Hybreoleptops santiagensis Pérez and Posadas, 2006

Pérez, María Encarnación & Posadas, Paula, 2006, Cladistics and redescription of Hybreoleptops Kuschel (Coleoptera: Curculionidae: Entiminae) with the description of two new species from the Central Chilean subregion, Journal of Natural History 40 (29 - 31), pp. 1775-1791 : 1782-1785

publication ID

https://doi.org/ 10.1080/00222930601046345

persistent identifier

https://treatment.plazi.org/id/039487A1-C37E-AE68-2352-FABEFF58FCF8

treatment provided by

Felipe

scientific name

Hybreoleptops santiagensis Pérez and Posadas
status

sp. nov.

Hybreoleptops santiagensis Pérez and Posadas , sp. n.

( Figures 5 View Figure 5 , 6 View Figure 6 )

Type material

Holotype: female: [Luis E. Pena] [ CHILE / El Coigo / Curico Prov. ] [X-X159] [327-3/det. D.G. Kissinger] [? Hybreoleptops /det. DRWhitehead] [ USNM/2008983 About USNM ] ( USMN).

Type locality

El Coigo, Curicó, Chile.

Etymology

The name refers to species distribution in the Santiago biogeographic province.

Diagnosis

This species is recognized by the following combination of characters: strongly evident, subcircular mandibular scars with a conical protuberance placed at apex of a cylindrical and well-developed pedicel. Dorsal rostrum surface with strong lateral convexities. Scape reaching middle line of eye when resting in scrobe. Prothorax showing anterior impression. Interval 7 protruding at base, resulting in protuberant humeri. Interval 3 with rounded, low, declivital tubercle; this tubercle slightly elongated on anterior–posterior axis, completely covered by white subcircular scales and exhibiting numerous translucid and costate seta-like scales. Ventrite 5 middle area lacking scales (integument exposed); both lateral areas of ventrite 5 completely covered with seta-like scales and setae. Lenticular area of metatibial corbel covered with setae.

Description of holotype

General habitus as in Figure 5 View Figure 5 . Body length 9.8 mm. General body shape ovate. Integument mostly covered by scales; black in exposed areas (e.g. rostrum apex). Body vestiture mainly constituted of subcircular scales, which cover most of the integument; subcircular scales ornamented with longitudinal ribs which are only visible up to ×100, in some areas as ventrite 5 vestiture constituted by white seta-like scales. Dorsal general colour of vestiture mixed, mainly of white scales, alternating with grey scales and sparse black scales. Ventral surface vestiture mainly of white scales. Additionally, tubercle on interval 3, abundant decumbent and translucid seta-like scales, especially at its apex. Base of interval 3, abundant decumbent and translucid seta-like scales. Dorsal surface of rostrum and prothorax, most elytra intervals, femora, and ventrites showing sparse decumbent and translucid seta-like scales. All these seta-like scales ornamented with longitudinal ribs visible up to ×60. Each mandible with a well-developed, subcircular mandibular scar placed at apex of a cylindrical and tall pedicel which exhibits a conical protuberance; pedicel showing several long setae and white seta-like scales on its external side. Mandibular scar differing from all scars on other Hybreoleptops species (placed at apex of a short, cylindrical pedicel and lack conical protuberance). Rostrum 2.1 times longer than wide; dorsal surface convex with central longitudinal sulcus containing a very slightly developed central carina. Suprascrobal sulcus visible at each side of rostrum. Frons slightly convex, elongate fovea. Scrobes incurved, directed downward to lower margin of eyes. As in all species of the genus, distal half of scrobe presenting several scales (subcircular and seta-like). Eyes ovate and flat, with major axis dorso-ventrally orientated. Antennal scape reaching middle line of eye when resting in scrobe. Funicular articles conical; article 2 1.4 times longer than 1; article 3 shorter than 1 but longer than articles 4–7; articles 4–7 subequal in size. Club ovate, short, inflated. Prothorax subquadrangular, 1.25 times longer than its maximum width; presenting anterior impression and longitudinal sulcus; impressions ornating both sides of sulcus. Prothorax base showing a brush of multifid setae. Postocular lobes present. Scutellum rounded and small. Elytra 1.3 times longer than its maximum width; its anterior margin covered with a dense brush of multifid setae. Interval 7 convex at its base, resulting in protuberant humeri. Intervals 3, 5, and 9 strongly convex (specially at apical third of elytra). Interval 7 slightly convex; remaining intervals flat. Declivital tubercle on interval 3 low, rounded, and slightly enlarged following anterior– posterior axis of body. Declivital tubercle completely covered by white subcircular scales and apex presenting numerous, translucid and costate seta-like scales. Declivital area on interval 5 with similar vestiture. Intervals 3 and 9 fused at end resulting in a highly evident and elongated convex rib; this rib, extending diagonally to elytral apex. Elytral apex slightly acuminate, with abundant setae. Ventrites 1–4 completely covered with white subcircular scales, exhibiting sparse translucid seta-like scales and setae. Ventrite 5 with two broad lateral stripes completely covered by white seta-like scales; central area almost black because of the exposure of integument. Venter joints between ventrites 2 and 3, 3 and 4, and 4 and 5 profound and evident. Fore and hind edge of ventrite 1 and fore edge of ventrite 2 with multifid setae, specially abundant in fore edge of ventrite 1 and sparse on hind edge of ventrite 1 and fore edge of ventrite 2. Ventrites 3+4 3.2 times shorter than ventrites 1+2. Apex of tibiae 1 and 2 with comb of enlarged setae, comb continuing around all tibial apices, briefly interrupted on dorsal edge of apex. Tibia 3 with enclosed corbel surrounded by setae, defining an internal and external comb (following nomenclature by Thompson 1992). Lenticular area limited by these combs, flat and extremely setose. All tibiae slightly mucronate (at least in females). Female genitalia as in Figure 6 View Figure 6 .

Distribution

Hybreoleptops santiagensis is known only from its type locality ( Chile, Curicó: El Coigo). This locality is located in the Santiago province which belongs to the Central Chilean subregion (see Figure 1), according to the biogeographic scheme proposed by Morrone (2001) .

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