Johnmannia tasmanica (Paramonov)

Lambkin, Christine L., Recsei, Jacqueline M. & Yeates, David K., 2005, Systematic revision of Johnmannia Irwin and Lyneborg (Diptera: Therevidae): Atypical metallic stiletto flies from Australian mesic habitats, Zootaxa 866, pp. 1-28 : 16-17

Johnmannia tasmanica (Paramonov)

( Figs 2 , 6 , 8)

Eupsilocephala singula Mann, 1928: 159 .

Mannia tasmanica Paramonov, 1950: 526 ; Liepa, 1969: 12. Johnmannia tasmanica Irwin & Lyneborg, 1989: 357 .

Material Examined. AUSTRALIA: Tasmania. 1Ψ ( ANIC 29 003419), A. Simson ( SAM); 1Ψ ( UQIC 040944) Holwell Gorge State Forest, 40°15'32"S, 46°46'15"E, 20.xii.1998 – 9.i.1999, Malaise trap across creek, J. & A. Skevington ( UQIC); 1Ψ (MEI 108917), Lake St. Clair [42°04'S, 146°10'E], Dec. 1963, K.L. Taylor; 1Ψ ( ANIC 29 003418), Warra Long Term Ecological Research Site 106. Grid: 744282, LTIS 8211, [43°04'S, 146°40'E], Malaise trap, 14.i 12.xii.1998 ( ANIC).

Diagnosis. Wings ( Fig. 6 I) with dark reddish­brown opaque triangular basal band; hyaline basomedially; triangulate very dark reddish­brown opaque line medially; apical half of wing dark brown, paler posteriorly, paler within cells. Frons ( Fig. 6 H) without silver pruinescence, deep broad medial concavity without silver pruinescence. Face with dense, gold pruinescence laterally from antennae along inner eye margin, absent medially, broadening ventrally on gena covering anteriorly directed triangular flange of gena at base of compound eye. Occiput glossy black dorsally ( Fig. 6 H). Scutum without lateral silver pruinescent stripes. Tarsomeres without basal orange band ( Fig. 6 A). Female S8 ( Fig. 6 F) quadrate (1.1 x as long as wide).

Redescription. Female ( Fig. 6 A). Wing length: ca. 9.5–11 mm. Similar to Johnmannia powerae sp. nov., except: dark. Head. Ocellar triangle with 12–16 short, dark, setae; frons ( Fig. 6 H) narrow (3.0 x width of median ocellus), deep broad medial concavity without silver pruinescence; lower frons with dark reddish brown to black callus, paler light brown medial line ventrally in paler specimens, fine line of matte red­brown pruinescence around base of antennae extending dorsally to surround inter­antennal groove. Face ( Fig. 6 H) with dense, gold pruinescence laterally from antennae along inner eye margin, absent medially, broadening ventrally on gena. Occiput glabrous, glossy black dorsally ( Fig. 6 H), indistinct row of dark postocular setae almost length of ocellar triangle from compound eye, dense, gold pruinescence laterally and medially, absent dorsally. Gena overlain with dense, gold pruinescence; laterally flattened, triangular flange of gena ( Fig. 6 B) at base of compound eye distinct, anteriorly directed. Labellum reddish­brown to black. Antenna ( Fig. 6 B, C) dark, short (antennae/head = 1.1), scape shorter than postpedicel (scape/postpedicel = 0.8), black; pedicel black; postpedicel longer than pedicel and scape combined (postpedicel/ pedicel = 5.4), black cylinder, with dense, reddish­gold pruinescence.

Thorax dark. Scutum reflective metallic dark blue, laterally dark reddish­brown to black, without silver pruinescence; postpronotum dark red to black; post alar callus dark reddish­brown to black. Lateral silver pruinescent stripes absent; indistinct gold pruinescence in suture between scutum and scutellum. Scutellum black, reflective metallic dark blue. Pleuron glossy with reddish­gold pruinescence ( Fig. 6 B) on extreme ventral margin of proepisternum and antepronotum, dorsal, ventral and posterior margin of anepisternum, katepisternum, and proepimeron, and anepimeron anteromedially. Less setation; fine black setae on postpronotum, proepisternum, and antepronotum; short fine setae on anepisternum posteriorly and dorsally, absent from katepisternum. Legs black; tarsomeres without basal orange band. Hind legs longer ( Fig. 6 A) (hind femur/mid femur 1.2). Wing ( Fig. 6 A, I) dark infuscation, dark reddish­brown opaque triangular basal band. Triangulate, very dark reddish­brown, opaque line between apex of Sc and R1, extending to CuA2 A1 join, over m­cu crossvein and CuA2; over apex of bm and br, indistinct posteriorly. From this line on apical half of wing dark brown, paler posteriorly and within cells. Halter stem and knob dark reddish­brown to black. Abdomen dark, very dark reddish­brown to black. Genitalia: T8 ( Fig. 6 G); furca ( Fig. 6 D); S10 diamond­shaped, narrowed posteriorly, rounded anteriorly; S8 ( Fig. 6 F) quadrate (1.1 x as long as wide), broadest apically; spermathecal duct join individual spermathecal sac duct less than length of furca from spermathecal sac duct join; spermathecal sac ( Fig. 6 E) joining common spermathecal sac duct together at length of furca from anterior margin of furca; shorter ovoid median spermathecal sac ( Fig. 6 E) (1.2 x length of furca) with shorter narrow tube (length of furca) to smaller oval lobe (1.4 x length of furca); pair of larger ovoid outer spermathecal sacs ( Fig. 6 E) (2.0 x length of furca) with shorter narrow tube (length of furca) to smaller round lobe (1.5 x length of furca).

Male. Unknown.

Distribution. Tasmania.

Comments. The Holotype and Paratype described by Paramonov and supposedly placed in the NMV ( Liepa 1969; Paramonov 1950) have not been found, in any collection. The specimen ANIC29 0 0 3419 collected by Simson (SAM) was used as a basis for a redescription of Eupsilocephala singula ( Mann 1928) and was examined by Paramonov and noted in his description of tasmanica ( Paramonov 1950) . The identification of the species is not in question and therefore a neotype designation is unnecessary.

The specimen from Holwell Gorge State Forest (UQIC 040944) has a distinct pruinescent patch ventrally on the apex of the mid femur ( Fig. 6 J). Less distinct pruinescence is found in the same area on the other femora of the same specimen. This pruinescence was not observed on other Johnmannia .

Figures

FIGURE 2. One of 6 most parsimonious trees with unambiguous character and state changes mapped on branches, and Bremer supports given above nodes.

FIGURE 6. Johnmannia tasmanica Ψ UQIC 40944 lateral A – C, body H – J; Ψ ANIC 29 0 0 3419 genitalia, D – G. (A) body, (B) head and thorax, (C) antenna, (D) furca, (E) accessory glands, SD, SPSD, common SPSD, (F) S 8, (G) T 8 with apodeme, (H) head frontal, (I) wing pattern and venation, with terminology of venation and cells, (J) mid femoral pruinescence.