Crematogaster bakeri
Creators: name: Hosoishi, Shingo
name: Ogata, Kazuo
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Crematogaster
Crematogaster bakeri

description: Key to species based on the worker caste (except for C. bakeri, which is incertae sedis.)
1 Propodeal spines developed and with pointed apices................................................................................................... 2
- Propodeal spines undeveloped and forming obtuse lobes ............................................................................................ 4
2 Antennal club 3-jointed. Pronotum raised steeply toward mesonotum in lateral view ................................ mucronata
- Antennal club 4-jointed. Pronotum raised moderately toward mesonotum in lateral view ......................................... 3
3 In lateral view, pronotum and mesonotum forming a single convexity, propodeum distinctly raised relative to prome- sonotum, metanotal groove deep ......................................................................................................................... vacca
- In lateral view, pronotum and mesonotum forming a single convexity, propodeum slightly raised relative to prome- sonotum, metanotal groove less deep .................................................................................................. yamanei sp. nov.
4 Dorsal median portion of head swollen ................................................................................................ tanakai sp. nov.
- Dorsal median portion of head not swollen .................................................................................................................. 5
5 Propodeal spiracle situated near the metapleural gland orifice, the distance between them about the same as the propodeal spiracle diameter (Fig. 4) ............................................................................................................................. 6
- Propodeal spiracle situated away from the metapleural gland orifice, the distance between them much greater than the propodeal spiracle diameter (Fig. 3) ....................................................................................................................... 9
6 Clypeus smooth and shining without longitudinal rugulae (Fig. 1) ..................................................................... inflata
- Clypeus striated with rugulae (Fig. 2) .......................................................................................................................... 7
7 Dorsal face of head strongly striated with abundant longitudinal rugulae. Scape not reaching posterior corner of head in large workers. Workers with pronounced size polymorphism .......................................................................... aurita
- Dorsal face of head not strongly striated with longitudinal rugulae. Scape reaching posterior corner of head. Workers monomorphic in size..................................................................................................................................................... 8
8 The posterior portion of pronotum with transverse rugulae in dorsal view (Fig. 6) .................................. physothorax
- The posterior portion of pronotum without distinct rugulae in dorsal view (Fig. 7) .......................................... onusta
9 Dorsal setae on posterior portion of fourth abdominal tergite directed medially (Fig. 8) ................................ difformis
- Dorsal setae on fourth abdominal tergite directed posteriorly (Fig. 9)....................................................................... 10
10 In lateral view, dorsal profile of promesonotum convex, propodeum distinctly raised relative to promesonotum, metanotal groove very deep ................................................................................................................................ sewardi
- In lateral view, dorsal profile of promesonotum convex, propodeum slightly raised relative to promesonotum, metanotal groove not so deep in dorsal median portion ................................................................................ ampullaris
description: Published as part of Hosoishi, Shingo & Ogata, Kazuo, 2009, A taxonomic revision of the Asian endemic subgenus Physocrema of the genus Crematogaster (Hymenoptera: Formicidae), pp. 15-36 in Zootaxa 2062 on page 19, DOI: 10.5281/zenodo.186855