Crematogaster rochai Forel 1903,

Wild, Alexander L., 2007, A catalogue of the ants of Paraguay (Hymenoptera: Formicidae), Zootaxa 1622, pp. 1-55: 52

publication ID

http://doi.org/ 10.5281/zenodo.179222

persistent identifier

http://treatment.plazi.org/id/03C2878B-FFF5-FFF6-F3D4-D3BE35BBFEEE

treatment provided by

Plazi

scientific name

Crematogaster rochai Forel 1903
status

 

Crematogaster rochai Forel 1903  .

Crematogaster rochai Forel 1903: 255  . [w syntypes examined, MHNG; Ceará, Brazil, (Rocha)]

Crematogaster brevispinosa  r. rochai Forel. Forel 1912 c: 213  .

Crematogaster (Orthocrema) brevispinosa  st. malevolens Santschi 1919: 41  . NEW SYNONYMY. [w syntypes examined, NHMB; Nueva Pompeya, Chaco, Argentina  (Joergensen)].

Crematogaster (Orthocrema) brevispinosa  subsp. rochai Forel. Emery 1924 a: 134  .

Crematogaster (Orthocrema) brevispinosa rochai Forel. Kempf 1972: 86  .

Crematogaster (Crematogaster) rochai Forel. Longino 2003: 102  .

Crematogaster (Crematogaster) malevolens Santschi. Longino 2003: 131  . Raised to species.

Crematogaster rochai  can be diagnosed by the following combination of characters: antennal scapes short, less than. 8 x head length, in repose failing to reach posterior margin of head in full-face view; dorsal surface of head largely devoid of erect setae; promesonotum slightly arched in profile; propodeal suture present but not deep; postero-dorsal face of propodeum forming a single concave slope, not broken into distinct dorsal and posterior faces; propodeal spines short and upturned; first gastric tergite (= abd. tergite 4) with <6 standing setae exclusive of posterior row.

Mature colonies in the Crematogaster crinosa  complex, including C. rochai  , are polymorphic in the worker caste and occasionally produce rather large workers. Santschi’s C. malevolens  seems to be little other than a large C. rochai  . I can find no consistent characters to separate C. malevolens  from the C. rochai  type or from Paraguayan material that Jack Longino has identified as C. rochai  . Longino (2003) elevated C. malevolens  to species with the intent to clear trinomials from the C. crinosa  complex but did not provide additional reasoning. If C. malevolans  is indeed conspecific with what I call C. rochai  in Paraguay, an alternate resolution would be to split these southern populations off from C. rochai  under the name C. malevolens  . Specimens from southern South America are more pilose and bear a stronger propodeal suture than more northerly material Longino (2003), character states that apply equally to C. malevolens  . Considering the allopatric nature of the variation, however, I prefer to retain a single species.

MHNG

Museum d'Histoire Naturelle

NEW

University of Newcastle

NHMB

Naturhistorisches Museum, Basel

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Crematogaster

Loc

Crematogaster rochai Forel 1903

Wild, Alexander L. 2007
2007
Loc

Crematogaster (Crematogaster) rochai

Forel. Longino 2003: 102
2003
Loc

Crematogaster (Crematogaster) malevolens

Santschi. Longino 2003: 131
2003
Loc

Crematogaster (Orthocrema) brevispinosa rochai

Forel. Kempf 1972: 86
1972
Loc

rochai

Forel. Emery 1924: 134
1924
Loc

malevolens

Santschi 1919: 41
1919
Loc

rochai

Forel. Forel 1912: 213
1912
Loc

Crematogaster rochai

Forel 1903: 255
1903