Difference between revisions of "Probolomyrmex guanacastensis"

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*''<span style='color:red;font-weight:bold;'>guanacastensis.</span> Probolomyrmex guanacastensis'' O'Keefe & Agosti, 1998: 191, figs. 1-4 (w.q.) COSTA RICA.
 
*''<span style='color:red;font-weight:bold;'>guanacastensis.</span> Probolomyrmex guanacastensis'' O'Keefe & Agosti, 1998: 191, figs. 1-4 (w.q.) COSTA RICA.
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===Description===
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====Worker====
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HL 0.65, HW 0.39, SL 0.41, TL 0.79, CI 0.60, SI 106, (1 examined).
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Oliveira & Feitosa (2019) - Similar to ergatoid queen, except by the absence of eyes and ocelli.
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====Queen====
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Oliveira & Feitosa (2019) - Ergatoid (from original description): (n=1) HL 0.63; HW 0.41; SL 0.40; WL 0.81; CI 65; SI 63.5.
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Ergatoid description: Head 1.6 times longer than wide. Antennal scapes extends beyond head midlength, distance from scape apex to of head more than two times pedicel length (SI 63.5). Compound eyes and three equally sized ocelli present. Propodeal declivity laterally with narrow carina, dorsolateral teeth present, almost in same plane as dorsal profile of the propodeum in lateral view. Petiole longer than high, without teeth; anterior face of petiolar node long and inclined; posterior face short and concave; postero-ventral lobe short and rounded; subpetiolar process weakly developed. First gastral segment with prora and dorsal protuberance on posterior region of tergite, characterized by gentle elevation of the integument.
  
 
===Type Material===
 
===Type Material===
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===Description===
 
  
 
==References==
 
==References==

Revision as of 16:53, 10 March 2020

Probolomyrmex guanacastensis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Proceratiinae
Tribe: Probolomyrmecini
Genus: Probolomyrmex
Species: P. guanacastensis
Binomial name
Probolomyrmex guanacastensis
O'Keefe & Agosti, 1998

Probolomyrmex guanacastensis casent0104673 profile 1.jpg

Probolomyrmex guanacastensis casent0104673 dorsal 1.jpg

Specimen labels

At a Glance • Ergatoid queen  

 

This species has been collected in sifted debris processed through a modified Berlese-Tulgren funnel from riparian habitat in Costa Rica. This is the only record of an ergatoid queen in this genus. The presence of an ergatoid queen in Probolomyrmex is unexpected, because species with ergatoid queens normally have large colonies (Peeters, 1997). It is noteworthy that the term “ergatoid” was applied here by the authors of the species. It remains to be confirmed if the specimen was in fact a reproductive female.

Identification

Oliveira & Feitosa (2019) - Postero-ventral lobe of petiole short and rounded. Subpetiolar process weakly developed. First gastral segment with prora and a dorsal protuberance on the posterior region of gaster.

Probolomyrmex guanacastensis is similar to Probolomyrmex boliviensis but is smaller and has shorter antennal scapes.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica (type locality).


Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

The ergatoid female has eyes and ocelli, unlike workers (O'Keefe & Agosti 1997). Body sizes are very similar.

Nomenclature

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

  • guanacastensis. Probolomyrmex guanacastensis O'Keefe & Agosti, 1998: 191, figs. 1-4 (w.q.) COSTA RICA.

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

Description

Worker

HL 0.65, HW 0.39, SL 0.41, TL 0.79, CI 0.60, SI 106, (1 examined).

Oliveira & Feitosa (2019) - Similar to ergatoid queen, except by the absence of eyes and ocelli.

Queen

Oliveira & Feitosa (2019) - Ergatoid (from original description): (n=1) HL 0.63; HW 0.41; SL 0.40; WL 0.81; CI 65; SI 63.5.

Ergatoid description: Head 1.6 times longer than wide. Antennal scapes extends beyond head midlength, distance from scape apex to of head more than two times pedicel length (SI 63.5). Compound eyes and three equally sized ocelli present. Propodeal declivity laterally with narrow carina, dorsolateral teeth present, almost in same plane as dorsal profile of the propodeum in lateral view. Petiole longer than high, without teeth; anterior face of petiolar node long and inclined; posterior face short and concave; postero-ventral lobe short and rounded; subpetiolar process weakly developed. First gastral segment with prora and dorsal protuberance on posterior region of tergite, characterized by gentle elevation of the integument.

Type Material

References