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Species: Acromyrmex ameliae   De Souza et al., 2007 

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Taxonomic History (provided by Barry Bolton, 2023)

Acromyrmex ameliae De Souza et al., 2007 PDF: 252, figs. 1, 3, 5, 7, 9-14 (w.q.m.) BRAZIL (Minas Gerais). Neotropic. Primary type information: Primary type material: holotype queen. Primary type locality: Brazil: Minas Gerais, Paraopeba, 6.x.2003 (D.J. Souza). Primary type depository: MZSP. Secondary type information: Secondary type material: 18 paratype workers, 20 paratype queens, 21 paratype males. Secondary type locality: 1 paratype male with same data as holotype, 18 paratype workers, 20 paratype queens, 20 paratype males with same data as holotype but 20.iv.2004 (I.M.F. Soares). Secondary type depositories: CPDC, LECV, MZSP. AntCat AntWiki HOL

Taxon Page Images:

An Acromyrmex subterraneus workers carries an A. ameliae queen in a laboratory colony (Image by José Lino Neto, 2011).

// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Brazil
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Taxonomic Treatment (provided by Plazi)

Treatment Citation: De Souza, D. J., Soares, I. M. F. & Della Lucia, T. M. C., 2007, Acromyrmex ameliae sp. n. (Hymenoptera: Formicidae): A new social parasite of leaf-cutting ants in Brazil., Insect Science 14, pp. 251-257

Acromyrmex ameliaeHNS sp.n. (Figs. 1, 3, 5, 7, 9, 14)

Types Holotype queen labeled'Brazil: Paraopeba MG/ 06 Oct 2003/ D. J. Souza'(MZUSP). Measurements (in mm): HL = 1.5; HW = 1.4; ML = 0.7; WL = 2.6; SL = 1.5; ED = 0.4.

Derivation of specific name This species is named after Amelia Maria de Souza, mother of the first author of this work.

© 2007 The Authors Insect Science (2007) 14, 251�257 Journal compilation © Institute of Zoology, Chinese Academy of Sciences

Description The measurements obtained from 20 queens are presented in Table 1. This new species has a palpal formula of 4, 2 and 11 antennal segments as is typical for attine ants. Acromyrmex ameliaeHNS queens have large and convex eyes and the inferior pronotal spines are straight and forward-positioned as in the host species. The color of the analyzed parasite queens vary from brownish to brownish-black and this is not associated with the subspecies of host ants since one can find queens of the parasite of either color in a single nest. Worker color is the only character that is presently used to separate the two host subspecies: A. subterraneus subterraneusHNS and A. subterrraneus brunneusHNS. The latter has a brownish-black color whereas the former is light brown to yellow (Gon9alves, 1961). The queens of A. ameliaeHNS are much smaller than those of its hosts, with a WL ~ 0.6 as great (Table 1). Acromyrmex ameliaeHNS further has a more abundant pilosity with thicker and longer hairs on the gaster, on the dorsal portion of the alitrunk and on the anterior portion of the head, in comparison to that on the host subspecies. The parasite queen also has prominent ridges on the head (Figs. 1 and 2) and on the first segment of the gaster and expansions on the anteroventral margin of the postpetiole that are not seen on the host subspecies (Figs. 5 and 6). The tubercles on the gaster of A. ameliaeHNS are more or less ordinated in four longitudinal lines similar to the host species. However, these tubercles are very much reduced and less prominent when compared to those of the hosts.

Table 1 Head length (HL), head width (HW) and Weber's length (WL) for the social parasite A. ameliaeHNS and its hosts A. subterraneus subterraneusHNS and A. subterraneus brunneusHNS. All measurements are in mm.


Specimen Habitat Summary

Collected most commonly using these methods: 2 times Manual sampling.

Collect Date Range: collected between 2003-01-01 00:00:00.0 and 2010-09-05 00:00:00.0

Type specimens:

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