Bengalia martinleakei Senior-White, 1930

Rognes, Knut, 2018, Revision of the Bengalia torosa Wiedemann, 1819 species-group (Diptera: Calliphoridae), with notes on the systematic position of B. robertsi Kurahashi, 1987 and B. subnitida James, 1964, Zootaxa 4391 (1), pp. 1-71 : 41-44

Bengalia martinleakei Senior-White, 1930

( Figs 159–182 , 223 )

Bengalia martinleakei Senior-White, 1930: 69 + plate II, figs 1, 2, 2a (as “ martin-leakei ”). Correct original spelling (as required by ICZN ArTicle 32.5.2.5.). HoloType ♂ (NHMUK; examined), by original designaTion (“Unique Type …”). Type locality: India (Odisha, Rayagada [as “Rayagada, Vizagapatam Agency Tracts”; handwritten locality label “ INDIA: / Vizagatapam. / Rayagada. 1.x.1925.”]).

Bengalia martinleakei: Senior-White et al. (1940 : 95, as “ martin-leakei ”). Type locality stated to be “in the Jeypore Hills of Orissa”.

Bengalia jejuna: Séguy (1946: 83) (male from “Dardjeeling, Himalaya (F. Caius, 1915)”; dissected by me; misidentification, not jejuna Fabricius ).

Bengalia martinleakei: James (1977: 529; catalogue entry) .

? Bengalia martinleakei: Kurahashi & Thapa (1994: 218) (Nepal; 3 females; the description in the key is adequate but may possibly apply to B. kanoi from India as well; hence, these records are not accepted as true B. martinleakei ).

? Bengalia martinleakei: Kurahashi & Afzal (2002: 221) (Pakistan; 3 females from Islamabad; not accepted as true B. martinleakei ; possibly misidentified, may belong to B. kanoi ).

Gangelomyia gandhiana Lehrer, 2005: 117 . HoloType ♂ ( NHMUK; examined), by original designaTion. Type localiTy: India ( Tenmalai , Travancore). Syn. nov.

Gangelomyia krishna Lehrer, 2005: 123 . HoloType ♂ (BPBM; examined), by original designaTion. Type localiTy: “Orissa STaTe, Jeypore” [very close to type locality of B. martinleakei ]. Syn. nov.

Bengalia martinleakei: Verves (2005: 239; catalogue entry).

Gangelomyia gandhiana: Lehrer (2006a: 10) ( India [ Tenmalai , Travancore; a repetition of the holotype data]).

Gangelomyia krishna: Lehrer (2006a: 10) ( India [ex collection of the Bombay Natural History Society ]; [Siruvani, Muthikolam]); both cited specimens in NHMUK, examined).

Diagnosis. Male. Length: 14.5–15.5mm (n=3). Frons at vertex / head width ratio 0.29–0.33 (mean 0.31, n=9). Very similar to B. kanoi . Anepimeron with numerous black setulae in upper half ( Fig. 172 ). Fore tibia with 3–5 short spinous setae on ventral side ( Fig. 174 ). Abdomen with broad dark marginal bands on T3 and T4, T5 black ( Figs 161 , 171 , 223 ). Distal margin of ST5 flap with a convex protrusion in middle, leaving a concave margin on both sides ( Figs 168 , 177–178 ). Cerci short, prongs encompassing an empty space in posterior view ( Fig. 159 ); tip very narrow in lateral view ( Fig. 160 ). Surstylus oval. Bacilliform sclerite process with an obliquely cut tip ( Fig. 160 ). Distiphallus as in Figs 162–166 , 180, 182 . Apex of distiphallus ventrally with a considerable area of denticles on each side of ejaculatory opening ( Figs 166 , 180, 182 ), much as in B. kanoi but area larger. Pre- and postgonite as in Fig. 181 .

Female. Unknown.

Discussion. Specimens of this species in MNHN and NHMD have been misidentified as B. jejuna .

Biology. One of the specimens in NHMUK carries a label reading “Ant fly”, suggesting that it was observed hunting ant prey.

Distribution. India *.

Type material examined. Bengalia martinleakei Senior-White, 1930 . HOLOTYPE ♂ ( NHMUK; on rectangular, red celluloid stage), labelled (1) Holo-/ type [printed on white label with red rim]; (2) TYPE [red script on white label]; (3) INDIA: / Vizagapatam. / Rayagada. / 1. x. 1925. [handwritten, except first line]; (4) Purchd. From / R. Senior White / B.M. 1938-460. [printed]; (5) Bengalia / martin-leakei / S.W. / White det. 1928 [handwritten, except last line] ( Fig.173 ) [Right fore and mid legs lost] [NB: there is a microscope slide accompanying the holotype ( Fig. 175 ); it is labelled (1) Bengalia / martin-leakei / S.W. / ♂ genitalia / TYPE [black handwriting] at one end and (2) Holo- / type [printed on a white circular label with a red rim] at the other; slide with ST5 (including the crumpled remains of ST5 flap distally) ( Fig. 176 ) and terminalia in profile ( Fig. 179 ); both items stained with a red dye ( Fig. 175 ).]

