SOCIETÀ VENEZIANA Lavori Vol. 38 Vol. Lavori DI SCIENZE NATURALI Lavori vol. 38 Venezia – Gennaio 2013 I ss N 0392 9450 ATURALI N CIENZE S DI ENEZIANA V OCIETÀ S SOCIETA SCIENZE NATURALI.copertina n. 38.indd 1 28/01/2013 11.15.08 SOCIETÀ VENEZIANA DI SCIENZE NATURALI Lavori vol. 38 Venezia – Gennaio 2013 I ss N 0392 9450 La Società Veneziana di Scienze Naturali si è costituita a Venezia nel Dicembre 1975 . SOCIETA SCIENZE NATURALI_n. 38.indd 1 28/01/2013 11.05.32 Autorizzazione Tribunale di Venezia n° 555 del 18 ottobre 1975 CON S IGLIO DIRETTI V O Presidente della Società Lorenzo Bonometto Vice Presidente Giovanni Caniglia Consiglieri Botanica: Giovanni Caniglia Didattica, Ecologia, Tutela ambientale: Giovanni Timossi Scienze della Terra e dell'Uomo: Bruno Bizzotto Zoologia: Lorenzo Munari Referente per l’Entomologia: Alessandro Sartori Segretario Tesoriere Anna Maria Confente Revisiori dei conti Luigi Bruni Corrado Lazzari Comitato scientifico di redazione: Giovanni Caniglia (Direttore), Fabrizio Bizzarini, Giampietro Braga, Paolo Canestrelli, Corrado Lazzari, Francesco Mezzavilla, Alessandro Minelli, Enrico Negrisolo, Michele Pellizzato Direttore responsabile della rivista Alberto Vitucci . c/o Museo di Storia Naturale Fontego dei Turchi, S. Croce 1730 30135 Venezia (Italy) codice fiscale: 94072450276 Tel. 041 2750206 - Fax 041 721000 sito web: www.svsn.it e-mail: [email protected] SOCIETA SCIENZE NATURALI_n. 38.indd 2 28/01/2013 11.05.33 Lavori vol. 38 SOCIETA SCIENZE NATURALI_n. 38.indd 3 28/01/2013 11.05.33 SOCIETA SCIENZE NATURALI_n. 38.indd 4 28/01/2013 11.05.33 GIANNI RAFFONE * On some Ochthera Latreille, 1802 from Jamaica with description of a new species and key to species of the Neotropical Region. (Insecta, Diptera, Ephydridae) Key words: Jamaica, Ochthera Latreille, 1802, new species Riassunto Su alcune Ochthera Latreille, 1802 della Jamaica con descrizione di Ochthera (Ochthera) jamaicensis n. sp. (Insecta, Diptera, Ephydridre) Viene riportata la presenza di Ochthera (Ochthera) angustifacies Hendel, 1930, nuova per la Jamaica. Viene descritta una nuova specie di Ochthera Latreille, 1802: Ochthera (Ochthera) jamaicensis n. sp. simile a Ochthera (Ochthera) exsculpta Loew, 1862, da cui differisce principalmente per la presenza di 3 setole intralari; meron con 1 setola mediana; scutello nero con una evidente e irregolare scultura sull’intera superficie; epandrio stretto, arrotondato all’apice; surstilo largo e ovoidale; cerco prominente in visione laterale; fallapodema corto, troncato all’apice; fallo arrotondato, con appendici apicali lunghe. Abstract Ochthera (Ochthera) angustifacies Hendel, 1930 is reported for the first time from Jamaica. Ochthera (Ochthera) jamaicensis n. sp. from Jamaica is described. It is similar to Ochthera (Ochthera) exsculpta Loew, 1862, from which it differs in having 3 intra-alar setae; meron with a medial seta; scutellum black with obvious irregular sculpture on the entire surface; epandrium narrow, rounded apically; surstylus broad and ovoidal; cercus prominent in lateral view; phallapodeme short, truncated api- cally; phallus rounded, with long apical appendages. Introduction Several specimens of Ochthera Latreille, 1802 (Diptera Ephydridae), collected by Prof. Walter Rossi in Jamaica, are reported in this note. While examining this material, deposited in the collection of the Museo di Storia Naturale of Venice, I found a species not previously reported from this country, and even some speci- mens belonging to an undescribed species. Taxonomy and distribution are according to CLAU S EN (1977, 1980), CRE ss ON (1938), MATHI S & ZATWARNICKI (1995) and DALTON DE SOUZA (2012). It should also be stressed that I was able to carefully examine some specimens of O. exsculpta Loew, 1862 and O. angustifacies Hendel, 1930 previously determined by P.J. Clausen and preserved in the collection of the Natural History Museum of Venice. List of the species Ochthera (Ochthera) angustifacies Hendel, 1930 Jamaica, Royal Pale Park, near Sheffield (Negril), 22/24.vii.1993, 4 ♂♂, 3 ♀♀. Distribution: Argentina, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Guate- mala, Honduras, Mexico, Panama, Paraguay, Peru. New to Jamaica. Ochthera (Ochthera) jamaicensis n. sp. Type material: holotype ♂, 2 paratypes ♂♂ and 2 paratypes ♀♀ from Jamaica, * c/o Entomology Section, Natural Clarendon Parish, Milk River (at the mouth of the river), 29.vii.1993, W. Rossi History Museum, S. Croce 1730, I-30135 Venezia, Italy. leg.. All specimens are micropinned laterally. Abdomen and male terminalia of e-mail: [email protected] the holotype in a microvial pinned below the specimen. Lavori Soc. Ven. Sc. Nat. - vol. 38: 5 - 8, Venezia, 31 gennaio 2013 5 SOCIETA SCIENZE NATURALI_n. 38.indd 5 28/01/2013 11.05.33 Holotype and paratypes are