Dilar fuscus, Aspoeck, Ulrike, Liu, Xingyue & Aspoeck, Horst, 2015

Aspoeck, Ulrike, Liu, Xingyue & Aspoeck, Horst, 2015, The Dilaridae of the Balkan Peninsula and of Anatolia (Insecta, Neuropterida, Neuroptera), Deutsche Entomologische Zeitschrift 62 (2), pp. 123-135 : 126-128

Taxon classification Animalia Neuroptera Dilaridae

Dilar fuscus sp. n. Figs 26, 27-28, 29-30

Diagnosis.

This species is characterized by the entirely brown wings without distinct markings (at least in the female).

Description.

Female. Length of forewing 10.9-12.2 mm, of hindwing 9.9-11.2 mm.

Head brown, with three pale yellow setose tubercles; vertex medially with a blackish brown vittae. Compound eyes blackish brown. Antenna with ca. 25 segments, pale brown.

Prothorax blackish brown, pronotum with pale yellow anterior margin and several yellowish tubercles clothed with brownish hairs; mesothorax and metathorax blackish brown, dorsally yellow at middle. Legs yellowish brown, with each segment blackish brown at tip. Wings entirely brown, without distinct markings. Forewing ~2.5 times as long as wide, with distal half slightly paler; proximally with two or three nygmata, medially with one nygma, which is slightly larger than proximal ones. Hindwing slightly paler than forewing; one nygma present at middle. Veins brown; Rs with six main branches on both fore- and hindwings.

Abdomen pale brown. Ovipositor pale yellowish brown. Seventh sternite in lateral view subtriangular. Eighth abdominal segment without subgenitale. Basal part of bursa copulatrix sac-like, subtriangular in ventral view, most parts membranous and strongly rugose, with ventrolateral portions slightly sclerotized anteroposteriad. Ectoproct rather small, ovoid.

Male. Unknown.

Type material.

Holotype ♀, "Prov. AYDIN, Str., Nazilli-Beydağ, 38.01N / 28.18E, 650 m, 24.V./SUDWEST-ANATOLIEN-EXP, 1981, H. et U. et Ch. ASPÖCK, H. et R. RAUSCH, F. RESSL" (HUAC). Paratypes: 1♀, same data as holotype (HUAC); 1♀, "Prov. AYDIN, Str. Nazilli - Beydag, 38.01N / 28.18E, 650 m, 24.V., SÜDWEST-ANATOLIEN-EXP. 1981, H. et U. et Ch. ASPÖCK, H. et R. RAUSCH, F. RESSL, 81/25" (HRRC); 1♀, "Dilar syriacus ♀ Nav[ ás]. Cotypus, 620/48. Asie min[or]. Coll. Pictet" (MHN).

Distribution.

The only reliable record of Dilar fuscus sp. n. is from the type locality in western Anatolia (Fig. 31).

Etymology.

Adjective, masculine, nominative, singular; an attribute to the genus name. From lat. fuscus 3 = dark. The name refers to the dark coloration of the wings.

Remarks.

Despite the unknown male, Dilar fuscus sp. n. is a spectacular new species and can be easily distinguished from all other species of Dilar based on the entirely brown wings without distinct markings. The female genitalia of Dilar fuscus sp. n. are principally similar to the co-existing species Dilar turcicus based on the basal part of bursa copulatrix with lateral portions slightly sclerotized. It can, of course, not be excluded that the hitherto unknown male has a different coloration of the wing membrane or even a patterned wing membrane. Such kind of sexual dimorphism has been known from other Dilaridae ( Zhang et al. 2015).