Architesma turlini, Volynkin, 2025

Architesma turlini View in CoL sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:6BB6DC43-A3DE-426B-9FCF-795D35146C5B

( Figs 63–66 View Figures 63–75 , 130, 131 View Figures 130–133 , 165 View Figures 165–168 )

Type material. Holotype ( Figs 63 View Figures 63–75 , 130 View Figures 130–133 ): male, “ Rwanda | Nyungwe | 23.X.[19]76 | B. Turlin [leg.] | 2000m ” / “ Slide | ZSM Arct. | 2021- 524♂ | A. Volynkin ” ( ZSM).

Paratypes (2 males, 2 females, all in ZSM). RWANDA : 1 female, same data as in holotype but 23.x.[19]76, gen. slide No. : ZSM Arct. 2021- 528♀ (prepared by A. Volynkin ) ; 1 male, Nyungwe, Rte [Route] Delvaux, B. Turlin [leg.], 2200m, 7.v.[19]75, gen. slide No. : ZSM Arct. 2021- 527♂ (prepared by A. Volynkin ) ; 1 female, Forêt Nyungwé, Route Delvaux km 16, 2000m – 15.4.1977, B. Turlin [leg.], gen. slide No. : ZSM Arct. 2021- 526♀ (prepared by A. Volynkin ) ; 1 male, Nyungwe, 29.xi.[19]75, B. Turlin [leg.].

Diagnosis. The forewing length is 16.5–18.0 mm in males and 20.0–21.0 mm in females. The species has two colour forms occurring in the same season. The contrast form ( Figs 63, 65 View Figures 63–75 ) can be easily distinguished from other species in the genus Architesma by its forewing having ochreous distal and basal areas while the medial area is intensely suffused with dark brown. The unicolorous, brown form with diffuse forewing markings ( Figs 64, 66 View Figures 63–75 ) is reminiscent of A. nouabaleana sp. n. but its forewing has a more tapered apex and a less convex outer margin. The male genital capsule structure of A. turlini sp. n. is similar to A. bassa sp. n. but differs in the proximally broader uncus, the ventrally directed ampulla with an upcurved distal end (the ampulla of A. bassa sp. n. is smoothly medially downcurved), and the longer sacculus with longer basal and distal processes. Compared to A. bassa sp. n., the phallus of A. turlini sp. n. has a larger and more downcurved coecum, a considerably more prominent subdistal ventral protrusion, and a slightly longer ventral carina. In the vesica, A. turlini sp. n. has a markedly larger dorsal diverticulum, a somewhat longer, medially narrower and almost straight distal diverticulum, and a larger, thorn-shaped terminal cornutus (it is reduced and plate-like in its congener). The female genitalia of A. turlini sp. n. can be readily distinguished from A. bassa sp. n. by the longer and broader postvaginal formation with broad and heavily sclerotised lateral plates, the considerably shorter and narrower antevaginal plate with a posterior margin protruding posteriorly and partially covering the ostium bursae (whereas the antevaginal plate of A. bassa sp. n. has a broad, V-shaped posterior depression), and the shorter and anteriorly broader posterior section of the corpus bursae.

Distribution. The new species is currently known from Nyungwe Forest in Rwanda. Etymology. The new species is named after the renowned French lepidopterist and collector of the type series, Dr Bernard Turlin. The name is a noun in the genitive case.