Strumigenys augustandrewi

AntWiki - Where Ant Biologists Share Their Knowledge
Jump to navigation Jump to search
Strumigenys augustandrewi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. augustandrewi
Binomial name
Strumigenys augustandrewi
(Longino, 2006)

Strumigenys augustandrewi inb0003666649 p 1 high.jpg

Strumigenys augustandrewi inb0003666649 d 1 high.jpg

Specimen Labels

This species occurs in mature cloud forest. It is known from four workers from four different Winkler samples of sifted litter from the forest floor. (Longino 2006)

Identification

Longino (2006) - This species is similar to Strumigenys longinoi. In Bolton's (2000: 147) key to Neotropical Pyramica, it fails at couplet 70, which differentiates Strumigenys prex and Strumigenys longinoi. Like S. prex, S. augustandrewi has the head less dorsoventrally flattened (maximum depth of head = 0.62 × HW) and with the mandibles fully closed the cuticular margins of the mandibles from which the teeth arise diverge anteriorly (they are parallel in S. longinoi). Like S. longinoi, the dorsum of the petiolar node is longer than wide, and it is a large species, similar in size to S. longinoi (S. prex is minute). The propodeal spines of S. longinoi are relatively short with well-developed infradental lamellae; in contrast, the spines of P. augustandrewi are longer, more spiniform, and without strongly developed infradental lamellae. The first gastral sternite of S. longinoi is strongly concave anteriorly, so that the gaster is teardrop-shaped in side view. The first gastral sternite of S. augustandrewi is less concave and the gaster is more elliptical in side view.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica (type locality).

Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Known only from the worker caste.

Nomenclature

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

  • augustandrewi. Pyramica augustandrewi Longino, 2006b: 140, figs. 22-24 (w.) COSTA RICA. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 116

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

Description

Worker

Holotype: ML 0.134, HL 0.746, HW 0.600, HD 0.372, MeL 0.763.

Mandible short and curving downward in profile; lateral head capsule with the antennal scrobe mostly or entirely smooth and shining; propodeal spines present (former Glamyromyrmex); leading edge of scape lacking erect setae; disc of postpetiole in dorsal view very broadly U-shaped, with an extremely deeply concave anterior face; spongiform tissue absent from ventral surface of petiole, postpetiole and first gastral sternite; face lacking erect setae; head in side view convex above and below, not flattened; pronotum in dorsal view elongate, anterior margin strongly convex, rounding into lateral margins; pronotal humeral hair absent; dorsum of petiolar node strongly reticulate rugose; gaster in lateral view relatively elliptical, not strongly concave near postpetiolar insertion.

Type Material

Holotype worker: Costa Rica: Heredia Prov., 16 km SSE La Virgen (10° 16' N, 84° 05' W), 1100 m elevation, 20. II.2001, leg. Project ALAS 11/WF/01/13, specimen code INB0003213484 (Instituto Nacional de Biodiversidad). Paratypes: 2 workers, same data as holotype but 11/ WF/01/23, INB0003213214 (Museum of Comparative Zoology), 11/WF/01/40, INB 0003213234 (JTLC); 1 worker, Costa Rica: Heredia Prov., 10 km NE Vara Blanca (10° 14' N, 84° 05' W), 1500 m elevation, 9.III.2005, leg. Project ALAS 15/WF/02/03, INB0003666649 (Los Angeles County Museum of Natural History).

Etymology

Named for my son August Andrew Longino.

References