Xanthogramma calceata, SACK, 1926

Mengual, Ximo, 2012, The flower fly genus Citrogramma Vockeroth (Diptera: Syrphidae): illustrated revision with descriptions of new species, Zoological Journal of the Linnean Society 164 (1), pp. 99-172 : 106

XANTHOGRAMMA CALCEATA SACK, 1926

Sack (1926: 570) described X. calceata based on a single female from Negros Occidental, a province of the Philippines located in the Western Visayas region. The remainder of his collection is now located in Frankfurt (Senckenbergische Naturforschende Gesellschaft, Research Institute and Natural History Museum), but the single female collected by Banks used to describe X. calceata was not there. Material of X. calceata was looked for in the Baker’s collection at the National Museum of Natural History (Washington, D.C.) because most of the material studied by Sack was collected by Baker, but nothing was found. Thus, the type material of this species is considered lost. Based on the original description, X. calceata is unlikely to be a Citrogramma species. Sack (1926: 571) said: ‘Auf dem zweiten und dritten Ring je eine auf der Mitte breit unterbrochene rotgelbe Mittelbinde, die den Seitenrand nicht ganz erreich’ [On each the second and third rings (= terga), one red-yellow central band, medially broadly interrupted, which does not completely reach the side edge]. This abdominal pattern, with two yellow maculae on terga 2 and 3 not reaching lateral margins, is not found in Citrogramma but it could be Xanthogramma Schiner, 1860 or Scaeva Fabricius, 1805 . Xanthogramma calceata has yellow face with medial black vitta, yellow frons with medial black vitta, and lunule yellow, with a faint pattern on tergum 4, following Sack’s (1926: 570) description and drawing (1926: pl. 1, fig. 8).