Dilobocondyla silviae

AntWiki: The Ants --- Online
Dilobocondyla silviae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Dilobocondyla
Species: D. silviae
Binomial name
Dilobocondyla silviae
Zettel & Bruckner, 2013

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Nothing is known about the biology of Dilobocondyla silviae.

Identification

Zettel and Bruckner (2013) - Worker: Blackish brown; scape and distal tarsomeres yellow. Posterior margin of head concave. Frontal carinae strong, reaching posterior corners of head. Sculpture of head and mesosoma moderately coarse; interspaces mostly reticulated and matt. Petiole slender, PtI 191 - 195.

This species is very similar to Dilobocondyla chapmani sensu lato in most characteristics, but immediately distinguishable by blackish colour, small size, a very distinct micro-reticulum on the dorsum of the mesosoma, and by slightly smaller PtI (191 - 195 vs. 202 - 210). It can be distinguished from small specimens of the D. chapmani complex (see notes above) by a very different form of the propodeum, which is not compressed.

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: 10.86666667° to 10.86666667°.

 
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Indo-Australian Region: Philippines (type locality).

Distribution based on AntMaps

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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

Known only from the worker caste.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • silviae. Dilobocondyla silviae Zettel & Bruckner, 2013: 138, figs. 2, 8, 14 (w.) PHILIPPINES (Leyte I.).
    • Type-material: holotype worker, 1 paratype worker.
    • Type-locality: holotype Philippines: Leyte I., Leyte Prov., Baybay, LSU, 50-100 m., Calbiga-a River, 20-21.iii.2005, no. 422 (Zettel & Pangantihon); paratype with same data.
    • Type-depositories: NMPM (holotype); HSZC (paratype).
    • Status as species: Chen, et al. 2019: 138 (in key).
    • Distribution: Philippines (Leyte).

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

Description

Worker

Holotype: TL 3.91; HW 1.01; HL 1.07; CI 94; SL 0.61; SI 60; PnW 0.68; PtL 0.41; PtH 0.20; PtW 0.21; PtI 195; PpL 0.31; PpH 0.30; PpW 0.31. Paratype: TL 4.06; HW 1.08; HL 1.17; CI 92; SL 0.68; SI 63; PnW 0.76; PtL 0.42; PtH 0.21; PtW 0.22; PtI 191; PpL 0.34; PpH 0.31; PpW 0.33.

Colour: Body uniformly blackish brown. Mandibles medium brown. Antennae chiefly brown; scape and base of funiculus yellow. Legs brown; trochanters, bases of femora, and distal tarsomeres pale.

Structures: Head dorsally with almost regular striation and very few interconnections posteriorly, interspaces filled with dense micro-reticulum; sides of head with reticulated rugae. Posterior margin of head concave; hind corners angular. Frontal carinae and antennal scrobes reaching hind corners. Clypeus with numerous longitudinal rugae; interspaces with reduced micro-reticulum, shiny.

Mesosoma entirely reticulated; rugae forming moderately large meshes; an imaginary line between pronotal corners transecting 12 meshes; interspaces shiny laterally, but micro-reticulated dorsally. Petiole and postpetiole with micro-reticulum that is strongly reduced on petiole posterodorsally and laterally. Petiole posterodorsally and laterally with coarse irregular rugae, slender; its dorsal outline in lateral view almost evenly convex, but slightly concave before hind margin; anteroventral tooth spine-like, slender. Postpetiole in lateral aspect with broadly rounded apex; both anterodorsal and posterodorsal surface with longitudinal rugae. Gaster tergite 1 at base with very dense fine striation distinctly longer than longest seta on postpetiole.

Type Material

Etymology

This species is dedicated to the second author’s wife.

References

References based on Global Ant Biodiversity Informatics

  • Zettel H., and H. Bruckner. 2013. Four new species of Dilobocondyla (Hymenoptera: Formicidae) from the Philippines. Zeitschrift der Arbeitsgemeinschaft Österreichischer Entomologen 65: 135-150.