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written and typeface), e) “PLATYCOELIA<br />

SIMPLICIOR OHAUS M LECTOTYPE<br />

A.B.T.SMITH 2002” (red label, handwritten<br />

and typeface). Lectotype here designated.<br />

See Methods and Materials section for a<br />

statement <strong>of</strong> taxonomic purpose. Ohaus<br />

(1909b) did not explicitly state how many<br />

specimens were in the type series. The existence<br />

and location <strong>of</strong> paralectotypes are unknown.<br />

Type locality: Tafí del Valle, Tucumán,<br />

Argentina.<br />

DESCRIPTION. Male (n=4). Length 16.6-<br />

17.7 mm, width 9.2-9.5 mm. Color <strong>of</strong> dorsal<br />

surface olive green, ventral surface yellowishgreen.<br />

Body ovate, convex. Head: Dorsal surface<br />

glabrous. Frons densely punctate,<br />

clypeus rugose, punctures moderate. Frons<br />

not depressed. Frontoclypeal suture complete.<br />

Clypeal apex rounded. Eyes separated by approximately<br />

3.7 transverse eye-widths. Labrum<br />

densely punctate, with moderately<br />

large, setose punctures, setae tawny. Apex <strong>of</strong><br />

labrum with small, triangular, medial tooth,<br />

apex <strong>of</strong> tooth weakly overlapping apex <strong>of</strong> mentum.<br />

Mandibular scissorial region with 2<br />

teeth, molar region with strong lamellae.<br />

Maxilla with 3 cup-shaped teeth. Mentum<br />

apical tooth curved into oral cavity. Antenna<br />

9-segmented; club approximately equal to<br />

other segments combined, approximately<br />

equal to length <strong>of</strong> frons. Pronotum: Surface<br />

glabrous, densely punctate, with small and<br />

moderate punctures. Marginal bead weak laterally,<br />

absent elsewhere. Elytron: Surface glabrous;<br />

longitudinal striae impressed,<br />

punctate; punctures moderate; intervals<br />

sparsely punctate, punctures moderate. Suture<br />

apically angled, without acute spine<br />

(sometimes with weak nub). Pygidium: Width<br />

approximately 1.9 times length medially. Surface<br />

weakly convex, moderately to densely<br />

punctate; punctures moderately large to moderate,<br />

setose (near apex); setae short, tawny.<br />

Venter: Thorax densely setose (except moderately<br />

setose medially), tawny colored.<br />

Mesothoracic process weakly projecting anteriorly<br />

past mesocoxa; cylindrical, dorsoventrally<br />

flattened. Abdomen sparsely<br />

setose, setae tawny. Apical spiracles not ex-<br />

MONOGRAPHIC REVISION OF PLATYCOELIA 63<br />

truding. Legs: Protibia with 3 teeth; 2 apical<br />

teeth subequal in size, third tooth short, obsolete.<br />

Mesotibia and metatibia widest medially.<br />

Protarsomeres 2-4 wider than long,<br />

cup-shaped. Protarsomere 4 with internoapical<br />

stridulatory ridge. Protarsomere 5<br />

with internomedial, stridulatory tooth. Mesotarsomere<br />

and metatarsomere 5 with<br />

internomedial tooth. Unguitractor plate cylindrical,<br />

with 2 apical setae. Modified protarsal<br />

claw approximately equal in length to<br />

protarsomere 5, thickened and elongate<br />

when compared with other claw, dorsoventrally<br />

flattened, apex unevenly bifurcate.<br />

Modified mesotarsal claw thickened, elongate<br />

when compared with other claw, dorsoventrally<br />

flattened, apex unevenly<br />

bifurcate. Modified metatarsal claw elongate,<br />

with ventral tooth, not thickened. Male Genitalia:<br />

Phallobase approximately 1.2 times<br />

longer than length <strong>of</strong> parameres. Parameres<br />

with apex rounded, setose, expanded.<br />

Female: unknown.<br />

DIAGNOSIS. This species is distinguished<br />

from all other species in the genus Platycoelia<br />

by the following combination <strong>of</strong> characters:<br />

frons with scattered lateral setae; labrum<br />

with a broad, triangular apical tooth strongly<br />

overlapping the mentum; antenna 9-segmented;<br />

mesothoracic process cylindrical;<br />

protibial apical tooth acuminate; protarsomere<br />

5 with an internoapical stridulatory<br />

tooth; modified mesotarsal claw with the apex<br />

bifurcate, dorsoventrally flattened; paramere<br />

with apex distinctly expanded.<br />

DISTRIBUTION (Fig. 46). Known from<br />

Tucumán Province, Argentina.<br />

LOCALITY DATA. 4 specimens examined<br />

from BMNH, HAHC, ZMHB.<br />

ARGENTINA (4). TUCUMÁN (4): Cumbre del<br />

Garrabatal, Siambón, Tafí del Valle.<br />

TEMPORAL DATA. February (1), December<br />

(1).

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