Chelotrupes hiostius ( Gené, 1836 ), Dellacasa & Dellacasa, 2008

Dellacasa, Marco & Dellacasa, Giovanni, 2008, Revision of the genus Chelotrupes Jekel, 1866 n. stat. (Insecta, Coleoptera, Geotrupidae), Zoosystema 30 (3), pp. 629-640 : 632-634

Chelotrupes hiostius ( Gené, 1836) n. comb.

( Figs 1A, D, G, J ; 2A )

Geotrupes hiostius Gené, 1836: 187 . — Marseul 1867: 54. — Harold 1869: 1082. — Bargagli 1872: 283. — Bertolini 1899: 62; 1904: 62.

Ceratophyus hiostius – Sturm 1843: 113.

Geotrupes (Minotaurus) hiostius – Marseul 1863: 122. — Reitter 1883: 97.

Geotrupes (Chelotrupes) hiostius – Jekel 1866: 550.

Geotrupes (Typhoeus) hiostius – Reitter 1891: 184.

Ceratophyus (Minotaurus) hiostius – Reitter 1893: 9.

Ceratophyus (Typhoeus) hiostius – Reitter 1906: 725.

Typhoeus (Chelotrupes) hiostius – Boucomont 1912: 22. — Luigioni 1929: 390. — Winkler 1929: 1036. — Crovetti 1970: 235. — Carpaneto & Piattella 1995: 4.

Ceratophyus (Chelotrupes) hiostius – Porta 1932: 401.

Typhoeus hiostius – Baraud 1992: 49.

TYPE MATERIAL. — 1 ♂ neotype (here designated) ( MRSNT), bearing the following labels:1) yellow, printed: “1 / 37”; 2) white, printed: “ Sard[inia].”; 3) red, printed: “ Geotrupes / hiostius / Gené, 1836 / NEOTYPUS / Des. Dellacasa, 2005”.

TYPE LOCALITY. — Sardinia, Italy.

ETYMOLOGY. — Named in honour of Hiostius [Hostius], son of Ampsicora, hero of Sardinian resistance to Roman invasion.

MATERIAL EXAMINED. — Sardinia. Sard. [Sardinia], 1 ex. (MRSNT).— Sardegna, 2 ex. (MCSNG-BC).— Sardinia, I.1837, 1 ex. (MSNTC). — Sardinia, leg. Damry, 3 ex. (MNHN).

Cagliari province, 7-fratelli, leg. U. Lostia, 1 ex. (MCSNG-DC).

Carbonia-Iglesias province,Carloforte, leg. A.Dodero, 3 ex. (MCSNG -MC); 1 ex. (MNHN). — Idem , 27.IV.1902, leg. A.Dodero, 9 ex. (MCSNG -DC). — Idem , 27.IV.1902, leg. A. Dodero, 3 ex. (MCSNG -BC). — Idem , 20.V.1892, leg. A. Dodero, 3 ex. (MCSNG -DC). — Sant’Anna Arresi, Cala Sa Barracca (o Portu Su Trigu), 5-48 m, 3.XII.1998, leg. C. Meloni, 1 ex. (coll. CM). — Spiaggia di Portixeddu (Fluminimaggiore-Buggerru), 17.I.1984, leg. P. Leo, 1 ex. (coll. PL). — Idem , 7.II.1984, leg. P. Leo, 1 ex. (coll. PL).

Medio Campidano province, Arbus, loc. Piscinas di Ingurtosu, 5.III.2001, leg. Lisa, 3 ex. (coll. SZ). — Costa Verde, Marina di Arbus dint., 39°33’51.0”N, 08°27’48.6”E, 50 m, 13.III.2005, leg. M. Dellacasa & C. Fresi, 8 ex. (coll. MD). — Idem , 1.X.2005, leg. M. Dellacasa & C. Fresi, 1 ex. (coll. MD). — Idem , 29.X.2005, leg. M. Dellacasa & C. Fresi, 13 ex. (coll. MD). — Duna di is Arenas-s’Acqua e s’Ollastu (tra Punta s’Aschivoni e Torre di Flumentorgiu), 11.XI.1993, leg. P. Leo, 2 ex. (coll. PL). — Giara di Gesturi, 30.VI.1987, leg. M. Arnone, 2 ex. (MCSNG). — Marina di Arbus , 26.IV.1995, leg. P. Leo, 1 ex. (coll. MD). — Idem , 26.IV.1995, leg. P. Leo, 11 ex. (coll. SZ). — Marina di Arbus , foce Rio Piscinas, 26.IV.1995, leg. P. Leo, 8 ex. (coll. PL).— Idem , 4.V.1999, leg. P. Leo, 19 ex. (coll. PL). — Idem , 19.X.1979, leg. L. & R. Pittino, 6 ex. (coll. RP). — Idem , 24.X.1994, leg. P. Leo, 4 ex. (coll. PL). — Idem , 8/ 17.XI.2002, leg. P. Leo, 362 ex. (coll. PL).

Nuoro province, Macomer, Stagno di Bara, 660 m, 25.III.1979. leg. C. Meloni, 1 ex. (coll. SZ).

Ogliastra province, Villanova Strisaili, 29.IV.1872, leg. R. Gestro, 1 ex. (MCSNG).

