Hylomyrma plumosa

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Hylomyrma plumosa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Pogonomyrmecini
Genus: Hylomyrma
Species: H. plumosa
Binomial name
Hylomyrma plumosa
Pierce, Branstetter & Longino, 2017

Hylomyrma plumosa inbiocri001239432 p 1 high.jpg

Hylomyrma plumosa inbiocri001239432 d 1 high.jpg

Specimen Label

Nothing is known about the biology of this species.


Pierce et al. (2017) - At least some of dorsal setae branched, usually trifid. Though the plumose setae and short gastral striation of Hylomyrma plumosa are distinctive, the species is otherwise extremely similar to Hylomyrma dentiloba and Hylomyrma versuta.

Keys including this Species


Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb





The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • plumosa. Hylomyrma plumosa Peirce, Branstetter & Longino, 2017: 140, figs. 3, 5, 7 (w.) COSTA RICA.

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



(holotype worker): EL 0.211, EW 0.13, GSL 0.089, HFL 0.735, HL 0.799, HW 0.784, ML 1.042, OMD 0.109, PpL 0.253, PpW 0.3, PronW 0.573, SL 0.591, SPL 0.228, CI 98, GSI 9, OI 27, PpWI 119, SI 75, SPI 29. Measurements (range, n = 15): EL 0.202 - 0.235, EW 0.109 - 0.138, GSL 0.089 - 0.12, HFL 0.709 - 0.801, HL 0.793 - 0.871, HW 0.759 - 0.842, ML 0.991 - 1.137, OMD 0.095 - 0.12, PpL 0.227 - 0.285, PpW 0.293 - 0.331, PronW 0.55 - 0.618, SL 0.544 - 0.622, SPL 0.212 - 0.253, CI 93 - 99, GSI 8 - 11, OI 26 - 28, PpWI 114 - 133, SI 70 - 77, SPI 27 - 31.

Head subquadrate, occipital margin very slightly convex, occipital corners rounded. Clypeus bidentate, area between denticles mostly straight. Frontal lobes convex, ending anteriorly in a rounded angle, projecting over antennal insertions. Rugae on head running longitudinally and parallel, not intersecting; rugae interrupted occasionally by short gaps. Interrugal spaces microstriate, subopaque. Eye large, ending anteriorly in elongate tapering lobe. Scape tapered toward insertions and covered by abundant suberect non-branched hairs.

In profile view mesosoma convex, profile uninterrupted. Sides and dorsum of mesosoma reticulate rugose, interrugal spaces microstriate, subopaque. Propodeal spines relatively short, projecting posteriorly.

Peduncle of petiole present but not well developed. Sides and dorsum of petiole rugulose. Postpetiole subquadrate, covered on dorsum by longitudinal striae. Gaster mostly smooth and shining, striations on dorsum of tergum 1 short, but longer than Hylomyrma montana.

Body color reddish to reddish-brown, legs somewhat lighter, gaster darker brown. Dorsum of head, mesosoma, and gaster abundantly setose, at least some setae branched, bifid or more often trifid.

Type Material

Holotype worker: Costa Rica, Limón, Hitoy-Cerere, 9.66480 - 83.02346 ± 10 m, 250 m a.s.l., 10 June 2015 (collection code: ADMAC#Wa-E-02-2-38) California Academy of Sciences, unique specimen identifier CASENT0638700]. Paratype workers (n = 13): Same data as holotype Museum of Comparative Zoology, CASENT0638687; University of California, Davis, CASENT0638688; Universidad de Costa Rica, CASENT0638693; National Museum of Natural History, CASENT0638697; John T. Longino Collection, CASENT0638720, CASENT0638701, CASENT0638703, CASENT0638725, CASENT0638698, CASENT0638700, CASENT0638722, CASENT0638724, CASENT0638735.


This species is named for the distinctive branched hairs that distinguish it from all other Hylomyrma.