Brachysomus (Brachysomus) mihoki Pen., Penecke 1914
Creators: name: Yunakov, Nikolai
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy

description: Brachysomus (Brachysomus) mihoki Penecke, 1914   
Figs. 9, 22–24, 95–99, 202, 235B  
 Brachysomus mihoki Penecke, 1914: 36. Type locality: Hungary, Huszárok; Košťál 1991b: 79.   
  Redescription. Measurements : Body length 2.55–4.50 mm, width 1.50–2.50 mm. Vestiture: Head and body densely covered with recumbent, piliform, dark and light scales, and slender, acute, dark-brown, erect setae. Apical 1/3 of epifrons almost bare, basal 1/3 densely covered with piliform scales and slender, erect setae. Dark-brown recumbent scales forming spotted pattern along elytra. Setae longer than width of elytral interstriae. Legs evenly and densely covered with light scales. Ventral side of body evenly and sparsely covered with pale hairs and piliform scales. Colouration: Body, legs and antennae brown.   
 Head: Rostrum elongate, parallel-sided (RL/RW = 1.28), outline in line with temples. Antennal sockets partly visible in dorslal view, hidden by lateral margins of epifrons. Pterygia weakly projecting from outline of rostrum. Antennal scrobes sharply developed and deep, directed to ventral margin of eye, reaching ventral side of rostrum. Epistome flat, delimited from epifrons by thin V-shaped carina.Epifrons parallel-sided, weakly convex longitudinally, without carina, with deep median longitudinal sulcus, densely punctate, separated from vertex by shallow, weakly visible depression. Vertex flat, finely longitudinally punctate, as wide as epifrons at level of antennal insertion. Eyes oval (VW/ELD = 1.40–1.75), weakly convex, highest at middle, dorsal margin situated near level of vertex in lateral view. Antennae: Scape gently curved, strongly widened along distal 1/3; funicular antennomeres: 1st (L/W=2.2) and 2nd (L/W=1.7) elongate, 3rd–7th moniliform; club widely spindle-shaped.   
 Thorax: Pronotum transverse [PL/PW = male: 0.71–0.72 (0.72); female: 0.72–0.76 (0.74)], widest at middle, strongly evenly convex at disc and sides, strongly constricted anteriorly and gently posteriorly, densely, shallowly punctate, spaces between punctures 0.5x as wide as diameter of puncture, disc without lateral depressions. Elytra: broadly-oval to globose, at disc strongly convex. Interstriae flat, glabrous, 2x wider than striae. Punctures well separated. Spaces between punctures very weakly concave, as long as diameter of puncture. Legs: Fore tibiae straight, with apical external angle, in males not protruding, in females weakly spade-shaped. Hind tibiae with sparse grooming brush, weakly mucronate. Fifth fore tarsomere extending beyond apical lobes of 3rd by 0.70 length of the lobes.   
 Abdomen: First ventrite with posterior margin weakly sinuate. Male 5th ventrite flat, without depression, with apical margin truncate. Male abdominal sternite IX membranous. Pygidium coarsely punctate. Male genitalia: Aedeagus heavily sclerotized through entire length; median lobe 0.6x as long as apodemes, parallel-sided, apex sharply attenute. Endophallus densely covered with microscopic spiculae. Endophallic sclerite large, needle-shaped, with lobe at base. Parameres connate at basal half. Spermatheca with short collum and ramus.   
 Diagnosis. Brachysomus mihoki is quite morphologically distinct from other known species and can be easily distinguished by its large body size (length 2.55–4.25 mm), dense piliform scales forming distinct spots on elytra, dark, erect, very long setae at the elytral interstriae, epistome in male bearing a thorn-shaped process in the lateroapical angles. In general appearance, B. mihoki is similar to Mylacomorphus macedonicus F. Solari, 1948 (Figs. 172–176).   
 Distribution. Endemic to Bakony Hills (Hungary).   
 Bionomics. Unknown.   
 Type material. Lectotype, ♂ (MTD), ‘Ung. Veszprém, Huszárok’, ‘ Brachysomus mihoki Pen., Penecke det.’, ‘Cotypus [red, handwritten]’, ‘Lectotypus, Brachysomus mihoki Pen. Košťál design. 1987 [red, handwritten]’. Paralectotypes 2♂, 1♀ (MTD), labeled as lectotype.   
 Additional material examined. HUNGARY: Veszprém, Bakony Mountain Range: 1♂, 1♀, ‘Hungaria, Veszprém m., Magas-Bakony, Kőris-hegy, 11.vi.1995, A. Podlussány’ (HNHM); 1♂, ‘Géza-háza, Ördög-árok, Bakony hegység, 11.v.1983, A. Podlussány’ (HNHM); 1♀, ‘Csesznek, Ördög-árok, Bakony hegység, 11.v.1983, A. Podlussány’ (HNHM); 1♀, ‘Bakony, Dr. Lanci’ (HNHM); 1♀, ‘Bakonyb[él]’ (HNHM); 1♂, ‘Zircz, Hungaria, leg. Kaszab’ (HNHM); 2♀, ‘Szücs [= Bakonyszücs]’ (HNHM).   
Doubtfulmaterial. Pest: 1♂, ‘Budapest, Hungaria, leg. Kaszab’ (HNHM).
description: Published as part of Yunakov, Nikolai, 2022, A review of the genus Brachysomus Schoenherr (Coleoptera: Curculionidae: Entiminae), pp. 1-165 in Zootaxa 5193 (1) on pages 47-48, DOI: 10.11646/zootaxa.5193.1.1, http://zenodo.org/record/7144389