Nesodiprion flavipes, Hara, Hideho & Smith, David R., 2015

Hara, Hideho & Smith, David R., 2015, Japanese species of the sawfly genus Nesodiprion (Hymenoptera, Diprionidae), Zootaxa 4007 (4), pp. 481-508 : 492-495

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.5669558
persistent identifier	https://treatment.plazi.org/id/643687C2-D857-FFB9-FF7B-FB54F343F820
treatment provided by	Plazi
scientific name	Nesodiprion flavipes
status	sp. nov.

Treatment

Nesodiprion flavipes sp. nov.

Figs 2A–D View FIGURES 2 A – D , 5G–I View FIGURES 5 A – I , 7E View FIGURES 7 A – J , 8D–E View FIGURES 8 A – J , 9E–F View FIGURES 9 A – L , 10C View FIGURES 10 A – L , 11E–F View FIGURES 11 A – L , 12F–G View FIGURES 12 A – M , 13E–F View FIGURES 13 A – K , 14A, J–K View FIGURES 14 A – Y , 15G–H, 16E–F, 17E–F, 18C

Description of female [condition of holotype in brackets]. Length 5.3–6.8 [5.3] mm. Black, shiny, without metallic reflections ( Figs 2A–B View FIGURES 2 A – D ). Labrum pale brown. Antenna sometimes basally partly dark brown [partly dark brown]. Mandible apically red brown. Palpi yellow, basally darkened. Pronotum widely yellow or brown posterolaterally [yellow]. Mesepisternum rarely with narrow yellow spot centrally [entirely black]. Legs yellow; coxae basally darkened. Stigma black, centrally slightly pale; veins black; C dark brown.

Punctures on head and thorax predominantly fine and shallow ( Figs 5G View FIGURES 5 A – I , 9E View FIGURES 9 A – L ), separated. Punctures generally large and distinct on frontal area of head ( Fig. 5H View FIGURES 5 A – I ), mostly fused on ventral area of head capsule. Clypeus widely smooth ventrally. Labrum finely and sparsely punctured. Punctures on lateral part of mesoscutellum partly large ( Fig. 9E View FIGURES 9 A – L ). Those on dorsal part of mesepisternum large and distinct, partly contiguous ( Fig. 11E View FIGURES 11 A – L ). Dorsum of abdomen weakly and sparsely punctured posteriorly; first tergum not or faintly punctured on narrow medial area [not punctured] ( Fig. 13E View FIGURES 13 A – K ).

Distance between eyes 1.8–2.0 [1.9] × eye height. Postocellar area moderately convex, with width 1.8–1.9 × length ( Fig. 5G View FIGURES 5 A – I ). Ratio of distances between eye and lateral ocellus, between lateral ocelli, and between lateral ocellus and posterior margin of head 0.9–1.1:1.0:0.7–0.9 [1.0:1.0:0.8]; ratio of distances between eye and lateral ocellus and between lateral ocellus and posterior margin of head 1.1–1.3:1.0 [1.2:1.0]. Distance between torulus and eye 1.0–1.3 [1.1] × distance between toruli. Malar space 1.2–1.6 [1.4] × width of median ocellus. Clypeus with ventral margin rather deeply concave. Antenna ( Fig. 7E View FIGURES 7 A – J ) with 19–20 [19] antennomeres; first flagellomere in lateral view with length along dorsal margin 1.1–1.4 [1.4] × apical breadth except for ramus and ramus length 0.6– 0.9 [0.6] × its flagellomere length. Prepectus narrow or very small [very small] ( Figs 8D–E View FIGURES 8 A – J ). Anterior edge of mesoscutellum angled about 80–100° [100°] ( Fig. 9E View FIGURES 9 A – L ). In hind leg, first tarsomere length 1.1–1.2 [1.2] × tibia breadth ( Fig. 12F View FIGURES 12 A – M ). In hind wing, section of vein 1A between crossveins a and cu-a 0.8–1.1 [0.9] × width of cell 1A.

Ovipositor sheath as in Figs 14J–K View FIGURES 14 A – Y . Lance as in Figs 15G–H. Lancet (Figs 16E–F) with 11 annuli, widest around fifth annulus, nearly pointed at apex with length from apex to ventral end of first row of spines 3.6–3.7 [3.7] × maximum width; first row of spines oblique and dorsally curved, with its ventral end separated from ventral margin of lancet; first annulus without serrula; serrulae of second to fifth annuli simple; sixth to more posterior annuli posteriorly angularly convex.

