Four new species of Neotropical Cyclocephalini (Coleoptera: Scarabaeidae) (*)

Four new species of Cyclocephalini are de scribed. These are Aspidolea lindae from Colombia, englemani collection <:~bbreviations used are those of Arnett and Sa muelson (1969), and the description of puncture size and depth follows my earlier usage

During collecting trips to Letícia, Colombía, in 1974, andPanamá in 1976, I col lected examples of new species in the genera Aspidolea and Mimeoma respectively. The new Stenocrates were collected near 1\nanaus, Brazil, by an entomology graouate student at the Instituto Nacional de Pesquisas da Amazônia in Manaus. These species are here described and figured in such a manner so as to enable easy identification without the use of keys. The collection <:~bbreviations used are those of Arnett and Samuelson (1969), and the description of puncture size and depth follows my earlier usage (Ratcliffe, 1975).

HOLOTYPE -
Mafe. length .13.4 mm; greatest width 7. 3 mm. Co lo r dark reddish brown, weakly shining; head black; legs, venter, base of pronotum, margins of scutellum, elytral suture, and pygidium piceous to black. Pronotum and apical umhone of elytra with faint, fuscous clouding. Head: Front very mi- nutely scabrous, densely, non-setigerously punctate; punctures small and moderate mixed, shallow. lnterocular width about 2. O transverse eye diameters as seen from above. Frontoclypea l suture distinct, weakly arcuate, margins slightly raised. Clypeus with margins beaded, a little wider than long, sides parallel , apical angles broad ly rounded, apex subtruncate, reflexed; surface densely rugo-punctate. Antennae 10-segmented, club a little longer than 2/ 3 length of basal 7 segments. Pronotum : Length-width ratio 3:3. 5; sides rounded, widest just behind middle. Anterior angle acute, basal angle broadly rounded. Anterior and lateral margins beaded, posterior margin lacking a bead. Anterior margin 5li ghtly produced at middle. Surface very minutely wrinkled as on front, moderately punctate, punctures becoming more dense laterally and sparser near anterior margin on either side of midline; punctures moderate in size, shallow, ocellate, non-setigerous. Scutellum triangular, surface similar to pronotum except a few punctures confluent. Elytra: Widest near middle; lateral margins indented siightly at humerus and a little more so behind humerus. Surface very minutely scabrous.
Di se non-setigerously punctate; punctures moderate in de:nsity, shallow, ocellate, random except for one row at suture, one vague double row in middle of disc, and one vague double row near lateral margin of disc; discai rows arcuate, becoming obsolete in apica l third. Sides similar to di se; a very feeble double row of punctures behind humeral umbone, and a feeble double row of punctures between umbone and lateral margin. Pygidium: Convex in lateral view and protuberant at middle. Di se finely scabrous, moderately punctate; punctures sma ll, shallow, non-setigerous. Base rugo-punctate to rugose .' Apical margin strongly beaded ; lateral emargination either side of middle extremely shallow , rugo-punctate . Genita/ia: . . Figs. 1-2. Legs: Foretibiae tridentate in apical half . Foretibiae with tarsomeres 1-4 e::1ch slightly shorter than one preceding it; segment 5 enlarged, about 3 times as long segment 4; inner claw greatly enlarged, narrowly and unevenly cleft at apex.

ALLOTYPE -
Female. Length 14.2 mm; greatest width 7. O mm. As holotype except 1n the following respects: Head: Front with punctures very dense, often confluent apically. Color of clypeus piceous, not black. Antennal club slightly shorter. Elytra: Vague, double rows of punctures on disc becoming obsolete in apical fourth. Pygidium: Convex in lateral view but not prctuberant at middle. Punctures larger. Lateral emarg in?-tion absent. Legs: Front tarsus with segment 5 not greatly enlarged, about 2. 5 times as long as segment 4. lnner claw not enlarged or split at apex. VARIATION -Single mal e p3ratype is 13. O mm long c,nd 7. 1 mm at greatest width. Variation is slight: scutellum lacks confluent punctures, margins of elytra lack slight indentation at humerus (but retain post-humeral indentation), and pygidium a little more densely punctate and without lateral emarginations.
DIScu::sioN -The following characters in combination are diagnostic for this species: the rugo-punctate c!ypeus, darkened sutura! edge, venter not entirely black, reddish-brown pronotum and elytra which lack markings, pronotai margirr not sharply edged, and the form of tha mal e genital ia. Ali three specimens were t;~ken at black light.

