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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 pygidialis Ohaus, 1905
Aulacopalpus pygidialis Ohaus 1905:139. |
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Figure 19. Parameres in caudal view of
Aulacopalpus pygidialis. |
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Distribution of Aulacopalpus pygidialis, Aulacopalpus valdiviensis,
and Aulacopalpus viridis. |
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Description. Male (n=22): Length 14.6-18.5 mm. Width 7.6-9.5 mm. Color: dorsally
brown to greenish-brown, head and pronotum dark brown to brown with greenish
reflections; venter brown. Head: Dorsal surface with margin sparsely setose; setae long,
slender, tawny to cream-colored. Frontoclypeal suture weakly bisinuate. Clypeal surface
brown, rugose. Frons green to brown with greenish reflections, densely punctate. Labrum
moderately produced at middle, rounded. Maxillary palpus with terminal segment slightly
shorter than basal 3 segments, with sulcus. Mentum with surface moderately setose;
apex reflexed into oral cavity. Antenna 10-segmented, club greatly elongated (longer
than combined basal segments), flattened. Pronotum: Midline weakly punctate. Surface
moderately to densely punctate and moderately setose; punctures moderately large; setae
long, slender, tawny to cream-colored. Scutellum: Shape parabolic: 1.2 times wider than
long medially. Surface densely punctate, moderately setose; punctures moderately large;
setae long, slender, tawny to cream-colored. Elytron: Surface glabrous; longitudinal striae
punctate, weakly impressed; punctures moderately-sized, separated by 1-4 puncture
widths; intervals sparsely punctate with moderately-sized punctures. Epipleuron with row
of dense setae just ventral to bead present medially, absent in apical and basal 1/5.
Pygidium: Width 1.6 times length medially. Surface moderately punctate, moderately
setose; punctures moderate-sized; setae tawny. Venter: Thorax densely setose; setae long,
tawny. Legs: Protibia with 3 subequally large teeth in apical half. Protarsal claws with modified claw slightly thickened when compared with other claw, apex weakly
bifurcate (often worn, appearing simple). Meso- and metatarsal claws simple. Tarsomere 5 with ventromedial tooth. Meso- and metatibia with apical
spurs slender, acute. Mesotibial apex with 12-13 weak spinules. Metatibial apex with
18-20 weak spinules. Parameres: Figure 19. Basally without broad, medial furrow.
Female (n=1): Length 16.4 mm. Width 8.2 mm. As male except in the following
respects. Head: Antennal club not elongated and flattened, equal to or less than length
of terminal segments. Legs: Tarsal claws simple. Meso- and metatibia with apical spurs
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 elongated
(length equal or slightly shorter than head); head and pronotum dark
brown to brown with greenish reflections; elytra brown to greenish brown;
male protarsal claws with modified claw slightly thickened when compared
with other claw and with apex weakly bifurcate (often worn and appearing
simple); female protarsal claws simple; meso- and metatarsal claws simple in
both sexes; and tarsomere 5 with ventromedial tooth; parameres basally without
broad, medial furrow. |
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Distribution (see map). Chile from Concepción to Llanquihue. |
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Locality Data. Based on 23 specimens examined from CMNC, FMNH,
MNNC, ZMHB.
CHILE (21). CONCEPCION (1): Concepción. LLANQUIHUE (8): Llanquihue,
Maullín. OSORNO (11): Pucatrihue Costa. NO DATA (1).
NO DATA (2). |
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Temporal Data. August (11), September (3), October (1), November (5). |
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Remarks. Ohaus (1905) described Aulacopalpus pygidialis using only male
specimens. This is the first time the female has been described. |
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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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