Rhyacophila fasciata viteceki Valladolid & Kučinić, 2020

Valladolid, María, Kučinić, Mladen, Arauzo, Mercedes, Cerjanec, Darko, Ćuk, Renata, Dorda, Beatriz A., Lodovici, Omar, Stanić-Koštroman, Svjetlana, Vučković, Ivan & Rey, Isabel, 2020, The Rhyacophila fasciata Group in Croatia and Bosnia and Herzegovina: Rhyacophila f. fasciata Hagen 1859 and the description of two new subspecies, Rhyacophila fasciata delici Kučinić & Valladolid (ssp. nov.) from Croatia and Bosnia and Herzegovina and Rhyacophila fasciata viteceki Valladolid & Kučinić, Zootaxa 4885 (1), pp. 51-75 : 65-66

Rhyacophila fasciata viteceki Valladolid & Kučinić (ssp. nov.)

This subspecies has been found in Bosnia and Herzegovina.

Etymology. The specific name is the genitive of Vitecek, given in honour of Dr. Simon Vitecek, biologist and trichopterologist of Wasser Cluster Lunz, Lunz am See, Austria.

Type material. Holotype ♂: BOSNIA AND HERZEGOVINA, river Neretva , Bačevići (43.254154º N 17.824627º E, 35 m a.s.l.), 30/vi/17 (Stanić-Koštroman & M. Kučinić) [N1, MNCN _ Ent 269367 ( MNCN)].

Paratypes: 2 ♂, same locality as holotype, 30/vi/17 (Stanić-Koštroman & M. Kučinić) [N2, no. 4455, ( MCK) and N3, no. 1111 ( UMBH)]. 2 ♂ and 1 ♀, river Sturba , 30/viii/18 (M. Kučinić) [1 ♂, S1, MNCN _ Ent 269368 ( MNCN); 1 ♀, S3, MNCN _ Ent 269369 ( MNCN); 1 ♂ S2, no. 4456 ( MKC)]. 1 ♂, river Bunica, 04/vi/17 (StanićKoštroman & M. Kučinić) [B1, no. 1112 ( UMBH)] .

Description of the imago. Holotype (N1): Length from front of head to distal edge of segment IX 8.91 mm, each forewing 12.55 mm, each hind wing 10.54 mm.

Males: Length 8.29–9.21 mm (x = 8.72, n = 6), each forewing 9.83–12.55 (x = 11.34, n = 6), each hind wing 8.85–10.54 mm (x = 9.79, n = 6).

Female: Length from front of head to distal edge of segment VIII 11.26 mm (n =1), forewing 14.52 mm (n = 1), hind wing 12.15 mm (n = 1).

In ethanol-preserved specimens colour generally pale brown, yellowish, with golden brown setae. Head, thorax, and abdomen dorsally pale brown, with small dark brown spots in dorsal area, some specimens in lateral view with long black spots marking borders between dorsal and ventral areas, abdomen ventrally yellowish; female darker than male, anterior 2/3 of abdominal segments pale brown or brown in darker specimens. Legs light, with spurs reddish brown. Forewings brown, spotted; hind wings pale.

Male genitalia ( Figs 3 , 6 a–6e): Apical segment of each inferior appendage ( Figs 3A , 6a ) with basal and distal edges diverging, posterior edge oblique and slightly convex, ventral edge straight to slightly concave, at least two times longer that dorsal edge. Apicodorsal vertex angular, apicoventral angle projecting as thick lobe narrowing progressively to round apex ( Fig 6a ).

Parameres ( Figs 3 BV–3BL, 6c–6d) in ventral view curved posteromesad in apical 2/3 ( Figs. 3 BV p, 6c). In lateral view ( Figs. 3 BL, 6d) each slender at base, slightly dilated in middle, with rounded dorsal margin before midlength and almost straight ventral margin at midlength, pointed at apex; row of few thick spines on midventral margin ( Figs 6 c–6d); midlateral surface covered by very fine spicules or setae, reaching from anteroventral to posterodorsal edges of paramere, absent from dorsal edge.

Aedeagus (phallicata) in lateral view ( Figs 3 CL, 6e) with dorsal margin deeply concave and posterior corner of concavity hooked anterad; upper posterior edge concave to obliquely truncate apex, ventral edge sinous. Lateroventral lobes of phallus ( Fig. 3 CD lvl) convex, narrowing progressively towards apex, apicolateral margins round, posteromesal edge of each lobe concave. Ventral lobe of aedeagus nearly round, tapering and acute caudally ( Fig 3 BV vl).

Apicodorsal lobe of segment IX ( Figs 3 DD, 6b) slightly dilated subapicolaterally, posterior edge semicircular, lateral edges converging anterad; preanal appendages (fig 3DD pa) shorter than apicodorsal lobe ( Fig 3 DD al), obliquely subtruncate apicolaterally, with slightly concave posteromesal edges ( Figs. 3 DD, 6b). In ventral view, apical band V-shaped, inner and outer edges converging in posterior third, pointed apically, longer than wide ( Fig 3 DV ab); posterior edge of non-sclerotized ventral area slightly concave, with small mesal incision ( Fig 3 DV va), anal sclerites subtriangular, concave apically ( Fig 3 DV as).

Figures

FIGURES 3, 4. Male and female genitalia of Rhyacophila fasciata viteceki Valladolid & Kučinić ssp. nov. 3, male: 3A, 2nd segment of left inferior appendage, left lateral; 3BV–3BL, parameres: 3BV, parameres (p) and ventral lobe of aedeagus (phallicata) (vl), ventral; 3BL, left paramere, left lateral. 3CL–3CD, aedeagus (phallicata) and lateroventral lobes: 3CL, aedeagus and ventral lobe, left lateral; 3CD, aedeagus and lateroventral lobes (lvl), dorsal. 3DD, apicodorsal lobe of segment IX (al) and preanal appendages (pa); 3DV, segment X, ventral, ab = apical band, as = anal sclerites, va = non-sclerotized ventral area. 4, female segments VIII–XI: 4L, left lateral; 4D, dorsal; 4V, ventral. Scale bars: unlabelled = 1 mm; circle = 0.5 mm; asterisk = 250 µm.

FIGURES 5–7. Male genitalia of Rhyacophila spp. 5, R. fasciata delici Kučinić & Valladolid ssp. nov. 6, R. fasciata viteceki Valladolid & Kučinić ssp. nov. 7, R. f. fasciata Hagen, 1859. 5a–7a, 2nd segment of left inferior appendage, left lateral; 5b–7b, apicodorsal lobe and preanal appendages, dorsal; 5c–7c, parameres and aedeagus (phallicata), ventral; 5d–7d, left paramere, left lateral; 5e–7e, aedeagus (phallicata) and ventral lobe, left lateral. Scale bars: a–c = 0.5 mm, d–e = 250 µm.