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Scarabaeoidea of Southern South America Links |
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Scarab Guide Links
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Aulacopalpus punctatus (Fairmaire and
Germain, 1860)
Tribostethes punctatus Fairmaire and Germain 1860:268. |
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Figure 17. Parameres in caudal view of
Aulacopalpus punctatus. |
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Distribution of Aulacopalpus ciliatus, Aulacopalpus clypealis, Aulacopalpus
pilicollis, and Aulacopalpus punctatus. |
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Description. Male (n=35): Length 13.0-17.2 mm. Width 6.7-8.8 mm. Color: dorsally
reddish-brown to dark brown, pronotum with greenish reflections. Head: Dorsal
surface densely punctate with moderately large punctures; moderately setose adjacent to
lateral margin; setae long, slender, tawny to yellowish-brown. Frontoclypeal suture weakly
bisinuate. Labrum with apex vertically produced with respect to clypeus, moderately
produced medially with triangular tooth. Maxillary palpus with terminal segment enlarged,
moderately elongate, with sulcus. Mentum with surface moderately setose, apex
appearing bidentate. Antenna 10-segmented, club slightly shorter than combined basal
segments. Pronotum: Midline weak to absent. Surface moderately to densely punctate
with moderately large-sized punctures; sometimes moderately setose near lateral margins;
setae long, slender, tawny to yellowish-brown. Scutellum: Surface moderately punctate,
punctures moderately-sized. Shape parabolic, 1.5 times wider than long medially.
Elytron: Surface glabrous with rugose appearance; longitudinal striae punctate, weakly
impressed to not impressed; punctures moderately-sized, separated by 2-6 puncture
widths. Intervals rugose. Epipleuron with row of thick setae present just ventral to bead.
Pygidium: Width 2.0 times length medially. Surface weakly rugose; moderately setose;
setae short to long, tawny to yellowish-brown. Venter: Thorax densely setose; setae long,
tawny to yellowish-brown. Legs: Protibia with 3 subequally large teeth in apical half.
Tarsal claws with modified claw slightly thickened when compared
with other claw, apex bifurcate. Tarsomere 5 without ventromedial tooth. Meso- and metatibia with apical spurs slender, acute. Mesotibial apex with 15-17
spinules. Metatibial apex with 22-26 spinules. Parameres: Figure 17. Basally without
broad, medial furrow.
Female (n=4): Length 15.9-17.4 mm. Width 8.4-9.7 mm. As male except in the
following respects. Head: Antennal club shorter that combined basal segments. Legs:
Tarsal claws with modified claw with ventral tooth, not thickened
when compared with other claw, apex not bifurcate. Metatibia with apical spurs slightly
broader, blunter. |
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Diagnosis. This species is distinguished from all other species in the genus
Aulacopalpus by the following combination of characters: antennal club not
elongated (length much shorter than head); pronotum with greenish reflections,
conspicuous punctures; elytron usually dark brown with rugose appearance;
all male tarsal claws with modified claw slightly thickened when compared
with other claw and with apex bifurcate; all female tarsal claws with modified
claw with a ventral tooth; tarsomere 5 without ventromedial tooth; parameres
basally without broad, medial furrow. |
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Distribution (see map). Valdivia to Llanquihue, Chile.
Locality Data. Based on 39 specimens examined from CMNC, FMNH,
MNHN, MNNC, NMPC, PVGH, UNSM, ZMHB.
CHILE (35). LLANQUIHUE (3): Frutillar, No Data. OSORNO (15): Trinquincahin,
No Data. VALDIVIA (11): Isla Teja, Llancahué, Santo Domingo,
Valdivia. NO DATA (6).
NO DATA (4). |
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Temporal Data. April (6), May (9). |
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Remarks. Although Fairmaire and Germain’s (1860) original description
and Fairmaire’s (1883) later comments regarding Tribostethes punctatus are
vague, they can only refer to one species. The "brown-green-bronze" color,
the green pronotum with large punctures, the rugopunctate elytra, and the fact
that the type locality is Valdivia leave no doubt as to the identity of A. punctatus.
The character states of the lectotype of Amblyterus variabilis fall within
the parameters of A. punctatus. I therefore synonymized the name Amblyterus variabilis under Aulacopalpus punctatus. Ohaus (1905, 1909) and Gutiérrez
(1947, 1949) both misapplied the name A. punctatus to some individuals of
the species A. pilicollis. |
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Literature cited.
Fairmaire, L. 1883. Coléoptères de Magellan et de Santa-Cruz. Annales de la Société
Entomologique de France (series 6) 3:483–506.
Fairmaire, L., and P. Germain. 1860. Coleoptera Chilensis. Revue Zoologique (second
series) 12:267–269.
Gutiérrez, R. 1947. Escarabajos comunes a Chile y la Argentina (Col. Scarabaeidae).
Revista de la Sociedad Entomológica Argentina 13:309–314.
Gutiérrez, R. 1949. Notas sobre Scarabaeidae Neotropicos. Anales de la Sociedad Científica Argentina 148:9–35.
Ohaus, F. 1905. Revision der amerikanischen Anoplognathiden (Coleoptera lamellicornia).
Stettiner Entomologische Zeitung 66:120–167.
Ohaus, F. 1909. Nachträge und Berichtigungen zu meiner Revision der Brachysterniden
(Coleopt. lamellicornia). Stettiner Entomologische Zeitung. 71:3–26. ["1910"].
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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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