Achilia trulla, Sabella & Cuccodoro & Kurbatov, 2019

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), Revue suisse de Zoologie 126 (1), pp. 127-145 : 141-143

publication ID 10.5281/zenodo.2619528


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scientific name

Achilia trulla

n. sp.

Achilia trulla n. sp.

Figs 6 View Figs 1-6 , 17 View Figs 15-18 , 24 View Figs 19-28 , 47-50 View Figs 47-50 , 58 View Fig

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 View Figs 47-50 ; 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 View Figs 15-18 , 49-50 View Figs 47-50 ) 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 View Figs 19-28 ); profemora and mesofemora slightly thickened; distal half of metatibiae slightly sinuate. Abdominal tergites and ventrites unmodified. Aedeagus ( Fig. 6 View Figs 1-6 , 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 View Fig : 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 View Figs 47-50 ), features of the antennae ( Figs 17 View Figs 15-18 , 49-50 View Figs 47-50 ), and shape of the aedeagus ( Fig. 6 View Figs 1-6 ).


USA, Illinois, Chicago, Field Museum of Natural History (also used by Finnish Museum of Natural History)


Field Museum of Natural History