Description of male. Length 5.5–5.8 mm ( Figs 2C–D View FIGURES 2 A – D ). As in female, but differing as follows except for usual sexual differences. Labrum pale or dark brown. Pronotum entirely black or narrowly yellow along posterolateral margin.

Dorsum of abdomen scarcely punctured posteriorly.

Postocellar area with width 1.9–2.1 × length. Ratio of distances between eye and lateral ocellus and between lateral ocellus and posterior margin of head 1.3–1.5:1.0. Antenna ( Fig. 2C View FIGURES 2 A – D ) with 20–22 antennomeres. In hind leg, first tarsomere length 1.4–1.6 × tibia breadth ( Fig. 12G View FIGURES 12 A – M ). Subgenital plate in ventral view with apical margin nearly truncate ( Fig. 2C View FIGURES 2 A – D ).

Genital capsule (Figs 17E–F) wide in dorsal or ventral view. Parapenis in ventral view wide, apically rounded. Harpe in ventral view with medial margin nearly straight, basally rounded, and apex narrowly rounded. Valviceps in dorsal view narrow and straight, in lateral view ( Fig. 18C View FIGURES 18 A – F ) wide, with dorsal margin distinctly concave at apical third.

Material examined. Holotype ( Figs 2A–B View FIGURES 2 A – D ): ♀, “ Larval group No. 7, JAPAN, HONSHU, Nagano pref., Chino, Mts. Yatsugatake, Mt. Shimagare-yama, coll. gregarious 36 larvae on Tsuga diversifolia 29. VIII. 2013, coc. 10–13. IX., em. 2. XI. 2013, H. Kojima” ( NSMT). Paratypes: JAPAN, HONSHU—1♀, Akita Pref., Hachimantai, 27. VII. 1950, Takeuchi (OPU); 12♀ 4♂, Nagano pref., Tomi, Mt. Kagonoto-yama, coll. gregarious larvae (larval group No. 1) on Tsuga diversifolia 31. VIII. 2013, coc. 1–16. IX., em. 13. X. 2013 – 13. IV. 2014, H. Kojima ( NSMT); 24♀ 11♂, do. but larval group No. 2, em. 5. X. 2013 – 11. III. 2014 ( NSMT, USNM); 8♀ 2♂, Nagano pref., Chino, Mts. Yatsugatake, Mt. Shimagare-yama, coll. gregarious 15 larvae on Tsuga diversifolia (larval group No. 2) 29. VIII. 2013, coc. 30. VIII.–9. IX., em. 6. X. 2013 – 11. III. 2014, H. Kojima ( NSMT); 3♂, do. but larval group No. 3, em. 10. X. 2013 – 12. I. 2014 ( NSMT); 2♀ 1♂, do. but larval group No. 5, coc. 10–17. IX., em. 24. I.–26. V. 2014 ( NSMT); 2♀ 1♂, do. but larval group No. 6, coc. 30. VIII.–9. IX., em. 3–30. III. 2014 ( NSMT); 2♂, do. but larval group No. 8, em. 12. XII. 2013 – 23. III. 2014 ( NSMT); 4♀, Nagano pref., Fujimi, Mts. Yatsugatake, Mt. Amigasa- yama, coll. gregarious 13 larvae on Tsuga diversifolia (larval group No. 1) 14. IX. 2010, coc. 15–28. IX., em. V. 2011, H. Kojima ( NSMT); 8♀, do. but larval group No. 2, coc. 15–23. IX. ( NSMT); 2♀, do. but larval group No. 3, coc. 24–25. IX. ( NSMT).

Etymology. The species name is from the Latin flavus + pes, meaning yellow legs or yellow feet, referring to the almost entirely yellow legs of the species.

Distribution. Japan: Honshu.

Host plant. Pinaceae : Tsuga diversifolia (Maxim.) Mast.

Life history. In mountainous regions in Honshu, one female was collected in late July, and larvae were found in late August to middle September. Larvae are yellow orange and feed gregariously on needles (Kojima, personal communication, 2015).

Remarks. Nesodiprion flavipes is easily distinguished from other congeners by the almost entirely yellow legs. Although the male of N. shinoharai has almost entirely yellow and orange legs, these two belong to different species groups and are easily distinguished as in the key below.