Loncovilius hammondi, Reyes-Hernández & Hansen & Shaw & Solodovnikov, 2024

Reyes-Hernández, José L., Hansen, Aslak Kappel, Shaw, Josh Jenkins & Solodovnikov, Alexey, 2024, Phylogeny-based taxonomic revision and niche modelling of the rove beetle genus Loncovilius Germain, 1903 (Coleoptera: Staphylinidae: Staphylininae), Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 202 (1), pp. 1-42 : 26-27

Loncovilius hammondi sp.nov.

( Figs 5B, 7C, 10D–F, 12B, 13B, 14B)

Zoobank registration: urn:lsid:zoobank.org:act:4DCCE49B-5875-4A73-9DA6-203BC4455E20 .

Type material. Holotype: male, mounted, with genitalia in a separate microvial, with labels as follows: Wellington Is. Pto. Eden [-49.11, -74.40] 4.XII1958 / CHILE Fr Kuschel / HOLOTYPE Loncovilius hammondi des. Reyes-Hernández, Hansen, Jenkins Shaw et Solodovnikov 2022. Deposited at NHM . Paratypes: Wellington Is. Pto. Eden [-49.11, -74.40] 4.XII.1958 / CHILE Fr Kuschel [4♂ 8♀ NHM; 1♂ NHMD ex. NHM; 1♂ CZUG ex. NHM]; Nothofagus forest / CHILE HE6. Puerto Eden Isla Wellington [-49.11, -74.40] 49° S I200 ft. 2.xii.1958 [ 1♀ MNNC ex. NHM]; Chiloé S. Pedro [-43.32, -73.72] 10.XI.1958 / CHILE Fr Kuschel / Flowers of Pernettya mucronata /Qued. sp. 8/‘Loncovilius’ cf germaini Scheerp. P.M. Hammond det. 1980 [ 1♂ NHM]; CHILE: Cautín Pr. Volcán Villarrica [-39.36, -71.94], 1120m, site 654 15-29.xii.1982 Noth. Dombeyi-Saxe-gothea with Drimys A.Newton and M.Thayer / window trap [1♂ 1♀ FMNH]. All paratypes are supplied with the label: PARATYPE Loncovilius hammondi des. Reyes-Hernández, Hansen, Jenkins Shaw et Solodovnikov 2022.

Diagnosis: Head dorsally with microsculpture of transverse waves; gula with isodiametric microsculpture in the middle; females with a11 distinctly longer than a10 (a11:a10 ratio>1.5). Elytra reddish-brown, disc with coarse non-setiferous punctures and only a few rows of setiferous punctures, epipleura evenly setose. Protibiae not sexually dimorphic, in both sexes with laterodorsal row of thick spines. Tergite VIII with medial apical emargination in both sexes. Aedeagus as in Figure 10D–F.

Description: Measurements ♂ [min–max (average); N = 6]: FBL = 3.5–3.91 (3.67); TL = 6.7–7.31 (7.01); HW = 1.06– 1.16 (1.11); HL = 0.94–1.02 (0.97); HW/HL = 1.12–1.16 (1.14); PW = 1.36–1.51 (1.43); PL = 1.16–1.26 (1.21); PW/ PL = 1.17–1.2 (1.19); EW = 1.65–1.82 (1.76); EL = 1.38–1.63 (1.49); PW/HW = 1.29–1.3 (1.29).

Measurements ♀ [min–max (average); N = 6]: FBL = 3.88– 4.22 (4.04); TL = 7.06–8.88 (7.81); HW = 1.13–1.21 (1.18); HL = 0.98–1.07 (1.03); HW/HL = 1.13–1.19 (1.15); PW = 1.5–1.67 (1.58); PL = 1.23–1.37 (1.31); PW/ PL = 1.18–1.22 (1.20); EW = 1.9–2.3 (2.05); EL = 1.67–1.78 (1.7); PW/HW = 1.31–1.38 (1.33).

Head black to brown-black; most of antennae, pronotum, mouthparts, elytra, legs, and abdomen reddish-brown; pronotum, apical antennomeres, tibiae, and disc of abdominal segments darker.

Head transverse; dorsally and ventrally glossy with few micropunctures and microsculpture of transverse waves, with coarse non-setiferous punctures; posterior angles indistinct with few setiferous punctures of medium and small size. Eyes small (EYL/HL = x = 0.47), from 1.3 to 1.8 times longer than temples (in lateral view); distance between eyes about 1.7 times as long as length of eye in males and 1.68 times in females. Antennal insertions situated at equal distance from frontoclypeus and from eye; antennomeres 2 and 3 usually subequal in length; antennomeres 4 to 6 gradually reduced in length; antennomeres 7 to 10 subequal in length; antennomere 11 is from 1.53 to 1.69 times as long as antennomere 10 in males and from 1.63 to 1.71 times in females. Basal and parocular punctures usually single; posterior frontal puncture located anterior to temporal puncture; without small setiferous punctures between frontoclypeal punctures and anterior frontal punctures; ventral basal ridge rather straight in L-shape, almost united with gular sutures; postgenal ridge absent; postmandibular ridge distinctly separated from eye margin; well-developed PMP; nuchal ridge present laterally and dorsally, fused with infraorbital ridge; gula with microsculpture medially, gular sutures moderately separated. Mandibles with dorsolateral groove; labrum with subrectangular sclerotized region and emarginate apical margin; mentum with seta beta only; penultimate labial palpomere markedly dilated apicad, apical palpomere distinctly narrower than previous and more or less subconical.

Pronotum transverse, convex, evenly curved, with one PPDS and with an APP, without SLSP, with several coarse non-setiferous punctures; flexible postcoxal hypomeral extension (process) interrupted by inferior line. Elytra with epipleura evenly setiferous punctate; disc with only a few rows of setiferous punctures and with several coarse non-setiferous punctures. Mesosternum with four macrosetae arranged in a row medially.

Protibiae not sexually dimorphic, with laterodorsal row of thick spines in both sexes. In males, mesotarsomeres 1–4 with pale adhesive setae, mesotarsomeres 1–3 with terminal plate. In females, mesotarsomeres 2–4 with pale adhesive setae, without terminal plate. In both sexes, metatarsomeres 2–4 with pale adhesive setae, without terminal plate; metatarsomere 1 shorter than 5, metatarsomere 4 ventrally with apical margin slightly sinuate.

Abdominal tergites III and IV with two patches of punctures of moderate size and density, with middle impunctate line; tergite VIII emarginate medio-apically. Sternum III with basal transverse carina strongly arcuate; lateral tergal sclerites IX laterally flattened only in males. Male sternite VIII with a broad V-shaped emargination medially ( Fig. 14B); female sternite VIII with a U-shaped emargination medially; male sternite IX with an obtuse emargination medially, its basal portion shorter than distal portion; male tergite X truncate medially ( Fig. 12B); female tergite X truncate to slightly arcuate medially ( Fig. 13B); ovipositor, its second gonocoxite without macrosetae medially.

Aedeagus. As in Figure 10D–F; its total length ~1.21.

Etymology: The species epithet isa patronym in recognition of the late Peter. M. Hammond, a prominent coleopterist who also conducted some work on this genus, which was unpublished but which we were able to trace through his labels.

Distribution and habitat: Loncovilius hammondi is known only from Chile, from the Araucanía, Los Lagos, as well as from Magallanes and Chilean Antarctica regions. Known distribution consists of three widely separated areas, two of them confined to the Valdivian temperate forest and one to the Magellanic subpolar forest. It has been collected using window traps, and directly from flowers of Pernetya mucronata ( Ericaceae ).