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Lachnomyrmex regularis
| Lachnomyrmex regularis | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Lachnomyrmex |
| Species: | L. regularis |
| Binomial name | |
| Lachnomyrmex regularis Feitosa & Brandão, 2008
| |
The only collection of L. regularis was made in northern Costa Rica, at 700m elevation. There is no information on the biology of this species.
Identification
Feitosa and Brandão (2008) - Body densely covered by fine and continuous rugae; eyes well developed, with about 10 facets at maximum diameter; dorsum of postpetiole entirely smooth and shining, bearing around four long hairs; gaster distinctly darker than body and with the first tergite completely devoid of long flexuous hairs.
The sculpturation pattern and the presence of a subpostpetiolar projection are similar to Lachnomyrmex haskinsi. However, L. regularis is easily distinguishable by its larger body size, rugae on head dorsum distinctly denser, eyes more developed, postpetiole dorsum entirely smooth, and body color variably brown contrasting with darker gaster.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: 11.067° to 10.99261°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Neotropical Region: Costa Rica (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
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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.
- regularis. Lachnomyrmex regularis Feitosa & Brandão, 2008: 38, figs. 15, 19 (w.) COSTA RICA.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Holotype worker HL 0.84; HW 0.79; ML 0.29; SL 0.55; EL 0.20; WL 0.98; PSL 0.30; PL 0.39; PPL 0.20; GL 1.02; TL 3.73; CI 93; SI 70; OI 26. workers (n=7). HL 0.82–0.90; HW 0.76–0.83; ML 0.25–0.31; SL 0.53–0.58; EL 0.19– 0.22; WL 0.98–1.09; PSL 0.27–0.31; PL 0.38–0.47; PPL 0.17–0.24; GL 0.96–1.10; TL 3.57–4.11; CI 91–93; SI 69–71; OI 25–28.
Color light reddish-brown to dark brown, contrasting with blackish gaster; appendages slightly lighter than body. Head and mesosoma densely covered by continuous, fine rugae, transverse on anterior portion of pronotum, grading to longitudinal on rest of promesonotum, mesopleura, and propodeum; rugae on cephalic dorsum subparallel and exceptionally dense, leaving no spaces among them; mandibles with short longitudinal striae restricted to basal portion; petiole and postpetiole only feebly rugose on lateral faces. Abundant pilosity on head and dorsum of promesonotum; dorsum of petiolar node and postpetiole with about six and four long hairs, respectively; first tergite of gaster entirely devoid of long flexuous hairs.
Head noticeable longer than broad, with vertexal margin weakly convex; frontal lobes somewhat angulate laterally; eyes relatively large, with around 10 facets at greatest diameter. Promesonotum considerably convex in profile, well above propodeum level; metanotal groove relatively narrow and markedly impressed; propodeal spines straight and relatively long; teeth of propodeal lobes widen basally, with about one-third of propodeal spines length. Petiolar node strongly elevated and subtriangular in lateral view; dorsum of postpetiole with a raised prominence medially and a well developed anteroventral projection directed anteriorly.
Type Material
Holotype worker. COSTA RICA: Guanacaste: Estr. Pitilla, 9km S Sta. Cecília, 11º04'N 85º24'O, 6– 19.viii.1993, P. Ríos col., no. INBIOCRI001613693 [INBC]. Paratypes. same data as holotype; no. INBIOCRI001613661 (1 worker) [BMNH]; same data, nos. INBIOCRI001613662/INBIOCRI001613666/INBIOCRI001613673/INBIOCRI001613676 (4 workers) [INBC]; same data, nos. INBIOCRI001613677/INBIOCRI001613681 (2 workers) [MZSP].
Etymology
This species is named after its regular pattern of body sculpturation in comparison with other Lachnomyrmex species. From Latin, regularis: regular.
References
- Feitosa, R.M. & Brandão, C.R.F. 2008. A taxonomic revision of the Neotropical myrmicine ant genus Lachnomyrmex Wheeler (Hymenoptera: Formicidae). Zootaxa 1890, 1-49.
References based on Global Ant Biodiversity Informatics
- INBio Collection (via Gbif)