Pest Fruit Flies of the World
Body. Body elongate; predominantly orangish to brown.
Head. Number of frontal bristles three pairs. Number of orbital bristles one pair. Anterior orbital bristle of male normal, unmodified. Posterior orbital bristles reclinate; acuminate. Ocellar bristles absent or minute, like setulae. Postocellar bristles present. With both inner and outer vertical bristles. Outer vertical, postvertical and postocellar bristles all acuminate. Postocular bristles acuminate; normal. Genal bristle present. Head higher than long. Male and female head width the same (?). Frontofacial angle about equal to a right angle and angular, or much greater than a right angle and rounded. Face concave; with distinct antennal grooves and carina; shorter than frons; vertical; without dark marks. Parafacial spot absent. Frons and parafacial without small silvery markings. Fronto-orbital plate setulose. Frontal stripe setulose. Eye round, about as high or slightly higher than long. Antenna about as long as face. Scape, pedicel, and first flagellomere all relatively short. First flagellomere shorter than face, or as long as face; rounded apically. Arista longer than first flagellomere; plumose, with hairs at least half as long as first flagellomere width (short); hairs both dorsal and ventral. Proboscis short, capitate.
Thorax. Inner scapular bristle present and distinguishable from surrounding vestiture; dark. Outer scapular bristle present and distinguishable from surrounding vestiture; dark. Postpronotal bristle present. Presutural dorsocentral bristle absent. Presutural supra-alar bristle absent. Postsutural supra-alar bristle present. Acrostichal bristle present. Postsutural dorsocentral bristle present; bristles about midway between postsutural supra-alar and post-alar bristles. Intra-alar bristle present, well developed, similar to postalar bristle. Intrapostalar bristles absent. Number of scutellar bristles two pairs. Apical scutellar bristles as long as basals or longer. Anterior notopleural bristle present. Posterior notopleural bristle(s) acuminate. Number of outstanding anepisternal bristles two, or three to five (2–3). Katepisternal bristles present. Anepisternal bristles dark, brown to black. Long, erect setulae on laterotergite present. Scutal setulae acuminate and dark. Scutellum sparsely setulose. Setulae on scutellum short, decumbent; unicolorous, acuminate. Transverse suture with the lateral branches wide apart. Complete sclerotized postcoxal metathoracic bridge absent or semimembranous. Scutum fuscous; without a large dark central stripe which broadens basally. Postpronotal lobe entirely pale whitish or yellowish; concolorous with lateral postsutural stripe. Posterior half of notopleuron pale whitish or yellowish. Scutum dorsad of notopleuron with a pale stripe which extends from the postpronotal lobe dorsad of the anterior notopleuron, not reaching the posterior half of the notopleuron (blueish-white). Dark lyre-like pattern on scutum absent. Discrete shiny black spots on scutum absent. Median longitudinal black stripe on scutum absent. Number of pale whitish to yellow postsutural stripes four (2 lateral & 2 mediolateral, meeting at & continuing onto scutellum, usually bluish-green colored). Pale medial postsutural stripe of scutum pale brown central stripe is actually ground color. Lateral postsutural stripes of scutum continuing along side of scutellum. Scutum with blackish dorsocentral stripe, or without blackish dorsocentral stripe. Area bordering scutoscutellar suture medially without dark brown spot, light colored. Discrete pale horizontal stripe along upper anepisternum present and distinct, extending from postpronotal lobe to wing base. Distinct pale vertical anepisternal stripe absent. Katepisternite with pale yellowish or whitish spot present and distinct. Transverse suture without distinct stripe or spot. Katatergite with pale yellowish or whitish spot present and distinct. Anatergite with pale yellowish or whitish spot absent or indistinct. Subscutellum uniformly black, or yellowish to orange-brown medially, with distinct dark spots laterally. Mediotergite uniformly brown. Scutum microtrichia in discrete pattern due to density differences. Dorsum of scutellum flat or slightly convex, not swollen. Scutellum normal; with a dark and pale pattern; with no isolated dark spots; without black mark, or with a black mark extending to apex, leaving only lateral areas pale (without black mark; with brown mark extending to apex); without mark, or marked orange-brown in basal quarter - rest dull yellow, or marked with an orange-brown triangle, or orange-brown except lateral margins.
Legs. Femora slender. Fore femur with regular bristles; without ventral spines; with 1 to 3 posterodorsal and 1 posteroventral rows of bristles only. Mid femur and hind femur without spine-like bristles. Middle leg of male without feathering. Femora all entirely of one color; dark mark on fore femur 0% of length of femur; dark mark on middle femur 0% of length of femur; dark mark on hind femur 0% of length of femur.
