Loncovilius edwardsianus (Korge, 1963)

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 : 31-32

Loncovilius edwardsianus (Korge, 1963)

( Figs 1A , 6A , 10L–N , 12E , 13E , 14E )

= Loncovilius edwardsi (Bernhauer, 1935) nec Quedius edwardsi Sharp, 1886 .

Bernhauer, 1935: 92 (as Quedius edwardsi , original description); Korge, 1963 (as Quedius edwardsianus , replacement name); Coiffait and Sáiz 1966: 413 ( Quedius edwardsianus , redescription without new material or data); Coiffait and Sáiz, 1968: 365 (listed as Quedius edwardsianus , without new data); Newton 2017: 28 (as Loncovilius edwardsianus , moved from Quedius to Loncovilius ).

Type material. Lectotype: (here designated): male, pinned, with genitalia in a separate microvial, with labels as follows: S. Chile: Llanquihue prov. F. and M. Edwards. B.M. 1927–63/ Casa Pangue [-41.04, -71.87] 4-10.xii.1926./Bernhauer det. [unreadable]/Chicago NHM M. Bernhauer collection/ Quedius edwardsi Brh. n. sp. / Edwardsi Bernhauer Quedius / LECTOTYPE Loncovilius edwardsianus (Korge, 1963) des. Reyes-Hernández, Hansen, Jenkins Shaw et Solodovnikov 2022. Deposited at FMNH. Paralectotype: male, pinned, with genitalia aưached to the card, with labels as follows: S. Chile: Llanquihue prov. F. and M. Edwards. B. M. 1927–63/Casa Pangue [-41.04, -71.87] 4-10.xii.1926./ Quedius edwardsi Bernh n. sp. / LECTOTYPE C.E.Toưenham of Q.edwardsi Bernh.Nec Sharp / Quedius ultor n. n. Toưenham/edwardsi repl. By edwardsianus Korge 1963 M. K. Ŋayer det. 2005/NHMUK015024785/ PAÞLECTOTYPE Loncovilius edwardsianus (Korge, 1963) des. Reyes-Hernández, Hansen, Jenkins Shaw et Solodovnikov 2023. Deposited at NHM.

Other material eoamined: Supporting Information, File S7.

Diagnosis: Nuchal ridge absent dorsally. Pronotum outline hexagonal. Elytra yellowish-brown to brown-black with greenish, bluish, or purplish iridescence. Protibiae without sexual dimorphism, both males and females without laterodorsal row of thick spines. Aedeagus as in Figure 10L–N .

Description: Measurements ♂ [min–max (average); N = 6]: FBL = 3.95–4.21 (4.1); TL = 7.92–8 (7.95); HW = 1–1.11 (1.05); HL = 1.13–1.25 (1.19); HW/HL = 0.83–0.92 (0.88); PW = 1.15–1.24 (1.21); PL = 1.15–1.25 (1.21); PW/ PL = 0.95–1.03 (1); EW = 1.76–1.9 (1.81); EL = 1.67–1.71 (1.69); PW/HW = 1.11–1.21 (1.15).

Measurements ♀ [min–max (average); N = 3]: FBL = 4.47– 4.76 (4.59); TL = 7.32–8.56 (7.76); HW = 1.16–1.21 (1.18); HL = 1.3–1.36 (1.33); HW/HL = 0.87–0.9 (0.89); PW = 1.33–1.5 (1.4); PL = 1.31–1.44 (1.37); PW/PL = 1.01– 1.04 (1.02); EW = 1.98–2.13 (2.06); EL = 1.83–1.96 (1.9); PW/HW = 1.15–1.24 (1.18).

Head and pronotum dark brown to black with metallic blue overtones; antennae, mouthparts, pronotum at margins and legs yellowish-brown; elytra yellowish-brown to brown-black with greenish, bluish, or purplish iridescence, sometimes darker around mesocutellum and at suture; abdominal tergites and sternites brown-black or dark reddish-brown with pale posterior margin.

Head elongate; dorsally and ventrally with iridescence and with micropunctures and microsculpture of transverse isodiametric meshes, without coarse non-setiferous punctures; posterior angles indistinct with moderate setiferous punctures of medium and small-size. Eyes small (EYL/HL = x = 0.44), from 1.18 to 1.46 times as long as temples (in lateral view) in males and 0.84 to 1.04 in females; distance between eyes about 1.13 times as long as length of eye in males and 1.44 times in females. Antennomere 3 moderately longer than antennomere 2; antennomeres 4 to 7 subequal in length; antennomeres 8 to 10 subequal in length; a11 from 1.52 to 1.75 times as long as a 10 in males and from 1.23 to 1.4 in females. Basal and parocular punctures usually double; posterior frontal puncture located anterior to temporal puncture; without small setose punctures between frontoclypeal and anterior frontal punctures; ventral basal ridge more or less straight in checkmark shape, ending distinctly far from gular sutures; postgenal ridge reduced; postmandibular ridge reaching close to eye margin; PMP greatly reduced; nuchal ridge present only laterally, not fused with infraorbital ridge; gula with conspicuous isodiametric microsculpture medially, gular sutures moderately and equally separated in both sexes. Mandibles without dorsolateral groove; labrum with trapezoidal sclerotized region and entire apical margin; mentum with seta alpha only; penultimate labial palpomere only weakly dilated apicad, subequal in width with more or less subconical apical palpomere.

