Enicospilus tripartitus Chiu, 1954

Shimizu, So, Broad, Gavin R. & Maeto, Kaoru, 2020, Integrative taxonomy and analysis of species richness patterns of nocturnal Darwin wasps of the genus Enicospilus Stephens (Hymenoptera, Ichneumonidae, Ophioninae) in Japan, ZooKeys 990, pp. 1-144 : 1

Enicospilus tripartitus Chiu, 1954 Figure 49

Enicospilus tripartitus Chiu, 1954: 36; HT ♀ from Taiwan, TARI, examined.

Specimens examined.

Total of 67 specimens (39♀♀26♂♂ and 2 unsexed): China (1♀), India (1♂), Japan (12♀♀14♂♂ and 1 unsexed), Nepal (24♀♀8♂♂ and 1 unsexed), Taiwan (2♀♀), unknown (3♂♂).

Type series: HT ♀ of Enicospilus tripartitus Chiu, 1954, Taihoku, TAIWAN, 27.VIII.1937, J. Sonan leg. (TARI); PT ♂ of E. tripartitus , no data (NHMUK).

Distribution.

Eastern Palaearctic and Oriental regions ( Yu et al. 2016).

JAPAN: [ Tôhoku] Miyagi*; [Hokuriku] Niigata* and Ishikawa*; [ Kantô-Kôshin] Kanagawa*; [ Tôkai] Shizuoka*, Aichi*, and Mie*; [ Chûgoku] Shimane* and Hiroshima ( Maeto and Shimizu 2019; present study); [Shikoku] Tokushima* and Kôchi *; [ Kyûshû] Ōita ( Chiu 1954); [ Ryûkyûs] Kagoshima* and Okinawa ( Chiu 1954; Shimizu 2020; present study). *New records.

Bionomics.

Unknown.

Differential diagnosis.

This species resembles E. laqueatus , E. pseudantennatus , and E. vestigator in the shapes of the sclerites, but can easily be distinguished by the dense and stout setae and punctures of the outer mandibular surface (Fig. 49B, D ), deep basal concavity of the outer mandibular surface (Fig. 49B, D ), etc., as summarised in Table 6 .

Figures

Figure 49. Enicospilus tripartitus Chiu, 1954 ♂ from Japan A habitus B head, frontal view C head, dorsal view D head, lateral view E mesosoma, lateral view F central part of fore wing.