Simopone brunnea

Every Ant Tells a Story - And Scientists Explain Their Stories Here
Jump to navigation Jump to search
Simopone brunnea
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dorylinae
Genus: Simopone
Species: S. brunnea
Binomial name
Simopone brunnea
Bolton & Fisher, 2012

Simopone brunnea casent0004504 p 1 high.jpg

Simopone brunnea casent0004504 d 1 high.jpg

Specimen Labels

One set of the few collections of this species was found in coastal lowland rainforest, in the forest margin adjacent to a river.

Identification

A member of the schoutedeni species group

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Democratic Republic of Congo, Gabon (type locality).


Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Little is known about the biology of most species of Simopone. Specimens are rarely collected, and the number of species known only from workers is telling in regards to a lack of nest samples. Species are almost entirely arboreal but on occasion foraging workers are found on the ground or in rotten logs. Prey records are extremely sparse. They consist only of Crematogaster brood by Simopone vepres, and the brood of Terataner by Simopone sicaria. Nevertheless, these two records support the general supposition by Brown (1975) that most or all members of tribe Cerapachyini prey on other ants, or more probably the brood of other ants, but actual records are extremely rare. (Bolton and Fisher 2012)

Castes

Worker

Nomenclature

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

  • brunnea. Simopone brunnea Bolton & Fisher, 2012: 20, figs. 4-6 (w.) GABON.

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

Description

Worker

Holotype. HL 0.74, HW 0.46, SL 0.22, EL 0.24, PW 0.34, AIIW 0.34, AIIL 0.36, AIIIW 0.41, AIIIL 0.44, WL 0.86, MFL 0.35, CI 62, SI 48, EL/HW 0.52, EP 0.79, AIIW/AIIL 0.94, AIIIW/AIIIL 0.93.

With head in full-face view the midpoints of the outer margins of the eyes do not interrupt the outlines of the sides of the head. ES 0.20 and minimum distance between eyes 0.18. Frontal lobes raised away from level of clypeus. Frontal carinae extend back to level of anterior margins of eyes and are weakly divergent posteriorly. Cephalic dorsum mostly glossy, with scattered broad, shallow punctures and vestiges of weak longitudinal ground sculpture between the eyes. Leading edge of scape with a few setae, inclined toward the scape apex. Sides of head below and behind eyes with very few, short, inconspicuous projecting setae, inclined anteriorly. Cephalic dorsum with a pair of longer setae close to level of posterior margins of eyes and with a few shorter, curved setae near the posterior margin (some abrasion may have occurred). Mesosoma in dorsal view narrowest across the mesonotum (maximum width 0.34), broadest across the propodeum (maximum width 0.36). Anterior margin of pronotum with a weak transverse carina; promesonotal suture only feebly marked. Propodeum with a fine weak carina between dorsum and declivity. Entire dorsum of mesosoma with widely scattered broad, shallow punctures. Mesopleuron almost smooth, with just 1–2 punctures and a distinct transverse sulcus. In profile, dorsal surfaces of mesosoma and all abdominal tergites with short, posteriorly curved setae that are subdecumbent to decumbent. Middle and hind tibiae with 1–2 standing setae. AII (petiole) in dorsal view with a weak transverse carina both anteriorly and posteriorly; sides of AII extremely feebly convex, almost straight, and very weakly divergent posteriorly so that the width across the anterior margin is slightly less than across the posterior margin. Dorsum of AII with very sparse, minute punctures only. On tergite of AIII the punctures are also minute and very widely spaced, so that the distances between them are much greater then their diameters. AII fractionally longer than broad, AIII longer than broad, AIV slightly broader than long. Head capsule and entire body glossy dark brown; antennae and legs somewhat lighter.

Type Material

Holotype worker, Gabon: Prov. Ogoové-Maritime, Rés. Monts Doudou, 24.3 km 307° NW Doussala, 350 m., 6–7.iii.2000, Malaise trap, GA00M38, coastal lowland rainforest, forest margin along river, CASENT0004504 (S. van Noort) (California Academy of Sciences).

References

  • Bolton, B. & Fisher, B.L. 2012. Taxonomy of the cerapachyine ant genera Simopone Forel, Vicinopone gen. n. and Tanipone gen. n. (Hymenoptera: Formicidae). Zootaxa, 3283, 1–101.