Pronotum about as wide as long, convex, hexagonal, with two PPDS, without APP, without SLSP; flexible postcoxal hypomeral extension (process) not interrupted by inferior line. Elytra evenly punctate, interspaces from about as long as, to two or even up to six times as long as, diameter of punctures. Mesosternum with six macrosetae arranged in a row medially. Metasternum with several macrosetae.

Protibiae not sexually dimorphic, without 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 1–4 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 bilobed.

Abdominal tergites III and IV with only a few rows of coarse, sparse punctures, with large impunctate area; tergite VIII not emarginate medio-apically. Sternite III with basal transverse carina usually evenly converging at an obtuse angle; lateral tergal sclerites IX not dorsoventrally or laterally flaưened. Male sternite VIII with U-shaped emargination medially ( Fig. 14E ); female sternite VIII without emargination; male sternite IX without emargination medially, with rounded apex, its basal portion shorter than distal portion; male tergite X apically subtruncate ( Fig. 12E ); female tergite X with apical margin distinctly subacute to acute ( Fig. 13E ); ovipositor, its second gonocoxite with three macrosetae medially.

Aedeagus as in Figure 10L–N ; its total length 1.25–1.31. Median lobe rod-like, its apex in parameral view slightly V-shaped, emarginate, internal sac with pair of long inverted L-shaped copulatory sclerites. Paramere distinctly produced over apex of median lobe; wider than median lobe; converging to a round apex; with small translucent peg setae; in lateral view almost straight, curved away from median lobe apically.

Distribution and habitat: Loncovilius edwardsianus is known from Chile, from the Araucanía, Aysén, Biobío, Los Lagos, and Los Ríos regions. In addition, it occurs in the westernmost portions of the Chubut and Río Negro provinces of Argentina. Ŋe species occurs from 200 to 1200 m elevation; it is reported from wet sclerophyll and open Nothofagus forests along the Valdivian temperate forest ecoregion. It has been collected by sissing leaf liưer and moss.

Remarks: Loncovilius edwardsianus was described under the preoccupied name Quedius edwardsi based on an unspecified number of syntypes from Casa Pangue in Llanquihue Province in Southern Chile. Korge (1963) replaced the name with Q. edwardsianus and, interestingly, this species was treated in the genus Quedius by Coiffait and Sáiz (1966, 1968) who neither studied the type material nor reported any new material. Presumably, all mentioned authors knew this species only from literature because even Sáiz (1971) did not mention it in the fauna of Chile. Ŋe species was transferred to the genus Loncovilius much later by Newton (2017). To fix the identity of the species, a male from the Bernhauer’s collection at the FMNH, which is clearly a syntype, is here designated as a lectotype of L. edwardsianus .

Figures

Figure 1. Habitats of Loncovilius. A, L. edwardsianus (Korge, 1963) live specimen in the Valdivian Temperate Rainforest in Chiloé, Los Lagos, Chile (Photograph: Matías Gargiulo, through iNaturalist). B, PN Puyehue, Chile, L. lividipennis was collected in mosses on the stones at river banks and under stones in accumulations along banks (photograph: Martin Fikáček). C, L. variabilis sp. nov. found in a flower of the Chiloé archipelago (photograph:Matías Gargiulo, through iNaturalist).

Figure 6. Habitus of Loncovilius species. A, male of L. edwardsianus. B, male of L. cantharoides. C, female of L. semiflavus. D, male of L. barclayi.

Figure 10. Aedeagus of Loncovilius species. A–C, Loncovilius germaini. D–F, L. hammondi. G, H, L. impunctus. I–K, L. variabilis. L–N, L. edwardsianus. O–Q, L. cantharoides. A, D, G, I, L, O, aedeagus dorsally (parameral side). B, E, J, M, P, apical portion of paramere, underside. C, F, H, K, N, Q, aedeagus laterally.

Figure 12. Male tergite X of Loncovilius species. A, L. germaini. B, L. hammondi. C, L. impunctus. D, L. variabilis. E, L. edwardsianus. F,L. cantharoides. G, L. semiflavus. H, L. barclayi. I, L. lividipennis. J, L. carlsbergi.

Figure 13. Female tergite X of Loncovilius species.A, Loncovilius germaini. B, L. hammondi. C, L. impunctus. D, L. variabilis. E, L. edwardsianus. F, L. cantharoides. G, L. semiflavus. H, L. barclayi. I, L. lividipennis. J, L. carlsbergi.

Figure 14. Male sternite VIII of Loncovilius species. A, Loncovilius germaini. B, L. hammondi. C, L. impunctus. D, L. variabilis. E, L. edwardsianus. F,L. cantharoides. G, L. semiflavus. H, L. barclayi. I, L. lividipennis. J, L. carlsbergi.