Achilia lobifera Jeannel 1962

Achilia lobifera Jeannel, 1962

Figs 13, 18, 27, 29, 34

Achilia lobifera Jeannel, 1962: 405, figs 153 (habitus), 154 (ae- deagus).

Type material (43 ex.): SOUTHERN CHILI: Región Magallanes y de la Antártica Chilena: Última Esperanza prov.: MHNS; 1 ♂ (holotype of Achilia lobifera n° 1678); Puerto Eden; 04.XII.1958; G. Kuschel. – MNHN; 2 ♀ (paratypes of A. lobifera); Wellington Island, Puerto Eden; 49° 09’S; 02.XII.1958; G. Kuschel; Nothophagus betuloides forest. – MNHN; 15 ♂ and 14 ♀ (paratypes of A. lobifera); same data; 04.XII.1958; G. Kuschel. – MNHN; 2 ♂ and 4 ♀ (paratypes of A. lobifera); same data; 06.XII.1958. – MNHN; 1 ♂ and 4 ♀ (paratypes of A. lobifera); Wellington Island, Puerto Eden, Carlos Islet.

Additional material (371 ex.): See Appendix 1.

Description: Body 1.30-1.45 mm long, reddish with darker head and abdomen, with yellowish maxillary palpi. Pubescence decumbent with dense and long setae, sparser on head and pronotum. Head wider than long; surface smooth, shiny, with some minute punctures; vertexal foveae shallow and large; eyes protruding, longer than convex temples. Pronotum wider than long and wider than head, with maximal width on anterior half; posterior portion of lateral outlines sinuate; disc convex, smooth and shiny; median antebasal fovea smaller than lateral foveae; basal margin bordered with row of contiguous shallow impressions. Elytra together wider than long with very protruding humeri; disc smooth, shiny, with some minute punctures; four basal elytral foveae (two lateral foveae very close); sutural stria entire; discal stria extending to about elytral midlength. Legs slender. Abdomen smooth, with some minute punctures; tergite I with basal striae subparallel and very short, extending to less than 1/6 paratergal length, separated at base by more than one-third of tergal width, with short and sparse setal brush between striae.

Male: Head as in Figs 27 and 29. Antennae (Fig. 13) with scape longer than wide; pedicel wider than long; antennomere III strongly tranverse; antennomere IV very big, longer than wide, flattened, with medial margin markedly enlarged and projecting downward, dorsal surface convex and covered with numerous large bristles; antennomere V wider than long; antennomere VI slightly longer than wide, antennomere VII distinctly longer than wide; antennomere VIII slightly wider than long; antennomere IX slightly wider than long; antennomere X distinctly wider than long; antennomere XI distinctly longer than wide, as long as VIII-X combined. Metasternum bearing large median sulcus with pubescent sides; mesotibiae forming stout subapical spur. Abdominal tergites and ventrites unmodified. Aedeagus (Fig. 18) 0.28-0.29 mm long; dorsal plate large with sides sinuate, dorsal stripes long and divergent; copulatory pieces consisting of pair of large sclerites apically enlarged and laterally ending in spine. Parameres with middle seta on distinct lobe, that seta very stout; tips broad and recurved posteriorly.

Female: Similar to male except: head with occiput only slightly swollen, frontal region flattened with slightly convergent sides and impressed vertexal sulcus; antennae unmodified, with antennomeres III to V longer than wide; metasternum convex; mesotibiae unmodified.

Collecting data: Collected from December to February in Nothofagus forest, temperate rainforest, mixed Fitzroya cupressoides forest, sclerophyll rainforest, Valdivian rainforest, and also scrub intergrading into sclerophyll rainforest at elevations ranging from sea level up to about 1000 m. Most specimens came from sifted samples of moss on logs, forest floor, tree trunks, and rocks, from vegetational debris, dead wood and branches, but also by flight intercept (window) and car traps.

Distribution: Achilia lobifera is distributed in Southern and Central Chile from Última Esperanza northward to Cautín provinces (Fig. 34). Mentioned also by Jeannel (1962: 407) from Ñuble prov.: Chillán Cordillera, 36° 54’ S, 2 ♂ and 3 ♀ (P. Germain), we could not locate these specimens and, consider this identification as doubtful.