Paraparatrechina glabra

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Paraparatrechina glabra
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Lasiini
Genus: Paraparatrechina
Species: P. glabra
Binomial name
Paraparatrechina glabra
(Forel, 1891)

Paratrechina glabra casent0067057 profile 1.jpg

Paratrechina glabra casent0067057 dorsal 1.jpg

Specimen Label

A forest species that feeds on small soil invertebrates. (Lampasona 2015)

Identification

LaPolla et al. (2010) - Elongate mesosoma (WL: 0.4–0.6), with pronotum rise of about 45° from anterior margin to dorsum; REL ≥ 20.

Compare with: Paraparatrechina myops and Paraparatrechina ocellatula. Workers of this species are easily distinguished from the other Malagasy Paraparatrechina by the presence of large eyes.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Malagasy Region: Madagascar (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Nomenclature

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

  • glabra. Prenolepis glabra Forel, 1891b: 92 (w.) MADAGASCAR. LaPolla, Cheng & Fisher, 2010: 16 (q.m.). Combination in Pr. (Nylanderia): Emery, 1914f: 422; in Paratrechina (Nylanderia): Emery, 1925b: 219; in Paraparatrechina: LaPolla, Brady & Shattuck, 2010a: 128.

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

LaPolla et al. (2010):

Description

Worker

(n=39): TL: 1.38–2.22; HW: 0.35–0.48; HL: 0.41–0.58; EL: 0.1–0.129; SL: 0.47–0.64; PW: 0.25–0.33; WL: 0.44–0.66; PDH: 0.21–0.28; PrFL: 0.35–0.48; PrFW: 0.1–0.134; GL: 0.476–0.91. Indices: CI: 75–102; REL: 20–26; SI: 104–140; FI: 24–36.

Head brownish-yellow to yellowish-brown, with darker segmental and mandibular margins; head slightly longer than broad. Head pubescence variable from appressed to suberect, with a shining cuticular surface. Scapes surpass posterior margin by about the length of the first 4 funicular segments; scapes with appressed pubescence. Mesosoma brownish-yellow to yellowish-brown and elongate; fine, appressed pubescence covers entire mesosomal dorsum. Pronotum rises about 45° from anterior margin to dorsum; propodeum possesses a short, angular dorsal face with a long declivitous face. Legs are often lighter in color than the mesosoma, with the trochanters and tarsi often whitish-yellow. The gaster is similarly colored as head and mesosoma.

Queen

(n=1): TL: 5.09; HW: 1.0; HL: 0.94; EL: 0.29; SL: 0.97; PW: 1.09; WL: 1.79; PDH: 0.58; PrFL: 0.88; PrFW: 0.27; GL: 2.36. Indices: CI: 108; REL: 28; SI: 96; FI: 30.

As in worker, with modifications expected for caste. Pubescence very dense, extending from dorsum to lateral regions of the mesosoma.

Male

(n=3): TL: 2.1–2.28; HW (including eyes): 0.52–0.53; HL: 0.45–0.47; EL: 0.2–0.22; SL: 0.33–0.34; PW: 0.38–0.38; WL: 0.69–0.71; PrFL: 0.52–0.56; PrFW: 0.11–0.12; GL (including parameres): 0.94–1.1. Indices: CI: 112–115; REL: 44–46; SI: 63; FI: 6–21.

Head dark brown, with bulging large eyes that occupy most of the lateral region of the head; three prominent ocelli present. Head slightly broader than long. Palps distinctly lighter than head in color. A dense layer of pubescence covers head. Scapes surpass posterior margin by less than half of the length of the first funicular segment; scapes are slightly lighter in color than surrounding head. Antennae 13-segmented. Mandible with apical tooth and indistinct basal angle. Mesosoma dark brown as in head; pronotum short and collar-like; mesonotum large, rounded anteriorly, overarching pronotum; mesosoma dorsum flat, with suberect setae. Declivity indistinct from propodeum; propodeum lower than mesonotum and scutellum. Gaster dark brown, covered with pubescence and scattered erect setae. Parameres elongate, with scattered erect setae, especially towards apices.

Type Material

3 syntype workers examined, MADAGASCAR (Musee d'Histoire Naturelle Genève).

References

  • Emery, C. 1914f. Les fourmis de la Nouvelle-Calédonie et des îles Loyalty. Nova Caled. A Zool. 1: 393-437 (page 422, Combination in Pr. (Nylanderia))
  • Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183: 1-302 (page 219, Combination in Paratrechina (Nylanderia))
  • Forel, A. 1891c. Les Formicides. [part]. In: Grandidier, A. Histoire physique, naturelle, et politique de Madagascar. Volume XX. Histoire naturelle des Hyménoptères. Deuxième partie (28e fascicule). Paris: Hachette et Cie, v + 237 pp. (page 92, worker described)
  • Lampasona, T. P. 2015. Malagasy Ant Pheidole longispinosa (Forel, 1891) Behavior as Regionally Dominant Ant Predator in Rainforest Environment (Hymenoptera: Formicidae). Journal of Insect Behavior. 28:359-368. doi:10.1007/s10905-015-9508-2
  • LaPolla, J.S., Cheng, C.H. & Fisher, B.L. 2010. Taxonomic revision of the ant genus Paraparatrechina in the Afrotropical and Malagasy regions. Zootaxa. 2387: 1-27.
  • Wheeler, W. M. 1922k. Ants of the American Museum Congo expedition. A contribution to the myrmecology of Africa. IX. A synonymic list of the ants of the Malagasy region. Bull. Am. Mus. Nat. Hist. 4 45: 1005-1055 (see also)