Lagenosoma danielsorum, Winterton, 2023

Winterton, Shaun L., 2023, Wasp-mimicking soldier flies of the Australian Region: revision of Ampsalis Walker, Elissoma White and Lagenosoma Brauer (Stratiomyidae: Clitellariinae), Zootaxa 5246 (1), pp. 1-63 : 32-34

Lagenosoma danielsorum sp. n.

( Figs 14A–D ; 20 ; 23C ; 26F, G ; 29E, F ; 33A, B ; 37 )

Zoobank. urn:lsid:zoobank.org:act:E75C9B1C-D493-49C8-AE22-7F01E368B7E8

Diagnosis. Antennae relatively elongate, flagellomere VIII deeply plumose distally, flagellomeres IV–VII all short and approximately equal in length; male face bulbous orange with erect black setae; female scutellum white (green when live), male black; scutum orange (female) or black (male); male abdomen narrow, petiolate; male occiput suffused with black.

Description. Body length = 7.0–8.0 mm. Head. Yellow (red in female when live), frons slightly rounded, female with black paired triangular markings above antennae; face broadly rounded and bulbous, yellow, frequently with paired black spots below antennae, extensive erect, black setae, shorter in female; parafacial yellow with margin of silver pubescence along eye; ocellar tubercle black; postocular ridge highly carinate in female, not carinate in male; occiput flat, black (male) or yellow (female), covered with black setal pile (longer in male); antenna (length = 2.8 mm) with scape and pedicel dark yellow, flagellomeres I–III dark yellow with dark microtrichia, flagellomeres IV–VIII black, flagellomeres V–VII relatively short and combined length equal to length of flagellomere III, ratio of length of flagellomere VII to VIII is 1: 20, flagellomere VIII elongate and deeply plumose with microtrichia.

Thorax. Black (male) or dark yellow with reddish-brown scutum (female; red when alive), posterior portion of thorax black (katatergite, metanepisternum, metepimeron and mesopostnotum) in female; scutum with erect, elongate, yellow, setal pile in male, short black setae in female; anepisternum whitish along dorsal margin; scutellum white (green when alive); fore and midcoxae yellow, hind coxa black; rest of legs variable yellow or black, fore and mid legs either entirely yellow, or sometimes tarsi black, hind leg usually entirely black or yellow with black band on femur; hind tibia and tarsus longer and thicker than other legs; haltere yellow to green; wing smoky infuscate, venation dark; pterostigma dark. Abdomen. Male abdomen narrow, petiolate basally, segment 1 equal to width of scutellum with segment 5 widest and equal to width of scutum; segment 1 with lateral flange well developed; female abdomen wider, white or yellow with black markings, black paired markings on tergites 1–2, tergite 3–4 black with white posteromedial spot and along lateral margin, remaining segments entirely black. Male genitalia. Epandrium relatively short; gonocoxites rounded with angular posterolateral processes; gonostylus bilobed and well developed; phallus relatively elongate with medial lobe only slightly longer. Female genitalia. Not dissected.

Etymology. I am pleased to name this species in honour of Greg and Alice Daniels, who collected many of the specimens examined as part of this study.

Comments. This species is very similar to L. dimorphum sp. n. with females easily distinguished by the green (white with dried) scutellum, which is dark yellow with black laterally in L. dimorphum sp. n.; there is very little variation in these characters and no overlap found. Lagenosoma danielsorum sp. n. does not display any variation in the colour of the head in the female based on the specimens examined. Males are more difficult to distinguish between these two species, although in L. danielsorum sp. n. the head is suffused with black on the occiput and with more extensive black pile on the face, while in L. dimorphum sp. n. it is uniformly bright yellow and with pile more sparse on the face. The male genitalia of both species are also very similar in shape.

Type material— Holotype male, AUSTRALIA: Queensland: 2 km W of Rainbow Beach [-25.9021, 153.0689],

24.IX.1984, G.&A. Daniels, C.J. Burwell ( QM).

Paratypes. AUSTRALIA: Queensland: 10 males, 11 females, same data as holotype ( QM) .

