Nylanderia esperanza

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Nylanderia esperanza
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Lasiini
Genus: Nylanderia
Species: N. esperanza
Binomial name
Nylanderia esperanza
LaPolla & Kallal, 2019

Nylanderia esperanza F28.jpg

Nylanderia esperanza F30.jpg

This species has been collected from leaf-litter and sifted soil

Identification

LaPolla and Kallal (2019) - Brownish-yellow to yellow with distinctly darker brownish-yellow to brown macrosetae; propodeal dorsal face anteriorly flat not rounded or higher than mesonotum.

Compare with: Nylanderia guatemalensis

This species is most likely to be confused with N. guatemalensis. In fact, for some time, we considered it as variation within N. guatemalensis. But upon closer inspection there are two relatively easy ways to distinguish the two species from each other. The propodeal dorsal face of N. esperanza is distinctly flat not rounded or higher than the mesonotum as is seen in N. guatemalensis. Additionally, N. esperanza possesses macrosetae on the pronotum that are both abundant and distinctly of varying heights. In N. guatemalensis, the macrosetae are neither as abundant nor of such distinctly varying heights.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Dominican Republic (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • esperanza. Nylanderia esperanza LaPolla & Kallal, 2019: 417, figs. 28-30 (w.) DOMINICAN REPUBLIC.

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

Description

Worker

(n=4): TL 2.30–2.70; HW: 0.51–0.61; HL: 0.59–0.75; EL: 0.13–0.15; SL: 0.67– 0.76; WL: 0.74–0.88; GL: 0.85–1.04; SMC: 20–29; PMC: 5–6; MMC: 3–4. indices: CI: 81–90; REL: 20–24; SI: 124–137; SI2: 18–21.

Head: sides of head in full face view nearly parallel; posterolateral corners rounded; posterior margin straight and slightly emarginate medially; anterior clypeal margin relatively convex; ocelli absent; eye well-developed. Mesosoma: in lateral view, pronotum subangular; anterior margin of mesonotum more or less even with posterior pronotal margin; metanotal area with a short flat area before spiracle; dorsal face of propodeum relatively flat and short immediately posterior to metanotal area; dorsal face of propodeum shorter than declivitous face. Color and pilosity: body brownish-yellow; head and gaster sometimes slightly darker yellow; macrosetae on head, mesosoma and gaster distinctly darker brownish-yellow to brown contrasting with body; macrosetae on scapes yellow to white; macrosetae on pronotum abundant and of varying heights; cephalic pubescence sparse; mesosoma with pubescence dorsally on pronotum, mesonotum and anterior portion of propodeum, gastral tergites I & II with dense pubescence.

Type Material

Holotype worker, DOMINICAN REPUBLIC: Parque Nacional del Este nr. Boca de Yuma, 18° 21.872’N, 68° 37.077’ W, elev. 8 m, sifted soil under rocks, 02.viii.2009, J.S. LaPolla & S.A. Schneider (National Museum of Natural History), 2 paratype workers same locality data as holotype (specimens are from the same nest as holotype). 3 paratype workers, DOMINICAN REPUBLIC: Parque Nacional del Este, N 18° 19.884, W 68° 48.693’, elev. 36m, from sifted litter, 30 March 2004, L.R. Davis (300304-14) (NMNH & Museum of Comparative Zoology).

Etymology

Species epithet is a Spanish given name (noun) meaning hope.

Determination Clarifications

This species was also included within the phylogeny of Gotzek et. al (2012) (listed as Nylanderia n.sp. DR3), where it is nested well within a clade of West Indian Nylanderia and sister to a clade of Nylanderia bibadia + Nylanderia metacista. More recent unpublished phylogenomics data suggests this species is the sister to Nylanderia caerula.

References

References based on Global Ant Biodiversity Informatics

  • LaPolla J. S., and R. J. Kallal. 2019. Nylanderia of the World Part III: Nylanderia in the West Indies. Zootaxa 4658: 401-451.