Hydrometra gracilenta Horvath 1899
Creators: name: Cianferoni, Fabio
name: Dell'Olmo, Lorella
name: Lastrucci, Lorenzo
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Hydrometridae
Hydrometra
Hydrometra gracilenta

description: Hydrometra gracilenta Horváth, 1899
Hydrometra gracilenta Horváth, 1899. Horváth (1899: 450, “ Austria: Goricia” [now Italy], one of the type localities); Tamanini (1946: 15; clipeus representation); Servadei (1967: 35); Tamanini (1979: 26, Italy, Alpine and pre-Alpine regions: “ Italia [...] regioni alpine e prealpine”; 1982: 75); Rizzotti Vlach and Zerbini (1989: 69); Andersen (1995: 84, “IT [= Italy]”); Faraci and Rizzotti Vlach (1995: 7, “N [=Northern Italy, Tuscany excluded]”); Bacchi and Rizzotti Vlach (1996: 44, 2005: CD-ROM, 2007: CD-ROM); Aukema et al. (2013: 33, “IT [= Italy] (Goricia)”; Aukema (2015, “Italian mainland”).
Hydrometra gracilentus Horváth, 1899. Stichel (1955: 156, Italy: “ Italien ”, 1956: 162, Italy: “It. [= Italien]”); Tamanini (1989: 373, “ Italia settentrionale (Trentino—Alto Adige e Lombardia) ”.
PUBLISHED RECORDS. Lombardy: Merate (LC), Sartirana, Lago di Sartirana, [319 m], [45.716° N, 9.424° E], 1964, CLT (Tamanini 1982: “lago di Sartirana”; Rizzotti Vlach and Zerbini 1989: “Sartirana”; Bacchi and Rizzotti Vlach 2005, 2007: “LC / Madonna del Bosco, Santuario della- (LC) / Lago di Sartirana / Coll. Tamanini / 1964”); [? Castelnuovo Bocca d’Adda (LO)], Fiume Po [? 45.11° N, 9.87° E] (Tamanini 1982: “fiume Po a Castelbuono [sic]”); Mantova (MN), near Bagnolo San Vito (MN), Gradaro, near Chiavica Moro and Corte Barchessina, left bank of the Fiume Mincio and channels, 14 m, [45.06° N, 10.59° E], 1991, 1 ex. (Bacchi and Rizzotti Vlach 1996: “Coord. UTM PQ496969, quota 14 m s.l.m., comune di Mantova, località in prossimità di Corte Barchessina [...] riva sinistra del Fiume Mincio [...] canali”; Bacchi and Rizzotti Vlach 2005, 2007: “MN / Gradaro, Chiávica Moro, Fiume Mincio / Bacchi, Rizzotti Vlach, 1996 / 1991”); Mantova (MN), Formigosa, ex clay pits, 14 m, [45.121° N 10.858° E], 1991-1992, CMR (Bacchi and Rizzotti Vlach 1996: “Coord. UTM PQ457986, quota 14 s.l.m., comune di Mantova, località Formigosa [...] cave di argilla dismesse [1991]”, idem “[1992]”; Bacchi and Rizzotti Vlach 2005, 2007: “MN / Formigosa / Bacchi, Rizzotti Vlach, 1996 / 1991”, idem “/ 1992”,“MN / Formigosa, fiume Míncio / Coll. Rizzotti Vlach / 1991”); Ostiglia (MN), Palude del Busatello (or Palude di Ostiglia), [13 m], [northern part: 45.0962° N, 11.0979° E; southern part: 45.1132° N, 11.1013° E], 1982-1983 (Rizzotti Vlach and Zerbini 1989: “[Palude del Busatello:] margine Nord della palude [...:] specchio d’acqua [... e] Margine Sud della palude [...:] porzione terminale del fiume Busatello [1982]”, idem “[1983]”; Bacchi and Rizzotti Vlach 2005, 2007: “MN / Ostíglia, Palude del Busatello / Rizzotti Vlach, Zerbini, 1989 / 1982”, idem “/ 1983”); Porto Mantovano (MN), Soave, left bank of the Fiume Mincio and channels, 18 m, [45.195° N 10.716° E], 1991-1992 (Bacchi and Rizzotti Vlach 1996: “Coord. UTM PR336038, quota 18 m s.l.m., comune di Porto Mantovano, fraz. Soave. [...] palude [...] riva sinistra del Mincio [...] canali [1991]”, idem “[1992]”; Bacchi and Rizzotti Vlach 2005, 2007: “MN / Porto Mantovano, Soave / Bacchi, Rizzotti Vlach, 1996 / 1991, idem “/ 1992”, “MN / Porto Mantovano, Soave / Coll. Rizzotti Vlach / 1992);
