LaPolla & Fisher, 2011
Nothing is known about the biology of Nylanderia umbella.
LaPolla et al. (2011) - Head width less than 0.51 mm; head, mesosoma, and gaster dark brown, contrasting sharply with yellowish-brown antennae, mandibles, mesocoxae, metacoxae, and legs; very short, angular, propodeal dorsal face.
This is among the darkest of the Afrotropical species, with strongly contrasting antennae, coxae, and legs. Based on overall similarities in size and shape, N. umbella appears closely related to N. boltoni and N. scintilla.
Keys including this Species
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
The queen and male castes are currently unknown for this species.
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- umbella. Nylanderia umbella LaPolla & Fisher, in LaPolla, Hawkes & Fisher, 2011: 24, figs. 58-60, 85 (w.) CAMEROUN.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Measurements (n = 3): TL: 2.1–2.4; HW: 0.49–0.51; HL: 0.59–0.61; EL: 0.14–0.16; SL: 0.62–0.64; PW: 0.35–0.38; WL: 0.62–0.69; GL: 0.92–1.2
Indices: CI: 80–84; REL: 23–27; SI: 123–130
Overall dark brown, with lighter brown to yellow mandibles, antennae, and legs; cuticle smooth and shining; procoxae dark brown, with mesocoxae and metacoxae yellow-brown to yellow in color. Head with a dense layer of pubescence; posterior margin with rounded posterolateral corners, slightly emarginate medially; scapes surpass posterior margin by about the length of the first two funicular segments; scapes with scattered erect acrosetae and a dense layer of pubescence (SMC = 13–16). Mesosoma with erect macrosetae of varying lengths concentrated on posterior pronotum and mesonotum (PMC = 3–5; MMC = 2); layer of pubescence covers mesosomal notum; metanotal area compact; dorsal face of propodeum angular and low (lower than mesonotum) with very short dorsal face and longer declivitous face; propodeum dorsum with pubescence; declivity smooth and shining with no pubescence. Gaster with abundant erect macrosetae and a dense layer of pubescence.
The species epithet umbella (L. = shade or shadow) is in reference to the dark brown coloration of this species.
- 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.