Achilia caracolana Jeannel, 1962

Kurbatov, Sergey A., Cuccodoro, Giulio & Sabella, Giorgio, 2018, A revision of the Chilean Brachyglutini – Part 3. Revision of Achilia Reitter, 1890: A. frontalis species group (Coleoptera: Staphylinidae: Pselaphinae), Revue suisse de Zoologie 125 (1), pp. 165-188 : 176

publication ID	https://doi.org/ 10.5281/zenodo.1196048
DOI	https://doi.org/10.5281/zenodo.5589388
persistent identifier	https://treatment.plazi.org/id/A7582020-FF8C-FFF3-FEF3-FA8A52F8EFA2
treatment provided by	Plazi
scientific name	Achilia caracolana Jeannel, 1962
status

Treatment

Achilia caracolana Jeannel, 1962 View in CoL

Figs 24 View Figs 24-29 , 30 View Figs 30-34 , 35, 41 View Figs 35-43 , 44, 47 View Figs 44-52 , 65, 67, 69, 84

Achilia caracolana Jeannel, 1962: 409 View in CoL fig. 163 (aedeagus).

Type material (7 ex.): CENTRAL CHILE: Región Bío Bío : Concepción prov.: MHNS; 1 ♂ (holotype of Achilia caracolana n° 1685); Cerro Caracol; 24.V.1957; G. Kuschel. – MNHN; 2 ♂ and 4 ♀ (paratypes); Cerro Caracol; 36° 50’S; 23.V.1957; G. Kuschel.

Additional material (318 ex.): See Appendix 1.

Description: Body 1.5-1.8 mm long, entirely reddish or reddish brown, with palpi yellowish. Head with eyes longer than temples. Pronotum slightly wider than head, with maximal width on anterior half; median antebasal fovea smaller than lateral ones. First abdominal tergite with basal striae parallel, extending to about quarter of paratergal length, and separated at base by more than one-third of tergal width.

Male: Head as in Figs 65 and 67 View Figs 65-70 , with deep lateral pits surmounted on each side of eyes by small tooth apically truncated ( Fig. 69 View Figs 65-70 ); large frontal protuberance convex with distinct V-shaped median impression reaching anteriorly to vertexal sulcus. Antennae ( Fig. 30 View Figs 30-34 ) with scape and pedicel longer than wide; antennomere III as long as wide; antennomere IV slightly wider than long; antennomere V slightly longer than wide; antennomeres VI-VIII distinctly wider than long; antennomere IX transverse with protruding mesal margin pointed at middle and bearing two long setae; antennomere X barely longer than wide, wider and longer than IX, with mesal margin apically hollowed, basally projecting and bearing two long and large setae as well as a tuft of shorter setae; antennomere XI elongate, longer than VIII-X combined, its medial margin bearing long subbasal setae. Metasternum with deep and broad ovoidal median impression, posterior edges of the latter densely pubescent. Legs with ventral margin of mesotrochanters ( Fig. 41 View Figs 35-43 ) bearing two short spines; profemora ( Fig. 35 View Figs 35-43 ) strongly thickened, with ventral margin finely denticulate and bearing short modified setae on basal third; mesofemora slightly thickened; protibiae ( Fig. 44 View Figs 44-52 ) slightly thickened with mesal margin bearing small subapical spine; mesotibiae ( Fig. 47 View Figs 44-52 ) thickened with mesal margin bulging at middle and bearing apically pubescent subbasal spur; metatibiae slightly sinuate on distal half. Abdominal tergites unmodified; first abdominal ventrites with large median impression, all other ventrites flattened at middle; ventrite I with short median carina extending from posterior margin to posterior edge of median impression. Aedeagus ( Fig. 24 View Figs 24-29 ) 0.30-0.325 mm long; dorsal plate ovoid with dorsal longitudinal struts divergent; copulatory pieces consisting of pair of long medial sclerites recurved and strongly sclerotised at base, and apically bifid. Parameres wide with very long seta on poorly developed outer lobe; tips strongly recurved posteriorly and bearing thin and short subapical seta.

Female: Similar to male except: head, metasternum, abdominal ventrites, and legs unmodified; antennomeres IX and specially X shorter and less thickened than male.

Collecting data: Collected from September to May in Nothofagus , Cupressus and Eucalyptus forests; also in remnants, where it was found from sea level to about 1200 m. Most specimens were collected from sifted samples of leaf and log litter.

Distribution: Achilia caracolana is known from Central Chile, ranging from Chiloé Province to Talca Province ( Fig. 84 View Fig : green diamonds).