Aptesis Förster, 1850

Genus Aptesis Förster, 1850 View in CoL View at ENA

Aptesis Förster, 1850: 71 View in CoL . Type species: Ichneumon sudeticus Gravenhorst, 1815 . Designated by Viereck (1914).

Pezoporus Förster, 1869: 181 View in CoL . Type species: Ichneumon nigrocinctus Gravenhorst, 1815 . Name preoccupied.

Clypediodon Aubert, 1968: 7. Type species: Aptesis (Clypeodiodon) flavifaciator Aubert, 1968 View in CoL . Original designation.

Diagnosis. Townes (1970) proposed diagnosis of this genus. We refer it with some additional data of character states of Japanese species below. Clypeus weakly to moderately convex in lateral view, its apex truncate or somewhat arcuate ( Figs 1B View Fig , 2B View Fig , 3A, B View Fig ). Median 0.2 and more of apical margin of clypeus sharp, narrowly reflexed ( Figs 1B View Fig , 2B View Fig , 3A, B View Fig ). Mandible with two teeth, its upper tooth as long as ( Fig. 3B View Fig ) or shorter than lower tooth. Apical half of flagellum not strongly flattened below, not strongly tapered to apex ( Figs 1A View Fig , 2A View Fig , 3A View Fig ). Basal flageller segments short and slender ( Figs 1A View Fig , 2A View Fig , 3A View Fig ), F2 shorter than 3.3 times as long as wide in lateral view. Propodeal spiracle not strongly elongate ( Fig. 3E View Fig ), at most 2.0 times as long as wide. Areolet pentagonal ( Fig. 3C View Fig ). Spiracle of T1 situated behind the mid-length ( Fig. 3D View Fig ). Postpetiole usually with a complete or incomplete dorsolateral longitudinal carina or ridge between its spiracle and apicolateral corner ( Fig. 3D View Fig ). T2 more or less polished ( Figs 1A, F View Fig , 2A View Fig ). Ovipositor straight, its upper valve without oblique or transverse teeth ( Figs 1A View Fig , 3F View Fig ).

Distribution. Holarctic, Oriental and Afrotropical regions ( Yu et al., 2012).

Remarks. Eleven species of this genus were previously recorded from Eastern Palaearctic region ( Yu et al., 2012; Li et al., 2013). Japanese fauna of this genus is still poorly studied. We recognized seven species of this genus from Japan. Three of them are described species, A. albibasalis ( Uchida, 1930) , A. albidipes (Walker, 1874) and A. opaca (Cushman, 1937) . In this study, we describe a new species, Aptesis flavitrochanterus sp. nov., which was previously recorded as Aptesis sp. A by Taniwaki & Watanabe (2012). The remainders may be undescribed or unrecorded species.

Females of Japanese species of this genus can be distinguished by the following preliminary key. Identification of males difficult, thus identification of the new species should be compared with the following original description.