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Species: Pheidole exigua   Mayr, 1884 

Classification:
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See Also:

Pheidole exigua tuberculata

Taxonomic History (provided by Barry Bolton, 2014)

Pheidole exigua Mayr, 1884: 36 (s.) FRENCH GUIANA. Neotropic. AntCat AntWiki

Taxonomic history

Wheeler, 1908a: 135 (w.q.).
Subspecies of Pheidole flavens: Emery, 1894d PDF: 156.
Revived status as species: Wilson, 2003A: 416.

Taxonomic Treatment (provided by Plazi)

Radoszkowsky, O., 1884:
Miles: Long. 2,2 -3,3mm. Nitidus, rufo - testaceus capite thoraceque ferrugineo - rufis, abdomine dimidio postico fusco; copiose abstante pilosus tibiis pilis brevioribus, oblique abstan-tibus; mandibulae laeves punctis dispersis, ad basin extus stiio-latae, margine masticatorio acuta, antice plus minusve distincte bidentato; clypeus deplanatus, laevis, lateraliter rugulis 1 - 2, in medio cum aut absque carina longitudinali; caput supra a margine antico usque ad capitis angulos posticos for-titer striatum, postice laeve; sulcus frontalis nullus, sulcus ver-ticis longitudinalis distinctus; pronotum rugis transversis inter-stitiis sublaevibus, lateraliter subtuberculatum; mesonotum breve, reticulato-punctatum absque sulco transverso; metanotum parte basali transverse rugulosa et transverse concava, postice spinulis duabus minutis erectis et subparallelis; petioli nodus posticus transverse ovatus, supra sublaevis;- abdomen laeve.
A speciebus americanis corpore minuta, colore, capite fere usque ad angulos posticos fortiter striata, sulco frontali haud impresso atque sculptura thoracis et abdomine laevi distinguendus.

Wilson, E. O.:
Pheidole exigua Mayr 1884: 36. Pheidole flavens subsp. exigua Emery 1894d: 156.
Etymology L exigua , small, trifling.
Diagnosis A member of the " flavens complex" within the larger flavens group, which includes asperithorax , breviscapa , exigua , flavens , orbica , and sculptior , and possibly just an extreme variant of flavens . P. exigua is distinguished as follows.
Major: in side and dorsal-oblique views promesonotal profde strongly convex as well as high relative to the metanotum and propodeum, and dropping to the metanotum through a long, almost vertical face; shallow antennal scrobes present, their surfaces smooth and shiny, their anterior third also covered by longitudinal carinulae; intercarinular spaces of head sparsely foveolate to feebly shiny; occiput smooth and shiny; pronotal dorsum mostly covered by transverse carinulae, its surface sparsely foveolate and feebly shiny; posterior half of dorsal head profile flat.
Minor: carinulae confined to head anterior the eyes; almost all of head, mesosoma, and sides of waist foveolate and opaque. Measurements (mm) Lectotype major: HW 0.80, HL 0.84, SL 0.44, EL 0.08, PW 0.36. Paralectotype minor: HW 0.40, HL 0.46, SL 0.38, EL 0.06, PW 0.24.
Color Major: body except gaster medium reddish yellow; gaster medium plain yellow, except for rear half of first tergite, which is light brown.
Minor: body and mandibles brownish yellow; other appendages medium plain yellow.
Range I have seen material from Costa Rica, Cuba, Puerto Rico, Trinidad, Guyana, French Guiana, and Las Gamas, Santa Cruz, Bolivia, while Kempf (1972b) records it in addition from Para and Pernambuco in Brazil.
biology At La Sagasse Bay on Grenada, West Indies, Stefan Cover and I found several colonies of exigua in small pieces of rotten wood on the floor of dry semi-deciduous forest. A colony of the closely similar P. flavens was in a rotten stump on the grounds of an ecotourism resort several hundred meters away.
Figure Upper: lectotype, major. Lower: paralectotype, minor. FRENCH GUIANA: Cayenne (collected by "M. Jelski," no first name given). Scale bars = 1 mm.

Specimen Habitat Summary

Found most commonly in these habitats: 2 times found in wet cloud forest, 2 times found in wet trop. forest, 2 times found in forest, 2 times found in beach, 1 times found in cacao plantation, 1 times found in waterfront, 1 times found in ball field

Collected most commonly using these methods or in the following microhabitats: 5 times Winkler

Elevations: collected from 20 - 728 meters, 512 meters average

Type specimens: Lectotype Pheidole exigua: casent0601288; Paralectotype Pheidole exigua: casent0601289

(-1 examples)



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