Citrogramma pendleburyi, (CURRAN, 1928)

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 : 154

CITROGRAMMA PENDLEBURYI ( CURRAN, 1928)

Syrphus pendleburyi Curran, 1928: 206 . Holotype: ♂, BMNH, by original designation. Type locality: Malaysia: Gunong Tahan. Curran, 1928: 199, 206, 1931a: 313.

Citrogramma pendleburyi of Knutson et al., 1975: 311; Wyatt, 1991: 155, 157.

Geographical distribution: Malay Peninsula ( Pahang).

Differential diagnosis: Species very similar to C. marissa , with black facial vitta and costal cell bare. Citrogramma pendleburyi differs in having wing much more microtrichose basally (only cell CuP bare on anterior margin) ( Fig. 131 ; see Fig. 132 ) and a slightly broader eye angle (about 110°). Citrogramma marissa is only known from southern India and it is smaller than C. pendleburyi . Other morphological differences are the shape of yellow maculae on tergum 2 and the size of dark scutellar macula, much broader and more rounded in C. marissa (see Figs 119, 121 ).

Remarks: Species only known from the holotype male ( Fig. 121 ).

Holotype male deposited in The Natural History Museum, formerly British Museum (Natural History) (London, UK) and labelled: ‘MALAY PENIN:/Pahang, F.M.S./ Gunong Tahan / Seat Point 5460′ / Dec: 21 st 192 2 / H.M. Pendlebury’ ‘EX COLL:/F.M.S./Museum.’ [back of the label] ‘Pres by/Fed. Maly States/Museum/B.M. 1934–74’ ‘TYPE/ Syrphus / pendleburyi /No. Curran ’ [red, handwritten by Curran] ‘Holo–/type’ [red, round] ‘ HOLOTYPE / Citrogramma / pendleburyi (Curran) /det. X. Mengual 20 09 ’.

Type locality: Malaysia: Pahang State, Taman Negara National Park, Mount Tahan , 1664 m, 4°37′N, 102°14′E .

Material examined: Type material. Holotype, as above.

Figures

Figures 131–139. 131–134, microtrichia pattern of wing. 131, Citrogramma pendleburyi. 132, Citrogramma marissa. 133, Citrogramma clarum. 134, Citrogramma sp. B. 135–137, Citrogramma asombrosum, male genitalia: 135, left lateral view; 136, tergum 9 and surstyli, dorsal view; 137, terga 7, 8, and 9, and surstyli, lateroventral view (as in pinned specimen). 138–139, Citrogramma australe: 138, left lateral view; 139, tergum 9 and surstyli, dorsal view.

Figures 112–121. 112–115, Citrogramma difficile: 112, dorsal view of male abdomen; 113, dorsal view of female abdomen; 114, dorsal view of female head and lateral view of pleuron; 115, lateral view of male head and pleuron. 116–118, Citrogramma gedehanum: 116, dorsal view of male abdomen; 117, dorsal view of female abdomen; 118, lateral view of male pleuron. 119–120, Citrogramma marissa: 119, dorsal view of male abdomen; 120, dorsal view of female abdomen. 121, Citrogramma pendleburyi, dorsal view of male abdomen.