Liracoxa nana, (S´aiz, 1971), 2025

3.1.10. L. nana ( S´aiz, 1971) comb. nov

S´aiz (1971): 106 (as C. nanus , original description); Reyes-Hern´andez et al. (2024): 38 (as Sphingoquedius nanus , taxonomic notes).

For diagnosis, distribution and bionomic see genus description above.

Type material examined: Holotype: male, pinned, with labels as follows: Nahuelbuta Malleco 3-XI, B. T. Higrofilo /Holotype/ C. nanus S´aiz, F. S´aiz det. 1970 [ MNNC]; paratypes: Nahuelbuta Malleco 3-XI, B. T. Higrofilo 1968/Paratype/ C. nanus Saiz ´, F. S´aiz det. 1970 [ 1♀ MNNC]; Cuesta Lastarria , no. dl. Lonchoche Chile, Ig. H. Franz / Paratype / C. nanus S´aiz, F. S´aiz det. 1970 [ 1♀ MNNC]; P. N. Puyehue , Ulmohojarasca 24-X-67/ Paratype / C. nanus Saiz ´, F. S´aiz det. 1970 [ 1♀ MNNC]. Other material examined: see Supplementary File 1.

3.1.11. Redescription

Measurements Ƌ [min–max (average); n = 5]:

FBL = 1.65–2.08 (1.95); TL = 3.37–4.63 (3.89); HW = 0.64–0.66 (0.65); HL = 0.58–0.69 (0.65); HW/HL = 0.96–1.13 (1.01); PW = 0.76–0.83 (0.8); PL = 0.34–0.78 (0.66); PW/PL = 1.05–2.44 (1.36); EW = 0.79–0.85 (0.81); EL = 0.63–0.70 (0.65); PW/HW = 1.20–1.25 (1.24).

Measurements ♀ [min–max (average); n = 5]: FBL = 2.03–2.20 (2.10); TL = 3.77–4.53 (4.12); HW = 0.68–0.71 (0.70); HL = 0.59–0.73 (0.68); HW/HL = 0.95–1.19 (1.03); PW = 0.80–0.86 (0.84); PL = 0.73–0.78 (0.75); PW/PL = 1.10–1.17 (1.12); EW = 0.86–0.98 (0.91); EL = 0.64–0.70 (0.67); PW/HW = 1.18–1.25 (1.21).

Head about as wide as long; dorsally and ventrally glossy, with micropunctures; with microsculpture of transverse waves, without coarse non-setiferous punctures; posterior angles indistinct with sparse setiferous punctures of medium and mostly small size; eyes large (EYL/HL = x = 0.73), filling at least 70 % of head length in lateral view. Distance between eyes approximately 0.6 times the length of eyes in both sexes.

Antennal proportions as follows: a1 1.4 times as long as a2; antennomeres 2 to 5 gradually getting shorter; antennomeres 5 to 9 subequal in length; a10 slightly longer a9; a11 1.4 times as long as a 10 in both sexes.

Pronotum slightly wider than long, convex, anterior angles slightly more curved inward than posterior angles. Sublateral setiferous punctures absent. Flexible postcoxal hypomeral extension (process) triangular, as wide as long, not interrupted by inferior line.

Elytra distinctly shorter than pronotum. Wings reduced. Empodial setae as long as tarsal claws; metatrochanter apically sharply pointed.

Abdomen with tergite VII without white fringe along posterior edge; male sternite VIII with broad and shallow U-shaped emargination; tergite X in males apically subtruncate; female tergite X emarginate medio-apically; male sternite IX with basal portion distinctly longer than distal portion, with basal portion asymmetrical and distal portion with median emargination.

Aedeagus ( Fig. 7E and F View Fig ), its total length ~ 0.77 mm. Median lobe rod-like with internal sac containing copulatory sclerites. Paramere in parameral view wider than, and extending over the apex of the median lobe, converging to subrectangular apex; in lateral view paramere concave with small translucent peg setae at the apex.

Comparison. In addition to the diagnosis of the genus, L. nana , the sole species of its genus, differs significantly from all species of the genus Chimalfus in the shape of the head and pronotum chaetotaxy, particularly whit allometric effect ( Fig. 9 View Fig ; see section 3.2 for more details).