[Rhogogaster chlorosoma M] La larve sur le saule et l'imago (Russie)

[Andrey Ponomarev]

Bonjour


Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 22/09/2018
Altitude : 123 m - Taille : -
Réf. : 224996

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 22/09/2018
Altitude : 123 m - Taille : -
Réf. : 224997

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 22/09/2018
Altitude : 123 m - Taille : -
Réf. : 224998

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 27/09/2018
Altitude : 123 m - Taille : -
Réf. : 224999

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 27/09/2018
Altitude : 123 m - Taille : -
Réf. : 225000

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 27/09/2018
Altitude : 123 m - Taille : -
Réf. : 225001

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 28/09/2018
Altitude : 123 m - Taille : -
Réf. : 225003

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225004

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225005

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225006

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225007

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225008

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225009

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225010

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225011

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225012

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225013

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225014

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225015

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225016

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225017

Andrey Ponomarev : Russie : Orekhovo-Zuyevo : 142601 : 26/01/2019
Altitude : 123 m - Taille : -
Réf. : 225018

[pierred]

Andrey,

Merci encore.

[lauzette]

Je pense que c'est bien Rhogogaster chlorosoma.

[Vitaly]

C'est un .
La pulvilli a une longueur égale à la moitié de la longueur du deuxième segment de la tarsus arrière.
Si le choix est entre viridis et chlorosoma, alors, selon Benson, il s'agit de chlorosoma. Vol 6 Part 2b, p. 121.

Lauzette, votre hypothèse est-elle basée sur des pulvilli ou sur quelque chose d'autre?

[lauzette]

1. (aa) Terga more or less green, dorsally largely black and often forming a more or less broad median black stripe on the abdomen (Figs 3c–f); if terga nearly completely green, without lateral black spots; anterior margins of the terga not narrowly black, not different from the posterior parts of the tergum. (bb) Postocellar area and surrounding furrows mainly black, even in very pale specimens at least the anterior part of the postocellar area black (Figs 4b–l, n–p). (cc) Black color of the head usually more extensive and forming a ‘∞’ (Figs 4b–l): only upper parts of frontal ridges green, frontal field and frons between antennal furrow and inner eye margin largely black, the black parts fused above the antennal sockets, or face mainly black with small green spots on the upper frontal ridges (rarely completely black without green spots), exceptionally in very pale specimens the black mark above the antennae dissolved in small black spots; if exceptionally as in (c) (Figs 4n–p), then (a) and (b) do not fit. (dd) Upper head usually shiny, without or only with weak microsculpture. (ee) Plantar lobes usually larger, distance between 1st and 2nd in ♂ 0.6–2.0 ×, in ♀ 0.7–1.4 × as long as its own length (Figs 3h–n). (ff) Penis valve different (Figs 6a–c, f, h, j, k, m, n). (gg) Saw of viridis or scalaris type (Figs 5g, i–n). (hh) Median mesoscutal lobes usually mainly black, each with a more or less large lateral green spot, rarely com-pletely black (Figs 2c–g, 3c–f, s, t, 7a–c, n, o). Note. Sometimes Tenthredo olivacea Klug, 1817, is mistaken for a Rhogogaster species because of its similar coloration. It would run in the key here. Apart from different mandibles, the clypeus has a different shape, the inner margins of the eyes aremore strongly convergent, the tarsi in female are not ringed green black; postocellar area green, but temples beside the posto-cellar area black (Fig. 4x) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2(1). (aa) Female or male. (bb) Black color of the head usually more extensive and forming a ‘∞’(Figs 4b–l): only upper parts of frontal ridges green, frontal field and frons between antennal furrow and inner eye margin largely black, the black parts fused above the antennal sockets, or face mainly black with small green spots on the upper frontal ridges (rarely completely black without green spots), exceptionally in very pale specimens the black mark above the antennae dissolved in small black spots. (cc) Saw of scalaris type (Figs 5a, b, j, l), or viridis type with less prominent serrulae (Figs 5c, d, g, i, k, m) . . 3

3(2). (a) Occiput green, only black close to the foramen magnum and on the lower part of the back of the occipital area (Fig. 4b, c).
(b) Vertex beside postocellar area green, the black marks on the frons only reach the anterior parts of postocellar area (Fig. 4b, c). (c) Mesoscutellum and its appendage green, without black line between them (Fig. 3s). (d) Abdomen in ♂ dorsally without a complete median black stripe, in Fennoscandian ♂ terga 1–6(–7) with basal ± triangular median black spot, getting smaller and narrower toward the apex of abdomen, usually at least 8th tergite completely green (Fig. 3d), exceptionally also 8th tergite with narrow black mark; in Fennoscandian ♀ abdomen usually with a complete median black stripe that covers about 40–60 % of the dorsal surface (compare Fig. 3e); in specimens from other parts of Europe abdomen frequently less black to nearly completely green (Fig. 3c). (e) Plantar lobes very large, distance between 1st and 2nd in ♂ 0.6–0.8 (Fig. 3h), in ♀ 0.7–1.0 (Fig. 3i) × as long as its own length. (f) Penis valve Figs 6c, k. (g) Saw Figs 5a, b, j, l. Additional notes. Morphology: Body size in Fennoscandia ♂ 7.0–9.5, ♀ 9.0–11.0 mm (outside Fennoscandia ♂ up to 11, ♀ up to 13 mm). In Fennoscandia usually represented by a rather dark form. Mesoscutellum with weak microsculpture, often with distinct pits in the apical half, shiny; mesoscutellar appendage smooth and shiny, or with some pits. Mesoscutellum flat or slightly convex. Temples nearly without microsculpture, smooth and shiny. Postocellar area variable in size, about 2.0–2.8 × asbroad as long, slightly convex, laterally with moderately deep, converging furrows; anteriorly blunt triangular or nearly straight, with rather shallow furrow. Color: Occiput green, sometimes with few black markings connected with the black of the posterior area of the occipital area. Color pattern of head and thorax varies little. The green spots on median mesoscutal lobelarge, about same size as the spots on the lateral lobes. The latter are fused anteriorly of the scutellum. Scutellar groove some-times only narrowly black, in darker specimens anteriorly (lateral mesocutal lobes) black and posteriorly (mesoscutellum) green. Distribution: Europe (not recorded from Portugal and Greece), also eastern Palaearctic. Obviously rare in the subarctic region (only 1♀ from Narvik examined), more common in southern parts. In Central and Eastern Europe often more common than scalaris. Material: AT: 360 specimens (21 ♂♂ 46 ♀♀ from Fennoscandia), MV: about 500 specimens . . . . . . . . . . . . . . R. chlorosoma (Benson, 1943) ♂♀ (see p. 7)

Comme j'ai la flemme de tout traduire, je me base sur ce que je comprends le plus facilement...

[lauzette]

En gros, je me base sur l'abdomen, le dessin noir sur la tête et l'étendue du noir sur la tête, et sur le mésoscutellum (entièrement vert ou pas).

[Vitaly]

Merci lauzette !