Scolytoplatypus costatus Gebhardt & Beaver, 2021

Gebhardt, Heiko, Beaver, Roger A. & Allgaier, Christoph, 2021, Three new species of Scolytoplatypus Schaufuss from China, and notes on the movement and functions of the prosternal processes (Coleoptera: Curculionidae: Scolytinae), Zootaxa 5082 (5), pp. 485-493 : 486

Scolytoplatypus costatus Gebhardt & Beaver sp. nov.

Fig. 1A–F , 2A

Type material. Holotype: male: CHINA, Yunnan, Puer, Jingdong, Ailoshan , 24.516N, 101.01E, 2356 m, ALS2200- 4FI, 8.v.2018, L.Z. Meng ( CAS) . Paratypes: as holotype ( CAS, 1f), as previous except, 24.517N, 101.012E, 2377m , FIT, ALS2200-1FI, ( RAB 1m, 1f); as previous except: 24.515N, 101.011E, 2374m , ALS2200-3FI ( RAB 1m); as previous except: 24.532N, 101.015E, 2499m , ALS(S)2400-2FI, ( RAB 2m); as previous except: 24.517N, 101.011E, 2374m , ALS2200-3FI, 28.v.2018 ( NHMUK 1m, 2f; HGT 1 f) .

Diagnosis. The species is distinguished by the lack of a tooth on the upper side of the profemur, and the presence of small spines on the interstriae of the elytral declivity. It resembles S. blandfordi Gebhardt and related species in its elongate body with elytra about 1.7‒2.0 times as long as pronotum, elytral declivity beginning in apical third of elytra, and prosternum raised in a triangle with apex anterior. It can be distinguished from all these species, except S. zahradniki Knížek , by the presence of carinate and spinose interstriae in both sexes, and the female pronotum without a mycangial pore. It is distinguished from S. zahradniki by the male prosternum anteriorly with two processes like long pointed spines with slightly outwardly curved tips ( Fig. 2A ), compared to two curved falcate processes in S. zahradniki ( Fig. 2D ).

Figures

FIGURE 1. Habitus and details of Scolytoplatypus spp. nov.: S. costatus male (2.2‒2.3 mm), habitus dorsal (A), habitus lateral (C), frons anterior (D); S. costatus female (2.3‒2.4 mm), habitus dorsal (B), habitus lateral (E), frons anterior (F); S. geminus male (2.9‒3.3 mm), habitus dorsal (G), pronotum (H), habitus lateral (I), frons anterior (J), pronotum anteroventral with f = fovea (K), declivity (L), prosternum (M); S. peniculatus male (4.7‒4.8 mm), habitus dorsal (N), habitus lateral (P), frons anterior (Q); S. peniculatus female (4.9‒5.3 mm), habitus dorsal (O), habitus lateral (R), frons anterior (S). The bars represent 0.5 mm.

FIGURE 2. Male prosternum of Scolytoplatypus costatus, S. geminus and S. peniculatus in comparison to their close relatives: S. costatus (A), S. geminus (B), S. peniculatus (C), S. zahradniki (D), S. blandfordi (E), S. pubescens (F). The bars represent 0.5 mm.