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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 ciliatus (Solier, 1851)
Tribostethes ciliatus Solier 1851:89.. |
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Figure 13. Parameres in caudal view of
Aulacopalpus ciliatus. |
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Distribution of Aulacopalpus ciliatus, Aulacopalpus clypealis, Aulacopalpus
pilicollis, and Aulacopalpus punctatus. |
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Description. Male (n=81): Length 12.2-15.3 mm. Width 6.7-7.4 mm. Color: dorsally
reddish-brown to dark brown, sometimes with copper (pronotum) or weak greenish (elytron and pronotum) reflections. Head: Dorsal surface densely punctate, moderately
setose; punctures moderately large; 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 absent. Surface moderately to densely
punctate with moderately-sized punctures; moderately setose in apical half and along
margins; setae long, slender, tawny to yellowish-brown. Scutellum: Surface moderately
punctate, moderately setose; punctures moderately-sized; setae long, slender, tawny to
yellowish-brown. Shape parabolic, 1.3 times wider than long medially. Elytron: Surface
glabrous; longitudinal striae punctate, weakly impressed to not impressed; punctures
moderately-sized, separated by 2-6 puncture widths. Intervals sparsely punctate with
moderately-sized punctures. 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 (similar to Fig.
6). Meso- and metatibia with apical spurs slender, acute. Mesotibial apex with 15-17
spinules. Metatibial apex with 22-26 spinules. Parameres: Figure 13. Basally with broad,
medial furrow.
Female (n=12): Length 13.0-19.0 mm. Width 7.1-10.1 mm. As male except in the
following respects. Head: Antennal club shorter that combined basal segments. Legs:
Tarsal claws (Fig. 8) 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 brown or brown with
bronze to weak green reflections; elytron usually dark brown, punctate to
weakly rugose; 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 with broad, medial furrow. |
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Distribution (see map). Coquimbo to Malleco, Chile.
Locality Data. Based on 93 specimens examined from CASC, CMNC,
CMNH, FMNH, GASC, HAHC, HNHM, MCZC, MGFT, MNHN, MNNC,
NHMB, PVGH, UNSM, USNM, VMDM, ZMHB.
CHILE (88). ARAUCO (8): Contulmo. BIO-BIO (10): No Data. COLCHAGUA
(2): San Fernando. CONCEPCION (1): Concepción. COQUIMBO
(2): Catarata Cavilolén, Parque Nacional Fray Jorge. LINARES (3): Parral.
MALLECO (1): Angol. MAULE (1): Constitución. O’HIGGINS (5): Pencahue,
Rancagua. SANTIAGO (40): Cerro Manquehue, El Canelo, El Principal,
Lagunillas, Las Condes, Leyda, Lo Valdés, Maipú, Pudahuel, Quebrada de
Macul, Santiago. TALCA (1): Vilches Alto. VALPARAISO (3): La Cruz, Quillota,
Valparaíso. NO DATA (11).
NO DATA (5). |
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Temporal Data. January (1), April (4), May (3), June (5), July (11), August
(9), September (8), October (3) November (5), December (6). |
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Remarks. Although the parameres (Fig. 13) are distinct in A. ciliatus there
is interspecific variability in the form. This can lead to confusion between A.
ciliatus and A. aconcaguensis, A. clypealis, and A. pilicollis when only the parameres are used for identification. Arias (2000) listed ‘‘pololo castaño’’ as
the Chilean common name for this species. |
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Literature cited.
Arias, E. T. 2000. Coleopteros de Chile/Chilean Beetles. Fototeknika, Santiago de Chile.
209 pp. |
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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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