Gangelomyia gandhiana Lehrer, 2005 . HOLOTYPE ♂ (NHMUK), labelled (1) HOLO- / TYPE [printed on white label with red rim]; (2) HOLOTYPUS [red script on white label]; (3) [upper side:] Tenmalai 500–800' / Travancore, / S. India, 11–17–X–38, [underside:] B.M.–C.M. Expdn. / to S. India, Sept.–Oct., 1938. [printed]; (4) Gangelomyia ♂ / gandhiana Lehrer n.sp. / Det. Dr. A. Z. LEHRER / 2005 [printed] [Left hind leg and right hind tibia missing; dissected by Lehrer; right pre- and postgonites destroyed, terminalia transferred by me from Lehrer’s big plastic vial to glycerol in a glass microvial; terminalia in good condition, with no Canada balsam infiltration; also recorded by Lehrer (2006a: 10), without mention of its status as holotype].

Gangelomyia krishna Lehrer, 2005 . HOLOTYPE ♂ (BPBM), labelled (1) C.E. INDIA, Orissa State, Jeypore, 533m. IX-’58, Nathan; (2) Collector / P.S. Nathan; (3) Bengalia ♂ / martinleakei / S.White, 1930 / Det. H. Kurahashi; (4) HOLOTYPUS [printed on red label]; (5) Gangelomyia ♂ / krishna Lehrer n. sp. / Det. Dr.

A.Z.LEHRER / 2005 [printed, pin hole in middle]; (6) Gangelomyia ♂ / krishna Lehrer n. sp. / Det. Dr. A.Z.LEHRER / 2005 [printed, pin hole near right hand margin of label] [The holotype has lost its right fore leg; posterior half of T3 and T4 vey dark; T5 very dark; dissected by Lehrer; terminalia (ST5 flap and epandrial and hypandrial complexes) in glycerol in a big plastic vial; transferred to glass microvial by me]. PARATYPE ♂ (NHMUK), labelled (1) Dehra Dun. / U.P., / India. (Nov. 1907. / Lt.-Col.F.W.Thomson, / I.M.S. / 1908—21. [printed, left hind leg glued to label]; (2) Ochromyia sp. ♂ / probably jejuna typ. [handwritten]; (3) Bengalia ♂ / krishna Lehrer n.sp. / Det. Dr. A.Z.LEHRER / 2004 [printed, pin hole in centre]; (4) Bengalia ♂ / krishna Lehrer n.sp. / Det. Dr. A.Z.LEHRER / 2004 [printed, pin hole near right hand margin] [Dissected by Lehrer; terminalia transferred by me from Lehrer’s big plastic vial to a glass microvial with glycerol].

