Collessiama narelleae Lambkin

Lambkin, Christine L. & Turco, Federica, 2013, Collessiama (Diptera: Therevidae: Agapophytinae: Taenogera genus-group), a new genus from eastern Australia, with a key to the Australian genera of Therevidae, Zootaxa 3680 (1), pp. 96-117 : 100-106

Collessiama narelleae Lambkin sp. nov.

(Figs 1, 5–28, 47–48)

Holotype: Queensland: Ƥ, Mt Glorious Biological Centre, Main Rd, Mt Glorious, rainforest, 28.xi.98, Malaise trap 3, S.Winterton, N.Power, D.White, A.Hiller [-27.383 152.75], UQIC 41191 MEI 092266 ( QMBA).

Paratypes: New South Wales: Ƥ, Allyn River Forest Park, 25 km NW Dungog, Allyn River, rainforest wet sclerophyll, 18–25.xii.1990, Malaise, D. Pollock, L. Reichert [-32.24 151.57], MEI074223 ( USNM); Ƥ, Dorrigo National Park at light, 14.ii.1967, C.W.Frazier [-30.348 152.822], MEI029759 ( UQIC). Queensland: BRISBANE FOREST PARK, ENOGGERA CREEK: Ƥ, Scrub Rd Xing, 27°25'42 S 152°50' 33E, 200m, tropical rainforest with eucalyptus, 14–29.xi.1995, Malaise, M.E.Irwin, MEI088911 ( CASC); 3, same except 10–14.xi.1995, MEI129958 ( ANIC); Ƥ, same except 1–7.xii.1995, MEI088908; 2 Ƥ, same except 7–27.xii.1995, MEI088909-88910 (all CASC); 2 3, Scrub Creek, 27°25'41S, 152°50'18E, 28.ix–15.x.2002, J.Skevington, J.M.Cumming ( CNC). CAINBABLE QUARRY: 2 Ƥ, 28.145°S 153.113°E, open forest, 2–16.xii.2008, Malaise, G.Monteith, T183122- 183123; Ƥ, same except 28.x–9.xi.2008, T183156. Ƥ, Cooloola St. For. 29.x.79, E.C.Dahms & J.LaSalle [-26.05 153.05], T183171 (all QMBA); LAMINGTON NATIONAL PARK: Ƥ, Binna Burra, 31.i.1961, D.K.McAlpine [-28.2 153.183], MEI149417 (AMS); Ƥ, IBISCA 700B, 28.192°S 153.124°E, rainforest, 16.xii.2008 – 6.i.2009, Malaise, G.Monteith, T183101; Ƥ, same except 3–19.ii.2009, F. Turco, T183076; Ƥ, IBISCA 700C, 28.193°S 153.128°E, rainforest, 2–16.xii.2008, Malaise, G.Monteith, T183124; Ƥ, same except 9.xi–2.xii.2008, T183141; Ƥ, same except 3–19.ii.2009, F. Turco, T183174; Ƥ, same except 748m, 13–23.i.2007, C.Lambkin & N.Starick, 22148, T183074; Ƥ, IBISCA 900, 28.210°S 153.127°E, Open forest, 20.ii–5.iii.2009, Malaise, G.Monteith, T183077; Ƥ, same except 2–16.xii.2008, T183126; 3, Lahey Memorial, 28.188°S 153.121°E, rainforest, 16.xii.2008 – 6.i.2009, Malaise, G.Monteith, T183118; Ƥ, same except 9.xi–2.xii.2008, T183129 (all QMBA); 2 Ƥ, O'Reilly's, Green Mountains, 28°13'25S, 153°07'30E, 920m, Jan–Feb 1996, emergence trap, M.E.Irwin, ANIC 29:008136, 008138; Ƥ, same except Nov–Dec 1995, ANIC 29:008133; Ƥ, same except 1–25.ii.1996, Malaise, ANIC 29:008131; 3 Ƥ, same except 3–31.xii.1995, ANIC 29:003439, 0 0 8126, 0 0 8128 (all ANIC); MOUNT GLORIOUS: Ƥ, -27.333, 152.75, sclerophyll forest, 16–20.ii.1961, hand netted, J.L. & M.Gressitt, MEI029756 ( BPBM); Ƥ, Tony Hiller’s property, 27°20'07 S 152°45' 30E, 720m, tropical cloud forest, 28.xii.1995 – 4.i.1996, Malaise, M.E.Irwin, ANIC 29:008102 ( ANIC); Ƥ, same except dense tropical rainforest, 1–7.xi.1995, MEI088914; 3, same except hand netted, MEI088907 (both CASC); Ƥ, Mt Glorious Biological Centre, Main Rd, rainforest, 23.i.98, Malaise trap 3, S.Winterton, N.Power, D.White, A.Hiller [-27.383 152.75], UQIC 41185 MEI 092260; Ƥ, same except 28.xi.97, UQIC 41184 MEI 092259; Ƥ, same except 5.xii.97, UQIC 41188 MEI 092263; Ƥ, same except 6.xii.1997, UQIC 041293; Ƥ, same except 12.xii.97, UQIC 41186 MEI 092261; Ƥ, same except 9.i.98, UQIC 41189 MEI 092264; Ƥ, same except 30.i.98, UQIC 41182 MEI 092257; Ƥ, same except 28.xi.98, UQIC 41190 MEI 092265; Ƥ, same except 19.xii.98, UQIC 41187 MEI 092262; Ƥ, same except 30.xii.1997, Malaise Trap 1, UQIC 040802 (all UQIC); Ƥ,. xii.1976, Malaise, Z.Boucek [-27.383 152.75] ( QDPI); Ƥ, 27°19'54 S 152°45' 29E, rainforest, 11.iii.1998, Malaise, N.Power, MEI147741 ( CNC); 2 Ƥ, rainforest, 19–26.xi.1979, Malaise [-27.383 152.75] ( QDPI). Ƥ, Mt Huntley, 28°08'S, 152°26'E, 1260m, 20.xii.1992 – iii.1993, Intercept & Pitfall, G.Monteith, T183080 ( QMBA); Ƥ, Mt Tamborine, ix–x 1978 Sankowsky, Malaise [-27.917 153.167] ( QDPI).

