Monochamus sartor urussovi (Fisher von Waldheim, 1805 ) Wallin & Schroeder & Kvamme, 2013

Wallin, Henrik, Schroeder, Martin & Kvamme, Torstein, 2013, A review of the European species of Monochamus Dejean, 1821 (Coleoptera, Cerambycidae) - with a description of the genitalia characters, Norwegian Journal of Entomology 60, pp. 11-38 : 23-25

publication ID	https://doi.org/10.5281/zenodo.16005904
persistent identifier	https://treatment.plazi.org/id/9E6887F3-735F-FFC0-FFAD-2684FF53FD36
treatment provided by	Felipe
scientific name	Monochamus sartor urussovi (Fisher von Waldheim, 1805 )
status	stat. nov.

Treatment

Monochamus sartor urussovi (Fisher von Waldheim, 1805) View in CoL nov. stat.

Cerambyx urussovi Fisher von Waldheim, 1805: 12

= Monohammus quadrimaculatus Motschulsky, 1845: 86 View in CoL

= Monochamus schaufusi Pic, 1912: 18

Figures 9, 10, 11 View FIGURES 1–11 , 19, 20, 21, 22, 23 View FIGURES 12–23 , 30 View FIGURES 26–32 , 33C, 34 View FIGURES 33–35 , 41, 42, 43 View FIGURES 36–44 , 49 View FIGURES 45–50 , 57, 58 View FIGURES 51–62 , 71, 72 View FIGURES 63–72 , 73, 74 View FIGURES 73–78 , 83, 84. View FIGURES 79–87

A large and robust subspecies, similar in size to M. sartor sartor ( Figures 9, 10, 11 View FIGURES 1–11 , 19, 20, 21, 22, 23 View FIGURES 12–23 ). A distinct elevated area on the middle of basal third of elytra followed by an impression immediately below the elevation. Basal half of elytra with smooth and raised granulation, especially towards humeri. Posterior part of elytra with weak to relatively dense punctuation (sometimes surrounded by short, slightly raised longitudinal and transversal carinae forming a fine square pattern) towards apices. The elytral punctuation in specimens from the far east of Russia and Japan is mostly very weak (anterior part of elytra shining). Exposed integument on elytra shining. Apical third of elytra with weak to dense brownish or yellowish pubescence (coarser near apices). Males from Scandinavia and the Baltic states have weaker, brownish pubescence on apical third of elytra ( Figures 19, 20 View FIGURES 12–23 ), whereas the corresponding pubescence on specimens from the Far East of Russia and Japan is distinctly yellowish ( Figures 22, 23 View FIGURES 12–23 ). Elytra in males rarely with small and scattered whitish spots towards

and on epipleuron. Elytra in females with four conspicuous distinct whitish to yellowish spots: two above and two below the middle, sometimes with small scattered yellowish spots on the elytra, at least on epipleuron ( Figures 9, 10, 11 View FIGURES 1–11 ). Pronotum in males black. Pronotum in females sometimes with two brownish spots above middle and with brownish pubescence laterally ( Figure 10 View FIGURES 1–11 ). Scutellum completely covered with very dense whitish to yellowish pubescence. Type locality: Russia (Moscow environment) .

Examined males: length 22.0– 30.5mm, width 7.0–9.0mm; female: length 24.0–30.0mm, width 6.5–9.5mm.

