A catalogue of the ants of Paraguay (Hymenoptera: Formicidae).
Author
Wild, A. L.
text
Zootaxa
2007
1622
1
55
http://www.antbase.org/ants/publications/21367/21367.pdf
journal article
21367
B08DA0DB-EEC0-4ED3-9FBE-59328B034102
Crematogaster quadriformis Roger
1863a.
Crematogaster quadriformis Roger
1863a: 207.
Crematogaster quadriformis var gracilior Forel
1901c.
NEW SYNONYMY
.
[w
syntypes
examined,
MHNG
;
Sao
Paulo
,
Brazil
]
Crematogaster quadriformis subsp. vezenyii Forel
1907b: 25.
NEW SYNONYMY
.
Crematogaster quadriformis r gracilior Forel
. Forel 1912c: 218.
Crematogaster (Orthocrema) quadriformis Roger
. Santschi 1918: 182.
Crematogaster (Orthocrema) quadriformis subsp. gracilior Forel
. Emery 1924a: 135.
Crematogaster (Orthocrema) quadriformis subsp. vezenyii Forel
. Emery 1924a: 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
Sao
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
Asuncion
. 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
.