Achilia trulla Sabella & Cuccodoro & Kurbatov 2019, n. sp.
Creators: name: Sabella, Giorgio
name: Cuccodoro, Giulio
name: Kurbatov, Sergey A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Achilia
Achilia trulla

description: Achilia trulla n. sp.
Figs 6, 17, 24, 47-50, 58
Holotype: FMNH; 1 ♂; SOUTHERN CHILI: Región Los Lagos: Osorno prov.: Puyehue National Park, Antillanca road, site 659; 720 m; 18-24.XII.1982; A. Newton & M. Thayer; Nothofagus ssp. forest, flight intercept trap.
Description: Body 1.45 mm long, reddish-brown, with darker abdomen, and reddish elytra; antennae, palpi and legs yellowish. Head with weakly protruding eyes, shorter than convex temples. Pronotum as wide as head; median antebasal fovea smaller than lateral ones. First abdominal tergite with basal striae extending to about one-third of paratergal length, and separated at base by about one-third of tergal width.
Male: Head as in Figs 47-48; frons with finely punctate and pubescent median depression with margins markedly raised and punctate, slightly expanded above eyes, the latter areas flattened and more densely punctate; anterior sides of head convergent. Antennae (Figs 17, 49-50) with scape and pedicel distinctly longer than wide; antennomere III as wide as long, antennomeres IV-V transverse; antennomere VI more than two times longer than wide with concave mesal margin; antennomere VII distinctly transverse; antennomere VIII transverse, its mesal margin projecting in large lamina; antennomere IX with mesal margin projecting in a long bilobed lamina bearing long and large apical setae; antennomere X strongly transverse, apical third of mesal margin projecting and bearing three long and thin setae; antennomere XI elongate and longer than VII-X combined, its surface with many tubercles. Metaventrite at middle slightly raised with faint median sulcus. Legs with trochanters very elongate; protrochanters bearing tuft of setae; ventral margin of mesotrochanters projecting posteriorly as short spine (Fig. 24); profemora and mesofemora slightly thickened; distal half of metatibiae slightly sinuate. Abdominal tergites and ventrites unmodified. Aedeagus (Fig. 6, dorsal longitudinal struts not shown) 0.30 mm long; medial sclerites apically pointed, and associated on each side with one pointed sclerite.
Female: Unknown.
Collecting data: Only one specimen collected in December in Nothofagus ssp. forest by flight intercept traps.
Distribution: Achilia trulla n. sp. is known only for the type locality in Region of Los Lagos (Osorno province) (Fig. 58: yellow stars).
Comments: Achilia trulla n. sp. is easily distinguished from the other members of the genus by the morphology of the male head (Figs 47-48), features of the antennae (Figs 17, 49-50), and shape of the aedeagus (Fig. 6).
description: Published as part of Sabella, Giorgio, Cuccodoro, Giulio & Kurbatov, Sergey A., 2019, A revision of the Chilean Brachyglutini - Part 4. Revision of Achilia Reitter, 1890: A. puncticeps and A. approximans species groups, with description of seven new species (Coleoptera: Staphylinidae: Pselaphinae), pp. 127-145 in Revue suisse de Zoologie 126 (1) on pages 141-143, DOI: 10.5281/zenodo.2619528