Hydrobiosella mundagurra, Cartwright, 2010

Cartwright, David I., 2010, Studies of Australian Hydrobiosella Tillyard: a review of the Australian species of the Hydrobiosella bispina Kimmins group (Trichoptera: Philopotamidae), Memoirs of Museum Victoria 67, pp. 1-13 : 7

Hydrobiosella mundagurra sp. nov.

Figures 17–19 , 40–41

Holotype. Male , Queensland, Carnarvon Gorge Nat. Pk, 25°15‘S, 148°24‘E, 12 Nov 1990, G. Theischinger ( NMV, T-20917).

Paratypes. Queensland. 5 males (specimen CT-575 figured) , 15 females (specimen CT-607 figured), collected with holotype ( NMV) .

Other material examined. Queensland. 16 females, collected with holotype ( NMV) .

Diagnosis. Hydrobiosella mundagurra can be separated from other species in the group by the combination of harpago, which is straight and not dilated in distal half, and segment X with slender lateral pair of hooks and slender apex in dorsal view.

Description. Wings similar to those of H. arcuata (fig. 1), length of forewing: male 5.9–6.7 mm, female 6.5–8.7 mm. Forewing fork 2 long, length fork 2 about 1.5 times length of fork 1; fork 3 length about 1.6 times length footstalk; fork 4 length about 4.6 times length footstalk. Hind wing fork 1 with short footstalk; fork 3 length about 1.9 times length of footstalk.

Male. Segment IX without a noticeable notch medially on distal margin (fig. 19). Segment X mesal lobe with a pair of short hairs/bristles subapically, slightly laterally compressed; in dorsal view slender, not narrowed subapically ( Fig. 17 ), with a pair of more pigmented lateral lobes, which terminate in small, slender, slightly outward and downward projecting hooks (figs 17–18). Inferior appendages in lateral view, with basal segment length about 1.9 times maximum width, broad basally, tapered slightly distally; harpago more slender, nearly straight (fig. 18).

Female. Genitalia typical of genus, with a small rounded projection on sternite VIII mesodistally (figs 40–41).

Etymology. Mundagurra — named for the Australian Aboriginal dreaming rainbow serpent believed to have created Carnarvon Gorge.

Remarks. Six males and many females of Hydrobiosella mundagurra have been collected from the type locality in central-eastern Queensland (latitude 25°15'S).

Figures

Figures 17–25. Hydrobiosella spp. male genitalia in dorsal, lateral and part ventral views; 17–19, Hydrobiosella mundagurra sp. nov.; 17, dorsal; 18, lateral; 19, ventral, mesodistal margin of segment IX; 20–22, Hydrobiosella bispina Kimmins.; 20, dorsal; 21, lateral; 22, ventral, mesodistal margin of segment IX; 23–25, Hydrobiosella arcuata Kimmins; 23, dorsal; 24, lateral; 25, ventral, mesodistal margin of segment IX.

Figures 35–49. Hydrobiosella spp.; 35–37, Hydrobiosella yokunna sp. nov. male genitalia in dorsal, lateral and part ventral views; 35, dorsal; 36, lateral; 37, ventral, mesodistal margin of segment IX; 38–49, Hydrobiosella spp. female genitalia (part segment VIII) in lateral and (segment VIII) ventral view; 38–39, Hydrobiosella unispina sp. nov.; 38, lateral; 39, ventral; 40–41, Hydrobiosella mundagurra sp. nov.; 40, lateral; 41, female genitalia, ventral; 42–43, Hydrobiosella bispina Kimmins; 42, lateral; 43, ventral; 44–45, Hydrobiosella arcuata Kimmins; 44, lateral; 45, ventral; 46–47, Hydrobiosella woonoongoora sp. nov.; 46, lateral; 47, ventral; 48–49, Hydrobiosella thurawal sp. nov.; 48, lateral; 49, ventral.