The flower fly genus Citrogramma Vockeroth (Diptera: Syrphidae): illustrated revision with descriptions of new species Author Mengual, Ximo text Zoological Journal of the Linnean Society 2012 2012-01-17 164 1 99 172 http://dx.doi.org/10.1111/j.1096-3642.2011.00750.x journal article 10.1111/j.1096-3642.2011.00750.x 0024-4082 5406153 CITROGRAMMA BICORNUTUM VOCKEROTH, 1969 Citrogramma bicornutum Vockeroth, 1969: 98 . Holotype : ♂ , BPBM, by original designation. Type locality: Papua New Guinea : Daulo Pass. Vockeroth, 1969: 98 , fig. 95. Thompson & Vockeroth, 1989: 442 ; Wyatt, 1991: 155 , 156. Geographical distribution: New Guinea . Differential diagnosis: Very distinct species with a medial black facial vitta, cell BM bare on basal half, and abdominal terga 3 and 4 each with a narrow yellow fascia ( Figs 15, 16 ). Similar to C. asombrosum , but they differ in male genitalia, abdominal pattern ( C. asombrosum has a broad yellow fascia on terga 3 and 4) and geographical distribution ( C. asombrosum is only known from New Caledonia ). Holotype male deposited in the Bernice P. Bishop Museum (Honolulu, Hawaii , USA ) and labelled: ‘NEW GUINEA : NE,/Daulo Pass,/ 2500 m , V–2–1959 ’ ‘C.D. Michener/Collector/BISHOP’ ‘ HOLOTYPE / Citrogramma / bicornutum / Vockeroth ’ [red, handwritten except first line]. Type locality: Papua New Guinea : Eastern Highlands Province , Daulo District , Daulo Pass , 2500 m , 6°01′S , 145°12′E . Material examined: Type material. Holotype , as above. Paratypes . PAPUA NEW GUINEA : (NE) Morobe Province , Wau , 1200 m , 5.x.1962 , J. Sedlacek , Malaise trap [ 1♂ 1♀ , BPBM ]; (NE) 6 km W of Wau , Nami Creek , 1700 m , 15.vi.1962 , Malaise trap , J. Sedlacek [ 1♀ , BPBM ] .