Enicospilus nigronotatus Cameron, 1903

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 nigronotatus Cameron, 1903 Figure 32

Enicospilus nigronotatus Cameron, 1903: 133; LCT ♀ from Borneo, designated by Townes et al. (1961: 284), NHMUK, examined.

Henicospilus triguttatus Uchida, 1928: 221; HT ♀ from Taiwan, SEHU, examined; synonymised by Gauld and Mitchell (1981: 310).

Specimens examined.

Total of 18 specimens (11♀♀4♂♂ and 3 unsexed): Brunei (2♀♀2♂♂ and 1 unsexed), Indonesia (2♀♀), Japan (1♀2♂♂), Singapore (1♀), Sri Lanka (2♀♀ and 2 unsexed), Taiwan (2♀♀), unknown (1♀).

Type series: LCT ♀ of Enicospilus nigronotatus Cameron, 1903, Borneo, MALAYSIA, Cameron leg. (NHMUK, Type 3b.1271); HT ♀ of Henicospilus triguttatus Uchida, 1928, Horisha, TAIWAN, Matsumura leg. (SEHU).

Distribution.

Oriental region ( Yu et al. 2016).

Newly recorded from Indonesia.

JAPAN: [ Ryûkyûs] Okinawa ( Shimizu and Maeto 2016; present study).

Bionomics.

Unknown.

Differential diagnosis.

This species is an extremely large insect, as is E. nigristigma . Gauld and Mitchell (1981) suggest that this species is related to E. trilobus and we agree with this. Although E. nigronotatus is probably related to E. trilobus , E. nigronotatus can be distinguished from it by characters such as the shape of the fore wing fenestra, i.e., fenestra very long, proximally extensively glabrous and proximal end of fenestra widely touching the anterior margin of the discosubmarginal cell, as in Fig. 32F , but fenestra short and the proximal end of the fenestra widely separated from the anterior margin in E. trilobus .

This species is easily distinguishable from all other Japanese Enicospilus species by the following combination of character states: large size; interocellar area red-brown (Fig. 32C ); mesopleuron never entirely coarsely longitudinally striate (Fig. 32E ); metapleuron and propodeum coarsely rugose (Fig. 32E ); fore wing with both CI and ICI more than 0.7 (Fig. 32F ).

Figures

Figure 32. Enicospilus nigronotatus Cameron, 1903 ♀ 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.