Aphaenogaster inermita

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Aphaenogaster inermita
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Aphaenogaster
Species group: testaceopilosa
Species: A. inermita
Binomial name
Aphaenogaster inermita
Bolton, 1995

Aphaenogaster inermita casent0280968 p 1 high.jpg

Aphaenogaster inermita casent0280968 d 1 high.jpg

Specimen Labels


Hunting singly during daytime and nesting under stones in arid coastal areas on Malta (Schembri & Collingwood 1981; Boer, 2013).


A member of the A. testaceopilosa group. By the absence of propodeal spines or teeth, the workers cannot be confused with other species. Moreover, the setae are fine instead of bristle-like, as in most species. Gynes and males unknown. (Boer 2013)

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: 37.97626° to 37.96323°.

Tropical South

Distribution based on Regional Taxon Lists

Palaearctic Region: Italy (type locality), Malta.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.




The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • inermis. Aphaenogaster semipolita var. inermis Santschi, 1933c: 390.
    • [First available use of Aphaenogaster testaceopilosa subsp. semipolita var. inermis Emery, 1908c: 320 (w.) ITALY; unavailable (infrasubspecific) name.]
    • [Junior primary homonym of Aphaenogaster (Ischnomyrmex) araneoides var. inermis Forel, 1899c: 60.]
    • As unavailable (infrasubspecific) name: Emery, 1916b: 131; Emery, 1921f: 63; Menozzi, 1921: 26; Baroni Urbani, 1971c: 44.
    • Status as species: Schembri & Collingwood, 1981: 423; Agosti & Collingwood, 1987b: 269 (in key); Poldi, et al. 1995: 3; Petrov, 2006: 89 (in key) (error).
    • Replacement name: Aphaenogaster inermita Bolton, 1995b: 70.
  • inermita. Aphaenogaster inermita Bolton, 1995b: 70.
    • Replacement name for Aphaenogaster semipolita var. inermis Santschi, 1933c: 390. [Junior primary homonym of Aphaenogaster (Ischnomyrmex) araneoides var. inermis Forel, 1899c: 60.]
    • Status as species: Bolton, 1995b: 70; Boer, 2013: 77 (redescription); Borowiec, L. 2014: 13; Lebas, et al. 2016: 250.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.



Boer (2013) - Lateral sides of mesosoma with weak longitudinal rugulae, on the propodeal dorsum absent or rugulose. Head longitudinally rugulose with some cross-connections. Terminal side of propodeum, opposite of petiole rugulose and punctate. Petiolar nodes punctate. Dorsal side of postpetiole with longitudinal costulae. Microstriae on dorsal side of gaster dense, less pronounced than in other species. Dorsal side of postpetiole matt. Pronotum matt glossy. Dorsal side of gaster matt satin. Terminal side of propodeum, opposite of the petiole matt glossy. Antennal club 4-segmented. Propodeal spines absent. Terminal side of propodeum oblong, without any spine, generally slightly dentate. All hairs not bristle-like as in most species. The fine hairs of the underside of the head and anterior side of the first coxae have the same shape as those of the mesosoma.

Measurements (n = 10). CI 78–81 (80); CL 1.22–1.41 (1.28) mm; CW 0.95–1.15 (1.02) mm; PHI 25–29 (27); PI 66–86 (77); PPPI 47–51 (50); PWI 20–24 (22); RPH 110–141 (126); SI 139–145 (142); SL 1.36–1.59 (1.44) mm.

Type Material


References based on Global Ant Biodiversity Informatics

  • Boer P. 2013. Revision of the European ants of the Aphaenogaster testaceopilosa-group (Hymenoptera: Formicidae). Tijdschrift voor Entomologie 156: 57-93.
  • Borowiec L. 2014. Catalogue of ants of Europe, the Mediterranean Basin and adjacent regions (Hymenoptera: Formicidae). Genus (Wroclaw) 25(1-2): 1-340.
  • Emery C. 1916. Fauna entomologica italiana. I. Hymenoptera.-Formicidae. Bullettino della Società Entomologica Italiana 47: 79-275.
  • Gomez K. 2017. Two species of exotic ants (Hymenoptera: Formicidae) new to Malta. Boletin de la Sociedad Entomologica Aragonesa (S.E.A.) 61: 233-235.
  • Menozzi C. 1921. Formiche dei dintorni di Sambiase di Calabria. Bollettino del Laboratorio di Zoologia Generale e Agraria della Reale Scuola Superiore d'Agricoltura. Portici. 15: 24-32.