Echinopla senilis

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Echinopla senilis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Echinopla
Species group: striata
Species: E. senilis
Binomial name
Echinopla senilis
Mayr, 1862

Echinopla senilis casent0914950 p 1 high.jpg

Echinopla senilis casent0914950 d 1 high.jpg

Specimen Labels

Identification

Zettel and Laciny (2015) - Echinopla senilis is very similar to Echinopla lineata. With more specimens of E. lineata available, some differences given by Mayr (1862) and subsequently by Mayr (1865) are not diagnostic. In fresh specimens of E. lineata the appressed hair is as abundant as in Echinopla senilis, and the shape of the petiole is rather variable. A bluish black colour of the body (“blauschwarz” in Mayr 1862, “dunkelblau” in Mayr 1865) can hardly be recognized in the lectotype of E. senilis. However, the sculptural differences are rather strong and were clearly pointed out by Gustav Mayr (1862, 1865): On the clypeus and on the sides of the mesosoma the striation is regularly striate in E. lineata whereas it is intermixed with punctures in E. senilis; at the hind margin of the propodeum and on the posterior face of the petiole, the sculpture consists of transverse striae in E. lineata whereas it is irregular and fine in E. senilis. Moreover the propodeum is anteriorly more strongly, more roundly constricted in E. senilis.

Distribution

Distribution based on Regional Taxon Lists

Oriental Region: India, Nicobar Island (type locality).


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • senilis. Echinopla senilis Mayr, 1862: 690 (w.) INDIA (Nicobar Is).
    • Subspecies of lineata: Emery, 1896d: 382.
    • Raised to species: Zettel & Laciny, 2015: 118.

Type Material

Lectotype (worker, designation by Zettel & Laciny, 2015) from “Sambelong” (Mayr 1862). Although the collection of Naturhistorisches Museum Wien, Vienna contains two specimens labelled as E. senilis, only one specimen fairly agrees with Mayr’s (1862) original description and is designated as the lectotype. This lectotype does not bear a locality label and we do not know about records that connect the code letter K with a specific locality of the Novara expedition. We trust Mayr (1862) that the type was collected in “Sambelong”, a name for the Southern Group of the Nicobar Islands. The second specimen in NHMW was probably mislabelled by the former curator Anton Handlirsch (1865–1935) when he integrated Mayr’s collection into the museum’s main collection. It is a typical specimen of E. lineata and bears the same code letter Q as the lectotype of E. lineata.

Zettel & Laciny (2017) - Unexpectedly, a hitherto unrecognized syntype was found in the collection of Carlo Emery in MCSN. It probably came to C. Emery by exchange with Gustav Mayr. The specimen largely agrees with the lectotype in the diagnostic characters given by Zettel & Laciny (2015) except that the most posterior part of the propodeum is transversely striate as in Echinopla lineata. Like the lectotype it does not possess a bluish shimmer as described by Mayr (1862, 1865). Label details: 1 paralectotype (worker, MCSN), labelled "O", "Novara\ 1857–59.\Reise", "Echinopla\ senilis Mayr\ Mus. Wien. Typus", "MUSEO GENOVA\ coll. C. Emery\ (dono 1925)", "Echinopla\ senilis\ det. Herbert Zettel 2015", "Ripreparata\ 27.X.2015 R. Poggi", "Echinopla senilis\ Mayr, 1862\ PARALECTOTYPE", "G2", "Paralectotypus\ Echinopla\ senilis Mayr, 1862\ H. Zettel & A. Laciny 2016".

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

Description

Worker

Zettel and Laciny (2015) - Lectotype. TL 7.2; HW1 1.85; HW2 1.80; HL 1.67; EL 0.37; SL 1.72; SW 0.20; HaL 0.36; PML 1.30; PMW 1.63; PpL 1.13; PpW 1.28; PH 0.50; PL 0.55; PW 1.28; GL 1.96; GW 2.15. Indices: CI 110; SI 93; MI 149.

Zettel & Laciny (2017) - Measurements of paralectotype: TL 7.37; HW1 1.96; HW2 1.91; HL 1.89; EL 0.40; SL n.a.*; SW n.a.*; HaL n.a.*; PML 1.39; PMW 1.67; PpL 1.30; PpW 1.37; PH 0.51; PL 0.59; PW 1.28; GL 2.25; GW 2.22. Indices: CI 103; SI n.a.*; MI 161. *Both antennae missing.

References