Aconias albitarsis Watanabe, Kyohei, 2025

Key to Japanese species of Aconias View in CoL View at ENA

1. Female.

................................................................................................ 2 -. Male.

................................................................................................ 5 2. Hind femur coriaceous; punctures unclearly defined ( Fig. 77D). Hind femur and tibia without long setae ( Fig. 77D). Scutellum entirely black.

................................................................................................ 3 -. Hind femur punctate; punctures well-defined ( Figs. 3H, 4H, 77E, F). Hind femur and tibia with many long setae ( Figs. 77E, F). Scutellum with reddish-brown to yellow area ( Figs. 3B, G, 4B, F).

................................................................................................ 4 3. Hind tarsus without white area (sometimes tinged with dark yellowish-brown at base) ( Fig. 1A). Posterior transverse carina of propodeum complete, inverted U-shaped ( Fig. 1G). Ovipositor sheath 0.9–1.05 × as long as hind tibia. Small species: body length 7.5–9.2 mm.

.................... Aconias concavopropodeonus ( Uchida, 1952) View in CoL -. Hind tarsus with white area (usually TS III and IV) ( Fig. 5A). Posterior transverse carina sometimes weak medially, inverted V-shaped ( Fig. 5F). Ovipositor sheath 1.1–1.25 × as long as hind tibia. Large species: body length 7.4–10.3 mm. ................................... Aconias tarsatus (Bridgemann, 1881) View in CoL (= Ac. albitarsis (Uchida, 1936) View in CoL syn. nov.) 4. Legs black except for base of hind tibia tinged with yellowish-brown ( Fig. 3A). Scutellum reddish-brown ( Figs. 3B, G). Face black ( Fig. 3C). T I 2.4 × as long as maximum width. Distribution: Honshu.

............................................................ Aconias fujiei sp. nov. -. Legs reddish-brown to reddish-yellow except for fore and mid coxae, trochanters, and trochantelli white ( Figs. 4A, B, H). Scutellum yellow ( Figs. 4B, F). Face partly tinged with yellowish-brown ( Fig. 4C). T I 2.5–2.75 × as long as maximum width. Distribution: Ryukyu Islands.

................................................ Aconias longisetosus sp. nov. 5. Scutellum with yellow spot apically ( Figs. 2B, E). Lateral section of anterior transverse carina complete ( Fig. 2E). Hind femur 6.0–6.25 × as long as maximum depth in lateral view. T I 3.85–4.15 × as long as maximum width. T II 1.8–2.0 × as long as maximum width.

.................... Aconias concavopropodeonus ( Uchida, 1952) View in CoL -. Scutellum without yellow spot ( Fig. 6B). Lateral section of anterior transverse carina absent or incomplete. Hind femur 7.2–8.0 × as long as maximum depth in lateral view. T I 4.45–5.2 × as long as maximum width. T II 2.4–2.5 × as long as maximum width.

.................................. Aconias tarsatus (Bridgemann, 1881) View in CoL

(= A. albitarsis (Uchida, 1936) View in CoL syn. nov.)