rectangular ( Fig. 20 ). 2. Postpetiole varying from narrowly bilobed ( Fig. 23 ) with sharp but narrow median impression, to strongly bilobed with broad median impression (e.g. Fig. 16 b).

3. Pronotum laterally rounded or subangular ( Fig. 34 ).

4. Mesonotum in lateral view rounded, and without distinct posterior face ( Fig. 35 ). 5. Fairly abundant erect pilosity over entire body.

6. Propodeal spines, if present, often with a downward curve.

Members of this group are currently: C. irritabilis Smith , C. polita Smith , C. obnigra Mann , C. treubi Emery and several yet unidentified (or undescribed) species.

Figures

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 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 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].