Iberina difficilis ( Harm, 1966 )

Růžička, Vlastimil, 2022, A review of the spider genus Iberina (Araneae, Hahniidae), Zootaxa 5133 (4), pp. 555-566 : 559-560

Iberina difficilis ( Harm, 1966)

Figs. 3E , 4E , 5E .

Hahnia difficilis Harm, 1966 — Harm (1966): p. 356, Figs. 29–35 (descr. ♂ ♀); transferred by Lehtinen (1967).

Iberina difficilis — Lehtinen (1967): p. 240.

I. difficilis — Ledoux (2014): p. 34, Fig. 10.

Material examined. Owing to the indistinguishability of males of I. difficilis and I. montana , only material containing females is considered. SWITZERLAND, Son Cassian, 9 Jun–27 Jul 2003, 1 ♂ 2 ♀ ( NMB, ARAN 25962 ) • Grindelwald , Adelboden, 2 ♂ 1 ♀, sub I. montana , misidentification ( NMB, ARAN 02003 a) • CZECHIA: Srní— Horská Kvilda , Jezerní Slať Reserve, 1060 m a.s.l., 29 Jun?, 2 ♂ 2 ♀, leg. F. Miller ( NMP, P6A 755 /1) • Horní Planá — Pernek, 770 m a.s.l., 30 Jul 1956, 2 ♂ 2 ♀, leg. F. Miller ( NMP, P6A 755 /2) • Zlaté Hory , Rejvíz Reserve, 770 m a.s.l., 25 Sep?, 2 ♂ 2 ♀, leg. F. Miller ( NMP, P6A 755 /6) • Borová Lada, 17 Sep 1985, 2 ♀, leg. A. Kůrka • Zaječov, former military training area Jordán, 49.7230°N, 13.8623°E, 810 m a.s.l., 29 Mar–15 Aug 2017, 3 ♂ 1 ♀, leg. K. Tajovský & V. Pižl • Obecnice, former military training area Tok, 49.709°N, 13.880°E, 810 m a.s.l., 17–21 Jul 2017, 2 ♂ 2 ♀, leg. R. Tropek ( IECA) • Jílové—Sněžník , 26 Jun 1998, 1 ♀, leg. E. Kula ( CVB) • Liberec , Černá Hora Mt., 11 Jun–15 Sep 2018, 1 ♂ 3 ♀ • Hejnice (distr. Liberec), Zelený Kámen Mt., 8 Jun—12 Sep 2018, 2 ♂ 3 ♀ • Desná, Bukovec Mt., 15 Aug–2 Sep 2018, 3 ♀ • Harrachov, Mrtvý Vrch Mt., 7 Jul–11 Aug 2019, 1 ♂ 1 ♀, leg. P. Vonička ( CAK) .

Description. ♀ (from Horní Planá, Czechia). CW 0.60 mm. The carapace is yellow brown with blackish fovea and radiating striae, and the abdomen is blackish grey with chevrons. Leg measurements: I: 2.01 (0.60, 0.23, 0.43, 0.38, 0.37); II: 1.82 (0.56, 0.22, 0.36, 0.35, 0.33); III: 1.65 (0.48, 0.17, 0.35, 0.34, 0.31); IV: 2.28 (0.65, 0.22, 0.51, 0.50, 0.40). Epigyne: the spermathecae are indistinct, hardly visible. Vulva: the primary spermathecae are separated by a space broader than their diameter, and secondary spermathecae are greatly reduced, hardly visible ( Fig. 5 E ).

♂ (from Horní Planá , Czechia). Palpal femur with three spines on the ventral side ( Fig. 2O ). The tibial apophysis starts with conical narrowing of the tibia and has cuttings ( Fig. 3E ). The tip of the cymbium is rounded ( Fig. 4E ) .

Ecology. In peat bogs, heathlands and other open, wet habitats, mainly in higher altitudes.

Geographic distribution. Europe.

Figures

FIGURE 2. Hahnia pusilla from Police nad Metují, Czechia (A–E). Hahniharmia picta from Lednice, Czechia (F–K). Iberina difficilis from Horní Planá, Czechia (L–O). A, F, L—♀ carapace, profile. B, G, M—♀ carapace, dorsal view. C, H, N—♂ palpal patella. D, I—♂ palpal tibia. E, J—♂ bulbus. The outline of transparent median apophysis (ma) in H. pusilla is marked by a hair line. O—♂ palpal femur. K—♀ epigynum. Scale bars, 0.1 mm.

FIGURE 3. Male palpal tibia. A—I. mazarredoi from S. Roque de Riomiera, Spain. B—Iberina microphthalma from Raná, Czechia. C—I. candida from Radotín, Czechia. D—I. montana from Hüls bei Krefeld, Germany. E—I. difficilis from Horní Planá, Czechia. Scale bars, 0.1 mm.

FIGURE 4. Male palp. A—Iberina mazarredoi from S. Roque de Riomiera, Spain. B—I. microphthalma from Raná, Czechia. C—I. candida from Pretzfeld, Germany. D—I. montana from Hüls bei Krefeld, Germany. E—I. difficilis from Horní Planá, Czechia. Scale bars, 0.1 mm.

FIGURE 5. Female vulva. A—Iberina mazarredoi from Galzames, Spain. B—I. microphthalma from Jenišovice-Mravín, Czechia. C—I. candida from Streitberg, Germany. D—I. montana from Hüls bei Krefeld, Germany. E—I. difficilis from Horní Planá, Czechia. Scale bars, 0.1 mm.