New records of Asian and Australopapuan Cassidinae, with a ...

558
LECH BOROWIEC
slightly elevated arcuate folds which are connected with transverse postscutellar
fold. Principal impressions absent. Punctuation of elytra regular, rows impressed,
punctures coarse, distance between punctures in rows on whole disc smaller than
puncture diameter. Punctures on slope as coarse as in anterior part of disc,
punctures in sutural rows the same size as in lateral rows. Marginal row distinct,
its punctures only distinctly coarser than in submarginal row. Intervals moderately
wide, in sutural half of disc approximately twice wider than rows, on sides of disc
as wide as to slightly narrower than rows. Surface between punctures mostly
regular, without transverse folds. Explanate margin of elytra subhorizontal, in the
widest part wider than half of each elytron, shallowly and densely punctate,
surface appears slightly irregular. Elytral epipleura bare.
Clypeus narrow, slightly longer than wide, with very fine clypeal grooves,
visible only in apex of clypeal plate (fig. 23). Surface glabrous, with several fine
punctures. Labrum shallowly emarginate. Prosternal process strongly expanded
apically, on sides impunctate, apex rhomboidal, with few large punctures, its
surface appears slightly longitudinally grooved.
Antennae elongate, exceeding lateral margin of pronotum by their last two
segments. Length ratio of antennal segments: 100:55:88:82:66:55:60:55:60:64:112.
Segment 3 approximately 1.6 times as long as 2 and only slightly longer than
segment 4 (Fig. 23).
Tarsi moderately broad, last segment not longer than the third, without
projecting flanks, claws not reaching beyond marginal setae, simple (fig. 24).
Aedeagus not examined.
TYPES
Holotype: “THAILAND, Prae, 1934, no collector name”; paratype: the same
data (holotype and paratype preserved at the Department of Systematic Zoology
and Zoogeography, University of Wroc³aw, Poland.
ETYMOLOGY
Named after its terra typica.
Cassida thailandica n. sp.
DIAGNOSIS
It belongs to the group of small Oriental species with yellow ventrites,
immaculate explanate margin of elytra, and elytra with yellow relief on black
ground colour. The group comprises also Cassida amaranthica MEDVEDEV et
EROSHKINA, C. catenata (BOHEMAN), C. circumdata HERBST, C. gentilis SPAETH,
C. mindanaoensis (SPAETH), C. perplexa (CHEN et ZIA), C. physodes (BOHEMAN),
and C. viridiguttata (CHEN et ZIA). All differ from C. thailandica in claws
appendiculate or apparently appendiculate (in C. thailandica claws are simple,