Dinotoperla thwaitesi Kimmins

Mynott, Julia H, Suter, Phillip J & Theischinger, Gunther, 2017, Revision of the genus Dinotoperla Tillyard, 1921 (Plecoptera: Gripopterygidae) using morphological characters and molecular data: Establishes two new genera, three new species and updates the larval taxonomy, Zootaxa 4224 (1), pp. 1-76 : 40-42

Dinotoperla thwaitesi Kimmins

( Fig. 23 A–D)

Larva. Remarks. Kimmins (1951) described the adult male. The species was later synonymised with D.

serricauda by McLellan (1971). Yule (1984) reinstated D. thwaitesi and stated that Kimmins’ (1951) female described under D. fontana was actually D. thwaitesi . Yule (1984) mentions the habitat for the larvae but does not describe the larvae. The association with adults for D. thwaitesi has been confirmed using genetic methods.

Material examined: Victoria: 1 x larva: Glenelg River at Dergholm. (EPA Site Code JIG). -37.36692, 141.24234, Collected : 3-Nov-11, Collectors: EPA Victoria, Accession number: JMH971 . 1 x adult male: Loddon River on Butlers Lane. -37.27259, 144.24017, Collected : 10-Oct-11, Collectors: EPA Victoria, Accession numbers: JMH1175 . 1 x larva: Murray River at Tom Groggin Camp Ground. -36.54193, 148.12829. Collected : 2-Dec-09, Collectors: JM Webb, J Mynott, M Shackleton & S Moore, Accession number: JMH1231. 2 x larvae: Middle Creek at Bogong Village (EPA Victoria Site Code: AAN), Collected : 24-Nov-13, Collectors: EPA Victoria, Accession numbers: JMH1832, JMH1833 . 1 x larva: Tributary of Running Jump Creek—Mt Buffalo (EPA Site Code CBY). -36.76617, 146.78246. Collectors: Z Billingham, Accession number: JMH1260. Yarra Ranges National Park: 1 x larva: Cement Creek - West branch crossing Cement Creek Road. -37.71433, 145.74733. Collected : 9-Oct-12, Collectors: J Mynott & S Coates, Accession number: JMH1257. Otways National Park: 1 x larva: Erskine River, below Erskine Falls . -38.51399, 143.91499. Collected : 30-Oct-12, Collectors: J Mynott & P Suter, Accession number: JMH1253. Alpine National Park: 1 x adult male: Jamieson River at junction Mt Sunday / Mitchell Tracks. -37.34242, 146.37291. Collected : 7-Oct-11, Collectors: J Mynott & R Brady, Accession number: JMH1167. 1 x larva: Jamieson River at junction Mt Sunday / Mitchell Tracks. -37.34242, 146.37291. Collected : 7-Oct-11, Collectors: J Mynott & R Brady, Accession number: JMH1688. 1 x larva: Nelse Creek off Healthy Spur Waking Track. -36.85205, 147.329545. Collected : 19-Jan-11, Collectors: S Suter & E Silvester, Accession number: JMH1691. 1 x adult female (brachypterous): Small creek off Summit Road, near Mt McKay. - 36.87075, 147.25506. Collected : 14-Jan-10, Collectors: J Mynott & M Shackleton, Accession number: JMH1219. 1 x larva: Small creek off Summit Road, near Mt McKay. -36.87 0 75, 147.25506. Collected : 14-Jan-10, Collectors: J Mynott & M Shackleton, Accession number: JMH1221. Grampians National Park: 1 x larva: MacKenzie Falls , downstream. -37.15299, 142.49614. Collected : 26-Nov-08, Collectors: JM Webb & SE McCartney, Accession number: JMH186. 1 x larva: Rose Creek at Burrong Falls, Rose Creek Road. -37.13458, 142.36703. Collected : 16- Oct-12, Collectors: J Mynott & R Williams, Accession number: JMH1242. Mt Cole State Forest : 1 x adult male: Shepherds Creek by Chinaman Camp Ground - Mt Cole. -37.24818, 143.19842. Collector: Z. Billingham, Accession number: JMH1162. New South Wales: Kosciuszko National Park : 1 x adult female: Small creek approximately 1.5km along Summit Walking Track from Charlottes Pass. -36.44059, 148.31599. Collected : 4-Jan- 13, Collectors: J Mynott & M Carey, Accession number: JMH1224. 1 x larva: Alpine Creek at chain bay on Snowy Mountains Highway. -35.91908, 148.59179. Collected : 30-Nov-09, Collectors: JM Webb, J Mynott, M Shackleton & S Moore, Accession number: JMH1245. 1 x larva: Gang Gang Creek at crossing on Snowy Mountains Highway. -35.92367, 148.59217. Collected : 6-Jan-13, Collectors: J Mynott & M Carey, Accession number: JMH1236. 1 x adult male (brachypterous): Small creek approximately 1km from Charlottes Pass, Summit Road. -36.43072, 148.33497. Collected : 2-Jan-13, Collectors: J Mynott & M Carey, Accession number: JMH1164. 1 x larva: Small creek approximately 1km from Charlottes Pass, Summit Road. -36.43072, 148.33497. Collected : 2-Jan-13, Collectors: J Mynott & M Carey, Accession number: JMH1223. 1 x adult female (brachypterous): Seep approximately 1km along Summit Walking Track from Charlottes Pass. -36.43694, 148.32064. Collected: 4-Jan- 13, Collectors: J Mynott & M Carey, Accession number: JMH1225. 1 x adult male: Prussian Creek at weir beside Summit Rd. -36.38861, 148.44549. Collected : 1-Dec-09, Collectors: JM Webb, J Mynott, M Shackleton & S Moore, Accession number: JMH1183. 1 x adult male: Leatherbarrel Creek on Alpine Way. -36.5256691, 148.19333. Collected : 2-Dec-09, Collectors: JM Webb, J Mynott, M Shackleton & S Moore, Accession number: JMH107. 2 x adult male: Sawpit Creek at Summit Road. -36.35168, 148.56599. Collected : 30-Nov-09, Collectors: JM Webb, J Mynott, M Shackleton & S Moore, Accession numbers: JMH1649, JMH1650.

