Limnephilus bercalan, Sipahiler, 2024

Sipahiler, Füsun, 2024, The Limnephilus bipunctatus Species Group in Turkey with the descriptions of two new species (Trichoptera, Limnephilidae), Zootaxa 5406 (1), pp. 105-122 : 117

Limnephilus bercalan sp. n.

( Figs 37–40 )

Material. Holotype: Turkey, Hakkari, Berçalan Yaylası , 2550 m, 37º38´N, 43º46´E, 17.viii.1981, 1 male, (CD: R-73), leg. Kazanci, coll. Sipahiler.

General description. Antennae, maxillary palps and legs brown; anterior wings narrow, nearly uniform brown, only pterostigma somewhat darker; post-costal area slightly spotted ( Fig. 1D ). The length of each forewing of male 11 mm (n = 1).

Male genitalia ( Figs 37–40 ). In dorsal view, spinulose zone of tergite VIII subelliptically trapezoidal in shape, its spines sparse. Preanal appendages, in lateral view, 2/3 as tall as long, oval. In lateral view, intermediate appendages slender from mid-length, triangular, and narrowing toward tip, with small apex curved anterodorsad; in dorsal view, gradually curved laterad from base. Supragenital plate membranous, dorsally large and rounded. Inferior appendages large, in lateral view almost as broad (long) as lateral regions of segment IX, with posterior edge rounded, apex pointed and darkly sclerotized. Parameres of phallic apparatus in lateral view foliaceous; laterally one seta and two setae at base of dorsal edge; dorsal edge with thirteen setae and ventral edges with fourteen setae which become longer through apical end.

The female is unknown.

Remarks. Limnephilus bercalan sp. n. is a rather small species with each forewing 11 mm. It differs from the other species of the L. bipunctatus Species Group by the shape of the spinulose zone of tergite VIII which is subelliptically trapezoidal and has sparse spines; other parts of the genitalia resemble those of L. caucasicus but the following differences can be seen: In L. caucasicus segment IX is larger [2.5 times as broad (longitudinally long) as its inferior appendages in lateral view] than that of L. bercalan sp. n.; in L. caucasicus the intermediate appendages are broad at the base, in lateral view, each with only the apical 1/3 being narrow and the basal 2/3 broad, but the apical half is narrow in L. bercalan sp. n.

Figures

FIGURE 1. Right forewings of Limnephilus spp., dorsal. 1A, L. bipunctatus Curtis 1834; 1B, L. transcaucasicus Martynov 1909; 1C, L. bayburt sp. n.; 1D, L. bercalan sp. n.; 1E, L. malickyi Sipahiler 1992; 1F, L. caucasicus Schmid 1955.

FIGURES 37–40. Male genitalia of Limnephilus bercalan sp. n. 37, left lateral; 38, dorsal; 39, caudal; 40, phallicata and left paramere (paired), left lateral. Abbreviations: ia = intermediate appendage (paired); inf = inferior appendage (paired); pa = preanal appendage (paired); par = paramere (paired); sap = supragenital plate; sz = spinulose zone of tergite VIII.