deposited in the dipterological collection of the Museo di Storia Naturale, Venice, Italy. I could also exanime in the collections of Museo some specimens of the species of O. exculpta and O. angustifacies classified by Clausen. DE S CRIPTION Body length: 4.09 – 4.10 mm. MALE Head: shining black covered with black microtomentum; 2 large proclinate frontal setae; 8 to 10 orbitals; vertex dark with golden microtomentum; inner vertical setae large, convergent; face black covered with silvery microtomen- tum, except for an elongate black central spot with a median line extending to clypeus and laterally with a black curved line reaching parafacial area; facial ridge with silvery microtomentum; face narrow, distance between eyes 0.30 – 0.31 mm; parafacial setulae in 2 rows, each bearing 4 - 6 inner and 6 - 8 outer setulae, respectively; gena with silvery microtomentum; gena-to-eye ratio 3.0 – 3.1. Clypeus pointed apically, black, covered with silvery microtomentum. Prementum short, narrow, 0.30 – 0.31 mm long; palpus yellow. THORAX Shining black, with silvery microtomentum, iridescent to purplish stripes present between acrostichal setal rows and laterally along dorsocentral setal rows; length of scutum 1.4 – 1.5 mm; anterior notopleural seta small, posterior one large; 3 large posterior intra-alar setae, 1 supra-alar seta; scutellum black, with obvious irregular sculpture on the entire surface; length of scutellum 0.40 – 0.41 mm; pleura black with greyish to silvery microtomentum; meron with 1 well developed median seta; legs with brownish coxae; trochanters blackish; femora black with reddish apices; tibiae black; tarsi yellowish (all with greyish microtomentum); forefemur with 6 large, black, basal setae and 2 large posterodorsal setae on apical half; a row of ventral spines; a row of postero-ventral setae; length of tibial spur 0.25-0.28 mm; basitarsus and sec- ond tarsomere without sensory structures, bearing long yellow setae beneath; hind basitarsus yellow, with setulae concolorous beneath; midfemur with 3 posteroventral setae; midtibia without setae; wing veins light brown; haltere yellow. ABDO M EN Entirely shining black, bearing sparse setulae; male terminalia: epandrium narrow, rounded apically; surstylus broad ovoidal; cercus prominent in lateral view; phallapodeme short, truncated apically; phallus rounded with long apical appendages. CO M PARATI V E RE M ARK S Ochthera (Ochthera) jamaicensis n. sp. is similar to Ochthera (Ochthera) exsculpta Loew, 1862, in having the face, when viewed in front, with raised carinal area of central spot, though not dome-like, black, with lateral spots concolorous; male with fore basitarsus and second tarsomere without sensory structures. It differs from the latter species mainly by the following characters: 3 intra- alar setae (2 in O. exsculpta); meron with a median seta (lacking in O. exsculpta); scutellum black, with obvious irregular sculpture on the entire surface (un- sculptured, shining black in O. exscuplta); epandrium narrow, rounded apically (broad and remarkably pointed apically in O. exsculpta); surstylus broad ovoidal (narrow, angulate, with internal cavity in O. exsculpta); phallapodeme short and truncated apically (long and rounded in O. exsculpta); phallus rounded with long distal appendages (ovoidal and with short distal appendages in O. exsculpta) (figs. 1-6). FE M ALE Similar to male. 6 Lavori Soc. Ven. Sc. Nat. - vol. 38: 5 - 8, Venezia, 31 gennaio 2013 SOCIETA SCIENZE NATURALI_n. 38.indd 6 28/01/2013 11.05.33 Figg. 1-3. Ochthera (Ochthera) exsculpta Loew, 1862 (Jamaica, Clarendon Parish, 29.vii.1993): 1 - Phallapodeme; 2 - Phallus; 3 - Male terminalia. Figg. 4-6. Ochthera (Ochthera) jamaicensis n. sp. (Holotype: Jamaica, Clarendon Parish, Milk River, 29.vii.1993): 4 - Phallapodeme; 5 - Phallus; 6 - Male terminalia. ETY M OLOGY The species epithet, jamaicensis, refers to the country where the new species was collected (Jamaica). Key to the Neotropical species of the genus Ochthera Latreille, 1802. 1. Face, when viewed in front, with one or more distinct, shining black spots, or some other combination of patterns .......................................................................2 - Face without distinct, shining black spots, stripes, or some other combination of patterns ....................................................................................................................9 2. Facial pattern with broad central spot, becoming much narrower and often not reaching oral margin ...........................................................................................3 - Facial pattern with narrow black median line which branches laterally near oral margin ..................................................................................................................11