Procryptocerus paleatus

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Procryptocerus paleatus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Procryptocerus
Species: P. paleatus
Binomial name
Procryptocerus paleatus
Emery, 1896

Procryptocerus paleatus casent0904898 p 1 high.jpg

Procryptocerus paleatus casent0904898 d 1 high.jpg

Specimen Labels

Procryptocerus paleatus is restricted to primary rainforest, where workers have been collected on low vegetation and in treefalls. At Corcovado National Park, workers were very rarely encountered on low vegetation, yet occurred in nearly every treefall or canopy sample. Procryptocerus paleatus is common in canopy fogging samples from La Selva Biological Station. (Longino and Snelling 2002)

Identification

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica (type locality), Ecuador, Honduras, Mexico, Panama.


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • paleatus. Procryptocerus paleatus Emery, 1896g: 97 (w.) COSTA RICA. Longino & Snelling, 2002: 23 (q.). See also: Kempf, 1951: 53.

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

Description

Worker

Longino and Snelling (2002) - (n = 1, Costa Rica): HW 1.537, HL 1.455, SL 0.800, EL 0.332, MeL 1.716, MeW 1.119, PrW 0.741, PrL 0.483, PrS 0.218, PrT 0.702, MTL 1.034, PtL 0.492, PtW 0.436, PpW 0.593, PtH 0.422, AL 1.746, AW 1.419, ASW 0.031.

Differing from Procryptocerus impressus in the following respects: clypeus somewhat differentiated from face, upper margin slightly impressed, interantennal region slightly protruding, forming a stronger bend than in P. impressus; mesonotal teeth small, squared-off posteriorly, well before propodeal suture; propodeal suture shallow, mesonotum and dorsal face of propodeum in same plane; on some workers, dorsal striae do not attain anterior pronotal border, being replaced by coarse piligerous foveae; posterior face of forefemur longitudinally rugose throughout; setae similar to P. impressus in form and distribution, but less dense, particularly on first gastral tergite; setae on disc of first gastral tergite sparse, widely spaced, not overlapping. Differing from Procryptocerus subpilosus in the relatively shorter petiole and from Procryptocerus tortuguero in the absence of erect setae on the frons. Also, unlike both P. subpilosus and P. tortuguero, the striae on the first gastral tergite extend to the posterior margin.

Queen

Longino and Snelling (2002) - (n = 1, Costa Rica, barcode INBIOCRI001282946): HW 1.400, HL 1.342, SL 0.767, EL 0.396, MeL 1.782, MeW 1.102, MTL 0.989, MFL 0.993, MFW 0.351, PtL 0.513, PtW 0.412, PpW 0.562, PtH 0.419, AL 1.628, AW 1.376, ASW 0.030.

Similar to worker in most respects; face uniformly, sparsely foveate, foveae larger than on P. impressus, interspaces subequal to fovea diameter, interspaces subopaque, with microareolate sculpture (interspaces somewhat shinier on P. impressus); interspersed rugae very weak to absent (in contrast to the workers, which have a mixture of foveae and abundant shallow rugae); pronotum foveate laterally, each fovea with stiff, flattened seta; fovea density lower on medial pronotum, but foveae still large (in contrast to impressus, which has medial foveae absent or reduced to small puncta); mesoscutum, axillae, and scutellum with a mixture of elongate foveae and longitudinal striae; relatively sparse setae on mesoscutum, axillae, and scutellum; dorsal face of propodeum longitudinally striate.

The above description is based on five queens from Costa Rica. One queen from Los Tuxtlas, Mexico, differs in being much more worker-like. The face sculpture is like the worker (with a greater abundance of rugae and a reduced development of discrete foveae), and the pronotum is uniformly closely foveate, with no decrease in fovea density medially.

Type Material

Longino and Snelling (2002) - Holotype worker: Costa Rica, Atirro, near Jimenez Museo Civico di Storia Naturale, Genoa (examined).

Determination Clarifications

One Mexican worker (Veracruz Prov., S. Lucrecia, April 1923 [W. M. Mann], USNM), which Kempf (1951) identified as P. paleatus, is Procryptocerus scabriusculus.

References