Bactrocera (Bactrocera) parabancroftii, Drew & Ma & Smith & Hughes, 2011

Drew, R. A. I., Ma, Jing, Smith, S. & Hughes, J. M., 2011, The Taxonomy And Phylogenetic Relationships Of Species In The Bactrocera Musae Complex Of Fruit Flies (Diptera: Tephritidae: Dacinae) In Papua New Guinea, Raffles Bulletin of Zoology 59 (2), pp. 145-162 : 151-153

Bactrocera (Bactrocera) parabancroftii , new species

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Material examined. – Holotype male, PAPUA NEW GUINEA: Central Province, Kaiau Settlement (Hiri Tano Highway), 3 Dec.1998, D. Tenakanai, attracted to cue lure, (trap P022).

Paratypes. – 1 male, 23 Feb.1999, same locality data as holotype ; 2 males (23 Jun.1999), 1 male (20 Oct.1999), 1 male (25 Aug.1999), Central Province, Lobulogo, Hiri Tano Highway, D. Tenakanai, attracted to cue lure, (trap P036) ; 2 males, Central Province, Sivitatana turn off ( Magi Highway ), 13 Jul.1999 and 8 Sep.1999 , D. Putulan, cue lure, (trap P030); 2 males, Central Province, Kaiau Settlement, Hiri Tano Highway , 23 Feb.1999 and 15 Mar.1999 , D. Tenakanai, cue lure, (trap P022); 1 male (3 Aug.1999), 1 male (26 Aug.1999), Central Province, Delana turnoff, Hiri Tano Highway, D. Putulan, cue lure, (trap P026) ; 1 male, Central Province, Kwikila Forest, Magi Highway , 10 Aug.1999 , D. Tenakanai, cue lure, (trap P029); 1 male, Central Province, Moreguina ( Sukuna Guise Residence ), in Cape Rodney, 27 Spe. 1999, D. Tenakanai, cue lure, (trap P044) ; 1 male, Central Province, Goldie River (down river), 12 Oct. 1999 , D. Tenakanai, cue lure, (trap P028); 1 male, Central Province, Goldie Barracks , 4 Jul.1999 . D. Tenakanai, attracted to cue lure, (trap P002); 1 male (4 Aug.1999), 1 male (2 Sep.1999), Central Province, Osabeai Village, Goldie River , D. Tenakanai, attracted to cue lure, (trap P003) ; 1 male, Central Province, LCD 12 mile, 15 Sep.1999 , D. Tenakanai, attracted to cue lure, (trap P004); 2 males, Central Province, Rouna 4, 6 Jun.2000 , D. Tenakanai, attracted to cue lure, (trap P007); 1 male, Central Province, Gamore Comm School, Magi Highway , 6 Oct.1998 , D. Tenakanai, attracted to cue lure, (trap P015); 1 male (9 Dec.1998), 1 male (10 Aug.1999), Central Province, Launakalana Estate, Magi Highway, D. Tenakanai, attracted to cue lure, (trap P017) ; 1 male (14 Oct.1998), 1 male (3 Dec.1998), Central Province, Galley Reach Ranch, Hiri Tano Highway, Coll. D. Tenakanai, attracted to cue lure, (trap P020) ; 1 male, Central Province, Nara Gabadi, Hiri Tano Highway , 6 Jul.1999 , D. Tenakanai, attracted to cue lure, (trap P025); 2 males, Central Province, Goldie River (down River ), 16 Nov.1999 , D. Tenakanai, attracted to cue lure, (trap P028); 1 male, Central Province, Kwikila Forest, Magi Highway , 24 Nov.1999 , D. Tenakanai, attracted to cue lure, (trap P029); 1 male, Central Province, Sivitatana turn off, Magi Highway , 2 Nov.1999 , D. Putulan, attracted to cue lure, (trap P030); 1 male (27 Jan.1999), 2 males (21 Sep.1999), 1 male (7 Aug.1999), Central Province, Launakalana Estate, Magi Highway, D. Tenakanai, attracted to cue lure, (trap P031) .

