Acropyga donisthorpei

AntWiki - Where Ant Biologists Share Their Knowledge
Jump to: navigation, search
Acropyga donisthorpei
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Plagiolepidini
Genus: Acropyga
Species: A. donisthorpei
Binomial name
Acropyga donisthorpei
Weber, 1944

Acropyga donisthorpei casent0249916 p 1 high.jpg

Acropyga donisthorpei casent0249916 d 1 high.jpg

Specimen Labels

Synonyms
Evolutionary Relationships
Acropyga



Acropyga ayanganna




Acropyga donisthorpei



Acropyga panamensis







Acropyga guianensis



Acropyga stenotes






Acropyga fuhrmanni



Acropyga smithii





Acropyga romeo




Acropyga hirsutula




Acropyga dubitata




Acropyga decedens, Acropyga goeldii



Acropyga epedana












Acropyga arnoldi



Acropyga silvestrii






Acropyga kinomurai



Acropyga lauta





Acropyga sauteri




Acropyga acutiventris




Acropyga myops




Acropyga butteli




Acropyga ambigua



Acropyga pallida










Based on Blaimer et al., 2016. Note only selected Acropyga species are included, and undescribed species are excluded.

LaPolla (2004) - Weber (1944) reported this species from rainforests, nesting in the leaf litter and rotten wood. It has been reported with one mealybug species belonging to the genus Neochavesia.

Identification

LaPolla (2004) - Worker: 11 segmented antennae; dorsal surface of mandible with many erect hairs; inner mandibular margin roughly parallel to clypeal margin; mandible with 5 teeth, the 3rd tooth (from apical) being much smaller than others. Queen: as in worker with modifications expected for caste. Male: 12 segmented antennae; mandible similar to worker, but with only 3 teeth; digiti plate-like, pointing ventrally. Compare with Acropyga decedens.

Workers of this species can be separated from Acropyga decedens by the rounded posterolateral corners giving the head an overall oval appearance in full frontal view. The dorsal surface of the mandible is also distinctly hairy. The inner mandibular margin and anterior clypeal margin form roughly right angles to each other, a characteristic observed only in one other New World species, Acropyga tricuspis, which is easy to diagnose because of its enlarged, square basal tooth.

A. donisthorpei is a close relative of A. tricuspis, sharing with it in males a downward bend in the dorsal margin of the penis valves, similarly shaped parameres, and in workers the oval shaped heads and similar mandibular structures.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Bolivia, Ecuador, Guyana (type locality), Peru.

LaPolla (2004): This species has a wide range, stretching north from Bolivia northwest to Peru then east to Guyana, probably occupying much of tropical South America.

Distribution based on AntMaps

AntMapLegend.png

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.

  • donisthorpei. Acropyga (Rhizomyrma) donisthorpei Weber, 1944: 118, figs. 9, 20, 21 (w.) GUYANA. LaPolla, 2004a: (q.). Senior synonym of oko, paludis: LaPolla, 2004a: 58.
  • oko. Acropyga (Rhizomyrma) oko Weber, 1944: 119, fig. 16 (w.) GUYANA. Junior synonym of donisthorpei: LaPolla, 2004a: 58.
  • paludis. Acropyga (Rhizomyrma) paludis Weber, 1944: 121, fig. 15 (w.m.) GUYANA. Junior synonym of donisthorpei: LaPolla, 2004a: 58.

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

Description

Worker

LaPolla (2004) - (n=6): TL: 1.86-2.23; HW: 0.479-0.537; HL: 0.553-0.602; SL: 0.381-0.43; ML: 0.525-0.602; GL: 0.715-1.08; CI: 86.62-89.2; SI: 73.7-80.72.

Head: brownish-yellow; head longer than broad, covered in layer of appressed hairs, with a few erect hairs along posterior margin; posterior margin entire to slightly concave medially; 11 segmented, incrassate antennae; scape fails to reach posterior margin by about half the length of the pedicel; scape covered in short, suberect to erect hairs; clypeus convex with erect hairs; mandible with 5 teeth; the 3rd tooth is typically much smaller than others; a short diastema exists between 4th and basal tooth; dorsal surface of mandible with many short (approximately 20 hairs) erect hairs, giving it a hairy appearance in full frontal view; inner mandibular margin parallel to clypeal margin. Mesosoma: brownish-yellow; pronotum in lateral view with a distinct shelf-like extension before rising steeply toward mesonotum; posterior portion of pronotum with erect hairs of varying lengths; mesonotum with many erect hairs; metanotal area distinct; propodeum rounded, with many erect hairs; declivity steep. Gaster: petiole erect, slightly concave at apex; gaster brownish-yellow; covered in appressed hairs, with scattered erect hairs throughout, especially along posterior segmental margins.

Queen

LaPolla (2004) - (n=1): TL: 3.89; HW: 0.612; HL: 0.641; SL: 0.531; ML: 1.02; GL: 2.23; CI: 95.48; SI: 86.76. As in worker with modifications expected for caste.

Male

LaPolla (2004) - (n=1): TL: 2.55; HW: 0.475; HL: 0.454; SL: 0.427; ML: 0.825; GL: 1.27; CI: 104.63; SI: 89.89.

Head: brownish-yellow, brown toward apex around 3 prominent ocelli; head broader than long, covered in layer of appressed hairs; posterior margin rounded toward apex, giving head a slight triangular appearance in full frontal view; 12 segmented antennae; scape surpasses posterior margin by about half the length of pedicel; clypeus slightly convex, with erect hairs; mandible with 3 distinct teeth; diastema present between apical and 2nd tooth; inner mandibular margin, as in worker, roughly parallel to the clypeal margin. Mesosoma: pronotum collar-like, overarched by mesonotum; mesonotum flat, covered in appressed hairs; scutellum with scattered erect hairs; propodeum nearly flat with indistinct declivity. Gaster: petiole erect, slightly convex at apex; gaster brownish-yellow, lighter than head and mesosoma; covered in appressed hairs, with scattered suberect to erect hairs throughout. Genitalia: parameres taper to rounded points apically, with many erect hairs at apices; cuspi meet digiti apically; digiti plate-like, apically becoming sickle-shaped, pointing ventrally.

Type Material

Acropyga (Rhizomyrma) donisthorpei Weber, 1944: 118 (w.). 2 syntype workers, GUYANA: Kartabu Point (N.A. Weber) (MCZC) [examined]. The designated lectotype is a worker labeled JSL TYPE # 114.

Acropyga (Rhizomyrma) oko Weber, 1944: 119 (w.). 2 syntype workers, GUYANA: Oko River, Cuyuni tributary (N.A. Weber) (MCZC) [examined]. NEW SYNONYM.

Acropyga (Rhizomyrma) paludis Weber, 1944: 121 (w.m.). 1 syntype worker, 1 syntype male, GUYANA: HMPS, Mazaruni River (N.A. Weber) (MCZC) [examined]. NEW SYNONYM.

References