Macroscytus australis
Creators: name: Lis, J. A.
Publisher: name: Zenodo
Year: 2000
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cydnidae
Macroscytus
Macroscytus australis

description: Macroscytus australis (ERICHSON)
(Figs 52­58)
Cydnus australis ERICHSON, 1842: 275.
Aethus leptospermi DALLAS, 1851: 119, nomen nudum.
Aethus leptospermi BUTLER in WHITE & BUTLER, 1874: 25 (syn. by SIGNORET 1883a: 483).
Aethus lifuanus MONTROUZIER, 1861: 62 (syn. by SIGNORET 1881: 647).
Hahnia (Cydnus) australis: SIGNORET 1883a: 483.
Geotomus lansbergi SIGNORET, 1883b: 48 (as landsbergi) (syn. by LIS 1996: 221).
Hahnia australis: KIRKALDY 1909: 25 [part]; DISTANT 1920: 145; MYERS 1922: 4, 1926: 510; MYERS & CHINA 1928: 379.
Geocnethus australis: HORVÁTH 1919: 246.
Philapodemus australis: WOODWARD 1953: 311 & 315; 1956: 428; HICKMAN 1978: 45; LARIVIÉRE 1995: 18.
Macroscytus australicus [sic!]: SIGNORET 1881: 647.
Macroscytus australis: LIS 1995b: 144, 1999a: 464.
DESCRIPTION
Body 5.41­7.03 mm in length, 3.09­4.18 mm in width, from castaneous to almost black, sometimes posterior margin of pronotum and entire corium slightly paler in shade.
Head dorsally wrinkled and slightly punctate, clypeus subapically with a pair of setigerous punctures bearing long hair­like setae (Fig. 53); each paraclypeus with a row of 4­7 submarginal setigerous punctures bearing long hair­like setae (Fig. 53); ocular index 3.18­4.30; interocellar index 5.5­8.0; length of antennal segments (in mm): 0.34­0.41: 0.35­0.43: 0.36­0.45: 0.40­0.45: 0.43­0.47.
Pronotal disc densely punctate, except calli and posterior margin; transverse discal impression behind calli absent or very shallow, almost indistinct; lateral margins with 8­12 submarginal setigerous punctures bearing long hair­like setae (Fig. 52); anterior convexity of propleuron sometimes with a few small punctures anteriorly, posterior convexity impunctate or with a few scattered punctures, propleural depression with a band of coarse punctures.
Scutellum densely punctate with exception of its apex and anterolateral angles.
Mesocorial disc densely evenly punctate; exocorium evenly punctate; costa moderately broad, separated from exocorium only in its basal two thirds, bearing 3­5 setigerous punctures with long hair­like setae (Fig. 52).
Male hind femur with numerous well visible denticles on dorsal margin, male hind tibia with a row of small tubercles (Fig. 54); female hind femur without denticles on dorsal margin; female hind tibia without tubercles.
Abdominal sterna almost totally impunctate, except for rows of punctures paralleling segmental sutures, and patches of small punctures around trichobothria, as well as anteriorly and posteriorly to spiracles.
Male genitalia as in Figs 55­58.
TYPE DATA
Lectotype female (designated by LIS 1999c: 207) of Cydnus australis ERICHSON: Vandiemensland [= Tasmania] (MNHU).
Lectotype female (designated by LIS 1996: 221) of Aethus leptospermi BUTLER: New Zealand (BMNH).
Lectotype male (designated by LIS 1996: 221) of Aethus lifuanus MONTROUZIER: Lifu (NHMW).
Lectotype female (designated by SYNAVE 1969: 2, as Holotype) of Geotomus lansbergi SIGNORET: Indonesia, Java Oriental, M. Ardjoeno (IRSNB).
MATERIAL EXAMINED
Lectotype of Cydnus australis, Lectotype of Aethus leptospermi, Lectotype of Aethus lifuanus, Lectotype of Geotomus lansbergi, and 37 other specimens: Australia: Queensland, Bakerville, 4 exx. (DPI, UO); Queensland, Bellenden Ker Range, 1 ex. (QMB); Queensland, Lake Broadwater via Dalby, 1 ex. (QMB); Queensland, Boggom, via Taroom, 1 ex. (QMB); Queensland, Port Denison, 2 exx. (IRSNB); New South Wales, Ryde, 2 exx. (HNHM); New South Wales, Richmond River, 2 exx. (BMH); New South Wales, Sydeny, 1 ex. (BMNH); New South Wales, Upper Tumut Gorge, Snowy Mts., 1 ex. (QMB); Northern Territory, Ayers Rock, 1 ex. (TLM); Lord Howe I., 2 exx. (SAM); Tasmania, 3 exx. (BMNH, MNHN); Western Australia, Tallering Stn., 1 ex. (WAM); Western Australia, Burnbury, 2 exx. (WAM); Western Australia, Capel, 4 exx. (WAM, UO); Western Australia, Lake Gwelup, 1 ex. (NTM); Western Australia, Clover Dale Hasd., 1 ex. (NTM);. Bismarck Archipelago: New Britain, Birara, 1 ex. (BMNH). New Caledonia: Canala, 2 exx. (MNHN); Anse Vata, 1 ex. (BMH); Hienghene, 1 ex. (HNHM). New Zealand: Motuihi I., Nr. Auckland, 1 ex. (BMH); Port Waikato, 1 ex. (BMNH).
DISTRIBUTION
Australia (incl. Tasmania and Lord Howe Island), Indonesia (Java), New Britain (first record), New Caledonia, New Zealand.
description: Published as part of Lis, J. A., 2000, A revision of the burrower-bug genus Macroscytus Fieber, 1860 (Hemiptera: Heteroptera: Cydnidae), pp. 359-509 in Genus (Wrocław) 11 (3) on pages 387-389