Gnamptogenys bulbopila

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Gnamptogenys bulbopila
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ectatomminae
Tribe: Ectatommini
Genus: Gnamptogenys
Species: G. bulbopila
Binomial name
Gnamptogenys bulbopila
Lattke, 2004

Nothing is known about the biology of this species.

Identification

Lattke (2004) - Head elongate with evenly convex lateral margins in frontal view, posterior margin concave, frons punctate over smooth cuticle; scape punctate with scattered brief longitudinal strigulae, abundant semi erect hairs present, each hair basally bulbous, then gradually tapers apically.

This species is unique among Gnamptogenys in having hairs on the scape that have a bulbous base and gradually taper toward the apex. These specialized hairs are only found on the scapes and not elsewhere on the ant.

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Philippines (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Not much is known about the the biology of Gnamptogenys bulbopila. We can speculate that the biology of this species is similar to other species of the genus. Gnamptogenys are predatory ponerine ants that inhabit tropical and subtropical mesic forests. Nesting is typically at ground level in rotten wood or leaf litter. Some exceptions include species that are arboreal, a dry forest species and species that nests in sandy savannahs. Colony size tends to be, at most, in the hundreds. Queens are the reproductives in most species. Worker reproduction is known from a few species in Southeastern Asia. Generalist predation is the primary foraging/dietary strategy. Specialization on specific groups (millipedes, beetles, other ants) has developed in a few species.

Castes

Queen and male. Unknown.

Nomenclature

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

  • bulbopila. Gnamptogenys bulbopila Lattke, 2004: 96, fig. 18 (w.) PHILIPPINES.

Description

Worker

Lattke 2004 Gnamptogenys fig 16-18

Metrics. Holotype: HL 1.60, HW 1.18, ML 0.79, SL 1.45, ED 0.29, WL 2.20 mm. CI 0.74, SI 1.23, MI 0.67, OI 0.20. Head elongate with evenly convex lateral margins in frontal view, posterior margin concave, anterior margin of clypeal lamella with median convex lobe, laterally curved; frons punctate over smooth cuticle; clypeus with longitudinal ridges that extend partially onto lamella, shallow median sulcus present; mandibles with low strigulae; occipital lobes lacking; occipital lamella well developed; scape punctate with scattered brief longitudinal strigulae, abundant suberect hairs present, each hair basally bulbous, then gradually tapering apically.

Mesosoma mostly punctate over smooth cuticle; humeral angle poorly developed; mesosomal dorsal margin broadly convex in lateral view; propodeal declivity concave in lateral view, propodeal declivitous face mostly smooth with fine rugosities anterad; propodeal denticle small, triangular. Petiolar node with convex dorsal margin in lateral view, anteriorly broadly convex, higher posterad than anterad; ventral process forming sharply pointed anteriorly projecting triangular lobe; postpetiolar dorsum punctate over smooth cuticle, sternum punctate with scattered low strigulae; dorsum of abdominal segment 4 mostly smooth with scattered punctulae, sternum strigulose. Fore coxa transversely strigulose in lateral view; fore tarsus opposite strigil with single stout seta followed apically by row of smaller setae; metacoxal tooth low, triangular. Dorsum of thorax and abdominal segments 1-4 with scattered erect to subdecumbent hairs. General body color ferruginous.

Type Material

Holotype worker. Philippine Islands, Misamis Oriental, Minubanan, 1050-1200m, 5/9-iv-1961, H. Torrevillas. Deposited in Los Angeles County Museum of Natural History.

Etymology

The species epithet is a compound name derived from the Latin words for a fleshy underground stem or bulb, bulbus, and for hair, pilus (m). It alludes to the uniquely shaped hairs on the scapes.

References

  • Lattke, J. E. 2004. A Taxonomic Revision and Phylogenetic Analysis of the Ant Genus Gnamptogenys Roger in Southeast Asia and Australasia (Hymenoptera: Formicidae: Ponerinae). University of California Publications in Entomology 122: 1-266 (page 96, fig. 18, worker described)