Other material examined: New South Wales: Ƥ, Lorien Refuge, 3 km N Lansdowne nr Taree, rainforest margin, 7–13.xii.1987, Malaise, G. Williams [-31.757 152.527], K337509 (AMS). Queensland: BRISBANE FOREST PARK, ENOGGERA CREEK: Ƥ, Scrub Rd Xing, 27°25'42 S 152°50' 33E, 200m, tropical rainforest with eucalyptus, 14–29.xi.1995, Malaise, M.E.Irwin, MEI088912 ( NCSU); Ƥ, same except 28.xii.1995 – 4.i.1996, ANIC 29:008096 ( ANIC); Ƥ, Scrub Creek, 27°25'41S, 152°50'18E, 28.ix–15.x.2002, J.Skevington, J.M.Cumming ( CNC); Ƥ, top of Scrub Rd, 27°25'11 S 152°50' 51E, sclerophyll eucalyptus forest, 7–27.xii.1995, Malaise, M.E.Irwin, MEI088913 ( CASC); CAINBABLE QUARRY: Ƥ, 28.145°S 153.113°E, 9.xi–2.xii.2008, Malaise, G.Monteith, T183127; Ƥ, same except rainforest, 2–16.xii.2008, T183128; Ƥ, same except open forest, 23.i–3.ii.2009, Malaise, G.Monteith & F. Turco, T183075 (all QMBA); LAMINGTON NATIONAL PARK: Ƥ, IBISCA 700A, 28.188°S 153.121°E, rainforest, 16.xii.2008 – 6.i.2009, Malaise, G.Monteith, T183158; Ƥ, IBISCA 700B, 28.192°S 153.124°E, rainforest, 20.ii– 5.iii.2009, Malaise, G.Monteith, T183125; 2 Ƥ, same except 2–16.xii.2008, T183120-183121; Ƥ, IBISCA 900, 28.210°S 153.127°E, Open forest, 16.xii.2008 – 6.i.2009, Malaise, G.Monteith, T183130; Ƥ, same except 23.i– 3.ii.2009, G.Monteith & F. Turco, T183119; Ƥ, Lahey Mem., 28.188°S 153.121°E, rainforest, 16.xii.2008 – 6.i.2009, Malaise, G.Monteith, T183117; 3 Ƥ, same except 2–16.xii.2008, T183082, T183090, T183096 (all QMBA); Ƥ, O'Reilly's, Green Mountains 28°13'25S, 153°07'30E, 920m, 1–25.ii.1996, Malaise, M.E.Irwin, ANIC 29:008132; 7 Ƥ, same except 1–31.i.1996, ANIC 29:008109-008110, 008112-008116; Ƥ, same except 3– 31.xii.1995, ANIC 29:008123 (all ANIC); MOUNT GLORIOUS: 3, -27.333, 152.75, 5.–8.ii.1961, Malaise, J.L.&M.Gressitt, MEI029755 ( BPBM); Ƥ, January 1989, Malaise, A.&H.Howden, K358193 (AMS); Ƥ, Mt Glorious Biological Centre, Main Rd, rainforest, 9.i.98, Malaise trap 3, S.Winterton, N.Power, D.White, A.Hiller [- 27.383 152.75], UQIC 41183 MEI 092258; Ƥ, same except 30.i.98, UQIC 41181 MEI 092256 (both UQIC).

