Cassida diomma Boisduval, 1835

Cassida Diomma Boisduval, 1835: 540 (ST! in NRS!); Kimoto and al., 1984: 55, 56; Borowiec, 1990 b: 20 (incl. fig.), 1999 d: 248, 2001 e: 515, 2009 d: 452; Mohamedsaid, 2000 b: 375; Hawkeswood, 2003: 191.

Coptocycla Diomma: Boheman, 1855: 213, 1856: 170, 1862: 425; Gemminger and Harold, 1876: 3668; Masters, 1889: 999.

Metriona diomma: Spaeth, 1903 a: 113, 1906 b: 38, 1913 d: 448, 1914 g: 142, 1932 d: 137.

Cassida strigula Montrouzier, 1855: 67 (ST! in NRS!); Boheman, 1856: 206; Kimoto and al., 1984: 54, 56; Borowiec, 1990 b: 20 (as syn. of diomma).

Coptocycla strigula: Boheman, 1862: 435; Gemminger and Harold, 1876: 3674.

Metriona strigula: Spaeth, 1915 b: 237.

Metriona diomma ssp. strigula: Spaeth, 1903 a: 133, 1914 g: 142.

Metriona diomma var. strigula: Mjöberg, 1917: 18.

Metriona strigula ssp. sudibunda Spaeth, 1915 b: 238 (ST! in BMNH, MM!); Borowiec, 1990 b: 20 (as syn. of diomma).

Metriona callosipennis Spaeth, 1903 a: 135 (ST! in MM!), 1914 g: 142, 1915 b: 235; Borowiec, 1990 b: 20 (as syn. of diomma).

Metriona callosipennis ssp. dispar Spaeth, 1903 a: 135 (ST! in MM!); Borowiec, 1990 b: 20 (as syn. of diomma).

Metriona callosipennis var. dispar: Spaeth, 1914 g: 142.

Metriona strigula ssp. callosipennis: Spaeth, 1915 b: 237.

Chirida simplaria Blackburn, 1896: 106 (HT! in BMNH!); Borowiec, 1990 b: 20 (as syn. of diomma).

Metriona simplaria: Spaeth, 1914 g: 142.

Cassida lawrencei Borowiec, 1990 b: 15 (HT! in SAM!, incl. fig.), 1994 b: 155 (as syn. of diomma).

Metriona Holmgreni: Hawkeswood, 1988: 108 (misidentification).

Host plant: Convolvulaceae: Ipomoea triloba, I. batatas (Hawkeswood, 1988).

Distr.: diomma: Nouvelle-Guinée; strigula: ?; sudibunda: Queensland: Cairns, Redlynch; callosipennis: [Queensland] Rockhampton, Peak-Downs, Cooktown; dispar: Thursday-Insulae; simplaria: N. Queensland: near Cairns; lawrencei: Australia: Daly R., N. T., N. Q., Bamaga. New Guinea Australia: Queensland, Northern Territory; Indonesia: Irian Jaya, Tanimbar; Papua New Guinea; Solomon Is.: Bougainville. Introduced to Samoa Is.

figure: habitus in colour (three forms)

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