Leschenius, RUGICOLLIS (VOSS, 1954)

Río, María Guadalupe Del, Malvardi, Adriana Elena & Lanteri, Analia, 2012, Systematics and cladistics of a new Naupactini genus (Coleoptera: Curculionidae: Entiminae) from the Andes of Colombia and Ecuador, Zoological Journal of the Linnean Society 166 (1), pp. 54-71 : 66-67

publication ID	https://doi.org/ 10.1111/j.1096-3642.2012.00833.x
DOI	https://doi.org/10.5281/zenodo.10529939
persistent identifier	https://treatment.plazi.org/id/C31D0351-FFCF-FFE1-FF63-FEB4FD22FD4A
treatment provided by	Carolina
scientific name	Leschenius
status

Treatment

LESCHENIUS RUGICOLLIS (VOSS, 1954) View in CoL COMB. NOV.

( FIGS 4–5 View Figures 1–6 , 17–18 View Figures 13–24 , 29–30 View Figures 25–36 , 39 View Figures 37–42 , 43–44, 51)

Asymmathetes rugicollis Voss, 1954: 210 View in CoL .

Redescription: Female. Species medium-sized (LB, 9.3 mm) ( Fig. 4 View Figures 1–6 ). Tegument visible, reddish brown, shiny. Vestiture composed of scattered setae, whitish on head, legs, and venter, ocher on pronotum and elytra; setae on sides of pronotum, and margins and posterior third of elytra denser than on anterior two-thirds of disc; elytra with suberect setae and minute, decumbent, seta-like scales. Rostrum short ( Fig. 4 View Figures 1–6 ) (LR/WRa, 1), sides slightly convergent towards apex (WRb/WRa, 1.38), dorsum flat, strigose with longitudinal wide striae; median groove narrow, slightly exceeding posterior margin of eyes. Epistome slightly depressed. Eyes large and strongly convex. Frons strigose with longitudinal wide striae. Vertex foveolate–strigose with oblique striae. Antennae ( Fig. 17 View Figures 13–24 ) (LB/LA, 2.44) with scarse pilosity; scape reaching posterior margin of eyes. Funicular article 2 about 1.33¥ as long as article 1; funicular article 3, 2¥ longer than wide and funicles 4–7 slightly longer than wide; club slightly fusiform (LC/WC, 2.44).

Pronotum ( Fig. 4 View Figures 1–6 ) slightly conical, slightly wider than long (WP/LP, 1.21); flanks slightly curved; disc densely foveolate on centre and granulose on sides, or completely densely granulose; median groove shallow or absent; anterior margin slightly curved anteriad, slightly thickened; base posteriorly ‘V’– shaped. S cutellum large.

Elytra ( Fig. 4 View Figures 1–6 ) short (LE/WE, 1.37), with maximum width at middle, moderately convex; base strongly curved backwards on middle; striae with large oval punctures, striae 9–10 closer on posterior two-thirds; intervals rugose–granulose, slightly convex to flat, as wide as striae to slightly narrower; apex acute, slightly divided, and projected.

Legs. Procoxae almost reaching anterior margin of prosternum; protibiae with row of between seven and nine acute small denticles and large hook-like mucro; mesotibiae with small denticles and small mucro, and metatibiae without denticles and mucro; metatibial apex with broad corbel covered with setae; apical and dorsal comb subequal.

Abdomen ( Fig. 18 View Figures 13–24 ). Intercoxal portion of ventrite 1 broader than metacoxal cavities (1.5¥); ventrite 2 longer than ventrites 3 and 4 combined (1.31¥); posterior margin of ventrite 5 slightly pointed; tergites I– VII slightly sclerotized.

Terminalia . Sternite VIII ( Fig. 29 View Figures 25–36 ) with plate subrhomboidal, not elongate, having apical tuft of long setae and shorter setae in apical margin; ‘V’–shaped sclerotization with wide lateral arms reaching half of plate, and median line membranose; apodeme about 2¥ longer than plate. Ovipositor ( Fig. 30 View Figures 25–36 ) shorter than ventrites 1–5 (0.72¥); without setae on sides of baculi; ventral baculi slightly divergent towards base; styli thin, directed laterally. Spermathecal body ( Fig. 39 View Figures 37–42 ) subcylindrical, long; nodulus conical, short; ramus indistinct; cornu very long; spermathecal duct ( Fig. 39 View Figures 37–42 ) medium-sized, as long as half ovipositor (~ 1.5 mm) membranous and wide.

Male ( Fig. 5 View Figures 1–6 ). Smaller (8.3–8.7 mm) and more slender than female; rostrum slightly longer and less conical (L/W, 1.07–1.15; Wb/Wa, 1.23–1.32); antenna longer (LB/LA, 2.29–2.30), club slightly more elongate (L/W, 2.44–2.61); postocular constriction slight; pronotum (W/L, 1.09–1.22; LE/LP, 2–2.18) with base slightly bisinuate and posterolateral angles slightly projected backwards; scutellum smaller; elytra more slender (L/W, 1.52), with thickened base, curved, and angles projected anteriad, shoulders reduced; mesotibiae without denticles; metatibiae with medium-sized mucro; and posterior margin of ventrite 5 bilobed.

Genitalia (Figs 43–44). Median lobe with rounded apex, in the same line with its apodemes; median lobe plus apodemes shorter than abdomen (0.88¥); apodemes shorter than remaining part of median lobe (0.70); endophallus with two wing-shaped sclerites.

Comparative notes and diagnosis

Leschenius rugicollis comb. nov. is most closely related to the pair L. bifurcatus sp. nov. – L. manueli sp. nov. (see cladogram; Figure 52 View Figure 52 ), based on similar head sculpture, frons (strigose), and pronotum (foveolate–granulose), eyes strongly convex, spermathecal body subcylindrical and short, and apex of the median lobe evenly rounded.

Leschenius rugicollis comb. nov. resembles L. manueli sp. nov., based on the large scutellum, maximum elytral width at middle, elytral apex slightly divided, and metatibiae with subequal apical and dorsal combs and narrow corbel, and with a small mucro in males. It differs from L. manueli sp. nov. by the pronotum of males wider than long, with slightly bisinuate base, male elytral base curved back in a ‘V’, striae 9 and 10 approximate on posterior two-thirds, and the ovipositor without setae on sides of baculi.

Type material

The type material of Asymmathetes rugicollis Voss, 1954 was deposited at the Museum of Hamburg , in the author’s collection, which was destroyed during World War II ( Weidner, 1979), years before the publication of Voss’s paper .

We studied specimens from the Kuschel collection, held at the NZAC (included in the list of material examined), identified by the specialist G. Kuschel. The characters of the specimens match those of the original description, except for the slightly smaller size of the type specimens (6.5–7 mm).

For the reasons expressed above, and with the reported destruction of the type series, we decided to designate a neotype, following the conditions established in the International Code of Zoological Nomenclature (ICZN), Article 75.3. Neotype. Female, 9.3 mm long, ‘ Loja, Abbé Gaujon col., Asymmathetes rugicollis Voss Det. G. Kuschel 1985 ’ ( NZAC).

Other material examined

ECUADOR. Loja: Loja, Abbé Gaujon col., Asymmathetes rugicollis Voss Det. G. Kuschel 1985 (2♀♀ 2♂♂ NZAC) .

Distribution: Ecuador (Loja), about 2100 m a.s.l.