Bengalia unicolor Séguy, 1946

Rognes, Knut, 2009, Revision of the Oriental species of the Bengalia peuhi speciesgroup (Diptera, Calliphoridae), Zootaxa 2251 (1), pp. 1-76 : 52-54

publication ID	https://doi.org/ 10.11646/zootaxa.2251.1.1
persistent identifier	https://treatment.plazi.org/id/B74687E8-8508-0875-4396-FC71A30857CE
treatment provided by	Felipe
scientific name	Bengalia unicolor Séguy, 1946
status

Treatment

11. Bengalia unicolor Séguy, 1946 View in CoL

Figs. 139–148 View FIGURES 139–148 , 183 View FIGURES 173–186 , 196 View FIGURES 187–198 , 208 View FIGURES 199–210 .

Holotype male, Pakistan ( MNHN), by monotypy. For details see Type material below.

Bengalia unicolor Séguy, 1946: 85 View in CoL . Holotype male, fixed by monotypy, Pakistan (Karachi) (MNHN). Examined.

Note. Séguy did not explicitly state that he based his species on one specimen only, nor did he use the word “ Holotype ” or “Type” or similar expression in the published text, but only one specimen is present in MNHN fitting the information that Séguy published about the material before him, and I take the specimen to be a holotype fixed by monotypy. The specimens bears a Séguy “TYPE” label ( Fig. 143 View FIGURES 139–148 ). Séguy (1946: fig. 1a) illustrated the ST5 flap .

Bengalia unicolor: James, 1977: 530 View in CoL . Catalogue entry.

Bengalia unicolor: Kurahashi & Afzal, 2002: 221 View in CoL . Pakistan (Baluchistan, Khuzdar). Single female specimen, not seen by me.

Note. Kurahashi & Afzal cite the holotype male in MNHN to be among “Type material examined”. But their citation of the museum depository is preceded by a question mark (“…? ( MNHN).”) which seems to indicate that they did not examine the specimen, but only suggested that it was possibly housed in that museum .

Bengalia unicolor: Verves, 2005: 240 View in CoL . Catalogue entry.

Diagnosis. Male. Length: 11.5mm. Frons at vertex / head width ratio: 0.321 (n=1). Lunula with a pair of setulae. Anepimeron with long thin yellow setulae only, no black setulae. Fore tibia with a number of ventral spine-like setae in basal half, at least two of these much stronger than the other spine-like setae and about as long as tibial diameter ( Fig. 183 View FIGURES 173–186 ). A distinct fringe distally on mid tibia, setae about twice as long as tibial diameter ( Fig. 196 View FIGURES 187–198 ). Hind tibia also with a strong fringe, occupying distal three fourths of the tibia ( Fig. 208 View FIGURES 199–210 ). Basal segment of hind tarsus with an av row of delicate setae a little longer than segment diameter. Mid femur with the pv ctenidium of short stubby spine-like setae continuing mediad slightly beyond middle of femur; about 15–18 spine-like setae in all, 4–5 longer pv setae basad.

ST5 flap rectangular, slightly longer than broad ( Fig. 146 View FIGURES 139–148 ), the distal corners are somewhat bent dorsally so they appear slightly too short in the figure.

Cerci strongly curved in lateral view. Surstylus narrow, blunt distally, bare below. Process of the bacilliform sclerite strongly pointed.

upper lip ( Fig. 139 View FIGURES 139–148 ). Upper lip projecting beyond base of antlers, distal edge almost straight in dorsal view. Two dark lines apparent in dorsal and ventral views of upper lip ( Figs. 140, 141 View FIGURES 139–148 ) mark the insertion from below of two supporting vertical walls. These are seen in lateral view as triangular flanges, very weakly sclerotised, the anterior edge (almost invisible in Fig. 142 View FIGURES 139–148 ) passing from tip of lip to a point lateral to the ejaculatory opening. Lateral finger thin, slightly curved and smooth, a few denticles at tip only ( Fig. 147 View FIGURES 139–148 ). Internal hypophallic lobes converging. External hypophallic lobes folded distally and end in two spatula-like projections proceeding forwards and ventrally ( Figs. 140, 142 View FIGURES 139–148 ). Strongly sclerotised flaps on each side of the ejaculatory opening ( Figs. 140, 142, 148 View FIGURES 139–148 ).

Female. Unknown.

Distribution. Pakistan.

Material examined. Type material. Bengalia unicolor Séguy, 1946 . Holotype male, in MNHN, labelled (1) “MUSEUM PARIS / KURRACHEE [= Karachi] / (Août – Sept.) / MAINDRON 133-96” [yellow label with black print]; (2) “TYPE” [red label with black print]; (3) “ Bengalia / unicolor / ♂ TYPE. Seg. / E. Séguy vid. 46” [white label in Séguy’s black handwriting, except “E. Séguy vid.” which is printed; a printed black line present along the lower edge of label]. Dissected by K. R. The specimen is somewhat teneral as evident from the protruding ptilinium and the slightly wrinkled abdomen. The abdomen had large black spots on each side of the anterior half of T4, slightly intruding on T3, but they disappeared after boiling in KOH. T1+2 had a very faint and narrow band, and T3 and T4 a broader black marginal band, but no black bands remained in the dissected abdomen. T1–5 (as a unit), ST1–5 including ST5 flap (as a unit), and genitalia are kept in glycerol in a glass vial on the pin.