Pistosia maculata Weise, 1905

Sekerka, Lukáš, 2015, Wallacea, Pistosia and Neodownesia: three distinct genera and their tribal placement (Coleoptera: Chrysomelidae: Cassidinae), Acta Entomologica Musei Nationalis Pragae 55 (2), pp. 713-743 : 725

Pistosia maculata Weise, 1905

( Fig. 6 )

Pistosia maculata Weise, 1905: 95 (original description); WEISE (1911a): 54 (catalogue); WEISE (1911b): 82 (catalogue, colour Fig.); HELLER (1916): 116 (faunistics [misidentification = P. testacea ]); GRESSITT (1957): 301 (South

Pacific fauna); UHMANN (1958): 229 (catalogue); UHMANN (1960): 23 (noted); KIMOTO (2000): 144 (catalogue).

Type locality. ‘ Celebes orientalis:Tombugu’ [= Indonesia, Central Sulawesi Province, Morowali Regency,Tombuku [or Sakita], approx. 02°33′S, 121°58′E].

Type material studied. SYNTYPE: pinned, ‘Ost - Celebes | Tombugu | Kühn - Ribbe [orange, hw by J. Weise, cb] || Ost-Celebes | Tombugu | H. Kühn 1885. [w, p, cb] || 40. [w, hw, cb] || 106046 [w, p, cb] || Pistosia | maculata | m [w, hw by J. Weise, cb] || Holo- [hw] | Typus [red, p, cb] || J. Weise det. [w, p, cb] || [QR Code] | http://coll.mfn-berlin. de/u/ | 18dbe9 [w, p, cb]’ ( ZMHB).

Differential diagnosis. Pistosia maculata can be easily separated from the two congeners by strongly costate elytral intervats II, IV and VI. From P. terminalis it also differs by stouter body and pronotum distinctly wider than long. Pistosia testacea differs, except for costae, in sparsely punctate pronotum.

Distribution. Indonesia: Central Sulawesi ( WEISE 1905).

Remarks. WEISE (1905) proposed the genus Pistosia for a single species P. maculata Weise, 1905 collected in Tombugu [= Tombuku or Sakita], eastern Sulawesi by H. Kühn and C. Ribbe. HELLER (1916) reported additional specimens from southern Sulawesi, however, these belong to P. testacea (see remarks under that species) thus P. maculata is so far known only from a single type specimen. WEISE (1905) did not specify number of specimens used for description, however, he gave only a single length measurement and the description itself does not indicate that he had more specimens thus it is likely the species description was based on only a single specimen.

Figures

Figs 1–7. 1 – Neodownesia mediovittata (Gestro, 1920) (Laos: Ban Song Cha, J, 8.7 mm); 2 – N. rubra Gressitt, 1953 (holotype, J, 6.5 mm); 3 – N. sita (Maulik, 1919) (Thailand: Soppong, ♀, 9.0 mm); 4 – Wallacea apicalis Gestro, 1896 (Indonesia: Mentawai Is.: Siberut, 5.3 mm); 5 – Pistosia terminalis (Baly, 1869) (holotype, 9.5 mm, © Natural History Museum, London); 6 – P. maculata (syntype, 12.0 mm, © Museum für Tierkunde, Berlin); 7 – P. testacea (Fabricius, 1801) (Indonesia: Sulawesi: Ahua Creek, 11.1 mm).