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Scarabaeoidea of Southern South America Links |
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Scarab Guide Links
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Classification |
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Aulacopalpus Guérin-Menéville
Aulacopalpus Guérin-Méneville 1838:57. |
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Aulacopalpus pilicollis male.
Illustration by Dan Schmidt. |
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Type species.
Aulacopalpus viridis Guérin-Méneville fixed by monotypy.
Tribostethes Curtis 1845:448. Type species Brachysternus castaneus Laporte
fixed by monotypy. NEW SYNONYMY.
Bembegeneius Solier 1851:84. Type species Bembegeneius fulvescens Solier
fixed by monotypy. Placed in synonymy with Aulacopalpus by Ohaus
(1918).
Sulcipalpus Harold 1869a:1232. Type species Aulacopalpus viridis Guérin-
Méneville. Sulcipalpus was proposed as a replacement name for Aulacopalpus,
but the replacement name is unjustified emendation. Sulcipalpus is a junior objective synonym of Aulacopalpus and has the same
type species.
Pseudadelphus Arrow 1899:369. Type species Tribostethes ciliatus Solier fixed
by monotypy. Placed in synonymy with Aulacopalpus by Ohaus (1905).
Amblyterodes Germain 1905:470. Type species Aulacopalpus viridis Guérin-
Méneville, designated by Smith (2002).
Placed in synonymy with Aulacopalpus by Ohaus (1918).
Aegolasia Kolbe 1907:112. Type species Aegolasia michaelseni Kolbe fixed
by monotypy. Placed in synonymy with Aulacopalpus by Martínez
(1975). |
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Description. Length 10.0-20.0 mm. Width 5.5-10.8 mm. Color: Dorsally green to
brown, ventrally brown. Head: Dorsal surface punctate and setose; punctures dense,
moderately large; setae long, slender, tawny to cream-colored. Frontoclypeal suture complete.
Clypeal apex rounded, moderately reflexed. Labrum with apex vertically produced with respect to clypeus, moderately produced at middle, rounded or triangular. Mandibles
with proximal molar lobe well developed with more than 10 black lamellae or reduced
with less than 10 black lamellae. Maxillary surface moderately setose; maxilla with 3-5 poorly defined teeth on 2 elevated ridges or reduced with no distinguishable teeth on
1 weakly elevated ridge; maxillary palpus with terminal segment longer than basal 3
segments, with deep sulcus. Mentum with surface moderately setose, apex moderately
produced or reflexed into oral cavity. Antenna 10-segmented (sometimes appearing 9-
segmented) with 3-segmented club. Pronotum: Form widest at middle, basomedially
protuberant towards posterior. Surface moderately to densely punctate with moderately
large punctures, setae usually present; setae long, slender, tawny to cream-colored. Marginal
bead present laterally. Scutellum: Surface glabrous, moderately punctate with moderately
large punctures. Elytron: Surface glabrous to sparsely setose; setae long, slender,
tawny to cream-colored (never scale-like); longitudinal striae punctate or moderately
impressed. Epipleuron rounded, marginal bead complete; row of dense setae just ventral
to bead present medially, sometimes absent in apical and basal 1/5. Membranous border
thickened apically. Hind Wing: Leading margin with row of setae on apical half. Vein
AA1+2 about 1/4 length of AA3+4. Pygidium: Surface evenly convex, sparsely to moderately
punctate, setose; setae long, slender, tawny to cream-colored (never scale-like).
Apex evenly rounded. Venter: Thorax densely to moderately setose; setae usually long,
tawny. Prothoracic and metathoracic processes absent. Abdominal sternites moderately
setose; setae moderately long, tawny, yellowish-brown, or cream-colored. Apical spiracle with or without supraspiracular ridge. Apical abdominal sternite of female not deeply
emarginate. Legs: Coxae, trochanters, and femora moderately setose; setae long, tawny,
yellowish-brown, or cream-colored. Protibia with 3 teeth in apical half. Male protarsal
claws with modified claw thickened and bifurcate (sometimes weakly), male meso- and
metatarsal claws with modified claw thickened and bifurcate or with all claws simple.
Female tarsal claws with ventral tooth on modified claw or with all claws simple. Protarsomere
4 with or without recurved spines. Tarsomere 5 with or without ventromedial
tooth. Unguitractor plate cylindrical, produced beyond apex of tarsomere 5, with 2 apical
setae. Parameres: Form symmetrical in caudal view. |
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Diagnosis. This genus is distinguished from all other genera of Neotropical
Anoplognathini by the following combination of characters: elytron with membranous
border (more pronounced at apex of elytron), metathoracic process
absent, parameres with apices widely separated (not close together), unguitractor
plate with 2 setae, tarsomere 5 usually without tooth (two species have
the tooth), claws usually split or toothed (three species have some or all claws
simple), last abdominal sternite (in females) with apex entire (not emarginate),
and elytra glabrous or with setae hair-like (not thick or scale like). |
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Distribution. Known from central Chile and west-central Argentina
south to Tierra del Fuego. |
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Literature cited.
Martínez, A. 1975. Contribución al conocimiento de los Pachydemini neotropicales
(Col. Scarabaeidae, Melolonthinae). Entomologischen Arbeiten aus dem Museum
G. Frey 26:227-251.
Ohaus, F. 1905. Revision der amerikanischen Anoplognathiden (Coleoptera lamellicornia).
Stettiner Entomologische Zeitung 66:120-167.
Ohaus, F. 1918. Scarabaeidae: Euchirinae, Phaenomerinae, Rutelinae. Coleopterorum
Catalogus 20:1-241. ["1915"].
Smith,
A. B. T. 2002. Revision of the South American Endemic genus Aulacopalpus Guérin-Ménville with phylogenetic and biogeographic
analyses of the subtribe Brachyisternina (Coleoptera: Ruteliinae:
Anoplognathini: Brachysternina). Coleopterists Bulletin 56: 379-437. |
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Excerpt from:
Smith,
A. B. T. 2002. Revision of the South American Endemic genus Aulacopalpus Guérin-Ménville with phylogenetic and biogeographic
analyses of the subtribe Brachyisternina (Coleoptera: Ruteliinae:
Anoplognathini: Brachysternina). Coleopterists Bulletin 56: 379-437. |
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