Syrphus dives Rondani, 1857

Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, Zootaxa 4989 (1), pp. 1-438 : 270-271

Syrphus dives Rondani, 1857

ORIGINAL DESCRIPTION: 1857: 128 (key), 136 (description).

TYPE LOCALITY: “ in agri parmensis planitie et locis montuosis … etiam in Etruria et in Pedemontio vivit [ Parmese plains and mountains … also Etruria (= Tuscany) and Piedmont ( Italy)]” .

TYPE MATERIAL: 1 ♂, lectotype (missing left wing) ( MZUF: Box 5): Syrphus Fabr. / dives Rnd. / 226 / Lectotypus Syrphus dives , design. C. Kassebeer, 1992.

PARALECTOTYPES EXAMINED: 1 ♂ (missing abdomen), 3 ♀♀ (one missing left mid- and hind-leg; one missing left mid-leg) ( MZUF: Box 5): Syrphus Fabr. / dives Rnd. / 226 / Paralectotypus [not designated] Syrphus dives , design. C. Kassebeer, 1992.

PARALECTOTYPES NOT EXAMINED: 1 ♂, 1 ♀ ( MZUF: Box B): Syrphus dives Rnd. , 77 , ♂ ♀, Parma / 393 77; 1 ♂ (only thorax with wings and fore- and mid-legs remain, head and abdomen glued to a cardboard stage pinned below specimen) ( MSNC: Box DIPTERA Ex collezione Rondani - I): Syrphus dives Rndn . ♂ ♀ Parma / Coll. Rondani, scatola n° 3, posiz. H-11 / Museo di Storia Naturale Università di Pisa , Calci ( PI) ex collezione Rondani ; 1 ♀ ( MSNC: Box DIPTERA Ex collezione Rondani - I): Syrphus dives Rndn . ♀ Parm. / Coll. Rondani, scatola n° 3, posiz. H-12 / Museo di Storia Naturale Università di Pisa , Calci ( PI) ex collezione Rondani ; 1 ♀ ( MSNPV: Box 98): Syrphus dives Rnd ., ♂ ♀, Parma.

CURRENT STATUS: junior synonym of Xanthogramma pedissequum (Harris, 1776) ( Peck 1988: 52) ; valid species, as Xanthogramma dives ( Belcari et al. 1995a: 8, Speight & Sommaggio 2010: 140, Nedeljković et al. 2018: 9).

REMARKS: Rondani (1857: 136) described Syrphus dives without specifying the number, the sex or the length of the specimens he had collected and also received from V. Pecchioli and L. Bellardi. Christian Kassebeer examined the MZUF type material, adding the label “ lectotype ” under one male, without formally publishing a lectotype designation ( Speight & Sommaggio 2010: 140). Speight & Sommaggio (2010: 141) designated as lectotype the male previously labeled as such by Kassebeer, without including the four specimens (one male and three females) labeled as paralectotypes by Kassebeer because they “seem to include more than one species” (all are paralectotypes). Speight & Sommaggio (2010: 140) did not mention an additional five specimens: two in the MZUF, two in the MSNC and one in the MSNPV (all are paralectotypes).