Nesodiprion tsugae Togashi 2001
Creators: name: Hara, Hideho
name: Smith, David R.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Diprionidae
Nesodiprion
Nesodiprion tsugae

description: Nesodiprion tsugae Togashi, 2001
Figs 1A–D, 5A–C, 7A, 8A, 9A, 11A–B, 12A–B, 13A–B, 14D–E, 15A–B, 16A, 17A–B, 18A
Nesodiprion tsugae Togashi, 2001: 915; Taeger et al. 2010: 210; Hara & Smith 2012: 22.
Additional description of female (holotype). Shiny, without colored metallic reflections (Figs 1A–B). Palpi yellow, basally darkened. Tibial spurs brown.
Head and thorax with punctures shallow and ill-defined or fine, partly large and well defined (Figs 5A–B, 9A); punctures on dorsal part of mesepisternum large, predominantly contiguous or fused (Fig. 11A). First tergum inconspicuously punctured on narrow medial area (Fig. 13A).
Distance between eyes 1.7 × eye height. Distance between eye and lateral ocellus 1.2 × distance between lateral ocellus and posterior margin of head. First flagellomere in lateral view with length along dorsal margin 1.1 × apical breadth except for ramus and ramus length 1.1 × its flagellomere length (Fig. 7A). Anterior edge of mesoscutellum angled about 100° (Fig. 9A). In hind leg in lateral view, first tarsomere length 1.1 × tibia breadth (Fig. 12A). In hind wing, section of vein 1A between crossveins a and cu-a 0.9 × as long as width of cell 1A.
Lance as in Figs 15A–B. Lancet (Fig. 16A) slightly concave on ventral margin in outline, with length from apex to ventral end of first row of spines 3.7 × maximum width and apex narrowly rounded; first (most basal) row of spines (ctenidium) curved, and its ventral end widely separated from ventral margin of lancet; first annulus without serrula; second row of spines sinuated; all serrulae posteriorly angularly convex; distance between serrulae of second and third annuli (d in Fig. 16A) about 2 × length of serrula of second annulus (s in Fig. 16A).
Description of male (hitherto undescribed). Length 5.0 mm (Figs 1C–D). As in female, but differing as follows except for usual sexual differences.
Punctures on head relatively distinct (Fig. 5C); those on dorsal part of mesepisternum predominantly shallow and ill defined (Fig. 11B); dorsum of abdomen apically shallowly punctured (in holotype, female, apex of abdomen missing).
Distance between eyes 1.5 × eye height. Postocellar area with width 1.9 × length. Ratio of distances between eye and lateral ocellus, between lateral ocelli and between lateral ocellus and posterior margin of head 1.0:1.0:0.7; ratio of distances between eye and lateral ocellus and between lateral ocellus and posterior margin of head 1.4:1.0 (Fig. 5C). Distance between torulus and eye 1.1 × distance between toruli. Malar space 1.0 × width of median ocellus. Antenna with 24 antennomeres. Anterior edge of mesoscutellum angled about 110°. In hind leg in lateral view, first tarsomere length 1.3 × tibia breadth (Fig. 12B). In hind wing, section of vein 1A between crossveins a and cu-a 1.2 × as long as width of cell 1A. Subgenital plate in ventral view with apical margin gently rounded (Fig. 1D).
Genital capsule (Figs 14A–B) wide in dorsal or ventral view. Parapenis in ventral view wide, apically rounded. Harpe in ventral view with medial margin nearly straight, basally gently rounded, and apex narrowly rounded. Valviceps in dorsal view narrow and straight, in lateral view (Fig. 18A) wide, with dorsal margin nearly straight and distinctly convex near apex.
Material examined. Holotype (Figs 1A–B): ♀, “Togakushi, 6-V '85 Em. [emerged], Aut. [autumn] ' 84 L. [larva], H. Kojima leg. [Kometsuga (in Japanese, = Tsuga diversifolia)]” (NSMT). Other material examined: JAPAN, HONSHU— 1♂, “[Togakushi], 6?V?1985 Em., Aut. ' 84 L., [Kometsuga] H. Kojima leg.” (NSMT).
The data of the male is identical with that of the holotype. The collector, H. Kojima, sent two females and two males reared from a group of gregarious larvae on Tsuga diversifolia collected at Togakushi to the late Prof. Okutani at Kobe University on June 1985 (Kojima, personal communication, 2014). The holotype and the male are unquestionably part of those four specimens and siblings.
Distribution. Japan: Honshu.
Host plant. Pinaceae: Tsuga diversifolia (Maxim.) Mast.
Life history. A larval group was collected in autumn in a mountainous region in Honshu. Larvae are yellow orange and gregariously feed on needles (Kojima, personal communication, 2014, 2015).
Remarks. This species is very similar to N. kojimai sp. nov. below. For their differences, see under the remarks of the latter species and the key below.
description: Published as part of Hara, Hideho & Smith, David R., 2015, Japanese species of the sawfly genus Nesodiprion (Hymenoptera, Diprionidae), pp. 481-508 in Zootaxa 4007 (4) on pages 485-486, DOI: 10.11646/zootaxa.4007.4.2, http://zenodo.org/record/235502