Bembidion (Peryphus) psuchrum Andrewes, 1922

Neri, Paolo & Toledano, Luca, 2021, Geographic and taxonomic notes, addenda and corrigenda on the subtribe Bembidiina Stephens, 1827 of the 2017 ' Catalogue of Palaearctic Coleoptera' (Coleoptera, Carabidae, Bembidiina), ZooKeys 1044, pp. 563-587 : 563

Bembidion (Peryphus) psuchrum Andrewes, 1922 comb. nov. Figures 3 , 8

Bembidion (incertae sedis) Bembidion psuchrum Andrewes, 1922

Examined material.

1 ♂, holotype of Bembidium psuchrum Andrewes, " ♂ 1995 [no. dissection by Müller-Motzfeld] // Holo / type [round, bordered in red] // Type [round, bordered in red] // Bembidium / psuchrum Andr. / Type [handwritten] / H. E. Andrewes det. [printed] // Brit. Mus. / 1923-24 // Bunderdhunga V. / W. Almora Divis. / 8000-12000 feet / June’ 19 H.G.C. [printed] // 3120 [printed]" (NHMUK) ; 1 ♂, " Inde / Himachal Pradesh / Mahari // 3500m / 18.VIII.80 / G. Ledoux " (CTVR) (Fig. 3 ) .

Note.

The holotype is in perfect condition and the slide with the aedeagus, on a label mounted on the same pin as the specimen, is clear and well preserved.

Type locality.

Kumaon, West Almora, Bunderdhunga, 8000-12000 ft. [India, Uttarakhand] ( Andrewes 1922).

Redescription of the holotype.

Total body length 3.90 mm. Coloration: head, pronotum and elytra black, metallic. Palps dark brown with last palpomere light. Legs with femora black metallic and apex slightly lighter, tibiae reddish and tarsi reddish with blackish metallic reflections. Antennae reddish black with metallic reflections. Head: maximum width, including eyes, 0.82 mm; interocular distance 0.55 mm; frons and clypeus smooth with a few transverse lines, neck microsculptured at base; evident, smooth, deep frontal furrows, ending behind at the second supraorbital seta. Eyes moderately convex, temples slightly convex and oblique towards neck. Antennae long 2.05 mm. Pronotum: length along mid line 0.84 mm; width of anterior margin 0.77 mm, maximum width 0.93 mm, width of base 0.61 mm; pronotal width/pronotal length ratio 1.11; very convex, barely transverse; sides entirely rebordered, narrowing with an evident sinuous curve towards the base with which they form a slightly acute corner; marginal gutter very narrow, of homogeneous width; whole surface glossy, laterobasal carina not very evident; median line evident, slightly widened at base; transverse anterior semilunar impression with a few punctures; basal transverse impression punctured between the subquadrate, not deep, basal foveae. Elytra: length 2.37 mm, maximum overall elytral width, slightly beyond the middle, 1.59 mm; oval, moderately convex, evident and rounded shoulders; humeral margin reaching stria 5; totally glossy, faint trace of microsculpture only at the extreme apex. Striae with evident punctation, mainly on disc, barely visible at apex; the very faint punctation is visible also at apex. Evident apical stria.

Male genitalia.

Medium sized (0.91 mm) aedeagus (Fig. 8 ), concave ventral margin with apex bent ventrally; central brush completely inside the median lobe, medium sized main sclerite, moderately wide and sinuate.

Conclusion.

The study of the holotype of the species, currently listed as Bembidion "incertae sedis" ( Marggi et al. 2017), suggests that the species could be assigned to the subgenus Bembidion Peryphus Dejean, 1821.

Figures

Figures 1 - 4. Habitus of 1 Bembidion (Peryphanes) sanatum Bates, 1883, holotype (NHMUK), 5.60 mm 2 B. (Plataphus) pseudolucillum Netolitzky, 1938 from Kibune, Kyoto (NHMW), 4.20 mm 3 B. (Peryphus) psuchrum Andrewes, 1935 Inde, Himachal Pradesh, Mahari, 3500 m (CTVR), 3.50 mm 4 labels of the holotype of Bembidion sapporense Jedlicka (NMPC). Photographs: Luca Toledano.

Figures 5 - 9. Median lobe of the aedeagi of 5 Bembidion (Peryphanes) sanatum Bates, 1883, holotype (NHMUK), 1.55 mm 6 B. (P.) dostali Kirschenhofer, 1984, paratype (NHMW), 1.53 mm 7 B. (P.) lulinense Habu, 1973 (drawing from Habu 1973), 1.41 mm 8 Bembidion (Peryphus) psuchrum Andrewes, 1935, holotype (NHMUK), 0.91 mm 9 Bembidion (Plataphus) pseudolucillum Netolitzky, paratype (NHMW), 0.80 mm.