Uloma, Dejean, 1821

Uloma View in CoL View at ENA bonzica Marseul, 1876

Figs 7, 8 View Figs 5–8 , 13–16 View Figs 13–16 , 20–22 View Figs 17–22

MATERIAL. Russia: Primorsky krai, Chernigovka Distr., Merkushevka village environments, 16– 18.07.2010, 1♂, 2♀, leg. S.N. Ivanov ( PCSI, PCMN) ; same locality, 31.VII 2020, 1♂, 1♀, leg. S.N. Ivanov ( ZIN) ; same locality, 18.VIII 2023, 1♂, leg. S.N. Ivanov ( PCMN) ; 2 km E Merkushevka village , 12.VIII 2024, 1♂, leg. S. N. Ivanov ( PCMN) .

NOTES. The species was known from Japan and Korean Peninsula ( Masumoto & Nisiikawa, 1986; Kim & Kim, 2004; Jung, 2012, etc.) and China, Zhejiang ( Liu & Ren, 2016b). The record from China was omitted in the catalogue ( Iwan et al., 2020). The species U. bonzica is recorded for Russia for the first time.

Adults of U. bonzica were found on linden (Merkushevka village) together with Uloma latimanus Kolbe, 1886 and on a light trap in different localities.

Both sympatric species were collected in slightly different microbiotopes: U. latimanus – under the bark and in the damp rotting wood of the part of the trunk lying on the ground; U. bonzica – on the relatively dry part of the same tree, remaining on the roots and on small fragments scattered nearby.

Aedeagi are similar in both species. Aedeagus of Uloma bonzica ( Figs 20, 21 View Figs 17–22 ) differs from same in U. latimanus ( Figs 17, 18 View Figs 17–22 ) in the slightly narrower and not dorsally depressed parameres in apical half. Spiculum gastrale of Uloma bonzica ( Fig. 19 View Figs 17–22 ) is more different from same in U. latimanus in the presence of lateral process on blades ( Fig. 22 View Figs 17–22 ).

Both species have external sexual dimorphism not only in characters of the pronotum, but also in the shape of the mentum. Females have elevated portion of mentum narrower; the elevation is slightly convex in middle, coarsely sparsely punctured, the lateral elongate impression along elevated portion large and deep ( Figs 11–12 View Figs 9–12 , 15–16 View Figs 13–16 ), while males have the mentum with the wide depression in middle elevation, without puncturation ( Figs 9–10 View Figs 9–12 ) or with very sparse and fine punctures on the lateral sides ( Figs 13–14 View Figs 13–16 ).