Hylomyrma blandiens
Hylomyrma blandiens | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Formicidae |
Subfamily: | Myrmicinae |
Tribe: | Pogonomyrmecini |
Genus: | Hylomyrma |
Species: | H. blandiens |
Binomial name | |
Hylomyrma blandiens Kempf, 1961 |
Ulyssea & Brandao (2021) report that Hylomyrma blandiens specimens are usually collected in samples of sifted leaf-litter in tropical rainforest. One Hylomyrma blandiens nest with 24 specimens (3Q 21W) was collected by M.A. Ulysséa in a fallen twig on the ground in the Peruvian Amazon (Madre de Dios, Estación Biológica Villa Carmen). Apart from the specimens, plant remains and parts of a Curculionidae imago were also found inside the nest, but there were no larvae or pupae.
Identification
Ulyssea & Brandao (2021): Head dorsum with regular and longitudinal striae, mesial striation in part directed to posterior margin and in part anteriorly divergent and posteriorly convergent, interspaces distinguishable; mesosoma covered with regular to irregular striae of variable thickness, interspaces indistinguishable; dorsal margin of petiole discontinuous, dorsum with same striation of mesosoma lateral; subtriangular projection on mesoventral surface of petiole; subpostpetiolar process weak, subtriangular; transverse striae on profemur posterior surface; protibia extensor surface striate; long striae on tergum of first gastral segment.
Hylomyrma blandiens, Hylomyrma dentiloba, and Hylomyrma jeronimae have similar morphology. Hylomyrma blandiens was described based on two specimens (worker and queen), and H. dentiloba based on one worker. Hylomyrma blandiens has a broad distribution in northwestern South America, from Bolivia to French Guiana (Fig. 84), whereas H. dentiloba and H. jeronimae are restricted to Central America (Figs. 84, 86).
Hylomyrma blandiens can be distinguished from H. dentiloba (characteristic in parentheses) in the distinguishable interspaces on head dorsum striation (vs. indistinguishable interspaces), the convex dorsal margin of mesonotum (vs. straight), the propodeal spine slightly longer than the dorsal tooth of propodeal lobe (vs. shorter), and the striae length on the first gastral segment similar to the postpetiole length (vs. shorter than the postpetiole length). Hylomyrma blandiens can be distinguished from H. jeronimae in the regular striae on the mesial region of head dorsum in part directed to posterior margin and in part anteriorly divergent and posteriorly convergent (vs. regular to irregular striae and divergent), the drop-shaped eye (vs. reniform), the longitudinal striation on the mesosomal dorsum (vs. striae assuming multiple directions), the discontinuous dorsal margin of petiole (vs. continuous), and the striae on the tergum of the first gastral segment extending up to its first third (vs. restricted to its basal region). Also, H. blandiens resembles H. macielae in the regular divergent-convergent striae on the mesial region of head dorsum, and the indistinguishable interspaces on the mesosomal striation. Hylomyrma blandiens can be distinguished from H. macielae in the longitudinal striae on the mesosomal dorsum (striae assuming multiple directions in H. macielae). The western limit of the distribution of H. blandiens, the east side of The Andes in Ecuador and Colombia (Fig. 84), overlaps in part with the distribution of H. macielae (Fig. 86).
There is morphological variation across the range of H. blandiens. Specimens from Ecuador have longer propodeal spines than elsewhere in the range. Specimens from Ecuador and Tachira, Venezuela, have a more pronounced mesoventral projection on the petiole. Striae on the mesial area of the head dorsum vary from being longitudinal to somewhat angled, divergent anteriorly and convergent posteriorly.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: 10.745° to -17.66666667°.
North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Neotropical Region: Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Panama, Peru, Suriname (type locality), Trinidad and Tobago, Venezuela.
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. |
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. |
Biology
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- blandiens. Hylomyrma blandiens Kempf, 1961b: 500, fig. 8 (w.q.) SURINAME.
