Nesodiprion nigerrimus Togashi, 1998

Hara, Hideho & Smith, David R., 2015, Japanese species of the sawfly genus Nesodiprion (Hymenoptera, Diprionidae), Zootaxa 4007 (4), pp. 481-508 : 498-502

publication ID	https://doi.org/ 10.11646/zootaxa.4007.4.2
publication LSID	lsid:zoobank.org:pub:6EEDD233-746F-4A04-84CD-565540676C60
DOI	https://doi.org/10.5281/zenodo.5669562
persistent identifier	https://treatment.plazi.org/id/643687C2-D84D-FFA2-FF7B-FA01F38CF900
treatment provided by	Plazi
scientific name	Nesodiprion nigerrimus Togashi, 1998
status

Treatment

Figs 3C–D View FIGURES 3 A – M , 6C View FIGURES 6 A – I , 7G View FIGURES 7 A – J , 9H View FIGURES 9 A – L , 11H View FIGURES 11 A – L , 12I View FIGURES 12 A – M , 13H View FIGURES 13 A – K , 14N–O View FIGURES 14 A – Y , 15I, 16G

Nesodiprion nigerrimus Togashi, 1998: 257 ; Taeger et al. 2010: 210; Hara & Smith 2012: 22.

Additional description of female (holotype). Shiny, without colored metallic reflections ( Figs 3C–D View FIGURES 3 A – M ). Pronotum entirely black. Legs black, slightly whitish to brownish on fore and middle tibiae, pale gray on hind tibia except for apical fourth and bases of tarsi (not as in original description).

Head with punctures generally fine and mostly not contiguous on dorsal area, and relatively large, shallow and mostly fused on anterodorsal area ( Fig. 6C View FIGURES 6 A – I ). Thorax with punctures fine and predominantly separated on mesoscutum, generally large and predominantly contiguous on mesoscutellum ( Fig. 9H View FIGURES 9 A – L ), and large and mostly contiguous on dorsal part of mesepisternum ( Fig. 11H View FIGURES 11 A – L ). First abdominal tergum not punctured ( Fig. 13H View FIGURES 13 A – K ) (not as in original description).

Distance between eyes 1.4 × eye height. Postocellar area with length 1.6 × width. Malar space 0.7 × width of median ocellus. Antenna with 25 antennomeres ( Fig. 7G View FIGURES 7 A – J ) (not as in original description); first flagellomere in lateral view with length along dorsal margin 0.7 × apical breadth except for ramus and length of ramus 3.2 × as long as length of flagellomere. Anterior edge of mesoscutellum angled at about 120° ( Fig. 9H View FIGURES 9 A – L ). In hind leg, first tarsomere length 1.6 × tibia breadth ( Fig. 12I View FIGURES 12 A – M ). In hind wing, section of vein 1A between crossveins a and cu-a 0.7 × as long as width of cell 1A.

Ovipositor sheath as in Figs 14N–O View FIGURES 14 A – Y . Lance as in Fig. 15I. Lancet (Fig. 16G) with 11 annuli (not as in fig. 44 in Togashi 1998 and not as stated by Togashi 2001), with length from apex to ventral end of basal row of spines 2.6 × maximum width; first row of spines nearly erect, extending to ventral margin of lancet, namely first annulus with distinct serrula; border of first and second annuli ventrally convex; serrula of second annulus enlarged, with posterior convexity apically narrowly truncate and anterior slope much shorter than posterior slope; serrulae of third and fourth annuli each posteriorly convex; serrulae of fifth to eighth annuli simple.

FIGURES 15A–O. Lance or ovipositor: Nesodiprion tsugae (A–B), N. kojimai (C–D), N. niger (E–F), N. flavipes (G–H), N. nigerrimus (I), N. kagaensis (J–K) and N. shinoharai (L–O). A, C, E, G, J, L, Dorsal view; B, D, F, H–I, K, M, O, lateral view; N, basal part of lance, ventromedial view; B, M, reversed. A–I, O, Holotypes; J–K, Morioka; L–N, Komoro.

FIGURES 16A–L. Lancet: Nesodiprion tsugae (A), N. kojimai (B–C), N. niger (D), N. flavipes (E–F), N. nigerrimus (G), N. kagaensis (H–J) and N. shinoharai (K–L). In A, s and d show the serrula length in a second annulus and the distance between serrulae of second and third annuli respectively. A, F, I, L, Reversed. A–B, D–E, G, K, Holotypes; C, Yamanouchi; F, Hachimantai; H, Nopporo; I, Morioka; J, Kodaira; L, Komoro.

Material examined. Holotype ( Figs 3C–D View FIGURES 3 A – M ): ♀, “Beppu, Oita-Ken, 10-V-1932, coll. H. Sugiura” ( NSMT). Distribution. Japan: Kyushu.

Remarks. The female of N. nigerrimus is characterized by the leg coloration ( Fig. 3D View FIGURES 3 A – M ; the coxae to femora are uniformly black and the hind tibia is basally widely pale) and the distinct serrula on the first annulus (Fig. 16G). Togashi (1998) stated that N. nigerrimus is very closely allied to N. japonicus , but is easily distinguished from the latter by the punctures on the first abdominal tergum, the shape of the ovipositor sheath and the black mesoscutellum. However, the first abdominal tergum is not actually punctured ( Fig. 13H View FIGURES 13 A – K ). The shape of the ovipositor sheath is within the range of individual variations of N. japonicus , and the shape of the ovipositor sheath and the black mesoscutellum each are within the ranges of individual variations of N. kagaensis .

FIGURES 17A–L. Male genitalia: Nesodiprion tsugae (A–B), N. kojimai (C–D), N. flavipes (E–F), N. kagaensis (G–J) and N. shinoharai (K–L). A, C, E, G, I–K, Dorsal view; B, D, F, H, L, ventral view. A–B, Togakushi; C–D, paratype, Yamanouchi; E– F, paratype, Chino; G–H, Nopporo; I, Eniwa; J, Katsushika; K–L, Komoro.