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Dilobocondyla eguchii
| Dilobocondyla eguchii | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Crematogastrini |
| Genus: | Dilobocondyla |
| Species: | D. eguchii |
| Binomial name | |
| Dilobocondyla eguchii Bharti & Kumar, 2013
| |
This species is collected from Da Lat City on the Langbiang Plateau in the southern parts of the central highlands, which has a mild climate: the mean monthly temperature extremes range from 13-22°C in January to 17-26°C in April-May (World Climate Guide 2012). The collection area (Vietnamese for "Valley of Love") is a highly-modified decorative floral garden.
Identification
Bharti and Kumar (2013) - As in D. eguchii the frontal carinae do not continue to the posterior corners of the head in Dilobocondyla borneensis, Dilobocondyla didita, Dilobocondyla gaoyureni, Dilobocondyla karnyi, Dilobocondyla propotriangulata, Dilobocondyla sebesiana and Dilobocondyla yamanei but D. eguchii can be separated from these by the following combination of features: the presence of 14 strong rugae between the frontal carinae at the level of eyes; abundant long, erect hairs on mandibles; much longer striations on the first segment of the gaster; petiole length (PTL) 0.53 mm; and brownish black body colour.
Dilobocondyla eguchii is most similar to Dilobocondyla borneensis, from which however it can be easily distinguished on the basis of the following combination of characters: presence of 14 (vs 10) strong rugae between frontal carinae at the level of the eyes; and gaster finely reticulate, sub-opaque, with first gastral tergite having fine and dense longitudinal striations starting from its base reaching up to almost half its length (at only the base in D. borneensis).
Other significant differences from D. borneensis include: posterior head margin non-emarginate (vs emarginate in borneensis); tibiae reticulate (vs finely longitudinally striate) and gaster with sparse pubescence (vs no pubescence).
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: 11.995499° to 11.995499°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Oriental Region: Vietnam (type locality).
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
Images from AntWeb
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| Holotype of Dilobocondyla eguchii. Worker. Specimen code antweb1008025. Photographer H. Bharti, uploaded by California Academy of Sciences. | Owned by VNMN, Hanoi, Vietnam. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- eguchii. Dilobocondyla eguchii Bharti & Kumar, 2013a: 30, figs. 1-4 (w.) VIETNAM.
- Type-material: holotype worker.
- Type-locality: Vietnam: Lam Dong Prov., Da Lat City “Thung Lung Tinh Yeu”, 4.i.2005 (K. Eguchi).
- Type-depository: VNMN.
- Status as species: Chen, et al. 2019: 138 (in key).
- Distribution: Vietnam.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
(Holotype): HL 1.13; HW 1.07; ED 0.27; SL 0.69; MFC 0.49; PRNW 0.80; ML 1.57; PTL 0.53; PTW 0.27; PTH 0.25; PPTL 0.42; PPTW 0.38; PPTH 0.34; GL 1.19; CI 94.69; SI 64.49; PTWI 50.94; PPTWI 90.48; TL 4.84 (1 measured) Head a little longer than broad, slightly broader posteriorly than in front, sides almost straight, posterior head margin not emarginate; posterior corners minutely dentate; mandibles with 6 teeth, masticatory margin of mandibles with large apical, preapical and basal tooth; clypeus flat, anterior border emarginate with a clear notch in the middle, sinuate at the corners; frontal area indistinct; antennae slender, 12-segmented with distinct 3-segmented club; scape slender, curved at the base, reaching up to 3/4 of head length; eyes large, placed at midlength of the head; mesosoma convex, not broader than head; pro-mesonotal suture indistinct; pronotum broader than long, its anterior lateral angles acute; metanotal groove broad, not deep; dorsal face of propodeum almost equal to its declivity and slanting towards declivity, propodeal lobes rounded; petiole almost twice as long as broad, with rounded sides, arcuate in profile, with a strong antero-ventral tooth; postpetiole longer than broad, broader posteriorly and forming a node; gaster broadly oval in dorsal view; legs with femora strongly incrassate and tibiae slightly thickened.
Head longitudinally rugose, occiput and sides rugoreticulate, with 14 strong rugae between frontal carinae at the level of eyes; interrugal space punctured, sub-opaque; frontal carinae diverging, not continuing to the posterior corners of the head; antennal scrobes only moderately deep; mandibles longitudinally rugose, interrugal space smooth and shiny; clypeus rugulose, sub-opaque, with strong median and lateral carinae; mesosoma, petiole and postpetiole rugoreticulate and sub-opaque; meso-metapleuron longitudinally rugose except for smooth and shiny upper half of metapleuron; propodeal declivity smooth and shiny; gaster finely reticulate, sub-opaque, with first segment fine and dense longitudinal striations starting from its base reaching up to almost half of its length; legs subopaque and punctate.
Body brownish black; mesosoma, petiole and postpetiole with reddish tinge; mandibles, scape and trochanter yellowish brown. Whole body covered with abundant, erect, long, blunt, whitish pilosity, gaster with sparse pubescence.
Type Material
- Holotype, worker, "Thung Lung Tinh Yeu", Da Lat City, Lam Dong Province, 1550m, Vietnam, 11°59′44″N 108°27′20″E / 11.995499°N 108.455486°E, 4 January 2005, K. Eguchi, Vietnam National Museum of Nature, Hanoi.
Etymology
The species is named in honour of Dr Katsuyuki Eguchi who collected and generously donated it for the present study.
References
- Bharti, H.; Kumar, R. 2013. Five new species of Dilobocondyla (Hymenoptera: Formicidae) with a revised key to the known species. Asian Myrmecology 5:29-44.
- Liu, C., Fischer, G., Hita Garcia, F., Yamane, S., Liu, Q., Peng, Y.Q., Economo, E.P., Guénard, B., Pierce, N.E. 2020. Ants of the Hengduan Mountains: a new altitudinal survey and updated checklist for Yunnan Province highlight an understudied insect biodiversity hotspot. ZooKeys 978, 1–171 (doi:10.3897/zookeys.978.55767).
References based on Global Ant Biodiversity Informatics
- Zryanin V. A. 2015. Important supplements to the ant fauna of Vietnam. Proceedings of the 10th ANeT International Conference, 23-26 October 2015, University of Kelaniya, Sri Lanka. 24.