Eideria glabripenis Neita & Ocampo

Neita, Jhon Cesar & Ocampo, Federico C., 2012, A new genus and three new species of Neotropical Tanyproctini (Coleoptera: Scarabaeidae: Melolonthinae), Zootaxa 3281, pp. 41-55 : 50-51

Eideria glabripenis Neita & Ocampo , new species

( Figs. 23–24 , 29 )

Type material. Holotype male at CMNC labeled: “ ECU:Pich; 47KmS / Sto. Domingo, RioPalenque / 5.V- 25.VII.85, S&J Peck / 250 m, malaise-FIT / rainforest” ”, “ Eideria / glabripenis / Neita and Ocampo / HOLOTYPE ” (red label). Two male paratypes at CMNC labeled: “ Ecuador, 700 / Río Palenque / 47 km. S. St. / Domingo / Feb. 22 1976 / H. & A. Howden.” Fifty-two paratypes (41 at CMNC, nine at IAZA, two at MLPA) labeled: “ ECU:Pich; 47KmS / Sto. Domingo, RioPalenque / 5.V-25.VII.85, S&J Peck / 250 m, malaise-FIT / rainforest.” All paratypes labeled: “ Eideria / glabripenis / Neita and Ocampo / PARATYPE ” (yellow label).

Type locality. Ecuador, Pichincha, 47 km south of Santo Domingo, Río Palenque.

Description of holotype. Length 8.46 mm; width: 4.18 mm. Head, pronotum, elytra, venter, and legs dark brown. Head ( Fig. 23 ): Surface convex, densely punctate, ocellate, punctures setose, large (0.06–0.08 mm), interocular width 0.7 mm. Eye canthus truncate, setose; setae moderately dense, slender, long. Frontoclypeal suture evident, complete. Clypeus broadly rounded; surface concave, densely punctate; punctures moderate in size (0.04–0.06 mm) ( Fig. 23 ). Clypeal margin reflexed, shape broadly. Clypeal ventral surface setose; setae slender, long. Mandibles poorly developed on the incisive and molar area. Labrum poorly developed, conical, setose; setae moderately long. Labium poorly developed, ligule prominent. Maxillae with galea poorly developed, lacinia not developed, maxillary palpus with 4 palpomeres, palpomere 4 as long as 1–3 combined. Antennae with 9 antennomeres; antennomere 1 robust; antennomere 2 globose; antennomeres 3 and 4 similar to length, with base cylindrical, apices broad; antennal club with 5 antennomeres, with few setae.

Pronotum ( Fig. 23 ): Convex, wider than long at middle. Surface densely punctate, punctures ocellate, setose, moderate in size (0.042–0.064 mm). Marginal bead present; anterior margin concave; lateral margins slightly angulate, setose, setae hair-like, long; posterior margin slightly defined at middle. Anterior angles rounded; posterior angles broadly rounded. Scutellum ( Fig. 23 ): Surface opaque, densely punctate, setose; punctures ocellate, moderate in size (0.040–0.053 mm), scutellar apex rounded. Elytra ( Fig. 23 ): Convex, elongate, subparallel. Surface opaque, densely punctate, setose; punctures moderate in size (0.040–0.082 mm); setae long, hair like. Elytra with 5 striate. Elytral margins setose; setae long, hair-like. Hind wings: Subcostal and radial vein well sclerotized, not reaching radial sector vein at wing apex; radial sector vein forked at apex; medial vein well developed; medial loop short; cubital vein slightly sclerotized apically from medial loop connection; anal veins 1, 2 not connected, not forming a basal cell. Ve n te r: prosternal process absent, on the side slightly concave, surface densely setose; setae slender short, tawny. Mesosternal surface sparsely setose, slightly concave in its middle. Metasternal surface densely punctate, punctures ocellate, setose; setae slender and long; metasternal apex divergent. Propygidium slightly convex at middle. Pygidium: recumbent, surface densely punctate, punctures ocellate; setose, setae moderately long, slender. Legs: coxae sparsely setose, setae long. Femoral surface sparsely setose, setae long. Protibia with 3 teeth; basal tooth small, surface with line of setae from base to apex. Mesotibiae and metatibiae with medial transverse carinae, carina with 6–8 spine-like setae; apices semicircular, transversely truncate. Tarsal claws bifurcated, symmetrical, short, and thick. Genitalia ( Figs. 24 a–b): parameres simple, symmetrical, elongate, slender, tapered toward apex, without setose sulcus from base to apex on outer margin; parameres shorter than phallobase.

Female. Unknown.

Variation. The paratypes do not differ significantly from holotype; length ranges from 7.64–8.13 mm, width 3.37–3.74 mm. Some paratypes have elytra that are lighter in color than holotype. The holotype appears to be teneral as it is lighter in color than many of the paratypes.

Distribution. The species is known only from the type locality, the locality corresponds to a tropical rain forest from the inter-Andean valleys of the Andes Mountain, in Río Palenque near Santo Domingo, Pichincha, Ecuador ( Fig. 29 ).

Locality records. (55 adults, male). Ecuador: Pichincha, Santo Domingo (47 km S).

Temporal distribution. February and May to July.

Diagnosis. Males of this species are easily distinguished from E. pentaphylla and E. pedroantonioi by the following combination of characters: elytra with 5 striae, striae widely separated; tarsal claws shorter and thicker than in E. pentaphylla and E. pedroantonioi ; pygidium more densely punctate. The unique form of the parameres and the lack of a setose sulcus from base to apex on outer margin are also diagnostic (the setose sulcus is present in E. pentaphylla and E. pedroantonioi ).

Etymology. From the latin “ glaber ”, meaning absence hairs and -“ penis ”, meaning parameres; used here as referring to the lack of setae on the parameres of this species.

Natural history. All that is known about the natural history of this species is that it has been collected in a rainforest on thewestern slope of the Ecuadorian Andes at 497 m.

Figures

FIGURE 29. Distribution of Eideria species.

FIGURE 23, 24. Eideria glabripenis. 23, habitus of holotype, dorsal view. Scale bar: 0.4 mm; 24, parameres, a) caudal view; b) lateral view.