HOLOTYPE -
Male. Length 14.2 mm; greatest width 6. 5 mm. Color (Fig. 3) black except for anterior angles and lateral margin of pronotum, and discai and lateral areas of elytra which are testaceous.
Ali margins beaded; anterior marginal bead slightly produced at middle. Surface very minutely scabrous. punctate, and with a feeb le, longitudinal, median impression Disc with punctures moderate in density, small and moderately Jarge mixed, shallow, larger punctures setigerous; setae sparse, very short, fulvous. Base and 3pex similar to disc. Sides more densel~ punctate, apical angles becoming very densely punctate; punctures in apical angle large, shallow, confluent, setigerous; setae moderately dense, very short, fulvous . Apical angle and slender band along lateral margin testaceous; also a small, round, faint, testaceous spot near anterior margin behind eye. Scutellum tri angular, similar to disc of pronotum in sculpturing. Elytra: Widest at b:~se. Surface densely and very minutely scabrous, nearly subgranular. Disc setigerously punctate; punctures moderately dense, very shallow, ocellate , random except for 1 row at suture, 3 adjacent and poorly defined rows on center of disc, and 2 adj'l!lcent and impressed rows on lateral edge of disc; latter 2 rows s!ightly better defined than those on middle of disc and strong ly Four new species arcuate near base; rows becoming obsolete in apicai 1/ 4 of elytra; setae very short, sparse, fulvous. Sides similar to di se; 4 adjacent, slightly impressed rows of punctures behind humerus. Pygidium: Convex in lateral view. Disc dens&ly and finely scabrous, setigerously punctate; punctures moderately dense, moderate in depth and size; setae very long, slender, moderately dense, fulvous. Apical margins beaded, lateral emargination absent. Genitalia: Figs. 4-5 . Parameres with moderately long, dense, fulvous setae on basal half. Legs: Foretibiae bidentate in apical fourth. Foretarsus (Fig. 6) with tarsomeres 1-4 subequal in length; segment 3 expanded beneath into a small, longitudinal, plate-like area; segment 4 greatly expanded beneath into a large, longitudinal, plate-like area; segment 5 enlarged , about 3 times as long as preceding segment, without a ventral, plate-like area; inner claw greatly enlarged, large tooth at base, apex entire.

ALLOTYPE -
Female. Length 14 . 4 mm ; greatest width 7. O mm. As holotype except in the foliowing respects: Color of clypeus and pronotum black with faint piceous clouding; elytral margin just behind middle with an elongate, black patch; lateral emargination of pygidium with faint, testaceous cloud ing. Head: Surface aciculate. Front with punctures slightly less sparse medially; punctures apparently nonsetigerous (setae may be worn off) . Clypeus punctRte to rugo-punctate; punctures dense. moderately large, shallow, often elongate, nonsetigerous, becoming obsolete near apical third. Pronotum: Longitudinal median impress ion absent. Punctures apparently nonsetigerous . Apical angles not more densely punctate . Testaceous coloration lacking in apical :~ngle, on lateral margin, and near anterior margin behind eye. Elytra: Widest just behind middle. Punctures apparently non-setigerous, although a few small setae near suture and apex. Di se with median row of punctures botter defined; random punctures lacking between rows. Sides with lateral 2 rows of punctures poorly defined. Pygidium: Not as convex as in holotype. Punctures non-setigerous, small and moderate mixed. Lateral emargination very shallow . Legs: Foretibiae tridentate in apical half, although apical tooth on right foretibia broken off. Foretarsus with scgment 1 about twice as long as segment 2; segments 2-4 subequal; segments 3-4 not expanded beneath; segment 5 not greatly enlarged, about 2. 5 times longer than preceding segment; inner claw not enlarged.

VARIATION -
Males (1 paratype): Length 14.8 mm; greatest width 6.6 mm. Variation is slight: clypeus with marginal bead effaced apically and with only a few setigerous punctures (setae probably worn off) ; pronotum without testaceous spot near anterior margin behind eye.
Pygidium with punctures very small in both.
DIScussioN -Mimeoma eng/emani is the fourth species to be assigned to the genus Mimeoma which heretofore had not been recorded from Panamá (Endrodi, 1966). M . en-glem3ni is e a si ly separated from M . acuta (Arrow) by the shape of the clypeus and lack of elytral markings in M. acuta; and from M. signatoides (Hõhne) and M. maculata (Burmeister) by the sh3pe of the male genitalia, characteristic markings in M. englemani, and by the presence of an acute tooth on the 5th foretarsal segment in M. signatoides which is absent in M. englemani. The ma le genita lia of M . engl emani and M. acuta are s:milar, but the other characters listed will serve to separate these two species.