Location of Types. – Holotype ( T. 152248) in QM; 6 paratypes ( T. 152249 – T. 152254) in QM; 6 paratypes in ANIC; 4 paratypes in BMNH; 18 paratypes in QDPI.

Diagnosis. – A medium sized species; face fulvous with a pair of medium sized oval black spots; postpronotal lobe and notopleuron yellow; scutum black; two lateral postsutural vittae present; medial postsutural vitta absent; mesopleural stripe reaching anterior npl. seta dorsally; scutellum yellow; wing with a narrow fuscous costal band just overlapping R 2+3, broad fuscous cubital streak present, cells bc and c pale fulvous, microtrichia in outer corner of cell c only; abdominal terga III–V orange-brown with a narrow medial longitudinal fuscous to black band from centre of tergum III to posterior margin of tergum V.

Description. – Male.

Head. – Vertical length 1.7 mm. Frons length 1.53 times breadth; red-brown with fulvous along lateral and ventral margins and a dark fuscous around orbital setae and on anteromedial hump; latter with a small number of short dark hairs; orbital setae black: 1 s.or.; 2 i.or.; lunule red-brown. Ocellar triangle black. Vertex fuscous. Face fulvous with a pair of medium sized oval black spots; length 0.5 mm. Genae fulvous, small fuscous subocular spot; red-brown seta present. Occiput red-brown, fulvous along eye margins; occipital row with 4–8 dark setae. Antennae with segments 1 and 2 red-brown, segment 3 red-brown with dark fuscous on apex and outer surface; length of segments: 0.16 mm, 0.32 mm, 1.0 mm.

Thorax. – Scutum black with dark red-brown below lateral postsutural vitta, around mesonotal suture, between postpronotal lobe and notopleuron, inside postpronotal lobe. Pleural area fuscous to black except red-brown below postpronotal lobe. Yellow markings as follows: postpronotal lobe; notopleuron; mesopleural stripe reaching to anterior npl. seta dorsally, continuing to katepisternum as a transverse spot, anterior margin straight; anatergite (posterior apex black); anterior 5/7 katatergite (remainder black); two moderately broad, parallel sided, lateral postsutural vittae ending behind ia. setae. Postnotum black. Scutellum yellow except for a narrow black basal band. Setae: sc. 2; prsc. 2; ia. 1; p.sa. 1; a.sa. 1; mpl. 1; npl. 2; scp. 4.

Legs. – All segments fulvous except hind tibiae pale fuscous; mid tibiae each with an apical red-brown spur.

Wings. – Length 5.8 mm; cells bc and c pale fulvous (cell c slightly paler); microtrichia in outer corner of cell c only; remainder of wings colourless except fuscous cell sc, narrow fuscous costal band just overlapping R 2+3 with a pale infuscation and remaining narrow before ending between extremities of R 4+5 and m, broad fuscous cubital streak; dense aggregation of microtrichia around A 1 +CuA 2; supernumerary lobe weak.

Abdomen. – Oval; terga free; pecten present on tergum III. Tergum I and sterna I and II wider than long. Terga I–V orange-brown with a very narrow medial longitudinal fuscous to black band over terga III–V which is sometimes interrupted at intersegmental lines; in some specimens the lateral margins of terga III, IV and V have very narrow fuscous patterns. A pair of oval orange-brown shining spots on tergum V. Posterior lobe of surstylus short, sternum V with a moderate concavity on posterior margin.

Attractant. – Cue lure.

Distribution. – Central Province, Papua New Guinea.

Hosts. – No known record.

Etymology. – This species is named parabancroftii because of its close morphological resemblance to Bactrocera bancroftii (Tryon) .

Remarks. – Bactrocera parabancroftii new species is similar to B. contermina and B. contigua in possessing the typical musae complex characters, each lateral postsutural vitta reaching to or behind the ia. seta, costal cells with a pale fulvous tint and microtrichia in outer corner of cell c only. It differs from B. contermina in having some dark colouration on the abdominal terga, from B. contigua in having the broad cubital streak and from both species in having each broad parallel sided lateral postsutural vitta ending behind the ia. seta and a narrow costal band just overlapping R 2+3.

Figures

Fig. 2. Bactrocera (Bactrocera) parabancroftii, new species.