Probolomyrmex lamellatus

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Probolomyrmex lamellatus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Proceratiinae
Tribe: Probolomyrmecini
Genus: Probolomyrmex
Species: P. lamellatus
Binomial name
Probolomyrmex lamellatus
Oliveira & Feitosa, 2019

Probolomyrmex lamellatus F25A.jpg

Probolomyrmex lamellatus F25C.jpg

The single known specimen of this species came from a leaf-litter sample collected in mature lowland Amazon forest.

Identification

Oliveira & Feitosa (2019) - Propodeum and petiole entirely emarginated posteriorly by a conspicuous lamella, without teeth. Postero-ventral lobe of petiole short and subquadrate. Subpetiolar process weakly developed. Prora weekly developed and dorsal protuberance on the posterior region of the first gastral tergite weakly developed.

Probolomyrmex lamellatus is similar to Probolomyrmex cegua, but the head is comparatively longer, the propodeum and petiole are unarmed and completely emarginated by a dark lamella, and the postero-ventral lobe of petiole is subquadrate.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (type locality).


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Oliveira & Feitosa (2019). Figure 24. SEM micrography of Probolomyrmex lamellatus. (holotype worker - DZUP 549767). A. Habitus. B. Mandibles (he = hypostomal margin; esm = external surface of basal region of mandible). C. Antenna (ap = antennal pit; lah = long appressed hair; sh = short hair). D. Metapleural gland. E. Petiole (pil = postero-inferior lobe of petiole; sp = subpetiolar process).

Nomenclature

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

  • lamellatus. Probolomyrmex lamellatus Oliveira & Feitosa, 2019: 86, figs. 24, 25 (w.) BRAZIL.

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

Description

Worker

(n=1) HL 0.50; HW 0.30; SL 0.30; WL 0.59; PL 0.30; PW 0.24; PH 0.20; TL 2.11; CI 59.3; SI 59.3; PI 78.5.

Frontoclypeal shelflike projection micropunctate; mandibles foveated; external surface of mandibular basal margin large and imbricated. Antennal funiculi with pits; tip of apical segment of antennae bearing different sized pits. Mesopleuron foveate and micropunctate; metapleuron alveolate and foveated; lateral faces of propodeum foveated and micropunctate; alveoli denser just above metapleural gland orifice; opening of metapleural gland large, with smooth anterior region, surrounded by rows of hairs. Petiolar node and postero-ventral lobe of petiole with incomplete foveae and micropunctures; latero-ventral region of petiole and subpetiolar process alveolate. Posterior region of second gastral tergite with transversal rows of deep rounded pits.

Space between mesosomal foveae covered by dense pubescence. Head 1.8 times longer than wide. Hypostomal margin curved. Antennal scapes extend to head midlength, distance from scape apex to of head more than two times pedicel length (SI 59.3). Propodeum and petiole entirely emarginated posteriorly by a dark lamella, without teeth; Petiole 1.5 times longer than high (PI 78.5) posterior face short, straight, and smooth; postero-ventral lobe short and subquadrate; subpetiolar process weakly developed. First gastral segment with weakly developed prora and dorsal protuberance on posterior region of tergite weakly developed.

Type Material

  • Holotype: BRAZIL: Pará: Terra Santa, FLONA, Saracá-Taquera, Base Patauá, 1°51’27.23”S 56°27’48.4”W, 70m, 25–29.viii.2016, R.M. Feitosa, E.Z. Albuquerque, R. Silva col, Winkler (worker ) [DZUP, unique specimen identifier DZUP 549767].

Etymology

The epithet refers to the posterior lamella of the propodeum and petiole, an exclusive characteristic of this species.

References