Pheidole janzeni

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Longino, J. T. (2009) Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae).. Zootaxa 2181 : 40 – 41, doi. Versioned wiki page: 2014-07-15, version 57054, https://species-id.net/w/index.php?title=Pheidole_janzeni&oldid=57054 , contributors (alphabetical order): PlaziBot.

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BibTeX:

@article{Longino2009Zootaxa2181,
author = {Longino, J. T.},
journal = {Zootaxa},
title = {Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae).},
year = {2009},
volume = {2181},
issue = {},
pages = {40 -- 41},
doi = {TODO},
url = {http://hol.osu.edu/reference-full.html?id=22820},
note = {Versioned wiki page: 2014-07-15, version 57054, https://species-id.net/w/index.php?title=Pheidole_janzeni&oldid=57054 , contributors (alphabetical order): PlaziBot.}

}

RIS/ Endnote:

TY - JOUR
T1 - Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae).
A1 - Longino, J. T.
Y1 - 2009
JF - Zootaxa
JA -
VL - 2181
IS -
UR - http://dx.doi.org/TODO
SP - 40
EP - 41
PB -
M1 - Versioned wiki page: 2014-07-15, version 57054, https://species-id.net/w/index.php?title=Pheidole_janzeni&oldid=57054 , contributors (alphabetical order): PlaziBot.

M3 - doi:TODO

Wikipedia/ Citizendium:

<ref name="Longino2009Zootaxa2181">{{Citation
| author = Longino, J. T.
| title = Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae).
| journal = Zootaxa
| year = 2009
| volume = 2181
| issue =
| pages = 40 -- 41
| pmid =
| publisher =
| doi = TODO
| url = http://hol.osu.edu/reference-full.html?id=22820
| pmc =
| accessdate = 2024-12-23

}} Versioned wiki page: 2014-07-15, version 57054, https://species-id.net/w/index.php?title=Pheidole_janzeni&oldid=57054 , contributors (alphabetical order): PlaziBot.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Hymenoptera
Familia: Formicidae
Genus: Pheidole

Name

Pheidole janzeni Longino, J. T., 2009Wikispecies linkPensoft Profile

  • Pheidole janzeni Longino, J. T., 2009, Zootaxa 2181: 40-41.

Description

Figure 9

Materials Examined

Holotype major worker. Costa Rica, Guanacaste: Santa Rosa National Park, Sector Murcielago campground, 10.90092°N 85.72943°W, ±100m, 50m, 27 Feb 2008 (J. Longino#6144.04) [INBC, unique specimen identifier CASENT0608973]. Paratypes: major and minor workers. Same data as holotype [BMNH, CAS, EAPZ, ECOSCE, FMNH, INBC, JTLC, LACM, MCZ, MHNG, MIZA, MZSP, UCD, ICN, USNM].

Distribution

Geographic Range Costa Rica, Guatemala, Mexico (Chiapas).

Diagnosis

Diagnosis The morphometric profile of Pheidole janzeniHNS is unique. The extemely small minor workers have the habitus of P. laselvaHNS and P. nigricula, differing from those in the more extensive foveolate sculpture on the katepisternum and propodeum, and the shorter propodeal spines. The major worker differs from those species in the presence of shallow, smooth antennal scrobes surrounded by reticulate rugose sculpture.

