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Stenamma siculum
| Stenamma siculum | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Stenammini |
| Genus: | Stenamma |
| Species: | S. siculum |
| Binomial name | |
| Stenamma siculum Rigato, 2011
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Known from the sexual castes collected from malaise traps. Nothing is known about the biology of Stenamma siculum.
Identification
Rigato (2011) - A relatively slender species with moderately elongate scape. The male has fully developed mandibles and reticulate-punctate propodeal dorsum. Both gyne and male bear several standing (subdecumbent to suberect) hairs along the dorsal edge of the scape mixed with the ordinary subdecumbent pubescence.
Initially I was unaware of this new species and thought these specimens could belong either to Stenamma sardoum or to Stenamma msilanum (sensu DuBois, 1998). In fact, they seem to share many features with both, especially relatively elongate appendages and shape of the petiole. The unique striking difference from them is the presence of several raised hairs on the appendages. This feature is shared with very different taxa such as Stenamma petiolatum and Stenamma zanoni. Unfortunately, the worker is still unknown, but I am confident it will exhibit the same distinctive feature.
Keys including this Species
- Key to Stenamma westwoodii species-group males of Western Europe and North African
- Key to Stenamma westwoodii species-group queens of Western Europe and North African
- Key to Stenamma westwoodii species-group workers of Western Europe and North African
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: 37.883375° to 37.883132°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Palaearctic Region: Italy (type locality).
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Countries Occupied
| Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species. |
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Estimated Abundance
| Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species. |
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Biology
Castes
Workers have yet to be collected.
Queen
Images from AntWeb
 
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| Paratype of Stenamma siculum. Queen (alate/dealate). Specimen code casent0905851. Photographer Z. Lieberman, uploaded by California Academy of Sciences. | Owned by MSNG, Genoa, Italy. |
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Male
  
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Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- siculum. Stenamma siculum Rigato, 2011: 12, figs. 5, 41, 47, 48, 54, 58, 63, 68 (q.m.) ITALY (Sicily).
- Type-material: holotype queen, 32 paratype queens, 10 paratype workers.
- Type-locality: holotype Italy: Sicily, Corleone (Palermo), fraz. Ficuzza, 680 m., UTM 33 S 357272 4194090, 9.xii.2003-24.ii.2004, malaise trap (D. Birtele, P. Cerritti & M. Tisato); paratypes: 21 queens, 5 males with same data, 10 queens, 4 males Sicily, Bosco della Ficuzza (Palermo), Toretta Torre, 940 m., UTM 33 S 357671 4194110, malaise trap, 1.ii.2005 (A. Gatto), 1 male with same data as last but Plot Conecofor, SIC 1 (A. Gatto).
- Type-depositories: CNBF (holotype); BMNH, CNBF, MSNG, MSNM (paratypes).
- Status as species: Borowiec, L. 2014: 161; Lebas, et al. 2016: 336.
- Distribution: Italy (Sicily).
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Queen
Holotype: TL 4.8; HL 0.95; HW 0.78; CI 82; SL 0.77; SI 99; PCI 35; AL 1.40; PSI 1.64; ScW 0.67; MnL 1.05; PeL 0.51; PPL 0.30; PeH 0.24; PPH 0.24; PeW 0.20; PPW 0.26; PI1 59; PI2 65; MTL 0.73; TI 94.
TL 4.6–5.1; HL 0.94–1.02; HW 0.77–0.84; CI 82–84; SL 0.77–0.82; SI 97–100; PCI 29–33; AL 1.32–1.50; PSI 1.5–1.8; ScW 0.66–0.74; MnL 0.95–1.11; PeL 0.49–0.54; PPL 0.30–0.34; PeH 0.24–0.27; PPH 0.23–0.26; PeW 0.18–0.21; PPW 0.24–0.28; PI1 59–68; PI2 62–66; MTL 0.72–0.79; TI 90–96 (11 measured).
Mandibles longitudinally rugose with distinct piligerous pits, 8-10 toothed. Anterior clypeal border shallowly concave in the middle. Head distinctly longer than wide, with moderately convex sides, narrower at occipital angles than at mandibular insertion; its surface mostly areolate with longitudinal rugulation prevailing on the front, reticulate-punctate ground sculpture moderately developed. Scape moderately long, usually just reaching the posterior margin of the head when laid back. The latter weakly convex in full face view.
