Centromyrmex gigas Forel, 1911

Centromyrmex gigas Forel, 1911 View in CoL

Materials

Type status: Other material. Occurrence: catalogNumber: LEUA- 00000061955 ; recordedBy: Brahyam Quimbaya; individualCount: 1; sex: female; occurrenceID: BE32A364-4DC5-566E-9014-024D0601658C; Taxon: scientificName: Centromyrmex gigas ; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hymenoptera ; family: Formicidae ; genus: Centromyrmex ; specificEpithet: gigas ; scientificNameAuthorship: Forel, 1911; Location: continent: South America; country: Colombia; countryCode: CO; stateProvince: Caquetá; county: Florencia; locality: Vda. Av. Caraño, Fca. La Esperanza ; verbatimElevation: 604 m; locationRemarks: From 10 cm to 20 cm deep in the ground; verbatimCoordinates: 01°43'45.2"N 75°38'57.2"W; verbatimCoordinateSystem: WGS 84; Event: samplingProtocol: Monolite / TSBF; eventDate: 2023-03-22; Record Level: language: es; collectionID: RNC: 270; institutionCode: Universidad de la Amazonia (UDLA); basisOfRecord: PreservedSpecimen GoogleMaps

Type status: Other material. Occurrence: catalogNumber: LEUA- 00000061956 ; recordedBy: Brahyam Quimbaya; individualCount: 1; sex: female; occurrenceID: A7562812-544D-55F5-883E-46ED36B479B2; Taxon: scientificName: Centromyrmex gigas ; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hymenoptera ; family: Formicidae ; genus: Centromyrmex ; specificEpithet: gigas ; scientificNameAuthorship: Forel, 1911; Location: continent: South America; country: Colombia; countryCode: CO; stateProvince: Caquetá; county: Florencia; locality: Vda. Av. Caraño, Fca. La Esperanza ; verbatimElevation: 604 m; locationRemarks: From 10 cm to 20 cm deep in the ground; verbatimCoordinates: 01°43'45.2"N 75°38'57.2"W; verbatimCoordinateSystem: WGS 84; Event: samplingProtocol: Monolite / TSBF; eventDate: 2023-03-22; Record Level: language: es; collectionID: RNC: 270; institutionCode: Universidad de la Amazonia (UDLA); basisOfRecord: PreservedSpecimen GoogleMaps

Type status: Other material. Occurrence: catalogNumber: LEUA- 00000061957 ; recordedBy: Brahyam Quimbaya; individualCount: 1; sex: female; occurrenceID: 602014AE-F9A7-58B6-A9AE-660AC2DC431E; Taxon: scientificName: Centromyrmex gigas ; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hymenoptera ; family: Formicidae ; genus: Centromyrmex ; specificEpithet: gigas ; scientificNameAuthorship: Forel, 1911; Location: continent: South America; country: Colombia; countryCode: CO; stateProvince: Caquetá; county: Florencia; locality: Vda. Av. Caraño, Fca. La Esperanza ; verbatimElevation: 604 m; locationRemarks: From 10 cm to 20 cm deep in the ground; verbatimCoordinates: 01°43'45.2"N 75°38'57.2"W; verbatimCoordinateSystem: WGS 84; Event: samplingProtocol: Monolite / TSBF; eventDate: 2023-03-22; Record Level: language: es; collectionID: RNC: 270; institutionCode: Universidad de la Amazonia (UDLA); basisOfRecord: PreservedSpecimen GoogleMaps

Diagnosis

This species is recognised by being one of the largest of the genus with clypeus without a disc mound; basal third of mandible serrated, masticatory margin of mandible forming an obtuse angle with its basal margin; petiole distinctly longer than wide, anterior face perpendicular to dorsal face of petiolar node, which is an elongate and straight petiole with a prominent subpetiolar process apically rounded to subtruncate (Fig. 17 View Figure 17 ) ( Forel 1911, Franco and Feitosa 2018).

Distribution

This is the first record of C. gigas in Colombia. It has been previously reported from Brazil ( De Oliveira et al. 2009) and French Guiana ( Franco and Feitosa 2018). This record represents one of the northernmost occurrences of this species ( Souza et al. 2012, Pereira Souza et al. 2015).

Biology

All specimens were collected at a depth of 10 to 20 cm in cloud forest, in the Andean-Amazonian transition zone of Caquetá.

Notes

The collected C. gigas specimens varied in pilosity concerning the type specimen (CASENT 0907212). Some specimens were with dispersed pilosity, but no dense areas on the head and dorsum of the mesosoma, smooth and shiny scapes with erect pilosity restricted to the apex.