Otoglossa nevermanni (Liebke)

Erwin, Terry L., 2004, The beetle family Carabidae of Costa Rica: The genera of the Cryptobatida group of subtribe Agrina, tribe Lebiini, with new species and notes on their way of life (Insecta: Coleoptera), Zootaxa 662, pp. 1-54 : 41-43

Otoglossa nevermanni (Liebke)

(Figs. 23, 24, 38)

Heraldinium nevermanni Liebke, 1927:102 . Lectotype female, in NMNH, Type #54408, COSTA RICA. LIMÓN, Rio Reventazon, Ebene, Hamburg Farm, 10 m, 10° 15' 0 N, 083° 28' 0 W, July (F. Nevermann)(NMNH: ADP008578). Synonymized by Erwin (1975).

Common name. Nevermann's narrow­necked carabid beetle.

Diagnosis. With the attributes of the genus described above and head, palpomeres, and prothorax piceous, elytra brown with purplish tinge marginally, other appendages testaceous.

Description. (Fig. 23). Size small: ABL = 5.6 to 6.0 mm, SBL = 4.5 to 4.7 mm, TW = 2.3 to 2.7 mm. Color: Head, pronotum, and anterior half of prosternum piceous, elytra and tergum 6 brown, elytra with slight violaceous reflections at sides; appendages testaceous, except slightly infuscated antennal flagellum; venter testaceous except head and anterior half of prosternum piceous, sternum 6 slightly infuscated. Luster: Dorsal surface very shiny. Microsculpture: Head and elytra with transverse closed meshes, more course on vertex of head, variously contorted in direction by the markedly contoured and tuberculate surfaces of elytron; pronotum disc without meshes. Head: Ovoid on stalked constricted neck, with large prominent eyes; clypeus and frons depressed; vertex with shallow median sulcus. Prothorax: Narrow, tubular, markedly flanged at base, with narrow lateral bead, and slightly dentate at lateral seta; basal seta present. Pterothorax: Normal for fully winged carabid. Legs: Normal for lebiines, except hind tibia narrowed and slightly arcuate distal to middle (this attribute also found in some members of the genus Agra ). Abdomen: Sterna normal for lebiines, except male with two pairs of setae at posterior margin of sternum 6, female with on pair. Male genitalia: Phallus ( Fig. 24 ) with ostium 1/4 its length, apex moderately elongate, rounded, lobed; phallus catopic; internal sac with long flagellum, barbed at apex. Parameres asymmetric, left larger that right, right very small.

Dispersal potential. These beetles are fully winged. None that I have studied have been collected at black light, but they likely disperse readily by flight since their rotten log habitat is a temporary one and very dispersed in lowland tropical forests.

Way of life. Nevermann collected these beetles on rotten logs. His notes do not suggest that they were in association with fungi, however that is likely. I have collected adults of other species with canopy fogging techniques in South America, so they also occur in the canopy. The known altitudinal range of this species is between 10 and 150 meters above sea level. Adults have been obtained east of the Cordillera Central in January, June, and August, hence they are active in both the dry and rainy seasons in the lowlands.

Other specimens examined. COSTA RICA. 1 male, HEREDIA, 3.0 km S Puerto Viejo, Finca La Selva , 50–150 m, 10° 25' 55” N, 084° 00' 32” W, LN535500,268000, January (INBio­OET)( INBio: CRI 002725221); 1 male, LIMÓN, 30.0 km N Cariari, Sector Cerro Cocori, Finca de E. Rojas, 150 m, 10° 35' 29” N, 083° 42' 29” W, LN28600,567500, August (E. Rojas)( INBIO: CRI 002021286, ADP 100392); Paralectotypes: 1 female, 2 males, Rio Reventazon, Ebene, Hamburg Farm, 10 m, 10° 15' 0 N, 083° 28' 0 W, July (F. Nevermann)( NMNH: ADP008578) August ( NMNH: ADP008575) November ( NMNH: ADP008577) June ( NMNH: ADP008576). PANAMÁ. 1 male, COLÓN, 6 km SE Colón, June (E. Giesbert)( CAS: ADP 100394).

Geographic distribution. ( Fig. 38 ). Known only from lower Central America in Costa Rica and Panamá.

Notes. The two specimens cited by Erwin (1975) as missing have been found, thus Liebke's entire series from the Nevermann collection is now located in the NMNH.

Figures

FIGURE 24. Phallus, dorsal, ventral, left lateral aspects of Otoglossa nevermanni (Liebke), specimen # ADP 100392.

FIGURE 38. Geographical distribution map of the species of Otoglossa in Costa Rica: O. nevermanni (Liebke) (open box,).