Mesosoma in profile with weakly convex mesoscutum; propodeal dorsum steep. Pronotum mostly transversely irregularly rugose. Mesonotum with an irregular median carina and mostly longitudinally irregularly rugose. Sides of mesosoma irregularly longitudinally rugose, except for the largely smooth anterior mesopleuron. Propodeal dorsum transversely rugose; its declivity faintly transversely rugulose and shining. Propodeal spines strong and sharp. Waist reticulate-punctate with scattered short irregular rugulae; nodes mostly smooth and shining. Petiole in profile with a bluntly triangular node, its sternite distinctly concave at node level and with no anterior subpetiolar process. Postpetiole in profile relatively elongate; its sternite weakly concave and with a slightly protruding anterior process. In dorsal view petiolar peduncle just behind the protruding spiracles about parallel-sided. Gaster almost completely smooth and shining, except at its basalmost portion, which is weakly reticulate-punctate with superimposed diverging short rugulae.
Appressed to subdecumbent pubescence moderately long and occurring above most surfaces, more abundant on head and appendages. Standing, subdecumbent to erect, hairs as usual: abundant on head (especially dorsomedially, laterally and ventrally), dorsum of mesosoma and gaster. Scape dorsally with several standing (subdecumbent to suberect) hairs raised above the level of the pubescence; extensor surface of mid and hind tibiae with few, sparse subdecumbent setae besides the ordinary decumbent pubescence. All of these appendage setae often are not clearly distinguishable from pubescence hairlets, but they are basally straighter and raised above pubescence level.
Colour mostly ferrugineous throughout, with a more testaceous gaster. Wings appearing faintly infuscated.
Male
TL 3.4–4.5; HL 0.65–0.73; HW 0.54–0.62; CI 82–85; SL 0.29–0.36; SI 53–64; AL 1.19–1.43; ScW 0.58–0.71; MnL 0.79–0.97; PeL 0.44–0.50; PPL 0.24–0.27; PeH 0.17–0.22; PPH 0.18–0.21; PeW 0.16–0.19; PPW 0.21–0.26; PI1 54–59; PI2 78–82; MTL 0.82–0.99; TI 151–163 (6 measured).
Mandibles fully developed, superficially rugulose and shining, 6- to 7-toothed. Head in full face view with moderately convex sides; mostly finely reticulate-punctate, with superimposed, chiefly longitudinal, rugulae. Pronotum mostly superficially reticulate-punctate with scattered rugulae. Mesoscutum mostly smooth and shining, especially anteriorly between the wellmarked notauli; the remaining portions irregularly reticulate-rugose. Scutellum strongly sculptured, reticulate-punctate with irregular rugosity. Propodeal dorsum with a similar, but more superficial sculpturation. Mesosoma in profile with prevailingly smooth mesopleuron and rugose propodeum. The propodeal dorsum distinctly longer than the declivity, which is finely transversely rugulose and shining. Waist chiefly reticulate-punctate, longitudinally rugulose, with smooth nodes.
Pilosity mostly as in gyne.
Colour mostly piceous, with brown appendages and paler mandibles, tarsi and apical half of the funiculi. Wings as in gyne.
Type Material
Holotype (gyne): ITALY, SICILY, Corleone (Palermo), fraz. Ficuzza, 680 m, UTM 33 S 357272 4194090, 9.xii.2003-24.II.2004, malaise trap (D. Birtele, P. Cerretti,M. Tisato). (Centro Nazionale per lo Studio e la Conservazione della Biodiversità Forestale)
Paratypes. 21 gynes and 5 males with the same data as the holotype. 10 gynes and 4 males: ITALY, SICILY, Bosco della Ficuzza (Palermo), Torretta Torre, 940 m, UTM 33 S 357671 4194110, malaise trap I-II.2005, (A. Gatto). 1 male: ITALY, SICILY, Bosco della Ficuzza (Palermo), Torretta Torre, 940 m, Plot Conecofor SIC 1, UTM 33 S 357671 4194110, malaise trap ix.2005 (A. Gatto). (The Natural History Museum, CNBF, Museo Civico di Storia Naturale, Genoa, Museo Civico di Storia Naturale, Milano)
References
- Rigato, F. 2011. Contributions to the taxonomy of West European and North African Stenamma of the westwoodii species-group. (Hymenoptera Formicidae). Memorie della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano. 37:1-56.
- Borowiec, L. 2014. Catalogue of ants of Europe, the Mediterranean Basin and adjacent regions (Hymenoptera: Formicidae). Genus (Wroclaw) 25(1-2): 1-340.
References based on Global Ant Biodiversity Informatics
- Borowiec L. 2014. Catalogue of ants of Europe, the Mediterranean Basin and adjacent regions (Hymenoptera: Formicidae). Genus (Wroclaw) 25(1-2): 1-340.
- Rigato F. 2011. Contributions to the taxonomy of West European and North African Stenamma of the westwoodii species-group. (Hymenoptera Formicidae). Memorie della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 37: 1-56.