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Species: Myrmelachista lauropacifica   Longino, 2006 

Classification:
Download Data

Taxonomic History (provided by Barry Bolton, 2018)

Myrmelachista lauropacifica Longino, 2006A PDF: 31, figs. 4, 6, 11, 13 (w.q.m.) COSTA RICA. Neotropic. AntCat AntWiki HOL

Distribution:

  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Costa Rica
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Neotropical

Distribution Notes:

Costa Rica. In Costa Rica it occurs in the southern Pacific lowlands.

Biology:

Natural History:

This species occurs in mature wet forest in the southern Pacific lowlands. I have collected it in Corcovado National Park and Carara Biological Reserve. Colonies have been in live stems of Lauraceae, with a biology similar to M. flavocotea. I found nests in O. cf. atirrensis and O. nicaraguensis. In Carara, O. nicaraguensis was common along the Quebrada Bonita. Small plants in the forest understory all contained M. lauropacifica, while larger plants in more insolated areas along the stream edge contained Azteca cf. pittieri and Pseudomyrmex viduus.

References:

Longino, J. T. (2006). A Taxonomic review of the genus Myrmelachista (Hymenoptera: Formicidae) in Costa Rica. Zootaxa 1141:1-54.

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Longino, J. T., 2006, A taxonomic review of the genus Myrmelachista (Hymenoptera: Formicidae) in Costa Rica., Zootaxa 1141, pp. 1-54

Myrmelachista lauropacificaHNS NEW SPECIES

Figures 4, 6, 11, 13

Holotype alate queen: Costa Rica, Prov. Puntarenas, Cedral, Corcovado National Park GoogleMaps, 8°33’N, 83°33’W, 50m GoogleMaps, 15 Jul 1982 (J. Longino) [INBC, specimen code JTLC000006213]. GoogleMaps

Paratypes: workers and queens, from same nest as holotype, specimen codes JTLC000006214 - JTLC000006218, distributed to MCZC, USNM, UCDC, LACM, BMNH. GoogleMaps

Diagnosis

Worker with antenna 9-segmented, maxillary palpus 5-segmented, color yellow. Queen with orange head, eyes relatively large (OI 33-37), HW less than 0.8mm. Obligate inhabitant of understory Lauraceae.

Worker

Same as M. flavocoteaHNS. Measurements: HL 0.468-0.596, HW 0.414-0.537, SL 0.223-0.285, EL 0.098-0.110, CI 87-95 (n=4).

Queen

Antenna 9-segmented; maxillary palpus 5 or 6-segmented; labrum short, bilobed, not covering mouthparts; dorsal surface of mandible with piligerous puncta, interspaces smooth or slightly roughened; face and clypeus smooth and shining; in full face view, with abundant long erect to suberect setae projecting from sides of head, setae on posterior margin shorter; ventral surface of head with abundant short erect setae; scapes with abundant erect to suberect setae, longer setae subequal to width of scape; outer surface of hind tibia with abundant erect to subdecumbent setae, longer setae shorter than width of tibia; color light yellow orange with infuscated bands on gastral terga.

Measurements: HL 0.900-0.966, HW 0.738-0.787, SL 0.363-0.402, EL 0.261-0.276, OW 0.076-0.089, OD 0.133-0.155, CI 77-82, OI 33-37, OcI 8-9 (n=4).

Male

Antenna 10-segmented; maxillary palpus 6-segmented; pygostyles absent; basiparamere lobe short, weakly sclerotized, half the length of paramere or less, in one collection drawn out as thin, sharp point, in another reduced to short triangular tooth; paramere weakly sclerotized, parallel-sided with rounded apex; cuspis absent (at high magnification, barely visible as tiny remnant); digitus evenly curved downward, tapering to rounded point; apodeme of penial valve curving into dorsal margin at obtuse angle.

Etymology

The name refers to its association with plants in the family Lauraceae and its geographic distribution in the Pacific lowlands.

Range

Costa Rica. In Costa Rica it occurs in the southern Pacific lowlands.

Biology

This species occurs in mature wet forest in the southern Pacific lowlands. I have collected it in Corcovado National Park and Carara Biological Reserve. Colonies have been in live stems of Lauraceae, with a biology similar to M. flavocoteaHNS. I found nests in O. cf. atirrensis and O. nicaraguensis. In Carara, O. nicaraguensis was common along the Quebrada Bonita. Small plants in the forest understory all contained M. lauropacificaHNS, while larger plants in more insolated areas along the stream edge contained Azteca cf. pittieriHNS and Pseudomyrmex viduusHNS.

Material Examined

COSTA RICA, Puntarenas: Cedral, Corcovado National Park GoogleMaps, 8°33’N, 83°33’W, 50m GoogleMaps (J. Longino) GoogleMaps; Bijagual, Carara Biol. Reserve GoogleMaps, 9°47’N, 84°36’W, 500m GoogleMaps (J. Longino) GoogleMaps; Carara Biological Reserve, Estacion Quebrada Bonita GoogleMaps, 9°47’N, 84°36’W, 30m GoogleMaps (J. Longino, 2 collections) GoogleMaps.

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in swamp forest, 3 times found in wet forest, 1 times found in tall wet forest, 1 times found in rainforest.

Found most commonly in these microhabitats: 1 times nest in live stems, 3 times Ex live stems Ocotea cf. atirrensis, 1 times in live stems Ocotea nicaraguensis, 1 times Ex live stems laurac. Small plant, not O. nicaraguensis; angular green stems and, 1 times Ex live stems Ocotea nicaraguensis., 1 times ex live branch Ocotea.

Elevations: collected from 30 - 500 meters, 142 meters average

Type specimens: Holotype queen lauropacifica: jtlc000006213; Paratype lauropacifica: jtlc000006214, jtlc000006215, jtlc000006216, jtlc000006217, jtlc000006218



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