Simopone annettae

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Simopone annettae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dorylinae
Genus: Simopone
Species: S. annettae
Binomial name
Simopone annettae
Kutter, 1976

Simopone annettae casent0004507 p 1 high.jpg

Simopone annettae casent0004507 d 1 high.jpg

Specimen Labels

Specimens have been collected in forest habitats.

Identification

Key to Afrotropical Simopone Workers / Key to Known Afrotropical Simopone Queens

A member of the schoutedeni species group

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Cameroun (type locality), Central African Republic, Democratic Republic of Congo, Gabon, Ghana.

Distribution based on AntMaps

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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.

  • annettae. Simopone annettae Kutter, 1976b: 273, figs. 1-8 (q.) CAMEROUN. Bolton & Fisher, 2012: 18, figs. 1-3 (w.q.).

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

Description

Worker

Bolton and Fisher (2012) - PUTATIVE WORKER (not previously described). HL 0.79–0.86, HW 0.50–0.59, SL 0.23–0.28, EL 0.26–0.30, PW 0.39–0.45, AIIW 0.38–0.46, AIIL 0.37–0.44, AIIIW 0.45–0.56, AIIIL 0.46–0.56, WL 0.90–1.04, MFL 0.40– 0.46, CI 65–69, SI 43–48, EL/HW 0.48–0.51, EP 0.90–1.00, AIIW/AIIL 1.03–1.07, AIIIW/AIIIL 0.96–1.02 (5 measured).

With head in full-face view the outlines of the outer margins of the eyes fractionally fail to interrupt, or at most just interrupt, the outlines of the sides of the head at their midlength. ES 0.23–0.26 and width of head across broadest part of eyes 0.52–0.58. Frontal carinae extend back to level of anterior margins of eyes and are weakly divergent posteriorly. Cephalic dorsum with scattered broad, shallow punctures. Conspicuous ground sculpture is present between the eyes, organised into roughly longitudinal fine costulae or striolae between the punctures; ground sculpture fades out behind the level of the eyes. Leading edge of scape with a few setae, inclined toward the scape apex. Sides of head below and behind eyes with projecting short setae, inclined anteriorly. Cephalic dorsum with numerous short, curved setae and with a few pairs of longer setae present; longest setae occur on the frontal carinae and above the eye. Ventral surface of head with short setae. Mesosoma in dorsal view narrowest across the mesonotum (maximum width 0.37–0.46), broadest across the propodeum (maximum width 0.39–0.48). Anterior margin of pronotum weakly marginate. Propodeum with a fine weak carina between dorsum and declivity. Entire dorsum of mesosoma with widely spaced broad, shallow punctures. Mesopleuron with a few punctures and a distinct transverse sulcus. Propodeal declivity smooth except for a narrow band of disorganised superficial sculpture immediately below the dorsal carina. In profile, dorsal surfaces of mesosoma and all abdominal tergites with numerous posteriorly curved setae. Standing setae present on middle and hind tibiae. AII (petiole) in dorsal view with a weak transverse carina both anteriorly and posteriorly, the sides convex, broadest behind the midlength; the width across the anterior margin is somewhat less than across the posterior margin. Dorsum of AII with large, shallow punctures whose diameters are mostly equal to or greater than the distances that separate them. On tergite of AIII the punctures are of similar size but slightly more crowded, so that some are adjacent. AII broader than long, AIII about as broad as long, AIV distinctly broader than long (width 0.44–0.60, length 0.47–0.54; AIVW/AIVL 1.19–1.24). Head capsule and body black; scapes and funiculi light brown; femora and tibiae brown.

Queen

Bolton and Fisher (2012) - (alate gyne). Answers the description of the worker and is about the same size, but winged and with a full complement of flight sclerites. HL 0.90, HW 0.61, SL 0.29, EL 0.30, PW 0.49, AIIW 0.47, AIIL 0.45, AIIIW 0.56, AIIIL 0.63, CI 68, SI 48, EL/HW 0.49, EP 1.18, AIIW/AIIL 1.04, AIIIW/AIIIL 0.89; mesoscutum maximum width 0.52, mesoscutum maximum length 0.32.

Type Material

Bolton and Fisher (2012) - Holotype queen (alate), Cameroun: Fo-Tabe (9° 35’ östl. Länge, 5° 31’ nördl. Breite), 11.i.1937 (H. Kutter) (Naturhistorisches Museum, Basel) [examined].

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.
  • Kutter, H. 1976b. Beitrag zur Kenntnis der Gattung Simopone (Hym. Formicidae Subfam. Cerapachyinae resp. Ponerinae). Mitt. Schweiz. Entomol. Ges. 49: 273-276 (page 273, figs. 1-8 queen described)