Dubino (SO), Bocca d’Adda, [Riserva Naturale “Pian di Spagna e Lago di Mezzola”], [46.18° N, 9.43° E], 1986, MCMO (Bacchi and Rizzotti Vlach 2005, 2007: “SO / Dubino, Oasi Novate, Bocca d'Adda / Coll. Mus. Civ. St. Nat. Morbegno (Sondrio) / 1986”); Travedona-Monate / Cadrezzate / Osmate / Comabbio (VA), Lago di Monate, [266 m], [45.79° N, 8.66° E], CLT (Tamanini 1982: “lago di Monate”; Rizzotti Vlach and Zerbini 1989: “Travedona”; Bacchi and Rizzotti Vlach, 2005, 2007: “VA / Monate, Lago di- / Lago di Monate / Coll. Tamanini / 1953”). Trentino-Alto Adige: Appiano sulla Strada del Vino (BZ), near Vadena (BZ), Lago di Monticolo, [490 m], [46.423° N, 11.290° E], VIII.1951, 1 ex. brach., CLT (Tamanini 1982: “Vadena, Lago di Monticolo, VIII.51, es. 1 br.”; Rizzotti Vlach and Zerbini 1989: “Appiano”; Bacchi and Rizzotti Vlach, 2005, 2007: “BZ / Vádena, Lago di Montícolo / Tamanini, 1982 / 1951” e “BZ / Lago di Montícolo / Coll. Tamanini / 1951”); Terlano (BZ), Settequerce, near Fiume Adige, [46.50° N, 11.26° E], 17.IV.1927, Hartig leg., 3 ex. brach., CLT (Tamanini 1946: “Bolzano, Settequercie, 17/IV, l. [=legit] Hartig. (M. Tr. [=Museo St. Nat. Ven. Trid., Trento]) [...] f. a. [=forma attera]”; Tamanini 1982: “Settequerce, presso l’Adige, IV.27, es. 3 br. (1. Hartig, c. MT [=Museo Tridentino di Scienze Naturali, Trento])”; Rizzotti Vlach and Zerbini 1989: “Settequerce”; Bacchi and Rizzotti Vlach 2005, 2007: “BZ / Settequerce / Coll. Tamanini / 1927”); Aldeno (TN), drains, [45.97° N, 11.09° E], 27.VIII.1944, L. Tamanini leg., brach., CLT (Tamanini 1946: “Aldeno, canali di scolo, 27/III [...] f. a. [=forma attera: apterous morph; mistake with the brachypterous morph]”; Rizzotti Vlach and Zerbini 1989: “Aldeno”; Bacchi and Rizzotti Vlach 2005, 2007: “TN / Aldeno / Coll. Tamanini / 1944”); Avio (TN), [45.73° N, 10.94° E], 3.IV.1928, A. Brasavola de Massa leg., brach., MCVR (Tamanini 1946: “Avio, Moie, 3/IV, l. [=legit] Bras. [Alb. Brasavola de Massa, Avio [...] f. a. [=forma attera]”; Rizzotti Vlach and Zerbini 1989: “Avio”; Bacchi and Rizzotti Vlach 2005, 2007 “TN / Ávio, Moie / Coll. Mus. Civ. St. Nat. Verona / 1928”); Nomi (TN), Adige Vecchio, [45.926° N, 11.070° E], 25.III.1946, L. Tamanini leg., brach., CLT (Tamanini 1946: “Nomi, Adige vecchio, 25/III [...] f. a. [=forma attera]”; Bacchi and Rizzotti Vlach 2005, 2007: “TN / Nomi, Fiume Ádige / Coll. Tamanini / 1948 [?]”); Fiume Adige, 1946, A. Servadei leg., CAS (Servadei 1967: “Trentino-Alto Adige: [...] Servadei!”; Rizzotti Vlach and Zerbini 1989: “Nomi”; Bacchi and Rizzotti Vlach 2005, 2007: “TN / Nomi, Fiume Ádige / Coll. Servadei / 1946”). Veneto: Altavilla Vicentina (VI), Valle Tramontana, [45.48° N, 11.48° E], 1991, CGT (Bacchi and Rizzotti Vlach 2005, 2007: “VI / Altavilla Vicentina, Valle Tramontana / Coll. Tescari / 1991”); Mossano (VI), Palù, [45.42° N, 11.56° E], 1983, CFB (Bacchi and Rizzotti Vlach 2005, 2007: “VI / Mossano / Mossano, Palù / Coll. Buzzetti / 1983”). Friuli-Venezia Giulia: Gorizia, [45.94° N, 13.60° E], SYNTYPE /S, HNHM (Horváth 1899: “ Austria: Goricia”; Andersen 1995: “IT [= Italy] (Goricia)”; Aukema et al. 2013: “IT [= Italy] (Goricia)”). Emilia-Romagna: Rolo (MO), Coccapana, [44.891° N, 10.876° E], 1997, CIB (Bacchi and Rizzotti Vlach 2005, 2007: “RE / Rolo, località Coccapana / Coll. Bacchi / 1997”); Caorso (PC), [45.05° N, 9.87° E] (Rizzotti Vlach and Zerbini 1989: “Caorso”; Bacchi and Rizzotti Vlach 2005, 2007: “PC / Caorso / Rizzotti Vlach, Zerbini, 1989 ”).
NEW RECORDS. Lombardy: Ponti sul Mincio (MN), [Fiume Mincio], [ab. 70 m], [45.415° N, 10.715° E], 23.III.1974, A. Zanetti leg., 1 ♀ brach., CPD; Roncoferraro (MN), Barbasso, [45.11° N, 10.90° E], 24.IV.1984, P. Cornacchia leg., 1 ♀ brach., CNBFVR. Tuscany: Montignoso (MS), Fossa Fiorentina (tributary channel of the Lago di Porta), 2 m, 43.992° N, 10.170° E, 3.VII.2014, F. Cianferoni, L. Lastrucci & L. Dell’Olmo leg., 1 ♂ brach. (Fig. 1), CFC.
Nomenclatural remarks. According to Stichel (1955), the gender of the genus name Hydrometra is masculine rather than feminine; and consequently the name of this species should be H. gracilentus Horváth, 1899 rather than Hydrometra gracilenta Horváth, 1899. This proposed change seems to have been almost entirely overlooked by subsequent authors, and was rarely quoted and however never discussed (e.g., cf. Adlbauer 1979; Tamanini 1989; Andersen 1995; Aukema 2015).
Latreille (1797: 86) described the genus Hydrometra without specifying its gender. Etymologically, the scientific name is composed by the Latin prefix hydro- (from the Greek word ὕδωρ [hýdōr] = ‘water’) and the Greek term Μετρης [-métrēs] = ‘that measures’, so literally “that measures the water” (cf. Oli and Magini 1987); comparable to the Latin word “ gĕōmetrēs, ae ”, a masculine name.
The word “ hydrometra ” did not exist in classical Latin, but in the neo-Latin of the late 18th century, a word ending in “ -a ” was simply considered feminine. According to the International Code of Zoological Nomenclature (ICZN 1999, Art. 30.1.3) “a genus-group name that is a Greek word latinized with change of ending, or with a Latin or latinized suffix, takes the gender normally appropriate to the changed ending or the Latin suffix”.
Finally, P.A. Latreille published his “ Précis des caractères génériques des insectes [...]” at his own expense in 1797 (cf. Michelsen & O’Hara 2014), so the year of description of the genus Hydrometra is here reported as 1797, even if until now it has been incorrectly stated as 1796 (e.g., Andersen 1995; Aukema 2015).
description: Published as part of Cianferoni, Fabio, Dell'Olmo, Lorella & Lastrucci, Lorenzo, 2015, Review of Hydrometra gracilenta Horváth, 1899 (Hemiptera: Heteroptera: Hydrometridae) in Italy, with notes on its general distribution, pp. 584-590 in Zootaxa 3980 (4) on pages 585-588, DOI: 10.11646/zootaxa.3980.4.8, http://zenodo.org/record/237976