Vitsika brevis

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Vitsika brevis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Vitsika
Species: V. brevis
Binomial name
Vitsika brevis
(Bolton & Fisher, 2014)

Myrmisaraka brevis casent0494587 p 1 high.jpg

Myrmisaraka brevis casent0494587 d 1 high.jpg

Specimen Labels

V. brevis appears to nest in dead twigs on the surface of the ground in rainforest. It has also been retrieved from leaf litter samples and has been discovered foraging on low vegetation.

Identification

Very similar to, and mostly matching the description of, Vitsika producta, but with an obviously 3-segmented antennal club, in which funiculus segment 8 is only 1.00–1.25 times longer than broad, and funiculus segment 9 is relatively elongated, 1.70–2.00 × longer than funiculus segment 8. The antennal scape is relatively shorter in brevis, SI 99–111, than in producta, SI 115–129. In addition, the head capsule of producta averages relatively slightly narrower, CI 75–80, as opposed to CI 79–85 in brevis.

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

Known only from the worker caste.

Nomenclature

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

  • brevis. Myrmisaraka brevis Bolton & Fisher, 2014: 35, figs. 30-32, Map 132 (w.) MADAGASCAR.
    • Combination in Vitsika: Fisher & Bolton, 2016: 448.

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

Description

Worker

(holotype in parentheses). TL 4.6–5.1 (5.0), HL 1.00–1.10 (1.02), HW 0.79–0.92 (0.83), CI 79–85 (81), SL 0.80–0.96 (0.88), SI 99–111 (106), PW 0.58–0.68 (0.62), WL 1.30–1.42 (1.34), MfL 1.02–1.18 (1.10) (20 measured).

Type Material

Holotype worker (top specimen of three on pin), Madagascar: Prov. Antsiranana, P.N. Marojejy, 27.6 km. 35° NE Andapa, 775 m., 14°26.1’S, 49°45.6’E, 15–18.xi.2003, ex dead twig above ground, rainforest, BLF 9049, CASENT0494587 (Fisher et al.) (California Academy of Sciences). Paratypes. 2 workers on same pin as holotype; 3 workers with same data as holotype but CASENT0494588; 3 workers with same data as holotype but CASENT0494589 (CASC).

References

  • Bolton, B. & Fisher, B.L. 2014. The Madagascan endemic myrmicine ants related to Eutetramorium (Hymenoptera: Formicidae): taxonomy of the genera Eutetramorium Emery, Malagidris nom. n., Myrmisaraka gen. n., Royidris gen. n., and Vitsika gen. n. Zootaxa 3791:1–99. doi:10.11646/zootaxa.3791.1.1
  • Fisher, B. L.; Bolton, B. 2016. Ants of Africa and Madagascar, a guide to the genus. University of California Press. 503pp.