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Acropyga donisthorpei
| Acropyga donisthorpei | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Formicinae |
| Tribe: | Plagiolepidini |
| Genus: | Acropyga |
| Species group: | donisthorpei |
| Species: | A. donisthorpei |
| Binomial name | |
| Acropyga donisthorpei Weber, 1944
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| Synonyms | |
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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) - A member of the Acropyga donisthorpei species group. 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
Latitudinal Distribution Pattern
Latitudinal Range: 6.468° to -14.56666667°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
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
Distribution based on AntWeb specimens
Check data from AntWeb
Countries Occupied
| Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species. |
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Estimated Abundance
| Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species. |
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Biology
Castes
Phylogeny
| Acropyga |
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Based on Blaimer et al., 2016. Note only selected Acropyga species are included, and undescribed species are excluded.
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- donisthorpei. Acropyga (Rhizomyrma) donisthorpei Weber, 1944: 118, figs. 9, 20, 21 (w.) GUYANA.
- Type-material: lectotype worker (by designation of LaPolla, 2004a: 58), 1 paralectotype worker.
- [Note: original description says “workers of one colony”, which implies >2 specimens.]
- Type-locality: lectotype Guyana (“British Guiana”): Kartabo Point, between Cuyuni and Mazaruni rivers, 15.vi.1936, no. 474 (N.A. Weber); paralectotype with same data.
- Type-depository: MCZC.
- LaPolla, 2004a: 58 (q.m.).
- Status as species: Kempf, 1972a: 17; Bolton, 1995b: 57; LaPolla, 2004a: 58 (redescription); Bezděčková, et al. 2015: 111.
- Senior synonym of oko: LaPolla, 2004a: 58.
- Senior synonym of paludis: LaPolla, 2004a: 58.
- Distribution: Bolivia, Guyana, Peru.
- oko. Acropyga (Rhizomyrma) oko Weber, 1944: 119, fig. 16 (w.) GUYANA.
- Type-material: syntype workers (number not stated, “several….one colony”).
- [Note: LaPolla, 2004a: 58, cites 2w syntypes MCZC.]
- Type-locality: Guyana (“British Guiana”): Oko River, tributary of Cuyuni River, ca 37 mi. from Kartabo Point, 19.vi.1936, no. 481 (N.A. Weber).
- Type-depository: MCZC.
- Status as species: Kempf, 1972a: 17; Bolton, 1995b: 57.
- Junior synonym of donisthorpei: LaPolla, 2004a: 58.
- paludis. Acropyga (Rhizomyrma) paludis Weber, 1944: 121, fig. 15 (w.m.) GUYANA.
- Type-material: syntype workers (number not stated), 1 syntype male.
- [Note: LaPolla, 2004a: 58, cites 1w, 1m syntypes MCZC.]
- Type-locality: Guyana (“British Guiana”): Mazaruni River, 1 mi. back of Forest Settlement, 21.viii.1935, no. 308 (N.A. Weber).
- Type-depository: MCZC.
- Status as species: Kempf, 1972a: 17; Bolton, 1995b: 58.
- 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
- Albuquerque, E., Prado, L., Andrade-Silva, J., Siqueira, E., Sampaio, K., Alves, D., Brandão, C., Andrade, P., Feitosa, R., Koch, E., Delabie, J., Fernandes, I., Baccaro, F., Souza, J., Almeida, R., Silva, R. 2021. Ants of the State of Pará, Brazil: a historical and comprehensive dataset of a key biodiversity hotspot in the Amazon Basin. Zootaxa 5001, 1–83 (doi:10.11646/zootaxa.5001.1.1).
- LaPolla, J.S. 2004a. Acropyga of the world. Contributions of the American Entomological Institute. 33(3):1-130. (page 58, senior synonym of oko, and paludis)
- Park, J., Park, J. 2021. Complete mitochondrial genome of the gate-keeper ant Colobopsis nipponica (Wheeler, W.M., 1928) (Formicidae: Hymenoptera). Mitochondrial DNA Part B 6, 86–88 (doi:10.1080/23802359.2020.1845581).
- Weber, N. A. 1944b. The neotropical coccid-tending ants of the genus Acropyga Roger. Ann. Entomol. Soc. Am. 37: 89-122 (page 118, figs. 9, 20, 21 worker described)
References based on Global Ant Biodiversity Informatics
- Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
- Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
- LaPolla J.S. 2004. Acropyga (Hymenoptera: Formicidae) of the world. Contributions of the American Entomological Institute 33(3): 1-130.
- Ryder Wilkie K.T., A. L. Mertl, and J. F. A. Traniello. 2010. Species Diversity and Distribution Patterns of the Ants of Amazonian Ecuador. PLoS ONE 5(10): e13146.doi:10.1371/journal.pone.0013146
- Weber N. A. 1944. The neotropical coccid-tending ants of the genus Acropyga Roger. Ann. Entomol. Soc. Am. 37: 89-122.