Dorymyrmex tuberosus

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Dorymyrmex tuberosus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dolichoderinae
Genus: Dorymyrmex
Species: D. tuberosus
Binomial name
Dorymyrmex tuberosus
Cuezzo & Guerrero, 2011

Dorymyrmex tuberosus worker holotype d.jpg

Dorymyrmex tuberosus worker holotype p.jpg

Known only from museum collections. Specimens of Santander were collected in the campus of the Industrial University of Santander and those deposited in LACM have a label saying: “ex-Manihot,” probably referred to be collected in a cultivate place. According to this data, D. tuberosus prefers, as several species of Dorymyrmex, disturbed habitats. (Cuezzo and Guerrero 2011)

Identification

Cuezzo and Guerrero (2011) - Worker Dark brown; whitish pubescence in all tagma; scape long; posterior margin of head concave in the middle; mesonotal profile interrupted by a short but distinct tubercle, besides a thin tubercle directed dorsally between dorsal and declivitous faces of propodeum.

Two well-developed tubercles on the mesosoma, along with whitish pubescence, and general dark color can be useful to differentiate D. tuberosus from the other species of Dorymyrmex found in Colombia. This species could be confused with Dorymyrmex brunneus by color but differs by the following characters: shape of the head, slightly wider after compound eyes and always with an emargination in the middle of posterior margin. Pro-mesosomal profile always at level or higher than the apex of propodeal cone. In contrary to D. brunneus, D. tuberosus has well-developed tubercles on the mesonotum.

Keys including this Species

Distribution

Known only from the Colombian type localities: Bolivar, San Juan Nepomuceno and Santander, Bucaramanga.

Distribution based on Regional Taxon Lists

Neotropical Region: Colombia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Known only from the worker caste.

Nomenclature

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

  • tuberosus. Dorymyrmex tuberosus Cuezzo & Guerrero, 2011: 21, figs. 11a-c, 14 (w) COLOMBIA.

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

Description

Worker

Holotype (paratype): HL: 0.88 (0.93); HW: 0.80 (0.88); EL: 0.24 (0.25); EW: 0.20 (0.23); SL: 1.04 (0.98); COD: 0.18 (0.2); WL: 1.18 (1.20); CI: 90 (95); SI: 105 (106); REL: 27 (28); OI: 83 (90); TLI: 134 (131).

Concolorous, dark brown with the lateral corners of the clypeus reddish brown. Whitish and dense pubescence covering the all body. Head: longer than wide. Compound eye placed in the middle of the lateral part of cephalic capsule, not surpassing the lateral margins. Psammophore with short hairs disposed in a triangle; the hairs on the top line are close to the foramen magnum and not reach the oral cavity. Scape long, surpassing the posterior margin of head. Mandibles strongly striate, with five teeth and at least two denticles along the masticatory margin and numerous denticles along the basal margin. Posterior margin of head with a feeble medial emargination. Mesosoma: in profile with two tubercles, one in the posterior end of the mesonotum and one between the dorsal and the declivitous faces of the propodeum. Metasoma: petiolar scale directed dorsally, thin apically.

Type Material

Holotype. 1w, Santander: Bucaramanga, UIS, 906 m., 7°21′0.12″N 73°20′1.22″W / 7.3500333°N 73.3336722°W / 7.3500333; -73.3336722 COLOMBIA, Jun 2003, N. Ruiz and F. Fernandez coll., (Insect Collection, Instituto de Ciencias Naturales). Paratypes: 7w, Bolivar, San Juan Nepomuceno, 24.Oct.1990 F. Bekker leg. Ex Manihot esculenta, COLOMBIA: 2w, (National Museum of Natural History); same data and loc. than holotype, 4w, (ICN), 1w (California Academy of Sciences).

Etymology

The name tuberosus refers to the presence of two tubercles on the dorsal face of both mesonotum and propodeum.

References