ETYMOLOGY -
This ~pecies is named in honor of a very good friend and colleague. Dodge Engleman, M. D., who has graciously provided me with inva luable assistance and shared in superb collecting during my vi sits to Panamá in 1975 and 1976.
rabbanii are similar to those of S. rufípennis (Fabr.) but differ in the following respects: in caudal view the lateral bulge of the paramere is above the middle in S. rabbanii and just below Four new species ... the middle in S. rufipennis. In lateral view the paramere is proportionately much more elong:He and the apex more slender in S. rabbanii; S. rabbanii also possesses a prominent, subapical tooth protruding from the concave margin of the paramere whereas S. rufipennis àoes not.
These specimens were taken at about 100 m from shore at fluorescent white light located on the roof of a boat moored in Lake Januacá . A return trip to the type locality 11 days later failed to yield further specimens. verse eye diameters as seen from above. Frontoclypeal suture a shallow, weakly impressed furrow. Clypeus trapezoidal, narrowing apically; a sharp, transverse carina just before apex, carina extending weakly around to sides; surface transversely rugose. Antennae 10segmented, club about as long as segments 2-7. Pronotum: Length-width ratio 3:5. Anterior margin slightly produced at middle, beaded; antet·ior angles saltent, acute, forward of anterior margin; sides rounded, beaded; posterior angles obtusely rounded; base without a marginal beaá. Surface very finely rugose . Disc sparsely punctate; punctures small to moderate, shallow, non-setigerous. Sides a little more densely punctate (especially in posterior third); punctures small medially and small to large in apical and basal thirds, sh3llnw, non-setigerous; moderate and large punctures ocellate-umbilicate. Scutellum triangular with a few, shallow, minute punctures. Elytra: Widest at middle. Surface very finety rugose. Discai area with 8 rows of punctures; punctures moderate to large, shallow, non-setigt1rous, ocellate (rim of puncture U-shaped, open posteriorly) . Row 1 (adjacent to suture) regularly punctate; row 2 irregular (punctures not in a single fine); rows 3-4 regular; row 5 absent in basal half and at apex, otherwise regular; rows 6-7 regu!ar; row 8 irregular, effaced at base by humerus. Sides similar to disc except punctures becoming much smaller laterally; 2 regular rows of punctures behind humerus (a short row of 8 punctures on humerus between these rows), followed Jateratly by an area of irregular punctures, 2 additionai (but weak) rows of regular punctures, and a small area of irregular, Vf.ry feeble punctures next to lateral margin. Pygidium: Convex in lateral view. Surface extremely finely rugose, moderately densely punctate; punctures large, shallow, non-setigerous, umbilicate, weakly ocellate. Marginal bead present. Genitalia: Figs. 9-1 O. Legs: Foretibiae tridentate in apical half. Foretarsi with segments 1 and 5 subequat ; segments 2-4 subequal, about hal f the length of segments 1 or 5. Mesa-and metatarsi with segments 1-4 slightly shorter than one preceding it.

VARIATION -
The single male paratype does not differ significantly from the holotype. lhe genitalia were, however, considerably dam:.ged during preparation.
nrscussroN-The mate genitafia wilf serve to separate this species from ali others in the 434-genus. The parameres most cfosefy resembfe those of S. rugulosus Endrõdi, but differ in that the lateral bulge (as seen in caud:.l view) is near the middle of the paramere in S. haacki and well above the middle in S. rugulosus; in addition, the apex of the paramere of S. haacki has 3 lateral tooth-like projections whereas t here are only 2 in S. rugu/osus. Finally , the apex of the paramere of S. haacki (as seen in lateral view) is much broader than that of S.

rugu/osus.
Like the preceding species, these specimens were taken at about 100 m from shore at fluorescent wh ite light focated on the roof of a boat moored in lake Januacá . A return trip to the type locality 11 days !ater failed to yield further specimens.

ETYMOLOGY -This species is named after
Ma rtha J. Haack, Scientific lllustrator at the University of Nebraska State Museum, lincofn, Nebraska, U . S . A., in recognition of her superb renditions of entomologicaf subjects .