Length: 5.5–6.2 mm.

Colour: Dark brown with paler legs and wingpads.

Body: Robust.

Head: Dark mottling in posterior area of head; dorsal surface covered with short robust setae; a single very long robust setule present between ocelli and scape, and medially near eye. Antennae longer than body; robust, tapering slightly near the tips.

Thorax: Pronotum quadrate, width greater than length; dark mottling in medial area. Meso- and meta-nota with raised pale bosses at base of wingpads, extending into a darker sunken area; highest point of bosses with distinct patch of robust setae. Dorsal surface of all thoracic segments with long robust setae that taper to a point, hind margins with similar setae. Hind margin of metanotum with a pair of single very long robust setae either side of medial suture; anterior margin of pronotum with similar single setae present.

Legs: Outer margin of femora with scattered long fine setae, and peg-like setae in distal area; outer margin of tibiae with fringe of long fine setae; inner margin of tibiae with long robust setae present; outer surface of femora and tibiae with long robust setae tapering to a point. Distal margin with robust bladed setae present. Femora outer surface dark with pale medial spot (dark stripe near outer and inner margin may be present); tibiae with thin band in proximal area and dark stripe near inner margin. Inner surface of femora with broad dark stripes that are approx. half the length of segment.

Abdomen: Tergites with robust setae that taper to a point on surface and hind margin, setae on hind margin may have curled end which looks similar to sickle-shaped setae. Tergite X with similar setae to other tergites; hind margin raised and produced to a rounded point. Gills light, orange. Cerci shorter than abdomen; segments elongating into very long and thin segments, elongating by segment 9; long setae present until segment 13. Paraprocts broad, length subequal to basal width.

Figures

FIGURE 23. Dinotoperla thwaitesi: (A) dorsal overview; (B) dorsal view of hind leg; (C) dorsal surface of thorax; (D) hind tergites showing setation on the segment surface and hind margin of tergite X.