Male terminalia. Aedeagus: 3.5–4.1mm long, stout, weakly curved towards apex, dorsal ridge as wide as ventral ridge, dorsal and ventral ridges almost straight at apex ( Figures 57, 58 View FIGURES 51–62 ). Colour yellowish to brown. The aedeagus shows very little variability between specimens from different populations with no difference between specimens of M. sartor sartor and M. sartor urussovi . Endophallus: approx. 9.0mm long and evenly broad from median to apical phallomer ( Figure 33C View FIGURES 33–35 ). There is no difference in the shape of endophallus between specimens of M. sartor sartor and M. sartor urussovi . The two brownish crescent-shaped sclerites at the proximal end of the basal phallomer are broad and only partly folded ( Figure 49 View FIGURES 45–50 ). The colour is yellowish in teneral (newly emerged) specimens ( Figure 49 View FIGURES 45–50 ). Lower part of median phallomer with an elongated micro-reticulated patch on the phallomer membrane ( Figures 33C View FIGURES 33–35 , 43 View FIGURES 36–44 ). There is no difference in the characters of endophallus between specimens of M. sartor sartor and M. sartor urussovi . Internal sac (apical part of median phallomer): there is a solid (but not sclerotized) tube, or terminal segment, embedded inside the internal sac ( Figures 33C View FIGURES 33–35 , 41 View FIGURES 36–44 ). The very small sclerotized structure is found inside the apical part of the terminal segment. The small sclerites (approx. 0.1mm long) are “U”-shaped, and show some variability between examined specimens, and the variation involves specimens of both M. sartor sartor and M. sartor urussovi . ( Figure 34 View FIGURES 33–35 ). Surface of the internal sac with very fine micro-reticulation ( Figure 42 View FIGURES 36–44 ), sometimes slightly finer than in M. sartor sartor . Colour yellowish to dark brown. Tegmen: 3.9–4.9mm long, base of tegmen extended and acutely curved dorso-ventrally on middle. Parameres: elongated, slender and flattened dorso-ventrally, well separated medially along inner margin and often connecting towards apex with some variation between examined specimens ( Figure 71 View FIGURES 63–72 ). Base of inner margin with

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a distinct extension from each paramere projecting forward forming a “tooth” ( Figures 71 View FIGURES 63–72 , 73, 74 View FIGURES 73–78 ). Apex evenly rounded along posterior margin with fringes of relatively long, brownish hairs well concentrated at edge of apex (often extended to the apical part of ventral surface) ( Figure 71 View FIGURES 63–72 ). Ventral surface of parameres with scattered punctures and fine hairs ( Figure 72 View FIGURES 63–72 ). No micro-reticulation on parameres. The shape of the parameres shows some variability between examined specimens ( Figures 71 View FIGURES 63–72 , 73, 74 View FIGURES 73–78 ). Tergite VIII: 1.8–2.1mm long, brownish to black pigmentation, posterior margin slightly elongated and narrowly rounded, and covered with short, brownish hairs (mixed with scattered yellowish setae) distally towards the posterior margin ( Figures 83, 84 View FIGURES 79–87 ). Surface with very weak micro-reticulation medially. Some variation (similar to M. sartor sartor ) was also noted in M. sartor urussovi . regarding the shape of the posterior margin og tergite VIII, with the exception of the posterior margin which is notched on the middle ( Figure 83 View FIGURES 79–87 ) in specimens from Siberia and Japan only.

Female terminalia. Tignum: relatively thick (width: approx. 0.5mm at the widest point apically), almost straight but sometimes slightly twisted apically, 12.5–15.0mm long ( Figure 30 View FIGURES 26–32 ). It was noted that newly hatched (teneral) specimens had a slightly narrower tignum, and the entire tignum in fully mature specimens is covered with a layer of relatively soft (dark brown) tissue. Tergite VIII: posterior margin (width: 2.5mm) with relatively long fringes of dark brown hairs laterally ( Figure 30 View FIGURES 26–32 ), surface dorso-laterally with a few scattered and small granulae, and covered with very fine yellowish pubescence and a few brownish setae, dorso-medially with more or less weak micro-reticulation and a distinct longitudinal impression. The colour is brown. Spermathecal capsule: Well sclerotized, yellowish to brownish, relatively long, widened at base, and curved almost 180° towards apex ( Figure 30 View FIGURES 26–32 ). Apex with an elongated head, 1.5mm long, similar to M. sartor sartor .