Other material examined — AUSTRALIA: Queensland: 4 males, 2 females, Cougal Ck., Upper Tallebudgera [-28.2061, 153.3511], 12–14.X.1990, G. Daniels, rainforest margin ( QM) ; 1 male, 13 females, Cooloola Section , Great Sandy NP [-25.9539, 153.1074], 1–5.X.1996, D.K. Yeates, C. Lambkin & S.L. Winterton, Malaise trap ( QM) ; 2 males, Enogerra Creek, Scrub Rd., Brisbane Forest Park [-27.4272, 152.8402], 3–10.X.1997, S.L. Winterton, N. Power, D. White, Malaise trap ( CSCA) ; 1 female, Mt. Cotton [-27.6167, 153.1999], 13.IX.1997, C.J. Burwell ( QM) ; 1 female, Oakview , summit [-26.1688, 152.3349], 600 m, 24.IX.2001, Monteith, mv light ( QM) ; 1 female, Goomburra Forest Pk., E of Goomburra [-27.9566, 152.3616], 22.XI.1987, C.J. Burwell ( QM) ; 1 female, W of Highvale nr. Samford [-27.3833, 152.7869], 19.IX.1986, G. Daniels ( QM) ; 1 male, 1 female, Mt. Tamborine [- 27.9169, 153.1911], XI.1977, Agard, Malaise trap ( QM) . New South Wales: 2 males, 1 female, Broken Head, nr. Byron Bay [-28.7127, 153.6124], 24.IX.1979, I.F.B. Common ( ANIC) .

Figures

FIGURE 14. A. Lagenosoma danielsorum sp. n., male, lateral view; B. Lagenosoma danielsorum sp. n., male, oblique view; C. Lagenosoma danielsorum sp. n., female, lateral view; D. Lagenosoma danielsorum sp. n., female, oblique view; E. Lagenosoma clitellum sp. n., male, lateral view; F. Lagenosoma clitellum sp. n., male, dorsal view; G. Lagenosoma clitellum sp. n., female, lateral view; H. Lagenosoma clitellum sp. n., female, oblique view.

FIGURE 20. Stylised illustrations of the antenna of Eudmeta, Ampsalis, Elissoma and Lagenosoma.

FIGURE 23. Male genitalia, (dorsal and ventral views). A. Elissoma brunnea Hardy; B. Elissoma hauseri sp. n.; C. Lagenosoma danielsorum sp. n.

FIGURE 26. Heads of Elissoma and Lagenosoma. A. Elissoma scapula sp. n., male; B. Elissoma scapula sp. n., female; C. Lagenosoma clitellum sp. n., male; D. Lagenosoma clitellum sp. n., female; E. Lagenosoma danielsorum sp. n., male; F. Lagenosoma danielsorum sp. n., female; G. Lagenosoma dimorphum sp. n., male; H. Lagenosoma dimorphum sp. n., female (pale form); I. Lagenosoma dimorphum sp. n., female (dark form); J. Lagenosoma dimorphum sp. n., female (intermediate form); K. Lagenosoma dispar Brauer, male; L. Lagenosoma dispar Brauer, female.

FIGURE 29. Elissoma and Lagenosoma scutellums. A. Elissoma scapula sp. n., male; B. Elissoma minuta sp. n., male; C. Lagenosoma clitellum sp. n., male; D. Lagenosoma clitellum sp. n., female; E. Lagenosoma danielsorum sp. n., male; F. Lagenosoma danielsorum sp. n., female; G. Lagenosoma dimorphum sp. n., male; H. Lagenosoma dimorphum sp. n., female; I. Lagenosoma dispar Brauer, male; J. Lagenosoma dispar Brauer, female.

FIGURE 33. Lagenosoma abdomens. A. Lagenosoma danielsorum sp. n., male; B. Lagenosoma danielsorum sp. n., female; C. Lagenosoma dimorphum sp. n., male; D. Lagenosoma dimorphum sp. n., female; E. Lagenosoma dispar Brauer, male; F. Lagenosoma dispar Brauer, female; G. Lagenosoma pictum Brauer, male; H. Lagenosoma pictum Brauer, female; I. Lagenosoma propinquum Brauer, male; J. Lagenosoma propinquum Brauer, female; K. Lagenosoma varigatum sp. n., male; L. Lagenosoma varigatum sp. n., female.

FIGURE 37. Distribution of Lagenosoma species.