Smicronyx drakensbergensis, Haran, Julien M., 2021

Haran, Julien M., 2021, The Smicronychini of southern Africa (Coleoptera, Curculionidae): Review of the tribe and description of 12 new species, European Journal of Taxonomy 735, pp. 34-73 : 62-63

Smicronyx drakensbergensis sp. nov.

urn:lsid:zoobank.org:act:0E52BFCE-0C56-411D-A089-EA48704B33C2

Figs 2D , 4E , 5M ; Table 1

Differential diagnosis

Smicronyx drakensbergensis sp. nov. belongs to the species group of S. reichi and is morphologically closest to S. san sp. nov. in southern Africa. See diagnosis and remark sections under that species for diagnostic traits.

Etymology

This species is named in reference to the mountain range where the type series was collected.

Material examined

Holotype REPUBLIC OF SOUTH AFRICA • 1 ♂; “S. Afr.; Drakensberg [KwaZulu-Natal Province]; Cathedral PkRainbowG [gorges]; 28.57S 29.14E ” / “ 17.i.1997; E-Y; 3257; grassnetting; leg. Endrödy-Younga ” / “HOLOTYPE; Smicronyx drakensbergensis ; Haran 2021”; TMSA.

Paratype REPUBLIC OF SOUTH AFRICA • 1 ♂; same collection data as for holotype; SAMC .

Description (♂)

BODY LENGTH. 2.0– 2.2 mm.

COLOUR. Body integument entirely black, shiny; vestiture of elytra consisting of recumbent, elliptical or rounded, brownish and whitish, overlapping scales, densely covering but not concealing the integument.

HEAD. Rostrum as long as head + prothorax in lateral view, moderately and regularly downcurved ( Fig. 3E ), in dorsal view punctate, covered with suberect whitish scales in basal ½, glabrous in apical ½; transverse furrow at base of rostrum shiny, bare of scales, with two spots of white erect scales on each side near eyes; head capsule glabrous; eyes flat, close to each other on ventral side, separated by width of 2–3 ommatidia; scape of antennae straight, slightly and regularly widening toward apex, clavate in apical ⅓, segment 1 of funicle elongate, slightly longer than 2 + 3, 4–7 wider than long.

PROTHORAX. Wider than long (ratio w/l: 1.07), widest before middle of length, narrowed at apex, sides moderately rounded; integument greatly punctuate and granulous, shiny; scales greyish, overlapping, not concealing integument.

ELYTRA. Sides rounded, widest near middle of length (ratio w/l: 0.73); humeri raised; striae narrow, ½–⅓ as wide as interstriae, interstriae flat, wide, integument shiny, slightly reticulate, apex of interstria 5 with very small declivital callosity; scutellum small, not visible through coating.

ABDOMEN. Underside mostly covered with overlapping greyish scales, more condensed on metasternum and metanepisterna.

LEGS. Covered with pale brown and greyish semi-erect, elongate scales; femora clavate, bearing a tiny ventral tooth usually concealed by scales; tibiae straight on external side, slightly bisinuate ventrally at basal third; claws equal in length.

GENITALIA. Body of penis short (ratio w/l: 0.80), 2.2× shorter than apodemes, sides sub-parallel, apex acuminate, curvature in lateral view regular ( Fig. 5M ). Female unknown.

Life history

Host plant unknown. Adults were collected in January.

Distribution

Republic of South Africa (KwaZulu-Natal Province).

Figures

Fig. 2. Habitus of species of Smicronychini from southern Africa (Part 2). A. Smicronyx san sp. nov., ♂, holotype (SAMC), bred from Chironia baccifera L. B. S. san sp. nov., ♂, paratype (CBGP), specimen bred from Orphium frutescens L. (E. Mey). C. S. san sp. nov., ♂, paratype (CBGP), specimen bred from Sebaea Sol. ex R.Br. sp. D. Smicronyx drakensbergensis sp. nov., ♂, holotype (TMSA). E. Smicronyx zonatus Haran, 2018, ♂, paratype (CBGP), specimen from the Western Cape Province of the Republic of South Africa.F. Smicronyx lutulentus Dietz, 1894, ♂ (CBGP). G. Smicronyx albosquamosus Wollaston, 1854, ♂ (CBGP), specimen from Israel. H. Smicronyx namibicus Haran, 2018, ♂ (MNHN), specimen from Tanzania. Scale bars: 1 mm.

Fig. 4. Head and prothorax in lateral view of species of Smicronyx from southern Africa (Part 2). A. Smicronyx paucisquamis sp. nov., ♂, holotype (SAMC). B. Smicronyx fallax (Gyllenhal, 1836), ♂, neotype (NHRS). C. Smicronyx australis sp. nov., ♂, holotype (SAMC). D. Smicronyx san sp. nov., ♂, bred from Chironia baccifera L., holotype (SAMC). E. Smicronyx drakensbergensis sp. nov., ♂, holotype (TMSA). F. Smicronyx lutulentus Dietz, 1894, ♂ (CBGP). Scale bars: 0.5 mm.

Fig. 5 (opposite page). Penis of Smicronyx from southern Africa, in dorsal (left) and lateral (right) view. A. Sharpia madibai sp. nov., ♂, holotype (SAMC). B. Afrosmicronyx cycnii sp. nov., ♂, holotype (SAMC). C. Afrosmicronyx louwi sp. nov., ♂, holotype (SAMC). D. Afrosmicronyx marshalli sp. nov., ♂, holotype (SANC). E. Afrosmicronyx nebulosipennis sp. nov., ♂, holotype (BMNH). F. Smicronyx similis sp. nov., ♂, holotype (SANC). G. Smicronyx pseudocoecus sp. nov., ♂, holotype (SAMC). H. Smicronyx paucisquamis sp. nov., ♂, holotype (SAMC). I. Smicronyx fallax (Gyllenhal, 1836), ♂, neotype (NHRS). J. Smicronyx australis sp. nov., ♂, holotype (SAMC). K. Smicronyx pauperculus Wollaston, 1864, ♂, specimen from Tanzania. L. Smicronyx san sp. nov., ♂, holotype (SAMC), bred from Chironia baccifera L. M. Smicronyx drakensbergensis sp. nov., ♂, holotype (TMSA). N. Smicronyx zonatus Haran, 2018, ♂, paratype (CBGP), specimen from the Western Cape Province of the Republic of South Africa. O. Smicronyx lutulentus Dietz, 1894, ♂ (CBGP). P. Smicronyx namibicus Haran, 2018, ♂, holotype (MNHN), specimen from Tanzania. Scale bars: 100 μm.

Fig. 3. Head and prothorax in lateral view of species of Smicronyx from southern Africa (Part 1). A. Sharpia madibai sp. nov., ♂, holotype (SAMC). B. Afrosmicronyx cycnii sp. nov., ♂, holotype (SAMC). C. Afrosmicronyx louwi sp. nov., ♂, holotype (SAMC). D. Afrosmicronyx marshalli sp. nov., ♂, holotype (SANC). E. Afrosmicronyx nebulosipennis, sp. nov., ♂, holotype (BMNH). F. Smicronyx gracilipes sp. nov., ♀, holotype (SAMC). G. Smicronyx similis sp. nov., ♂, holotype (SANC). H. Smicronyx pseudocoecus sp. nov., ♂, holotype (SAMC). Scale bars: 0.5 mm.