Diagnosis. Antennae orange. Scutum orange overlain with pale silver pubescence more distinct over narrow, medial and lateral reddish stripes. Scutellum orange, with velvet matte reddish-black pubescence dorsally. Wing with bright orange infuscation with two black infuscate bands separated by broad orange band in both males and females. Abdomen bicolored (more distinctly in male), segments 1–3 orange, 4–6 (+ 7 in males) reddish-brown to black. Male gonocoxae with distinct triangular flattened ventral flange narrowing to acute point. Distiphallus short, broad, narrowing apically to broad ventrally-directed lobe with rows of small setiferous teeth.

FIGURES 5–15. Female Collessiama narelleae . 5. Dorsal. 6. Lateral. 7. Wing. 8. Head frontal. 9. Dark form dorsal. 10. Thoracic pubescence, lateral view. 11. Genitalic complex: SPS spermathecal sac; SPSD spermathecal sac duct. 12. S8 ventral. 13. S8 lateral. 14. T8 dorsal. 15. T8 lateral: A apodeme.

Description. Female (Figs 1, 5–15). Body length: ca. 7–13 mm.

Head (Figs 1, 5, 6, 8–10). Head shape laterally subtriangular, height = width at antennal callus. Upper frons flat, black, width equal to width of ocellar triangle, 2x width median ocellus, overlain with dense matte black pubescence, 4–6 short, dark setae on ocellar triangle, dense short, dark setae below ocellar triangle; lower frons flat, reddish to orange, paler ventrally, slight medial indentation; rounded orange antennal base, with silver pubescence on ocellar triangle, laterally along compound eyes, and around antennal bases, 4–6 prs longer, dark setae laterally above antennae; face orange, overlain with dense pubescence, silver except for matte reddish pubescent spot beside compound eye below antennae. Occiput convex laterally, concave medially; postocular ridge convex, single distinct row of dark postocular setae, occasional separate ventral seta, silver pubescence over postocular ridge; broad velvet matte black velutum triangle below postocular setae equal in depth to broad silver pubescent band, width of head, over supracervical sclerite (Figs 5, 9); 10 long, strong, dark occipital setae in 2 indistinct rows laterally, clothed with long, fine, pale setae ventrally. Gena rounded, narrowing to point ventrally, clothed with long, pale setae, overlain with dense silver pubescence except for matte reddish triangle at base of compound eye, only obvious from lateroventral view. Palp orange, dense long, dark setae laterally and ventrally; labellum brown, scattered dark setae. Antenna orange with silver pubescence, long (antenna length/head length = 0.77–0.85), scape covered with admixed numerous short and a few long thickened, dark setae, largest ventroapically, absent mediolaterally; long, dark setae on pedicel and base of F, scape shorter than flagellum (scape length/flagellum length = 0.533, 0.54Ƥ); flagellum longer than scape and pedicel combined (flagellum length/ pedicel length = 4.83, 6Ƥ); postpedicel long broad cylinder, laterally flattened, with deep indentation on posteromedial surface; basal stylomere short broad cylinder, apical stylomere globular with short pointed medial style.

