Corresponding authors: Rikio Matsumoto (
Academic editor: Stefan Schmidt
Two new species of the genus
Type specimens of the two new species are preserved in the collection of Osaka Museum of Natural History (OMNH), except the holotype of
Medium to large ichneumonids with fore wing length 12–26 mm. Apical segment of flagellum tapered apically, with distal end narrowly truncate; eyes with inner margins parallel; lower face transverse, about 1.3 × as broad as high at narrowest point; clypeus (
Scanning electron micrographs of
Host unknown. Females of
1 | Body black to reddish brown ( |
2 |
– | Body yellowish/tan brown ( |
|
2 | Subalar prominence yellow ( |
|
– | Subalar prominence reddish brown, concolourous with rest of mesopleuron ( |
Gauld’s (1991) description is sufficient for recognition of
♀ (Fig. 1), 21–27. iv.2008 (Malaise trap), Aha, (26°42'52"N, 128°16'09"E (WGS 84), 150m a.s.l.), Kunigami-son, Okinawa-jima, Okinawa Pref., Ryukyus, Japan (K. Sugino) [OMNH, TI-480].
3♀, 7–21.iv, 21–27.iv, 20–26.v, (OMNH), 1♀, 14–20.v (BMNH), otherwise same data as holotype, collected in a Malaise trap operated by K. Sugino.
This species can be distinguished from all congeners by the following: pronotum with weak, medially incomplete oblique groove from epomia to ventroposterior corner; area dorsal to this groove weakly punctate; subalar prominence yellow; first metasomal tergite with apical whitish band; tergites 2–5 each with paired whitish transverse markings apically, these markings sometimes fused dorso-medially.
Female. Length of fore wing 12–13 mm. Malar space (
Unknown.
Japan: Ryukyus (Okinawa-jima).
We are very pleased to be able to name this species after the late Dr Ian Gauld, who recognised
Host unknown. Females were caught in Malaise traps positioned alongside paths in mature evergreen and broad-leaved forest of low altitude. Adult wasps were captured in April, May and June, suggesting spring emergence and early summer activity of adult wasps.
♀ (
[Taiwan] 3♂, 9. iv. 1996, Kuantaoshan, Nantou (R.M.) (OMNH).
This species can be distinghished from all congeners by the following: Pronotum with strongly impressed and transversely striate groove from epomia to ventroposterior corner; area dorsal to this groove rather strongly and densely punctate; subalar prominence reddish brown, without yellow mark; metasomal tergites entirely brown to reddish brown, without whitish transverse markings apically.
Female. Length of fore wing 12 mm. Malar space about 0.2 × basal width of mandible. Pronotum (
Fore and hind wing of
Scanning electron micrographs of
Similar to female but smaller. Length of fore wing 8.0–9.5 mm. Body colour similar to that of female; dark stripe on dorsal face of mid coxa reduced; hind femur blackish dorsally; metasoma reddish brown; fore wing without brown spot.
Taiwan (central mountainous region).
This species is named after Dr Masatoshi Takakuwa who collected the Holotype.
Host unknown. Adult wasps were hand netted in mature forest of rather high altitude (1,100–1,400m a.s.l.). Both the preceding species and this Taiwanese species have only been found in mature forest.
In addition to the characters listed in the original description of
The first author would like to express his sincere gratitude to Kouichi Sugino (Kunigami Tourism Association, Okinawa) and Masatoshi Takakuwa (Kanagawa Prefectural Museum of Natural History) for offering valuable materials and information. Thanks are also due to Manabu Yashiro (Kakogawa City) for his help in sorting ichneumonids from numerous Malaise trap samples. Two reviewers provided constructive criticism that improved this paper.