A taxonomic revision of the Asian endemic subgenus Physocrema of the genus Crematogaster (Hymenoptera: Formicidae) Author Hosoishi, Shingo Author Ogata, Kazuo text Zootaxa 2009 2062 15 36 journal article 41180 10.5281/zenodo.186855 23f6f46c-8a7c-48de-81e7-1adcf43ecbc6 1175-5326 186855 85FC2E42-200C-4102-899E-5684317234EA 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