(Coleoptera: Chrysomelidae: Alticinae)
Hemipyxis Chevrolat
Hemipyxis plagioderoides |
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Hemipyxis plagioderoides |
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Distribution: East Siberia, China, Japan, India, Burma,
Vietnam, Indonesia, New Guinea, Africa.
Statistics: About 10 species in Palearctic, more than
60 species worldwide.
Host Plants: Alnus hirsuta,
Clerodendron trichotanum, Lamiun album, Mallotus,
Plantago asiatica (Gressitt & Kimoto 1963).
Comments: According to Barber & Bridwell (1940), Madge
(1988) and Pope (1992) we consider the Chevrolat name available
for this genus.
Diagnosis: Body oval, medium
sized to large. Color yellow to brown, with or without
spots, or metallic green, or blue to black with or without
metallic lustre.
Head pro-hypognathous, convex from lateral view.
Frontal ridge narrow and flat, acute apically. Antennal calli
transverse, ovate-triangular, broadly connected, delimited
dorsally from vertex and laterally by shallow furrows. Orbital
line present. Interantennal space almost equal to diameter of
antennal socket. Clypeus long. Antenna 11-segmented,
filiform.
Pronotum wide and short, broadly explanate laterally,
without any impressions. Procoxal cavity open behind. Intercoxal
prosternal process comparatively narrow, almost parallel-sided,
same width as mesosternum.
Elytra broadly oval, and broadly explanate laterally,
with well developed humeral calli, irregularly punctate. Maximum
width of elytra at apical 1/3. Epipleuron wide, horizontal,
reaching posterolateral elytral margin.
Metafemur greatly swollen. Metatibia ventrally and
sometimes laterally curved. Dorsal surface canaliculate with two
sharp marginal ridges. Large metatibial tooth inserted laterally.
First metatarsal segment comparatively short, as short as
following two segments combined.
