Download full text (PDF 4.5 MB) - University of Nebraska State ...

MONOGRAPHIC REVISION OF PLATYCOELIA 135
rated by approximately 3.6 transverse eyewidths.
Labrum densely punctate, with moderately
large, setose punctures, setae tawny.
Apex of labrum with acute, triangular, medial
tooth, apex of tooth not overlapping apex of
mentum (Fig. 3). Mandibular scissorial region
with 2 teeth, molar region with strong lamellae.
Maxilla with 3 apical teeth, interior 2
teeth bifurcate. Apex of mentum with medial
notch. Antenna 10-segmented; club approximately
equal to segments 2-7, approximately
equal to clypeal length. Pronotum: Surface
glabrous, moderately punctate, with small or
moderate punctures. Marginal bead weak laterally,
absent elsewhere. Elytron: Surface glabrous;
longitudinal striae weakly impressed,
weakly punctate; punctures moderate with
dark coloration; intervals moderately punctate,
punctures moderate. Suture angled
apically with weak nub or spine. Pygidium:
Width approximately 2.1 times length medially.
Surface weakly convex, moderately to
densely punctate; punctures small or moderate,
setose (near apical margin); setae short,
cream colored. Venter: Thorax densely setose
(except glabrous medially), setae white. Mesothoracic
process strongly produced, projecting
anteriorly to procoxa; shape conical-elongate,
apex rounded, dorsoventrally flattened (Fig.
9). Abdomen sparsely setose, setae white. Apical
2 spiracles extruding, cylindrical. Legs:
Protibia with 3 teeth in apical half; 2 apical
teeth subequal in size, third tooth shorter.
Mesotibia and metatibia widest medially.
Protarsomeres 2-4 wider than long, cup-shaped.
Protarsomere 4 with internoapical stridulatory
ridge. Protarsomere 5 with internomedial
stridulatory tooth. Mesotarsomere and
metatarsomere 5 without internal tooth or
swelling. Unguitractor plate cylindrical, with 2
apical setae. Modified protarsal claw with
length greater than protarsomere 5, thickened
and elongate when compared with other claw,
laterally flattened, apex unevenly bifurcate
(Fig. 14). Modified mesotarsal and metatarsal
claws elongated with ventral tooth, not thickened.
Male Genitalia: Phallobase approximately
1.1 times longer than length of
parameres. Parameres with apex rounded,
weakly expanded.
Female (n=23). Length 18.3-23.7 mm,
width 10.1-12.1 mm. As male except in the fol-
lowing respects. Head: Antennal club slightly
shorter than segments 2-7. Venter: Apical spiracles
weakly extruding or not extruding.
Legs: Protarsomere 4 without internoapical
stridulatory ridge. Protarsomere 5 without
internal tooth. Modified protarsal claw with
ventral tooth, not thickened.
DIAGNOSIS. This species is distinguished
from all other species in the genus Platycoelia
by the following combination of characters:
frontoclypeal suture complete; apex of the labrum
with a broad, triangular tooth weakly
overlapping the mentum; mentum with a medial
notch; antenna 10-segmented; elytron
with distinct, yellow, longitudinal lines on
striae 3 and 5; elytral apices not capable of
completely covering the pygidium; apex of the
elytral suture without an acute spine; metasternum
and abdominal sternites dark brown to
black (at least medially); mesothoracic process
projecting apically to the procoxa; apical
abdominal spiracle weakly protuberant;
mesotarsomere 5 and metatarsomere 5 without
an internal tooth; parameres with the
apex rounded, not expanded.
DISTRIBUTION (Fig. 66). Andes Mountains
of southern Perú and central Bolivia.
LOCALITY DATA. 48 specimens examined
from AMNH, ANCB, BMNH, DEIC, DJCC,
HAHC, HNHM, ISNB, MNHN, SMTD,
USNM, ZMHB.
PERÚ (6). CUSCO (4): Marcapata, Pilcopata
(40-53 km W), Valle de Lares (75 km NW
Calca). NO DATA (2).
BOLIVIA (40). COCHABAMBA (5): Carrasco,
Cochabamba, Limbo. LA PAZ (24): Chaco, La
Paz, Sendá Uyuni – Qucara, Tojoloque,
Yanacachi, Yungas de La Paz. SANTA CRUZ
(1): Comarapa. NO DATA (10).
NO DATA (2).
One specimen labeled “Equateur Baños”
was considered to have no data. This locality
is far out of the known range for the species.
TEMPORAL DATA. January (1), February
(6), October (4), December (1).