Brachysomus (Hippomias) assingi Yunakov, 2006

Yunakov, Nikolai, 2022, A review of the genus Brachysomus Schoenherr (Coleoptera: Curculionidae: Entiminae), Zootaxa 5193 (1), pp. 1-165 : 54-55

Brachysomus (Hippomias) assingi Yunakov, 2006

Figs. 53 , 88 , 110 , 127, 128 , 208 , 239B

Brachysomus assingi Yunakov, 2006: 304 . Type locality: Turkey, Nur Daðlarý.

Redescription. Measurements: Body length 1.80–2.05 mm, width 1.10–1.25 mm (in holotype 2.00 and 1.20 mm).

Vestiture: Elytra brown, maculate, very densely covered with grey-brown, round, slightly dentate at apical margin, recumbent scales. Pronotum and head densely covered with apically strongly excised scales. Erect setae uniform in length across surface of elytra; on pronotum, erect setae weakly visible, as long as 2/3 width of elytral interstriae. External side of femora and protibiae densely covered with round scales, internal side of tibiae with thin pale hairs. Ventrites covered with thin hairs and piliform scales. Colouration: Body dark-brown, legs and antennae slightly pale-brown.

Head: Rostrum weakly, conically narrowing from base to middle, as long as wide (RL/RW = 1.00–1.09). Pterygia clearly visible in dorsal view, noticeably projecting from outline of rostrum. Epifrons weakly convex longitudinally, separated from vertex by slight transverse depression, with noticeable median longitudinal sulcus. Eyes small, in males larger than in females (VW/ELD in males = 1.36–2.10; in females = 2.50–2.75), moderately convex, situated below vertex level. Vertex flat, distinctly, finely, and longitudinally punctate under scales. Antennae: Scape weakly curved at basal 1/3, evenly widened distally. Funicle noticeably widened distally; funicular antennomeres: 1st and 2nd elongate, 3rd–7th funicular transverse; club egg-shaped.

Thorax: Pronotum slightly transverse [PL/PW = 0.77–0.83 (0.80)], widest at middle, evenly convex at sides, slightly constricted anteriorly and posteriorly. Disc slightly convex, finely, densely, and shallowly punctate. Elytra: broadly-oval (EL/EW = 1.04–1.22), weakly and evenly convex at sides and disc in male, and moderately convex at disc and basal 1/3 of sides in female. Striae linear. Punctures deep, narrowly separated; spaces between punctures somewhat narrower than diameter of puncture, situated at interstrial level. Interstriae moderately convex or flat, shiny, 2x wider than striae. Legs short. Femora moderately swollen in middle part. Tibiae straight, with slightly sinuate medial margin. Protibiae usually not widened at apex. Male metatibiae weakly mucronate. First tarsomere triangular, 2nd tarsomere weakly transverse. Fifth fore tarsomere extending beyond apical lobes of 3rd by length of the lobes.

Abdomen: Male 5th ventrite without depression at apical part; apical margin straight, in females rounded. Male genitalia: Aedeagus heavily sclerotized, median lobe parallel-sided, short, 2x shorter than apodemes. Spermatheca with very long ramus, collum rounded.

Diagnosis. The species is very similar to B. commutatus , differs by weakly convex eyes, 1st and 2nd funicular antennomeres strongly elongate, head capsule weakly narrowed apically, strongly excised scales on head and pronotum, brown maculate elytra, structure of aedeagus and spermatheca.

Distribution. Southern Turkey (Antakya). Bionomics. This species inhabits leaf litter in mountain deciduous forests at around 1000 m a.s.l. Type material. TURKEY: Holotype ♂ (SDEI): ‘Turkey, Antakya, Nur Dagl., WSW Yesilkent, 990 m, 36°54′58″N, 36°18′54″E, mixed deciduous forest, № 14, 28 XII 2000, V. Assing’. Paratypes, 3♂, 3♀ (DEI, ZIN): as holotype.

Figures

FIGURE 208. Brachysomus assingi: A: aedeagus; B: endophallic sclerite; C: tegmen; D: spermatheca; E: head; F: antenna; G: scales of elytra.

FIGURE 239. Occurrence map of Brachysomus: A: Brachysomus s. str.; B: subgenus Hippomias.

FIGURES 51–56. Brachysomus, dorsal habitus: 51: B. oertzeni (lectotype) 52: B. moczarskii, female. 53: B. assingi, 54: B. moczarskii, male, 55: B. curvimanus. 56: B. fallax.

FIGURES 87–94. Brachysomus, details: 87, 88: B. echinatus. 89, 90: B. ornatus. 91, 92: B. strawinskii. 93, 94: B. fremuthi.

FIGURES 106–111. Brachysomus, details: 106: B. moczarskii, head dorsal view, 107: B. moczarskii, head lateral view. 108: B. oertzeni, head dorsal view. 109: B. oertzeni, head lateral view. 110. B. assingi, head dorsal view. 111: B. verae, head dorsal view.

FIGURES 124–130. Brachysomus, details: 124: B. albanicus, head dorsal view. 125: B. albanicus, head lateral view 126: B. simulans head dorsal view. 127: B. simulans, head lateral view. 128: B. rhinomioides, head dorsal view. 129: B. rhinomioides, head lateral view.