Thorax (Figs 1, 5, 6, 9, 10). Scutum orange with indistinct narrow, medial and lateral reddish stripes merging posteriorly (some specimens darker to reddish-brown; Fig. 9), numerous short dark setae, overlain with pale silver pubescence more distinct over medial and lateral reddish stripes and laterally; postpronotal lobe yellow to orange. Scutellum orange, velvet matte reddish-black pubescence dorsally (Fig. 5), fine silver pubescent band apically. Pleuron shiny, orange (some specimens darker to reddish-brown Figs 9–10), overlain with 3 very indistinct partial vertical silver pubescent bands, denser ventrally (Fig. 10): (1) extreme dorsal anepisternum, antepronotum, proepisternum, proepimeron, c1; (2) posterior laterotergite, meron, posteroventral katepisternum, c2; (3) metepimeron, c3. Glossy areas are ventral area of anepisternum, anterior and dorsal katepisternum, anepimeron, anterior laterotergite, mediotergite; very long pale setae on antepronotum, proepisternum; short dark setae on anepisternum posterodorsally, laterotergite, anterior surface of c1, posterior surface c3. 6 long dark setae on laterotergite. Long strong reddish setae distally anteriorly and laterally on c1 (4 setae), anteriorly on c2 (3 setae), and posteriorly on c3 (1 seta). Scutal chaetotaxy: np 3; sa 1; pa 1; dc 0; sc 1. Legs orange; dense short dark setae on femora and tarsi, excepting mid and hind basitarsi, thus tibia and mid and hind basitarsi appear paler; single reddish subapical macroseta anteroventral on hind femur; numerous long strong reddish setae on tibia, mid and hind tarsi; pale dense apically-directed spicules cover fore tibia and tarsi; indistinct pale silver pubescence on posteroventral surfaces of all femora, not in discrete patches. Wing (Fig. 7) covered with microtrichia, bright orange infuscation darker anteriorly, with two black infuscate bands separated by broad orange band. Basal black band from R1, extending to r-m crossvein, over m-cu crossvein and CuA2; across base of r2+3, d, m3 and cua1; apex of bm and br, indistinct and broader and broader posteriorly, filling anal cell. Medial, darker broad (fifth of wing length) straight band across middle r2+3 and r5, over base of r 4 m 1 and m2, apex of r1, d and m3. Apical fifth of wing bright orange. Veins within orange infuscation distinctly orange. Veins within black infuscation distinctly dark. Halter stem orange, base of knob brown, knob white.

Abdomen. Segments 1–2 orange to red, 3–4 reddish-brown, 5–6 dark reddish-brown to black, 7–8 orange; glossy T5-8; overlain with pale indistinct reddish pubescence, pale silver pubescence basally T2, broader laterally apical half T2, entire lateral surfaces T3 and T4; very long pale setae laterally T1-2, short, dark setae T2-5, longer reddish-gold setae T5-8.

Genitalia (Figs 11–15). T8 quadrate, apodeme broad short, third length of T8; furca well sclerotised, length greater than 2x width, narrowed posteriorly, closed; T8-10 joined through sclerotised band; acanthophorites A1 setae broad, red, 6–8, A2 setae, red, 10–12; S10 diamond-shaped, narrowed posteriorly and anteriorly, S8 posterior margin deeply indented medially, lateral margins narrowed very slightly at midpoint but accented by lack of pigmentation, width S8 basally/W S8 medially = 1.2; three spermathecae; all three spermathecal ducts entering into common spermathecal sac duct basally, close to anterior margin of furca, spermathecal ducts half length of furca, narrow into very fine tube of same length as furca, spermathecae indistinct, unpigmented, unsclerotised; spermathecal sac arrangement trilobate with all 3 spermathecal sacs joining common spermathecal sac duct (2x length furca) via broad tubes at single ovoid chamber; spermathecal sac duct (1x length furca) to large ovoid median spermathecal sac (2.5x length furca) with short tube to smaller outer round lobe (1x length furca), laterally two spermathecal sac ducts (4– 5 x length furca) enlarged subapically at join to round spermathecal sac (1.5x length furca).

Male ( Figs 16–28 ). Body length: ca. 7–9 mm. Similar to female except:

Occiput with long, pale not dark occipital setae laterally; antennae shorter, 0.77x length of head. Wing black basal band narrower, indistinct along posterior margin, absent from anal cell; medial black band broader (quarter of wing length), broadest but less distinct posteriorly; orange apical infuscation narrower (sixth of wing length), equal in breadth to orange medial infuscate band.

Abdomen distinctly bicolored, segments 1–3 orange, 4–7 reddish-brown to black; silver pubescence more distinct, especially laterally T1-4; short, dark setae T2-7, no reddish-gold setae.