Description

Description of minor worker Measurements (paratype): HL 0.43, HW 0.39, HLA 0.11, SL 0.33, EL 0.10, ML 0.48, PSL 0.00, PMG 0.00, SPL 0.02, PTW 0.07, PPW 0.10, CI 91, SI 84, PSLI 0, PMGI 0, SPLI 5, PPI 154. Measurements (n=6): HL 0.40-0.44, HW 0.36-0.40, SL 0.32-0.36, CI 90-91, SI 84-95. Face smooth and shining; margin of vertex flattened with median impression; occipital carina narrow, not visible in full face view; scape with abundant suberect setae about as long as maximum width of scape; promesonotal groove absent; propodeal spines reduced to short obtuse angles; lateral face of pronotum and entire promesonotal dorsum smooth and shining; anepisternum foveolate; katepisternum with medial shiny area surrounded by foveolae; dorsal face of propodeum foveolate, posterior face smooth and shining, lateral face foveolate dorsally, smooth and shining ventrally; mesosomal dorsum with 8-12 medium-length clear (not black) erect setae; dorsal (outer) margin of hind tibia with short decumbent pilosity, no long erect hairs; first gastral tergum smooth and shining; gastral dorsum with moderately abundant, somewhat stiff erect setae; color dark brown to black. Description of major worker Measurements (holotype): HL 0.74, HW 0.62, HLA 0.15, SL 0.32, EL 0.10, ML 0.62, PSL 0.01, PMG 0.00, SPL 0.03, PTW 0.11, PPW 0.18, IHT 0.12, OHT 0.24, CI 83, SI 52, PSLI 1, PMGI 0, SPLI 4, PPI 156, HTI 50. Measurements (n=4): HL 0.73-0.81, HW 0.60-0.66, SL 0.32-0.36, CI 82-83, SI 51-57. Mandibles smooth and shiny with 3-4 coarse, widely-separated longitudinal rugae on outer base, moderately abundant subdecumbent setae on dorsal surface; clypeus smooth and flat with shallow anterior notch; face with well-defined shallow antennal scrobes, medial area somewhat swollen, sloping to relatively depressed vertex lobes, scrobes smooth and shining, most of rest of face with reticulate rugose sculpture, extending to posterior margin of vertex, about 4 stronger longitudinal rugae on frontal space posterior to clypeus; in face view anterolateral margins of head slightly flaring at mandibular condyles; head with abundant short suberect setae projecting from sides of head in face view; scape smooth and shining, terete, with abundant erect setae longer than maximum width of scape; hypostomal margin gently curved; median tooth an inconspicuous short nub; inner hypostomal teeth small but distinct, slightly closer to midline than to outer hypostomal teeth; promesonotal groove absent, dorsal profile of promesonotum evenly arched; propodeal spines present, short; promesonotum smooth and shining with patch of foveolae and rugae on humeral angles; remaining mesosomal sculpture as in minor worker; dorsum of postpetiole smooth and shining; dorsal (outer) margin of hind tibia with short decumbent pilosity, no long erect hairs; pilosity abundant on mesosomal dorsum; first gastral tergite smooth and shining, with abundant erect setae; color dark brown.

Biology and Ecology

Biology Pheidole janzeniHNS occurs in dry forest habitats. In Costa Rica, minor and major workers were collected at baits near a stream edge. Similarly, minor and major workers were collected at baits in dry forest localities in Chiapas, Mexico. Habitats have been open dry areas with frequent disturbance, including a recently slashed and burned field, and an area of heavy livestock use. An isolated minor worker was collected in pine oak forest at 1100m in Guatemala. It is likely that this species is common and widespread in seasonally dry areas of Mesoamerica but has been largely overlooked due to its small size.

Etymology

Etymology This species is named for an important mentor of mine, D. H. Janzen. It may seem odd to name such a diminutive species for a giant in tropical ecology, but (1) it is a distinctive species, unlikely to be synonymized, (2) it is widespread in synanthropic habitats, and thus likely to be frequently encountered for generations to come, and (3) it is found in tropical dry forest habitats, the conservation of which Janzen has championed.

Discussion

Comments The type series of P. mackayiHNS was from a bait and is a mixed series, with the minor workers being this newly described species and not conspecific with the holotype major worker of P. mackayiHNS. The collections from Costa Rica and Mexico are remarkably similar and appear identical in every respect; they show no geographic variation.

Materials Examined

Additional material examined GUATEMALA: Zacapa, 8.5km NE Tuculutan, 15°03'31"N, 89°40'35"W, 1100m (M. Branstetter); MEXICO: Chiapas, Sierra Morena, 16°09'15"N, 93°35'23"W, 1150m (J. Longino); 24km SW Cintalapa, 16°32'N, 93°53'W, 710m (W. MacKay).

Taxon Treatment

  • Longino, J. T.; 2009: Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae)., Zootaxa 2181: 40-41. doi
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No known copyright restrictions apply on this formal expression of scientific knowledge. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for details.