Crematogaster quadriformis Roger 1863,

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-FFF1-F3D4-D79E370CFA8E

treatment provided by

Plazi

scientific name

Crematogaster quadriformis Roger 1863
status

 

Crematogaster quadriformis Roger 1863  a.

Crematogaster quadriformis Roger 1863 a: 207  .

Crematogaster quadriformis  var. gracilior Forel 1901  c. NEW SYNONYMY. [w syntypes examined, MHNG; São Paulo, Brazil]

Crematogaster quadriformis  subsp. vezenyii Forel 1907 b: 25  . NEW SYNONYMY.

Crematogaster quadriformis  r. gracilior Forel. Forel 1912 c: 218  .

Crematogaster (Orthocrema) quadriformis Roger. Santschi 1918: 182  .

Crematogaster (Orthocrema) quadriformis  subsp. gracilior Forel. Emery 1924 a: 135  .

Crematogaster (Orthocrema) quadriformis  subsp. vezenyii Forel. Emery 1924 a: 135  .

Crematogaster (Orthocrema) quadriformis gracilior Forel. Kempf 1972: 88  .

Crematogaster (Orthocrema) quadriformis vezeneyii Forel. Kempf 1972: 89  .

Crematogaster quadriformis  is the most frequently recorded ground-nesting Crematogaster  in Paraguay. This species can be diagnosed by the following combination of character states: propodeum in profile only slightly or not at all depressed below level of mesonotum; propodeal spines elongate but shorter than length of petiole; antennal scapes equal or greater in length than head length, in repose well exceeding the posterior margins of the head in full-face view; head sculpture densely punctate/striate except for a smooth frontal strip;> 20 subdecumbent to suberect setae on the first gastric tergite. Crematogaster quadriformis  shows considerable variation even within nest series in overall size, pilosity, eye size, and extent of punctation/striation on the head.

Jack Longino examined some recent Paraguayan collections and confirmed the identity of this species as C. quadriformis  . I have subsequently viewed Forel’s types of C. quadriformis gracilior  from São Paulo and found them to fall well within the range of variation I have observed in Paraguay, so I synonymize C. gracilior  here.

I was not able to view Forel’s types of C. quadriformis vezenyii  , described from material collected in Asunción. Forel’s description notes small size, a more shiny head, and lack of a well-developed tooth in the propodeal suture. These character states are common in the C. quadriformis  material I have examined towards the small end of the size distribution of nest series, so I find it likely that C. quadriformis vezenyii  is a collection of a young nest or small workers of C. quadriformis  .

NEW

University of Newcastle

MHNG

Museum d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Crematogaster

Loc

Crematogaster quadriformis Roger 1863

Wild, Alexander L. 2007
2007
Loc

Crematogaster (Orthocrema) quadriformis gracilior

Forel. Kempf 1972: 88
1972
Loc

Crematogaster (Orthocrema) quadriformis vezeneyii

Forel. Kempf 1972: 89
1972
Loc

gracilior

Forel. Emery 1924: 135
1924
Loc

vezenyii

Forel. Emery 1924: 135
1924
Loc

Crematogaster (Orthocrema) quadriformis

Roger. Santschi 1918: 182
1918
Loc

gracilior

Forel. Forel 1912: 218
1912
Loc

vezenyii

Forel 1907: 25
1907
Loc

var. gracilior

Forel 1901
1901
Loc

Crematogaster quadriformis

Roger 1863: 207
1863