Basothorhynchus endroedyi, Borovec, 2019

Borovec, Roman, 2019, Basothorhynchus, a new Oosomini genus from the highland plateau of Lesotho (Coleoptera: Curculionidae: Entiminae), Zootaxa 4550 (3), pp. 416-422 : 419-422

Basothorhynchus endroedyi sp. nov.

Type material. Holotype: ♂, ‘ S. Afr., Lesotho, Drakensbg. Black Mt. , 29.31 S – 29.12 E, 9.3.1976; E-Y: 1060, from under stones, leg. Endrödy-Younga’ ( TMSA) . Paratypes: 1 ♂, 3 ♀♀, 7 spec., the same data as holotype (1 ♂ 2 ♀♀, 7 spec. TMSA, 1 ♀ RBSC) .

Description. Body length males 2.31–2.59 mm, females 2.61–2.98 mm, holotype 2.59 mm.

Elytra with sparse regular rows of setae on odd intervals, setae fine, slightly bent backward, about equally long as width of one interval, 8–10 on the length of one interval, at apical part some setae placed also on even intervals. Pronotum, head and rostrum with similar fine setae, half as long as elytral ones and semi-appressed, those setae on pronotum directed transversely, on head with rostrum directed longitudinally.

Rostrum ( Fig. 2 ) 1.09–1.15 × as wide as long, base 1.11–1.15 × wider than apex; rostrum and head moderately shiny, irregularly punctured, distance of punctures smaller than their diameter, basal part of vertex and space behind eyes without punctures, smooth.

Antennal scape ( Fig. 1 ) regularly curved at midlength, evenly enlarged at apical third, at apex 0.7–0.8 × as wide as club. Funicle segment 1 conical, 2.1–2.2 × as long as wide and 2.2–2.5 × as long as segment 2, which is 1.2–1.3 × as long as wide; segment 3 isodiametric; segment 4 1.1 × as wide as long; segment 5 1.2 × as wide as long; segment 6 1.3 × as wide as long; segment 7 1.4–1.5 × as wide as long; club 1.5 × as long as wide.

Pronotum ( Fig. 1 ) 1.07–1.11 × as wide as long, widest at midlength or before midlength, with strongly regularly rounded sides, anterior border narrower than posterior border. Disc strongly shiny, punctured, smooth between punctures; punctation variable, punctures ranging from very small, fine and deeper with long interspaces (longer than puncture diameter) to larger, shallower and with interspaces shorter than puncture diameter. Punctures on disc mostly variably-sized.

Elytra ( Fig. 1 ) in males 1.48–1.53 ×, in females 1.34–1.43 × as long as wide. Striae constituted by slender punctures, space between punctures not deepened; intervals matt, rough.

Protarsi in both sexes shorter and broader than meso- and metatarsi; all tarsi in males shorter and more robust than those in females. Male protarsi with segment 2 twice as wide as long; segment 3 1.2–1.3 × as wide as long and onychium equally long as segment 3; meso- and metatarsi with segment 2 1.7–1.8 × as wide as long; segment 3 1.3 × as wide as long and onychium 1.3 × as long as segment 3. Female protarsi with segment 2 1.7–1.8 × as wide as long; segment 3 1.3 × as wide as long and onychium 1.3 × as long as segment 3; meso- and metatarsi with segment 2 1.5–1.6 × as wide as long; segment 3 1.1–1.2 × as wide as long and onychium 1.4 × as long as segment 3.

Penis ( Fig. 7 ) dorsally widest at apical third, basally evenly tapered with sides basally straight; apically tapered distinctly with sides of apical part rounded, tip small, subtriangular; in profile slender, distinctly irregularly curved, tip elongated, evenly pointed.

Spermatheca ( Fig. 11 ) with cornu wide, robust, regularly curved; ramus perpendicular to body of spermatheca, globular, isodiametric; collum not differentiated; tip of spermatheca truncated.

Etymology. The newly described species is named in memory of the late Sebastian Endrödy-Younga (1934– 1999), (Sebestyén Endrődy in his original name and surname), an originally Hungarian coleopterist who spent the majority of his life in South Africa and who collected important and extensive material of different Coleoptera in South Africa, and also from less visited parts, like the high altitude areas of Lesotho. Material collected by him constitutes a major foundation for our knowledge of the mainly terricolous beetles of South Africa.

Figures

FIGURE 1. Dorsal habitus of the male holotype of Basothorhynchus endroedyi sp. n.

FIGURES 2–11. Structural details of Basothorhynchus endroedyi sp. n. 2. head with rostrum, dorsal view; 3. head with rostrum, lateral view; 4. tergite VII and VIII in male; 5. femur and tibia of anterior right leg; 6. abdominal ventrites of female; 7. penis, dorsal and lateral view; 8. tegmen, dorsal view; 9. Sternite VIII of female, dorsal view; 10. ovipositor, dorsal view; 11. spermatheca. Scale bars: 1 mm (6), 0.5 mm (2–5, 7–11).