Ozeoura, Theischinger & Billingham & Growns, 2018

Theischinger, Gunther, Billingham, Zacariah D. & Growns, Ivor, 2018, Ozeoura-a New Genus of Chioneinae (Insecta: Diptera: Tipuloidea: Limoniidae) from Australia, Records of the Australian Museum (Rec. Aust. Mus.) 70 (5), pp. 447-468 : 462

Ozeoura pupa

Figs 51–53

Material examined. Victoria: 1, Bindi, Tambo River at Blackfellows Flat (-37.05809° 147.827985°), 29-xi-2011, Z. Billingham; 1, Humevale, Jacks Creek off Road 10 (-37.4689° 145.16974°), 14-xii-2011, Z. Billingham; 2, Weeragua, Cann River West Branch off Monaro Hwy (-37.37295° 149.19899°), 11-xii-2012, Z.Billingham;3, Mitta Mitta, Snowy Creek off Omeo Hwy (-36.54554° 147.40903°), 13-xii-2012, Z.Billingham; 1, Harrietville, Ovens River off Mill Rd (-36.90145° 147.05372°), 14- xii-2012, Z. Billingham; 2, Nariel Valley , Nariel Creek off Benambra- Corryong Rd (-36.44357° 147.82987°), 14-xii-2012, Z. Billingham; 5♂ Beaoura convoluta pharate pupae, Weeragua, Cann River West Branch off Monaro Hwy (-37.37295° 149.19899°), 10-xi-2015, Z. Billingham; 2♂ Beaoura convoluta pharate pupae, Glencairn, Macalister River (-37.52180° 146.56665°), 12-xi-2015, Z. Billingham; 2♂ Beaoura convoluta pharate pupae, Glen Valley , Big River off Omeo Hwy (-36.93300° 147.47300°), 28-xi-2015, Z. Billingham; 1♂ Beaoura convoluta pharate pupa, Buchan, Buchan River (-37.49570° 148.17200°), 1-xii-2015, Z. Billingham ( ZB). (All Victoria) .

Description. Elongate cylindrical in form, the terminal segment noticeably narrower than the remainder of abdomen. Head and thorax off-white to pale yellow, abdomen concolorous or darkening to brown in some mature specimens ( Fig. 51 ). Head with pronounced cephalic crest along the vertex, multiple long setae arising from the furrow formed between this crest and the antennal sheaths. Mesothorax smooth and lacking respiratory horns ( Fig. 52 ). Wing pads not extending beyond the second abdominal segment. Leg sheaths not exceeding the third abdominal segment, the fore and hind leg sheaths noticeably longer than the mid leg sheath. Abdominal integument lacking armature and only sparsely setose. The dorsal surface of the cauda may bear the vestigial remains of the larval spiracular lobes, appearing as small curled finger-like processes or as little more than raised lumps. Dorsal cauda also bearing paired lobes, each with U-shaped distal margin, the edges drawn into fine points ( Fig. 53 ). Cauda ventrally rounded and smooth.

Discussion. The absence of thoracic respiratory horns and the setose cephalic crest readily distinguishes the pupae of Ozeoura from any other known Australian limoniid pupae. Pharate male pupae can be identified to species through dissection of the cauda, insufficient material is available to identify species specific characters among non-pharate and female specimens.

Figures

Figure 51. Ozeoura convoluta pupae.

Figures 52, 53. Ozeoura pupa. (52) head and thorax, lateral; (53) cauda, dorsal.