Genitalia ( Figs 18–28 ). Gonocoxae orange, to dark red basally, pale cream to yellow setae, distinct clump of 10–12 very long yellow to reddish ventrally-directed setae along each basomedial margin; very short gold reflective setae lining surface from ventral ridge medially. Epandrium orange, paler to cream medially and posteriorly appearing indented medially on posterior margin, distinctly narrowed posteriorly, hidden beneath T7, reddish setae longer and thicker basally and laterally; cerci long narrow, cream to white. T8 broadly narrowed medially (medial length 1/7 of lateral length), 7–10 long dark setae along each posterolateral margin, lateral spiracle; S8 ovoid, 20–24 long dark setae along posterior margin. Gonocoxae with dorsally directed distinct triangular flattened ventral flange narrowing to acute point; fused to hypandrium basolaterally leaving large linear and medial unsclerotised area medially. Outer gonocoxal process well developed, broad, narrowing to rounded point, incurved apically, as long as inner gonocoxal process. Ventral lobe well developed, ¼ length of gonostylus, rounded, sclerotised, dorsally directed, dense short setae on dorsal surface and margin. Gonocoxal apodeme short, 1/5 length of G, dorsally joining gonocoxal apodeme plate that extends dorsally over half the length of outer gonocoxal process, free medially. Inner gonocoxal process long, narrow, apically spatulate and cup-shaped on ventral surface; ventrally directed, glabrous. Gonostylus longer than inner gonocoxal process, basally broad and twisted, long setae on basomedial surface; sharply pointed, triangular gonostylar dorsal process bearing many long setae on medial surface, 1/3 length of gonostylus from apex; apical 1/3 of gonostylus broad long lobe, recurved dorsomedially, cup-shaped on medial surface, bearing many long setae on medial surface, dorsal surface with small setiferous teeth. Hypandrium large, ovoid, fused to gonocoxae laterally and ventrally. Distiphallus short, broad, narrowing apically to broad ventrally-directed lobe with rows of small setiferous teeth; dorsal apodeme of parameral sheath forked with arms curved over basiphallus, dorsal and lateral arms almost 3/5 length of ejaculatory apodeme; ventral apodeme of parameral sheath long, 4/5 length ejaculatory apodeme; ejaculatory apodeme broad anteriorly; lateral ejaculatory process narrow band-like; base of ejaculatory apodeme linear, narrowing apically.

Distribution ( Fig. 48 ). Collessiama narelleae has been collected in rainforest and wet sclerophyll eucalypt forests in south-eastern Queensland and north-eastern New South Wales. This species is often associated with higher altitude rainforest habitats, and was collected in numbers at 700 and 900 m but not 300, 500, or 1100 m sites during the IBISCA Queensland project.

Etymology. Collessiama narelleae is named for Narelle Power who collected many of the specimens during her temporal studies of Therevidae in south-eastern Queensland ( Power, 1998). Narelle cheerfully and enthusiastically spent 15 months collecting flies using nine dual head, 6 metre Malaise traps, sorting hundreds of samples, labelling, and identifying hundreds of thousands of specimens, leaving all of her colleagues amazed at her tireless efforts.

Comments. Collessiama narelleae is easily distinguished from Collessiama damani by the diagnostic characters, especially the medial orange infuscation on the wings. Collessiama narelleae has often been collected in association with the wasp Priocnemis erythrothorax (Turner) (Pompilidae) . There is a possibility that the therevid is demonstrating Batesian mimicry with the wasp, as a defence mechanism.

Figures

FIGURES 16 – 28. Male Collessiama narelleae. 16. Dorsal. 17. Lateral. 18. Genitalic complex dorsal, epandrium removed. 19 – 20. Genitalic complex lateral: DP distiphallus; E epandrium; GAP gonocoxal apodeme plate; G gonocoxa; GS gonostylus; GSDP gonostylar dorsal process; H hypandrium; IGP inner gonocoxal process; OGP outer gonocoxal process; VF ventral flange. 21 – 22. Genitalic complex ventral, epandrium and aedeagus removed: VL ventral lobe, VR ventral ridge. 23. Genitalic complex lateral, epandrium removed. 24. Epandrium dorsal. 25. Aedeagus dorsal. 26 – 27. Aedeagus lateral: BEA base of ejaculatory apodeme; DA dorsal apodeme of parameral sheath; EJA ejaculatory apodeme; LEP lateral ejaculatory process; VA ventral apodeme of parameral sheath. 28. Aedeagus ventral.

FIGURES 47 – 49. Distributions. 47. Area of distribution inset. 48. Collessiama narelleae. 49. Collessiama damani.