Oristano province, Monte Arci, 6.XII.1983, leg. Fancello, 1 ex. (MCSNG). — Oristano, Monte Ferru, 350 m, 30.IV.1979, leg. S. Riese, 2 ex. (MCSNG). — Oristano, Pen. del Sinis, 26.IV.1978, leg. S. Riese, 2 ex. (MCSNG). — San Giovanni di Sinis, 17.XI.1988, leg. C. Meloni, 1 ex. (coll. SZ). — Idem , 21.XI.1986, leg. C. Meloni, 3 ex. (coll. SZ).

DISTRIBUTION. — Known only from Sardinia ( Fig. 3 ). We examined one specimen in MNHN labelled “ Grèce ”, the locality needs to be confirmed.

BIONOMICS. — Flightless telocoprid species present all year round, distributed from the sea level to high hills.

DESCRIPTION

Length 13.5-26.0 mm, very stout, strongly convex, almost glabrous, upper face entirely with metallic shine. Blackish, antennae and legs black.Head with epistoma broadly rhomboidal, with median longitudinal gibbosity more or less raised and coarsely, densely punctate; clypeus broadly triangular, widely rounded at anterior angle, very thinly margined, the edge almost sparsely ciliate and distinctly raised distally; genal sutures sharply cariniform,strongly raised;genae widely rounded; front smooth or sparsely punctate on disc, distinctly punctate laterally. Pronotum strongly transverse, moderately convex, with deep anteromedian rounded foveola on sides; the latter arcuate, thinly margined, the edge almost densely ciliate; hind angles widely rounded; base thinly margined, slightly inwardly sinuate.Scutellum broadly triangular, slightly grooved at middle. Elytra very short, strongly convex, narrowly flattened before the epipleural carina; the latter sparsely and almost elongately ciliate; humeral callus strongly gibbous; striae very superficial, nearly obsolete, almost imperceptibly punctate; intervals flat, smooth. Fore tibiae apical spur distinctly curved apically. First segment of hind tarsi as long as following three combined.

Male: epistoma glabrous, with feeble median longitudinal gibbosity, regularly punctate on disc, punctation distally more coarse and subrugose; pronotum laterally with few very fine punctures toward front angles, anteriorly with three hornlike apophyses, the lateral ones straight, subparallel, somewhat curved apically only, narrowly rugose from apex almost to base, anteriorly projected from the anterior angles; the central apophysis almost elongate, acuminate, distinctly upturned; aedeagus illustrated on Figure 2A .

Female: epistoma shortly pubescent on disc, with median longitudinal gibbosity subtuberculiform at top, confusedly, coarsely, granulosely punctate; pronotum irregularly moderately coarsely punctate on sides, smooth on disc; strongly excavate anteriorly; front angles very distinct, obtusely rounded, anteriorly projected, not outwardly curved; at each side foveolate and with an outer tooth moderately raised; antero-median carina short, distinctly raised.

REMARKS

Horn & Kahle (1935) as well as Conci (1969) reported that the Gené’s Coleoptera from Sardinia were preserved in the Zoological Museum of Turin University then aggregated to the “general collection” of Museo regionale di Scienze naturali of Turin. Checking the Geotrupidae material at present stored in this collection, we have not found any specimen of Chelotrupes hiostius n. comb. In the P. Savi’s collection of the Museo di Storia Naturale e del Territorio of Pisa University are present several specimens of Gené’s collection but no specimens of C. hiostius n. comb. can be found. Since the Gené type material has to be considered lost, we have designated as neotype a specimen from the Baudi collection. In the original description Gené recorded as type locality “in viis atque in sabuletis frequentissimus, praesertim in peninsula di Sant’Antioco, m. aprili”.Notwithstanding the specimens preserved in Baudi collection bear a label reporting “Sard.” only, we have chosen among them the neotype because they were utilized by Baudi when describing his species Geotrupes matutinalis for discriminating it from the taxon of Gené.

Figures

FIG. 1. — A-C, heads; A, Chelotrupes hiostius (Gené, 1836) n. comb.; B, C. matutinalis (Baudi, 1870) n. comb.; C, C. momus (Olivier, 1789) n. comb.; D-F, pronotum of the male; D, C. hiostius n. comb.; E, C. matutinalis n. comb.; F, C. momus n. comb.; G-I, pronotum of the female; G, C. hiostius n. comb.; H, C. matutinalis n. comb.; I, C. momus n. comb.; J-L, elytra; J, C. hiostius n. comb.; K, C. matutinalis n. comb.; L, C. momus n. comb.

FIG. 2. — Aedeagus in dorsal view: A, Chelotrupes hiostius (Gené, 1836) n. comb., Costa Verde, Marina di Arbus dint., 39°33’51.0”N, 08°27’48.6”E; B, C. matutinalis (Baudi, 1870) n. comb.,Costa Verde,Marina di Arbus dint., 39°33’51.0”N, 08°27’48.6”E; C, C. momus (Olivier, 1789) n. comb., Andalusia, Cadiz, Tarifa. Scale bar: 1 mm.

FIG. 3. — Distribution in Sardinia (Italy) of Chelotrupes hiostius n. comb. (■) and C matutinalis n. comb. (▲). ○, sympatry of C. hiostius n. comb. and C. matutinalis n. comb.