Bactrocera (Zeugodacus) armillata ( Hering, 1938 )

Zhou, Li-Bing, Chen, Xiao-Lin, Deng, Yu-Liang & Wang, Shao-Jun, 2013, Description of a new species and record of Bactrocera Macquart (Diptera, Tephritidae) from China, Zootaxa 3647 (1), pp. 194-200 : 197

Bactrocera (Zeugodacus) armillata ( Hering, 1938) New Record in China

( Figs 8–16 )

Strumeta armillata Hering, 1938 , Arkiv For Zoolog i, Band 30A(25):6. Holotype Ƥ in NRS

Bactrocera (Bactrocera) armillata ( Hering, 1938) .- Hardy, 1977: 48; White & Hancock 1997; Norrbom et al., 2004.

Description. Male ( Fig. 10 ). Body length 5.0mm; Wing length 5.3mm.

Head. Frons ( Fig. 8 ) yellow to fulvous, with black spots at bases of setae; frons about 1.4 times as long as wide and about as wide as eye in dorsal view. Ocellar triangle black, lunule fulvous and vertex yellow to fulvous; Face yellow to fulvous with two large black spots on sides, the distance between them about 1.0–1.5 times their diameter. Parafacial and gena yellow to fulvous, occiput dark brown to black, yellowish along eye margin; occipital row of setae present. Antenna with segments 1 and 2 yellow to fulvous, segment 3 fuscous with apex and anterior part slightly dark brown and about 3.2 times as long as segment 2; arista bare, black with yellowish base. Head setae black: 3 frontals, 1 orbital, 1 medial vertical, 1 lateral vertical, 1 genal.

Thorax. Scutum ( Fig. 12 ) black with two narrow lateral postsutural yellow vittae extending to or before the level of intra-alar setae, and one short narrow median postsutural yellow vitta (invisible in 2 specimens). Postpronotal lobes entirely yellow. Pleura predominantly black with following yellow areas: anepisternal stripe, anatergite, katatergite. Scutellum largely black, with two very small lateral yellow marks. Mediotergite entirely black. Scutellum with apical setae only. Other thoracic chaetotaxy: 2 notopleural, 1 postsutural supra-alar, 1 postalar, 1 intra-alar, 1 anepisternal, 2 scapular, 1 prescutellar acrostichal setae present. Wing ( Fig. 9 ) hyaline in ground color; with rather narrow costal band and an isolated brown spot at lower apex of cell r2+3 and upper apex of cell r4+5; anal streak extending to posterior margin; cells bc and c colourless. Legs yellow to black; fore femora ( Fig. 11 ) with about basal 1/4 yellow and remainder black, mid femora with basal 1/2 yellow and remainder black, hind femora with basal 2/3 yellow and remainder black; fore tibiae fuscous, mid tibiae with basal 1/2 fuscous and remainder yellow, hind tibiae black; tarsi yellow to fuscous (apical 4 segments darker); mid tibiae each with an apical black spur.

Abdomen ( Fig. 13 ). Oval in shape, completely black except for a narrow, fulvous band on posterior margin of tergite 1, tergite 2 and tergite 5 (sometimes obscure); pecten present on tergite 3. Tergite 5 slightly longer than tergite 4. Sternite 5 with a slight concavity ( Fig. 16 ).

Male terminalia: Epandrium large and broad, rounded in posterior view ( Fig. 14 ); posterior surstylus lobe much longer, lateral surstylus with apex angulated in lateral view ( Fig. 15 ); medial surstylus with 2 black and similar-sized prensisetae. Glans slightly elongate, with slender and membranous subapical lobe.

Female. Only known from the type series originally described by Hering in 1938.

Material examined. Holotype ♀ ( NRS), Burma: Kachin: Kambaiti , N25º24' E98 º 9', 9 VI 1934; Paratype ♀ ( BMNH), (E)#5327647, Burma: Kachin: Kambaiti , 2000m, 9/6.1934 Malaise; 6 3 ( IZCAS), China: Yunnan: Nujiang , Pianma 1695m, N26º11'00'', E 98º58'00'', 28 July 2010, Wang Shaojun and Zhao Kanglin, attracted to Cue lure.

Distribution. Burma, China (Yunnan).

Attractant. Cue lure.

Host. Unknown..

Remarks. This species distinctly differs from all other related species by the following combination of characters:1) scutellum largely black, only with two small lateral yellow spots, 2) scutum usually with one very short and narrow median postsutural yellow vitta (occasionally invisible), 3) the distance between the two facial spots being about 1.0–1.5times their diameter.

The male of B. armillata (Hering) is recorded here for the first time, and it shows the typical subgenus Zeugodacus character of abdominal sternum 5 having a slight concavity, thus the species is transferred from subgenus Bactrocera to subgenus Zeugodacus .

We examined images of the holotype of B. (Z.) armillata ( Hering, 1938) with the help of Dr Yngve Brodin (Naturhistoriska Riksmuseet, Sektionen fur entomologi, Sweden). We also examined images of the paratype of B. (Z.) armillata ( Hering, 1938) with the help of Dr Ian White and Mrs Kim Goodger (Department of Entomology, Natural History Museum, Cromwell Road, London, England).

Figures

FIGURES 8 – 16. Bactrocera (Zeugodacus) armillata (Hering, 1938). 8. Head, front view; 9. Wing; 10. Body, lateral view; 11. Fore leg; 12. Scutum, dorsal view; 13. Abdomen, dorsal view; 14. Epandrium, circus andsurstylus in posterior view; 15. Epandrium, circus and surstylus in lateral view; 16. Sternite 5.