Pheidole ajaxigibba, Longino, 2019
publication ID |
https://doi.org/ 10.11646/zootaxa.4599.1.1 |
publication LSID |
lsid:zoobank.org:pub:7CDD24FF-5BA3-4D06-898D-A3E220515D4C |
DOI |
https://doi.org/10.5281/zenodo.5586161 |
persistent identifier |
https://treatment.plazi.org/id/5B56E872-FF94-4A5E-FF32-8D0EFC2EEC4F |
treatment provided by |
Plazi |
scientific name |
Pheidole ajaxigibba |
status |
sp. nov. |
Pheidole ajaxigibba new species
( Plate 51 View PLATE 51 )
Pheidole JTL-223: morphospecies code previously used on AntWeb.
HOLOTYPE: 1 major worker, Costa Rica, Puntarenas: Sirena , Corcovado NP, 8.48067 -83.58885 ± 1 km, 25 m, 29-Jun-2013, rainforest, nest in dead wood (J. Longino, JTL8286.1) [ MUCR, unique specimen identifier CASENT0638172] . PARATYPES: major, minor workers: same data as holotype [ CAS, DZUP, MCZC, USNM] .
Geographic range. Costa Rica.
Diagnosis. Minor: face smooth and shining; head tapered posteriorly to narrow neck and strongly developed occipital carina; promesonotal groove deep and broad; mesonotum strongly protruding in lateral view; pronotum smooth and shining; katepisternum with faint foveolation and strong longitudinal rugulae; propodeal spines long, thin, about as long as posterior face of propodeum; gaster smooth and shining; abundant erect setae on mesosomal and gastral dorsum, tibiae; color yellow orange. Major: inner hypostomal teeth widely spaced, in form of small, inconspicuous denticles; scape base terete; face with foveolation overlain with reticulate rugulae throughout, these becoming more longitudinally oriented posteriorly; propodeal spines about two thirds length of posterior face of propodeum; gastral dorsum sericeous/striolate on anterior two thirds, fading to smooth and shiny posteriorly; face and sides of head covered with dense, decumbent, somewhat silky pubescence; abundant erect setae on mesosomal and gastral dorsum, tibiae.
Measurements, minor worker: HW 0.65, HL 0.89, SL 1.29, EL 0.15, WL 1.22, PSL 0.23, PTW 0.12, PPW 0.20, CI 73, SI 197, PSLI 35, PPI 161 (n=4).
Measurements, major worker: HW 1.38, HL 1.43, SL 1.23, EL 0.21, WL 1.57, PSL 0.24, PTW 0.23, PPW 0.37, CI 96, SI 89, PSLI 18, PPI 161 (n=4).
Biology. This species occurs in lowland rain forest. A nest was collected in dead wood, in a dead horizontal tree trunk about 1 m above the ground. Minor workers have been collected in beating samples from low vegetation and in a Malaise trap.
Comments. This species and P. ajax are similar. Pheidole ajaxigibba differs in the much more produced mesonotum and the bright yellow color. It is allopatric with P. ajax , the two appearing to be complementary forms on the two sides of Costa Rica.
Etymology: Similar to P. ajax but with more pronounced mesonotum.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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