Pristaulacus boninensis Konishi 1989

(Figs. 22–28)

[Japanese name: Ogasawara-sedaka-yasebachi]

Pristaulacus boninensis Konishi 1989: 337.

Description. See Konishi (1989, 1990) and Turrisi (2007: 16). Here we describe male genitalia of this species for the first time.

Subgenital plate with a short apodema sternalis, anterior margin round laterally, straight to slightly concave medially, its median part with scale-like sculpture (Fig. 24). Apex of paramere acute, cuspis wide and curved, digitus wide with lower apex narrow and long (Figs. 25, 26, 28). Aedeagus more or less straight, its penis valve about 2.5 times as long as basal apodeme (Fig. 27), its apex produced in dorsal and ventral views (Figs. 25, 26).

Material examined. JAPAN, Tokyo, Ogasawara Islands. [Anejima Island] 1 male, 16. vii. 2007, H. Karube leg. (KPMNH) (KPM-NK5001140). [Anijima Island] 1 male, 8. vi. 2006, ex. from dead wood of Distylium racemosum, H. Karube leg. (KPMNH) (KPM-NK5001141); 3 females, 18. viii. 2010, Malaise trap by JFTA (KPMNH) (KPM-NK5001142–KPM-NK5001144); 1 female and 6 males, 14. ix. 2009, Malaise trap by JFTA (KPMNH) (KPM-NK5001145–KPM-NK5001151); 2 females and 4 males, 8. vii. 2009, Malaise trap by JFTA (KPMNH) (KPM-NK5001152–KPM-NK5001157); 4 females and 10 males, no data of month and day, 2010, Malaise trap by JFTA (2 females and 2 males in UCTC; others in KPMNH) (KPM-NK5001158–KPM- NK5001167); 1 female and 1 male, no data of month and day, 2005, H. Karube leg. (KPMNH) (KPM- NK5001168–KPM-NK5001169). [Hahajima Island] 1 female (holotype), 1–8. vii. 1986, H. Makihara leg. (NIAES). [Imoutojima Island] 1 female, 23. vi. 2006, H. Karube leg. (KPMNH) (KPM-NK5001170). [Mukojima Island] 1 female, 10. vi. 2007, H. Karube leg. (KPMNH) (KPM-NK5001171). [Mukoujima Island] 1 female and 1 male, 21. vi. 2009, Malaise trap by JFTA (KPMNH) (KPM-NK5001172–KPM-NK5001173). [Otoutojima Island] 1 male, Shikanohama to Hirone, 12. vi. 2006, H. Karube leg. (KPMNH) (KPM-NK5001174).

Distribution. JAPAN (Ogasawara Islands: Anejima Island, Anijima Island, Chichijima Island, Hahajima Island, Imoutojima Island, Mukojima Island, Mukoujima Island and Otoutojima Island). Biology. Konishi (1989, 1990) recorded the host of this species: Ceresium unicolor (Fabricius 1787) (Coleoptera, Cerambycidae). The host cerambicid beetle used an introduced plant, Leucaena leucocephala (Fabaceae).

Remarks. This species is newly recorded from Anejima Island, Anijima Island, Imoutojima Island, Mukojima Island, Mukoujima Island and Otoutojima Island.