Azteca sericea (Mayr,

Longino, J. T., 2007, A taxonomic review of the genus Azteca (Hymenoptera: Formicidae) in Costa Rica and a global revision of the aurita group., Zootaxa 1491, pp. 1-63: 61

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Azteca sericea (Mayr


Azteca sericea (Mayr  HNS  1866)

Iridomyrmex sericeus Mayr  HNS  1866:498. Syntype workers: Mexico, in pseudobulbs of Schomburgkia tibicinus (Heller)  [ NHMW]  (examined).

Liometopum instabile (F. Smith)  HNS  (part): Mayr 1878:870.

Azteca sericea Mayr  HNS  : Emery 1893:134.

Azteca instabilis var. mexicana Emery  HNS  , 1896a:3 [n. nov. for Iridomyrmex xanthochrous Mayr  HNS  1866:497 (not Roger 1863)]. Syntype workers: Mexico (Norton) [ NHMW]  (examined). NEW SYNONYMY.

The history of the name mexicana  HNS  is complicated. Roger (1863) described A. xanthochroa  HNS  based on a single queen from Mexico. Mayr (1866) described workers from Mexico as the workers of xanthochroa  HNS  . Emery (1893) examined these workers, identifying them as xanthochroa  HNS  and making xanthochroa  HNS  a variety of instabilis  HNS  . Emery (1896a), having discovered that xanthochroa  HNS  was a species distinct from instabilis  HNS  , reidentified these same workers as a new variety, instabilis var. mexicana  HNS  . In the Mayr collection, under " instabilis Sm. var. xanthochroa Rog.  HNS  ," are several pins with Emery determination labels. The only Mexican material among these are two workers, with labels "Mex, Norton," identified by Emery as " A. instabilis var. xanthochroa  HNS  ." These are the syntypes of mexicana  HNS  , and when I examined them I added red labels stating " syntypus Az. mexicana Emery  HNS  1896, det. J. Longino 1990." I compared the workers directly with the types of A. sericea  HNS  .

To confuse matters, a series labeled "Mexico, No. 211," with red type labels indicating they are types of instabilis mexicana  HNS  has been distributed to American museums. Specimens from LACM have an additional label indicating they are from the Pergande collection. I have examined specimens of this series from MCZC and LACM; and AMNH type labels on the MCZC material suggest there is also material at AMNH. These are not syntypes of mexicana  HNS  . I identify them as A. pittieri  HNS  .


Austria, Wien, Naturhistorisches Museum Wien