Simopone latiscapa

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Simopone latiscapa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dorylinae
Genus: Simopone
Species: S. latiscapa
Binomial name
Simopone latiscapa
Bolton & Fisher, 2012

Simopone latiscapa casent0004517 p 1 high.jpg

Simopone latiscapa casent0004517 d 1 high.jpg

Specimen Labels

Known from only three workers and two queens; the Leston series from Ghana (The Natural History Museum) consists of one of each and the other queen, from Sierra Leone, was captured after it had flown into a house, though it was dealate when discovered.

Identification

A member of the emeryi species group. This spectacular species is immediately identified by its enormously hypertrophied antennal scapes in both worker and queen.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Gabon, Ghana (type locality), Sierra Leone.


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.

  • latiscapa. Simopone latiscapa Bolton & Fisher, 2012: 29, figs. 16-18 (w.q.) GHANA.

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). HL 1.80–1.96 (1.96), HW 1.32–1.48 (1.46), SL 0.62–0.70 (0.68), EL 0.54–0.62 (0.60), PW 1.00–1.14 (1.12), AIIW 0.94–1.09 (1.09), AIIL 0.90–1.03 (1.03), AIIIW 1.16–1.35 (1.35), AIIIL 1.03–1.20 (1.20), WL 2.00–2.30 (2.30), MFL 1.04–1.20 (1.20), CI 73–76 (74), SI 47 (47), EL/HW 0.41–0.42 (0.41), EP 1.82–1.91 (1.91), AIIW/AIIL 1.04–1.06 (1.06), AIIIW/AIIIL 1.13–1.14 (1.13) (3 measured).

Clypeus strongly reflexed so that the clypeo-labral junction is conspicuously below and far behind the anteriormost point of the apparent anterior margin. In full-face view the frontal lobes only feebly elevated on each side of the clypeus. Frontal carinae extend back almost or just to the level of the anterior margins of the eyes. Eyes located well behind the cephalic midlength, EP > 1.50; in full-face view outer margins of eyes just fail to break the outlines of the sides at their midlengths. Sides of head behind eyes shallowly convex, in front of eyes distinctly concave. Scape enormously flattened and extremely broad, SW/SL 0.79–0.81, appearing disproportionately massive in full-face view. Leading edge of scape with inclined projecting setae present, and leading edge abruptly narrowed basally to allow scape to move relative to the frontal lobes. Sides of head below and behind eyes with projecting short setae present; cephalic dorsum with standing setae present. Cephalic dorsum glossy, with scattered punctures, the surface between the punctures with minute and faint microreticular patterning. In dorsal view pronotum with a conspicuous anterior carina that is reinforced posteriorly by a number of short, longitudinal cuticular ribs; humeri not sharply angulate; promesonotal suture with short cuticular ribs. Metanotal groove vestigial to absent. Entire dorsum of mesosoma sculptured as the head but the superficial microreticulation fainter and tending to fade out posteriorly. Dorsal surfaces of mesosoma with numerous curved setae that vary from suberect to almost decumbent. AII (petiole) without a distinct transverse anterior carina, instead with an accentuated angle where anterior and dorsal surfaces meet; posteriorly with a very weak carina. In dorsal view the sides of AII shallowly convex, broadest at about the midlength then converging posteriorly; posterior corners produced into a small, bluntly triangular outcurved prominence on each side. Anteroventral process of AII a recurved hook or spur. AII in dorsal view about as long as broad, AIII and AIV distinctly broader than long; maximum width of AIV 1.40–1.60, maximum length 1.04–1.28. Abdominal tergites, from AII to apex, with numerous curved setae that are mostly subdecumbent to decumbent; more elevated on posterior margin of each tergite; sternites from AIII to apex also with setae. Femora and tibiae of middle and hind legs with numerous, very conspicuous, elevated setae. Pygidial fork short and stout, the pygidial margins on each side with a row of 9–10 spiniform denticles. Full adult colour of head and body black.

Queen

(dealate gyne). HL 1.72–1.76, HW 1.27–1.34, SL 0.60–0.63, EL 0.52–0.56, PW 1.08–1.14, AIIW 0.94–0.96, AIIL 0.86–0.88, AIIIW 1.20–1.25, AIIIL 1.12, AIVW 1.42–1.44, AIVL 1.08–1.16, WL 2.26, MFL 1.08, CI 74–76, SI 47, SW/SL 0.73–0.76, EL/HW 0.41–0.42, EP 1.75, AIIW/AIIL 1.06–1.12, AIIIW/AIIIL 1.08–1.12 (2 measured). Matching the description and general shape of the worker but the mesosoma with a full complement of flight sclerites.

Holotype Specimen Labels

Type Material

Holotype worker, Ghana: Tafo, K2, 12.ii.1974 (C. Campbell) The Natural History Museum

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.