Wings. Wing partly bare. Cell bc microtrichia absent. Cell c microtrichia present in apical area. Cell dm entirely microtrichose. Dense microtrichia at end of vein A1+CuA2 in male absent. Dominant wing pattern cross-banded, or mostly dark. Crossbanded wing patterns with bands extensively fused, distorted, or greatly reduced. Wing pattern mostly brownish. Dark longitudinal streaks through basal cells absent. Crossvein r-m covered by a major crossband. Crossvein dm-cu covered by a major crossband which reaches posterior margin of wing. Crossveins r-m and dm-cu both covered by a single crossband, or not both covered by a single crossband. Cell r2+3 apical to r-m with large hyaline area. Anal band absent, or not reaching nearly to wing margin. Cell r1 and r2+3 without darker spots within the pattern. Intercalary band absent. Subbasal crossband absent. Marginal hyaline area in cell r1 present and distinct. Anterior apical crossband contiguous with costa over entire length, without marginal hyaline band or spots apically in cells r1 and r2+3, or partly to entirely separated from costa by marginal hyaline band or spots. Posterior apical crossband present, or absent. Discal band transverse, or oblique in anterobasal-posteroapical direction, or absent. Discal and apical crossbands not directly joined. Discal and subapical crossbands joined along anterior wing margin or along vein R4+5. Subapical and anterior apical crossbands joined. Outstanding costal spine(s) at subcostal break present. Ratio of length of costal section 3 to costal section 4 0.4. Ratio of pterostigmal length to width 2.5. Vein R1 dorsal setation without bare section opposite end of vein Sc. Vein Rs dorsal setation non-setulose. Vein R2+3 generally straight. Anteriorly-directed accessory vein emerging from R2+3 absent. Vein R4+5 dorsal setation sparse over both sections; ventral setation present. Distance between crossvein r-m and costa longer than r-m. R-m crossvein on cell dm at or near middle of cell dm. Cell bm narrow, triangular; ratio of length to width 3; ratio of width to cell cup width 1. Vein M distally straight. Cell dm widens apically gradually from base. Posterodistal corner of cell dm distinctly acute, or approximately a right angle. Cell cup extension or lobe present, vein CuA2 abruptly bent; shorter than vein A1+CuA2; triangular.
Abdomen. Abdomen ovate or parallel sided. Abdominal tergites separate. Abdomen in lateral view flatter, more flexible. Abdominal tergite 1 broader at apex than at base; without a prominent hump laterally. Pecten of dark bristles on tergite 3 of male absent. Tergal glands on tergite 5 absent. Abdominal tergite 5 normal. 6th tergite of female exposed; as long as 5th. Abdominal setulae acuminate and dark. Abdominal microtomentum absent. Abdominal sternite 5 of male less than 2x wider than long, not longer than wide. Posterior margin of sternite 5 of male with deep V-shaped posterior concavity. Abdominal tergites 3–5 predominantly yellow to orange brown, or predominantly black. Abdominal tergites without medial dark stripe; not brown with medial T-shaped yellow mark; with broadly contiguous dark areas on lateral margins of T3-T5; without dark brown transverse bands.
Male terminalia. Epandrium in posterior view with moderately long outer surstyli, which are up to about half as long as epandrium; lateral view with outer surstyli distinctly narrower than epandrium, clearly differentiated.
Female terminalia. Syntergosternite 7 straight (?); shorter than rest of body, but longer than preabdomen; 2.7 mm; conical. Ratio of syntergosternite 7 to abdominal tergite 5 4.5. Dorsobasal scales of eversible membrane about as large as other scales (?). Aculeus length 2 mm. Aculeus tip pointed, with preapical shoulder, or trilobed; fused to main part of aculeus, not movable. Three sclerotized spermathecae. Spermathecae spherical, or ovoid, or elongate.
Miscellaneous. Male attractant: none known.
Oriental. W. Malaysia, Philippines, Indonesia (Java).
Illustrations. • Wing. • Male terminalia. • Female terminalia.
Cite this publication as: ‘L.E. Carroll, I.M. White, A. Freidberg, A.L. Norrbom, M.J. Dallwitz, and F.C. Thompson. 2002 onwards. Pest fruit flies of the world. Version: 8th December 2006. http://delta-intkey.com’.