Ommatoiulus camurus Akkari & Enghoff, 2017, sp. nov.

Ommatoiulus camurus sp. nov.

urn:lsid:zoobank.org:act:73D3CA71-7B9F-41B9-AA27-029C24F12E0D

Figs 6–8

A large species. Most similar to O. armatus (Verhoeff, 1910) and O. dorsovittatus (Verhoeff, 1893), agreeing with these in the presence of a lateral notch on the promerite, a curved bifurcate mesomerite and a reduced paracoxite. Differing from both in the modified apex of the promerite, the deep curvature of the mesomerite and the shape of the solenomerite.

The species epithet is a Latin adjective meaning curved and refers to the strongly curved shape of the posterior gonopods.

PORTUGAL: 1 ♂, Faro District, Algarve, Cape St. Vincent, 2 Mar. 1981, D. Kime leg. (ZMUC).

PORTUGAL: 2 ♀♀, same data as holotype.

Description

MEASUREMENTS. Male: L = 45 mm, H = 5 mm, 45 PR+2 AR+Telson. Females: L = 35–47 mm, H = 4.5–6.1 mm, 41 PR+3 AR+Telson.

COLOUR. After 35 years in alcohol (Fig. 6). Prozonites uniformly light grey perhaps with faded marbling, metazonites anteriorly pale, dominated by a strong reddish brown colour with dense black sputter posteriorly and showing a striking yellow band on the posterior margin, a thin black mid-dorsal line; legs brownish; head dark brown, mouthparts lighter, antenna dark brown; telson and anal valves brownish. Prozonites with oblique striae; metazonites with regular striation; suture complete, rectilinear but sometimes with a sinus at ozopore level. Anal valves with a marginal row of short setae, a submarginal row of longer ones, disc glabrous (setae broken?); subanal scale triangular, clearly protruding and setose; preanal process broken on all specimens.

GONOPODS (Figs 7–8). Promerite (P) in posterior view broad at the base, gradually narrowing distad, lateral margin expanded and rounded, distally incised in a rounded notch; mesal ridge (Mr) broad and fusing with the mesal margin; promerite apex marked with a fold with a strongly sclerotized and serrated process on the mesal margin, and a subapical notch on the lateral one; rudimentary telopodite (T) small, located basally, close to the mesal ridge. Posterior gonopod: mesomerite (Ms) broad, hookshaped and strongly curved, distally bifurcating into two thin asymmetrical and downturned processes pointing meso-basad; solenomerite (S) much shorter than Ms, bearing strong serrations on the anterior and apical margin and fringed with a large number of spikes, and a thin acuminate mesal process (Sm) pointing distad; posterior process of the solenomerite (Sp) showing an acute tip lodging the opening of the seminal groove 'og'; seminal groove (g) running posteriorly from the fovea (F) located at the base of the solenomerite up along Sp and opening in og (Figs 7 D, 8B); paracoxite (Px) reduced, emerging from a bipartite round coxa (Cx) (Figs 7 D, 8B–C).

South Portugal, Algarve.