Herniosina horrida ( Rohacek , 1978)

Rohacek, Jindrich, 2016, Herniosina Rohacek: revised concept, two new species, new key and atlas of male and female terminalia (Diptera, Sphaeroceridae), ZooKeys 609, pp. 69-106 : 82-83

Taxon classification Animalia Diptera Sphaeroceridae

Herniosina horrida ( Rohacek, 1978) Figs 27-30

Limosina horrida Roháček, 1978: 51 [both sexes, illustr.]. Type locality: Slovakia, Veľká Fatra Mts., Suchá dolina (valley). - Papp 1984: 99 [Palaearctic catalog].

Herniosina horrida. - Roháček 1982: 265-266 [illustr.]; 1983: 20 [generic combination; redescription, phylogenetic notes]; 1993: 191 [key]; Roháček et al. 2001: 149 [catalog].

Type material.

Holotype ♂ labelled: "Slovakia centr. 27.6.1975, V. Fatra, Suchá dolina, J. Roháček leg., decayed hay" (handwritten) and " Limosina horrida sp.n., J. Roháček det., holotypus ♂" (framed handwriting), deposited in JRO ((intact, in ethanol). Allotype ♀ (JRO) and 7♂11♀ paratypes (all in ethanol, some with genit. prep.), with the same data, deposited in JRO and HNHM. For data of other paratypes (7♂18♀, JRO, SMOC) from the Czech Republic and Slovakia see Roháček (1978, 1983).

Other material examined.

18♂32♀ - AUSTRIA: 1♂2♀ (NHMW), for localities see Roháček (1993). CZECH REPUBLIC: 2♂17♀ (JRO, MBP, SMOC, UEBC), for localities see Roháček (1980, 1983, 1984, 1993, 1996); additional data: N Moravia: Vidnava env. (distr. Šumperk), sweeping undergrowth of deciduous forest, 10.vii.1984, 1♀; Hrubý Jeseník Mts, Velká kotlina valley, on excrement of red deer, 20.vi.1990, 1♂; Dlouhá Stráň env. (distr. Bruntál), mouth of muskrat ( Ondatra ) burrow, 6.v.1987, 1♀; Karlova Pláň-Karlovec (distr. Bruntál), sweeping undergrowth of alder forest, 27.v.1987, 1♀; Karlova Pláň-Volárenský potok (distr. Bruntál), sweeping undergrowth of alder forest, 20.vii.1987, 1♀, all J. Roháček leg. (SMOC). SLOVAKIA: 15♂13♀ (JRO, SMOC, UKB), for localities see Roháček (1983, 1986, 1993, 1995, 2009, 2011).

Diagnosis.

Body length: male 2.06-2.46 mm, female 2.20-2.90 mm. Male: abdomen with T5 and S8 somewhat shorter than in Herniosina bequaerti ; S1+2 strongly bulging; S5 with a pair of small, shortly digitiform processes (Fig. 36); epandrium with a long dorsolateral seta (Fig. 28); cerci long, with 2 projections (Figs 28, 30), medial blunt and half-length of lateral, lateral tapered distally, with sinuate outer margin (Fig. 30) and long curved seta; gonostylus with roundly lobate posteroventral part and with slender elongate subdorsal internal projection (Fig. 29); hypandrial rod relatively short and slender (Fig. 28); phallapodeme also short, without dorsal keel (Fig. 27); postgonite relatively long, sinuate, with apex bent medially; distiphallus with longer lateral and ventral lobes and slender funnel-shaped apex (Fig. 27). Female: postabdomen slender, with relatively narrow sclerites of 6 th– 8th segment (Figs 32-34); T8 complete but medially narrowly paler-pigmented (Fig. 32); S8 relatively large, simple, transversely suboval (Fig. 33); spermathecae pyriform with conical base (Figs 31, 35); S10 undivided, horseshoe-shaped (Fig. 33); cerci long and slender (Figs 32-34).

Biology.

The species is associated with decayed herbaceous vegetation, most of known specimens having been collected from decayed leaves, hay, grass ( Roháček 1978, 1983) in forests or their margins, in cold montane valleys also in open, unforested habitats; they can be also captured by soil traps in these habitats ( Roháček 1980). Grundmann (1991) collected a series by Barber traps. Only occasionally it can be found in forests on excrement, rotting fungi ( Roháček 1993), in runs of voles ( Roháček 2009) and recently was also found in entrances of caves ( Roháček 2011). Despite the latter record, the statement by Roháček (1983) that it has never been collected in caves together with Herniosina bequaerti remains to be correct. However, Herniosina horrida could possibly co-occur with Herniosina pollex in mouths of caves or in ravines but hitherto I cannot confirm this presupposition by records. Adults were recorded in March to August.

Distribution.

Only known from Central Europe (Austria, Czech Republic, Germany, Slovakia). The record from Germany ( Grundmann 1991; cf. also Roháček 1993) was erroneously attributed to Herniosina pollex in the World catalog of Sphaeroceridae ( Roháček et. al 2001).