Dolichoderus modiglianii

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Dolichoderus modiglianii
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dolichoderinae
Genus: Dolichoderus
Species: D. modiglianii
Binomial name
Dolichoderus modiglianii
Emery, 1900

Dolichoderus modiglianii casent0905025 p 1 high.jpg

Dolichoderus modiglianii casent0905025 d 1 high.jpg

Specimen Labels

Synonyms

Believed to be a herdsmen species, little is known about the biology of Dolichoderus modiglianii.

Identification

Dill (2002) - A member of the Dolichoderus cuspidatus species group. Regarding its body shape, coloration, and fine sculpturing, modiglianii is very close to Dolichoderus feae. It differs, however, in the areolate sculpturing of the lateral portions of the head and the mesopleuron, the more distinctly overhanging propodeum, the higher mesonotum hump, and the distinct shape of the petiole scale. Yet, particularly the feae series from Southern Thailand show clinal transitions in the areolate sculpturing of the head. Although a definitive statement on the species status is particularly difficult due to the small amount of material available and also the geographical di stance of the allopatric feae and modiglianii, on the basis of the examined material it appears justifiable retain the species status for modiglianlii.

Keys including this Species

Distribution

Mentawei Islands: Sipora.

Distribution based on Regional Taxon Lists

Indo-Australian Region: Indonesia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • modiglianii. Dolichoderus modiglianii Emery, 1900d: 693, fig. 9 (w.) INDONESIA (Mentawei I.). Combination in D. (Hypoclinea): Emery, 1913a: 14. Senior synonym of rubescens: Dill, 2002: 47.
  • rubescens. Dolichoderus modiglianii var. rubescens Emery, 1900d: 693 (w.) INDONESIA (Mentawei I.). Combination in D. (Hypoclinea): Emery, 1913a: 14. Junior synonym of modiglianii: Dill, 2002: 47.

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

Description

Worker

Dill (2002) - Lectotype in brackets: HL 1.24-1.49 [1.35]; HW 1.12-1.39 [1.25]; EL 0.27-0.31; SL 1.18-1.33 [1.25]; AL 1.72-2.13 [1.97]; PnW 0.82-0.94 [0.86]; ML 0.55-0.65; MW 0.36-0.43; PpL 0.71-0.90 [0.82]; PpW 0.61-0.69 [0.61]; PpH 0.69-0.82 [0.76]; PpSW 0.30-0.45 [0.35]; PtW 0.43-0.49 [0.43]; TL 4.76-5.89 [5.69]. Indices: CI 89-96 [93]; OI 22-25; SI 92-112 [100]; MI 145-160; PpSPpI 50-70 [58]; (n = 11).

Head: Yellow-brown, reel-brown, castaneous to black (lectotype). Entire head finely and densely punctate (= micro-imbricate); in addition to this fine sculpturing, particularly on the lateral port ions of the head, areolate-rugose, i.e. a net- like structure of irregular and shallow pits; vertex only finely wrinkled; matt; pubescent, void of erect hairs. Head somewhat longer than wide, suboval, sides rounded, occipital margin emarginate, without superoccipital pit.

Alitrunk: Yellow-brown, red-brown, castaneous to black (lectotype); legs reddish, yellow, or brown. Finely pubescent; erect hairs scarce and restricted to ventral face and coxae; finely punctate or reticulate (= micro-imbricate), partly (mesonotum, mesopleuron, propodeum) somewhat coarser reticulate or areolate-rugose, wrinkles on mesopleuron not ± parallel. Hump of mesonotum in profile ± flat and evenly rounded, with median depression; processes at anterior margin of mesopleuron either completely lacking or weakly developed; propodeum high rising, distinctly overtopping the mesonotum; posterior margin of ascending face of propodeum very sharp, distinctly overhanging the concavely curved declivity (fig. III- 12b); declivity of propodeum ± smooth und shining.

Petiole: Finely (micro-imbricate) reticulate-punctate and pubescent. Apical margin of scale usually slightly emarginate, the lateral corners somewhat expanded to tips, in profile tapering off towards the top.

Gaster: Basal portions of tergites yellow or yellow-brown, rest medium-brown. Very finely reticulate, with fine, light -grey, ± dense pubescence that dorsally merges in a median line; erect hairs only on ventral face and tip of gaster.

Type Material

Dill (2002) - Syntype workers, Mentawei, Sipora, Sereinu (E. Modigliani) (Museo Civico di Storia Naturale, Genoa, Musee d'Histoire Naturelle Genève, Berlin Museum für Naturkunde der Humboldt-Universität) [examined]; Mentawei, Sipora, Si Oban (E. modigliani) (Leiden Nationaal Natuurhistorische Museum) [examined]. One syntype here designated as Lectotype (MCSN).

References