Nylanderia usambarica

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Nylanderia usambarica
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Lasiini
Genus: Nylanderia
Species: N. usambarica
Binomial name
Nylanderia usambarica
LaPolla, Hawkes & Fisher, 2011

Nylanderia usambarica casent0235343 p 1 high.jpg

Nylanderia usambarica casent0235343 d 1 high.jpg

Specimen Labels

Known only from the type locality, specimens were found in a pitfall trap in primary forest.


LaPolla et al. (2011) - Abundant macrosetae of varying lengths on pronotum (PSC = 10–22); macrosetae on head, mesosoma and legs dark and contrasting strongly with the much lighter cuticle; propodeal dorsum not domed.

Compare with: Nylanderia luteafra, Nylanderia natalensis and Nylanderia jaegerskioeldi

Most likely to be confused with callows of N. natalensis and N. jaegerskioeldi but it can be separated from these by the higher PMC and the distinctly indented posterior margin of the head. While the color of N. usambarica is similar to that of N. luteafra, these species can be readily distinguished by the strongly domed propodeal profile of the latter. N. usambarica has the highest PMC of any Afrotropical Nylanderia species currently known.

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: -4.91456° to -4.91456°.

Tropical South

Distribution based on Regional Taxon Lists

Afrotropical Region: United Republic of Tanzania.

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 queen and male castes are currently unknown for this species.


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

  • usambarica. Nylanderia usambarica LaPolla, Hawkes & Fisher, 2011: 24, figs. 61-63, 86 (w.) TANZANIA.


Measurements (n = 6): TL: 2.3–2.8; HW: 0.55–0.64; HL: 0.67–0.74; EL: 0.14–0.16; SL: 0.73–0.80; PW: 0.41–0.47; WL: 0.77–0.90; GL: 0.90–1.4

Indices: CI: 82–87; REL: 20–22; SI: 123–133

Overall golden yellow-brown, with lighter golden yellow antennae and legs; head and gaster slightly darker than mesosoma; legs nearly uniform in color, with coxae and trochanters slightly lighter than the remaining segments; cuticle smooth and shining but with faint, almost effaced shagreening, which is more noticeable on lateral propodeum and gaster; macrosetae on head, mesosoma and legs dark and contrasting strongly with the much lighter cuticle; macrosetae on scapes lighter. Head dorsally with abundant macrosetae and a layer of fine pubescence which becomes sparse anterolaterally; posterior margin distinctly emarginate medially; posterolateral corners strongly rounded and sides convex, giving the head a distinctly rounded appearance in full face view; scapes surpass posterior margin of head by about the length of the first 3–4 funicular segments; scapes with scattered erect macrosetae and a dense layer of pubescence (SMC = 24–32). Mesosoma with erect macrosetae of varying lengths on pronotum and mesonotum (PMC = 10–22; MMC = 3–4); pubescence sparse and scattered on pronotum and mesonotum; metanotal area compact; dorsal face of propodeum short and low (lower than mesonotum), rounding broadly into the longer declivitous face; propodeal dorsum and sides with pubescence; declivity smooth and shining with no pubescence. Gaster with erect macrosetae and a layer of sparse pubescence.

Type Material

Holotype worker, TANZANIA: Tanga Region, Nilo Forest Reserve, 1006 m, 4.91456 S, 38.67712 E, 1–4.ix.2005, CEPF-4.4-F24, (P. Hawkes, J. Makwati, R. Mtana) (South African Museum) (SAM-HYM-C020684); 11 paratype workers, 9 same label data as holotype, 1 same data but CEPF-4.2-F35, 1 same data but CEPF-4.4-F33 (National Museum of Natural History, California Academy of Sciences, NMKE, SAMC)


The specific epithet usambarica refers to the East Usambara mountain range in which the type series was collected.


  • LaPolla, J.S., Hawkes, P.G. & Fisher, B.L. (2011) Monograph of Nylanderia (Hymenoptera: Formicidae) of the World, Part I: Nylanderia in the Afrotropics. Zootaxa 3110: 10–36.