Other material examined. MNHN. India: 1 ♂, labelled (1) Dardjeeling / Himalaya / F. Caius 1915 [handwritten] [Most of thorax, parts of mid femur and right eye heavily eaten by a pest/pests; fore tibia with 4 setae on right side and 3 on left; placed in general collection under B. jejuna ; dissected by me; terminalia and ST 1–5 in glycerol in microvial on pin; dried T1+2–5 glued to a piece of card on pin]. NHMD. India: 1 ♂ ( Fig. 223 ), labelled (1) Mus. / Westerm. [printed]; (2) M: jejuna / Fab: / Bengal / May 1809. [handwritten by Westermann] [Placed as specimen # 1 in NHMD collection in unit tray for Bengalia jejuna (see Fig. 222 ); dissected by me; terminalia and ST 1–5 in glycerol in microvial on pin; dried T1+2–5 glued to piece of card on pin; this is one of two existing syntypes of Musca torosa Wiedemann ; the other is in NMW]. NHMUK. India: 1 ♂, labelled (1) India / Ex coll. / Bombay / Nat.Hist.Socy. [handwritten in pencil]; (2) Gangelomyia ♂ / krishna Lehrer n.sp. / Det. Dr. A.Z.LEHRER / 2005 [printed, pin hole in centre]; (3) Gangelomyia ♂ / krishna Lehrer n.sp. / Det. Dr. A.Z.LEHRER / 2005 [printed, pin hole near right hand margin] [Dissected by Lehrer; phallus broken beyond basiphallus; distiphallus absent from original vial; terminalia transferred by me to glycerol in a glass microvial]; • 1 ♂, labelled (1) [upper side:] Siruvāni–Muthiko- / lam, 1,700–3,000' / Coimbatore Dt. / S. India, / 23 & 26–IX–38, [underside:] B.M.–C.M. Expdn. / to S. India, Sept.–Oct., 1938 [printed]; (2) Gangelomyia ♂ / krishna Lehrer n.sp. / Det. Dr. A.Z.LEHRER / 2004 [printed, pin hole in centre] [Dissected by Lehrer; terminalia transferred by me to glycerol in a glass microvial; head lost]; • 1 ♂, labelled (1) India. / Ex coll. / Bombay / Nat. Hist.Socy. [handwritten] [On very short pin; both fore legs lost, abdomen eaten from within by a pest; dissected by me; phallus partly eaten by a pest; T1+2–5 glued to a piece of card on a separate pin with a copy of original label; terminalia in glycerol in a glass microvial on the same pin]; • 1 ♂ [staged], labelled (1) INDIA. [printed]; (2) Mussorie 20.VI.05 [handwritten]; Pres. by / E. Brunetti / Brit.Mus. /1927-184. [printed] [Dissected by me; T1+2–5 glued to a piece of card on pin, below the stage and above the labels; terminalia in glycerol in glass microvial pinned below the labels]; • 1 ♂ [staged on a large piece of card], labelled (1) INDIA: / T.R.BELL. / B.M.1934–394 [handwritten in black ink]; (2) [text on underside of stage card:] Ant fly / Kant… benga … (?) / 7. 8. 24 [handwritten in pencil on line 2, difficult to decipher] [Dissected by me; T1+2–5 glued to stage card; terminalia in glycerol in a glass microvial pinned below the labels]; • 1 ♂ [staged on a celluloid plate], labelled (1) BOMBAY PRESID., / Mahableshwar / & Matheran. / J.Newton. [printed]; (2) Pres. by / Miss J.T.Newton. / B.M. 1939–206. [printed] [Dissected by me; T1+2–5 glued to stage plate; terminalia in glycerol in a glass microvial pinned below the labels].

Figures

FIGURES 159–170. Bengalia martinleakei Senior-White (holotype of Gangelomyia gandhiana Lehrer, NHMUK). 159. Epandrial complex, posterior view. 160. Epandrial complex, left lateral view. 161. Abdomen, dorsal view. 162. Distiphallus, dorsal view. 163. Distiphallus, oblique dorsolateral view. 164. Distiphallus, ventral view. 165. Distiphallus, apical view. 166. Detail of distiphallus, ventral view; arrows showing denticulate area. 167. Labels. 168. ST5 flap, broadest aspect. 169. ST5 flap, hind edge view, inside up. 170. Fore femora, dorsal view. Scale bars: 0.25mm (Figs 162–164, 166); 0.5mm (Fig. 168). Abbreviations: dlp = distal lip process; lf = lateral finger; sd = semidomes.

FIGURES 171–182. Bengalia martinleakei Senior-White (171–176, 178–179: holotype of Bengalia martinleakei, NHMUK; 177, 180–182: male from Darjeeling, India, MNHN). 171. Abdomen, dorsal view. 172. Right anepimeron. 173. Labels. 174. Left fore tibia. 175. Microscope slide of genitalia. 176. ST5 (crumpled remains of ST5 flap to the right). 177. ST5 flap. 178. ST5 flap (reproduced from Senior-White [1930 Plate II, fig. 2a]; copyright expired). 179. Epandrial complex, right lateral view. 180. Distiphallus, oblique ventrolateral view. 181. Pre- and postgonites. 182. Detail of extreme ventroapical part of distiphallus, ventrolateral view; arrows showing denticulate area on either side of ejaculatory opening. Scale bars: 0.25mm (Figs 180, 182); 0.5mm (Fig. 181). Abbreviations: dlp = distal lip process; pog = postgonite; prg = pregonite; sd = semidomes.

FIGURES 221–229. Bengalia torosa (Wiedemann) (222–223: male syntype of Musca torosa Wiedemann, NHMD; 224–225: female syntype of Musca torosa in NMW; 226–229: proposed neotype of Musca torosa Wiedemann, NHMD). 221. Label similar to the one added to the two syntypes of Musca torosa. 222. Labels. 223. Abdomen, dorsal view (before dissection). 224. Labels. 225. Abdomen, dorsal view. 226. Label. 227. Proposed neotype label. 228. Head, thorax and parts of abdomen, dorsal view. 229. Label.