HYLASTINI, LeConte, 1876

Mandelshtam, M. Yu. & Petrov, A. V., 2019, A key to species of the tribe Hylastini LeConte, 1876 (Coleoptera: Curculionidae: Scolytinae) from Russia and adjacent countries, Russian Entomological Journal 28 (4), pp. 389-399 : 390

KEY TO THE RUSSIAN GENERA IN THE HYLASTINI :

1. Third tarsal segment emarginate, narrow, 1.0–1.1x as wide as the second segment ( Fig. 13 ); pronotum without noticeable constriction in the anterior third of its length or this constriction is only poorly developed, sides of pronotum usually parallel for most of its length, form of pronotum elongate-oval when viewed from above ( Figs 17–18 ); pronotum more elongated, averaging 1.2x longer than wide; pronotal disc lacking or with fewer small than large punctures ( Figs 9–11 ) ............ Hylastes Erichson, 1836

— Third tarsal segment bilobed, broad, 1.3–1.7x as wide as the second segment ( Fig. 14 ); pronotum with conspicuous constriction on anterior third, strongly narrowing anteriorly, nearly triangular when viewed from above, broad ( Fig. 19 ), 0.9–1.1 times as long as wide; pronotal disc usually with about equal number of smaller and larger punctures ............................. Hylurgops LeConte, 1876

Figures

Figs 12–20. Habitus and details of bark beetles of the genus Hylastes and Hylurgops:12, 15, 17 — Hylastes substriatus; 13 — Hylastes ater; 14 — Hylurgops palliatus; 16 — Hylastes attenuatus; 18 — Hylastes cunucularius;19–20 — Hylurgops glabratus; 12 — protibia and tarsus; 13–14 — tarsi; 15–16 — head; 17–19 — pronotum; 20 — habitus, dorsal view. Рис. 12–20. Габитус и детали строениЯ короедов родов Hylastes и Hylurgops: 12, 15, 17 — Hylastes substriatus; 13 — Hylastes ater; 14 — Hylurgops palliatus; 16 — Hylastes attenuatus; 18 — Hylastes cunucularius; 19–20 — Hylurgops glabratus; 12 — переднЯЯ голень и лапка; 13–14 — лапки; 15–16 — голова; 17–19 — переднеспинка; 20 — габитус, сверху.

Figs 7–11. Details of bark beetles from genera Hylastes and Hylurgops: 7, 9 — Hylastes ater; 8 — Hylurgops palliatus;10 — Hylastes brunneus; 11 — Hylastes cunicularius; 7–8 — proventriculus; 9–11 — punctures of pronotal disc; 7–8 — photographs by Kirill V. Makarov. Рис. 7–11. Детали строениЯ короедов родов Hylastes и Hylurgops: 7, 9 — Hylastes ater; 8 — Hylurgops palliatus; 10 — Hylastes brunneus; 11 — Hylastes cunicularius; 7–8 — провентрикулюс; 9–11 — пунктировка переднеспинки; 7–8 — фотографии К.В. Макарова.