Crematogaster rochai

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Longino, J. T. (2003) The Crematogaster (Hymenoptera, Formicidae, Myrmicinae) of Costa Rica.. Zootaxa 151 : 102 – 103, doi. Versioned wiki page: 2014-07-08, version 54401, https://species-id.net/w/index.php?title=Crematogaster_rochai&oldid=54401 , contributors (alphabetical order): PlaziBot.

Citation formats to copy and paste

BibTeX:

@article{Longino2003Zootaxa151,
author = {Longino, J. T.},
journal = {Zootaxa},
title = {The Crematogaster (Hymenoptera, Formicidae, Myrmicinae) of Costa Rica.},
year = {2003},
volume = {151},
issue = {},
pages = {102 -- 103},
doi = {TODO},
url = {http://antbase.org/ants/publications/20256/20256.pdf},
note = {Versioned wiki page: 2014-07-08, version 54401, https://species-id.net/w/index.php?title=Crematogaster_rochai&oldid=54401 , contributors (alphabetical order): PlaziBot.}

}

RIS/ Endnote:

TY - JOUR
T1 - The Crematogaster (Hymenoptera, Formicidae, Myrmicinae) of Costa Rica.
A1 - Longino, J. T.
Y1 - 2003
JF - Zootaxa
JA -
VL - 151
IS -
UR - http://dx.doi.org/TODO
SP - 102
EP - 103
PB -
M1 - Versioned wiki page: 2014-07-08, version 54401, https://species-id.net/w/index.php?title=Crematogaster_rochai&oldid=54401 , contributors (alphabetical order): PlaziBot.

M3 - doi:TODO

Wikipedia/ Citizendium:

<ref name="Longino2003Zootaxa151">{{Citation
| author = Longino, J. T.
| title = The Crematogaster (Hymenoptera, Formicidae, Myrmicinae) of Costa Rica.
| journal = Zootaxa
| year = 2003
| volume = 151
| issue =
| pages = 102 -- 103
| pmid =
| publisher =
| doi = TODO
| url = http://antbase.org/ants/publications/20256/20256.pdf
| pmc =
| accessdate = 2025-04-03

}} Versioned wiki page: 2014-07-08, version 54401, https://species-id.net/w/index.php?title=Crematogaster_rochai&oldid=54401 , contributors (alphabetical order): PlaziBot.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Hymenoptera
Familia: Formicidae
Genus: Crematogaster

Name

Crematogaster rochai Longino, J. T., 2003Wikispecies linkPensoft Profile

  • Crematogaster rochai Longino, J. T., 2003, Zootaxa 151: 102-103.

Materials Examined

Brazil Diaz da Rocha

Distribution

Range Widespread in Neotropics from southern Mexico to Argentina.

Description

Description of worker (Costa Rica) Differing from crinosaHNS and torosaHNS by the following combination of characters: dorsal and posterior face of propodeum in nearly the same plane, such that the propodeal suture appears very shallow with no posterior wall, the propodeum forming a single declivity from the propodeal suture to the petiolar insertion (very large workers have a short dorsal face that drops to propodeal suture); promesonotum strongly arched, not flattened; anteroventral petiolar tooth long, sharply acute, triangular to spine-like; fourth abdominal tergite completely lacking erect setae. Measurements HL 0.851, 0.519, 1.139; HW 0.915, 0.535, 1.238; HC 0.905, 0.509, 1.207; SL 0.559, 0.375, 0.681; EL 0.198, 0.114, 0.257; A11L 0.247; A11W 0.123; A10L 0.110; A10W 0.104; A09L 0.062; A09W 0.078; A08L 0.045; A08W 0.060; WL 0.913, 0.500, 1.259; SPL 0.098, 0.069, 0.158; PTH 0.200, 0.121, 0.265; PTL 0.271, 0.158, 0.407; PTW 0.279, 0.166, 0.343; PPL 0.232, 0.128, 0.286; PPW 0.262, 0.167, 0.352; CI 108, 103, 109; OI 23, 22, 23; SI 66, 72, 60; PTHI 74, 77, 65; PTWI 103, 105, 84; PPI 113, 130, 123; SPI 11, 14, 13; ACI 0.57. Queen (Costa Rica) A normal queen (dorsal face of propodeum drops steeply from postscutellum and much of propodeum appears ventral to scutellum and postscutellum, Fig. 1) with general shape, sculpture, and pilosity characters of the worker; size characters as in Figures 4 and 5.

Biology and Ecology

Biology Crematogaster rochaiHNS has a biology very similar to crinosaHNS and torosaHNS. It occurs primarily in open, seasonally dry areas, highly disturbed areas, pasture edges, and beach margins. It occasionally occurs in mangroves, although crinosaHNS is the more common mangrove inhabitant. I have never collected it in rainforest areas. Nests are large, polydomous, and distributed in a wide variety of plant cavities. Dead branches and knots in living trees are most often used. In Guanacaste Province in Costa Rica colonies may occupy ant acacias and may invade acacias occupied by PseudomyrmexHNS. I have seen workers distributed in small chambers scattered in the corky bark of Tabebuia trees (Bignoniaceae) and Erythrina trees (Fabaceae). Workers often construct small carton baffles to restrict nest entrances and small carton pavilions that shelter Homoptera on surrounding vegetation. Foraging is primarily diurnal. Workers are generalized scavengers and they frequently visit extrafloral nectaries. Often columns of workers move between nests. I often find cockroach egg cases scattered in the nest chambers of C. rochaiHNS, at a much higher density than in the environment generally. The nature of the relationship between cockroaches and the crinosaHNS group would be worth investigation.

Discussion

Comments This is a member of the crinosaHNS complex and may not always be distinguishable from crinosaHNS and torosaHNS. See under crinosaHNS for further discussion. In Costa Rica rochaiHNS always has the fourth abdominal tergite completely devoid of erect setae, and the anteroventral petiolar process is long and sharp. Costa Rican material also lacks a differentiated dorsal face of the propodeum, but material from central and southern South America develops a stronger propodeal suture, thus approaching the condition in other crinosaHNS group material. Also, southern material often has one to five erect setae on the anterolateral portions of the fourth abdominal tergite.

Taxon Treatment

  • Longino, J. T.; 2003: The Crematogaster (Hymenoptera, Formicidae, Myrmicinae) of Costa Rica., Zootaxa 151: 102-103. doi
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