- Type-material: holotype worker, 1 paratype queen.
- Type-locality: holotype Suriname: Dirkshoop, v.1959, soil sample, primary forest (J.v.d. Drift); paratype Suriname: La Poulle, viii.1959, soil sample, shrub on sand (J.v.d. Drift).
- Type-depository: MZSP.
- Ulysséa & Brandão, 2021: 31 (m.).
- Status as species: Kempf, 1964e: 55 (in key); Kempf, 1972a: 118; Kempf, 1973b: 231 (redescription); Kempf, 1975c: 346; Kutter, 1977a: 88; Brandão, 1991: 347; Bolton, 1995b: 213; Bezděčková, et al. 2015: 117; Pierce, M.P., Branstetter, et al. 2017: 137; Fernández & Serna, 2019: 797; Ulysséa & Brandão, 2021: 28 (redescription).
- Distribution: Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Panama, Peru, Suriname, Trinidad, Vemezuela.
Type Material
- Holotype: SURINAM[E: Saramacca]: Dirkshoop, v.1959, I.v.d. Drift col., [soil sample from primary forest], 27-iiicd-10 (1W) (ANTWEB-1008990 MZSP67313) [MZSP] [examined by Ulyssea & Brandao (2021)].
- Paratype: SURINAM[E: Saramacca]: La Poulle, viii.1959, I.v.d. Drift col., [soil sample from shrub on sand], 31-xivb-8 (1Q) (MZSP67314) [MZSP] [examined by Ulyssea & Brandao (2021)].
Description
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).
- Franco, W., Ladino, N., Delabie, J.H.C., Dejean, A., Orivel, J., Fichaux, M., Groc, S., Leponce, M., Feitosa, R.M. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674, 509–543 (doi:10.11646/zootaxa.4674.5.2).
- Kempf, W. W. 1961b. A survey of the ants of the soil fauna in Surinam (Hymenoptera: Formicidae). Stud. Entomol. 4: 481-524 (page 500, fig. 8 worker, queen described)
- Kempf, W. W. 1973b. A revision of the Neotropical myrmicine ant genus Hylomyrma Forel (Hymenoptera: Formicidae). Stud. Entomol. 16: 225-260 (page 230, see also)
- Ulyssea, M.A., Brandao, C.R.F. 2021. Taxonomic revision of the Neotropical ant genus Hylomyrma Forel, 1912 (Hymenoptera: Formicidae: Myrmicinae), with the description of fourteen new species. Zootaxa 5055, 1–137 (doi:10.11646/zootaxa.5055.1.1).*Ulysséa, M.A., Farder-Gomes, C.F., Prado, L.P. 2024. Biological notes, nest architecture, and morphology of the remarkable ant Hylomyrma primavesi Ulysséa, 2021 (Hymenoptera: Formicidae: Myrmicinae). Myrmecological News 34, 1-20 (doi:10.25849/MYRMECOL.NEWS_034:001).
References based on Global Ant Biodiversity Informatics
- Brandao, C.R.F. 1991. Adendos ao catalogo abreviado das formigas da regiao neotropical (Hymenoptera: Formicidae). Rev. Bras. Entomol. 35: 319-412.
- Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
- Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
- Kempf W. W. 1961. A survey of the ants of the soil fauna in Surinam (Hymenoptera: Formicidae). Studia Entomologica 4: 481-524.
- Kempf W. W. 1973. A revision of the Neotropical myrmicine ant genus Hylomyrma Forel (Hymenoptera: Formicidae). Studia Entomologica 16: 225-260.
- Kempf W. W. 1975. Miscellaneous studies on neotropical ants. VI. (Hymenoptera, Formicidae). Studia Entomologica 18: 341-380.
- Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
- Pierce M. P., M. G. Branstetter, and J. T. Longino. 2017 . Integrative taxonomy reveals multiple cryptic species within Central American Hylomyrma FOREL, 1912 (Hymenoptera: Formicidae). Myrmecological News 25: 131-143.