Nesocyrtosoma cristalense (Zayas)

Hopp, Katie J. & Ivie, Michael A., 2009, A Revision Of The West Indian Genus Nesocyrtosoma Marcuzzi (Coleoptera: Tenebrionidae), The Coleopterists Bulletin (mo 8) 63, pp. 1-138: 53-54

publication ID 10.1649/0010-065x-63.sp8.1

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scientific name

Nesocyrtosoma cristalense (Zayas)


Nesocyrtosoma cristalense (Zayas)  

( Figs. 59 View Figs , 177–180 View Figs , 262 View Figs , 290 View Figs )

Cnodalon cristalensis Zayas 1988: 99–100   , Fig. 88 View Figs .

Nesocyrtosoma cristalensis   ; Doyen and Poinar 1994: 48.

Cyrtosoma (Nesocyrtosoma) cristalensis   ; Garrido and Gutiérrez 1996: 281.

Cyrtosoma (Nesocyrtosoma) critalensis   ; Garrido and Gutiérrez 1996: 282 [lapsus calami].

Cyrtosoma cristalensis   ; Marcuzzi 1998: 160; Peck 2005: 156.

Type Material Examined. HOLOTYPE: Col. F. de Zayas; Sierra Cristal; 6- 1959; Oriente. CUBA / red circle label Tipo/ C. cristalen-;sis.; Zayas. ( FZCM).  

Other Material Examined. S. del Cristal; Ote. 5/36 Zayas. (1 FSMC). Col. F. de Zayas; Gran Piedra; Jun 1962; Oriente. CUBA. (1 FZMC). Piloto, Moa,; Ote. VI- 7-51. (1 FZMC). S. del Cristal; Ote. 5/55 Zayas. (1 NMNH). Sierra del; Cristal - Ote; 5/1955; Zayas/ Tenebrionidae   ; Ident. OHG 556; Cyrtosoma cristalensis   ; Zayas, 1988. (1 OHGC).

Diagnosis. This species is most similar to N. elongatum   , but can be distinguished from that species and all others by the elongate, less convex body form ( Figs. 177, 178 View Figs ), anterior angles of the pronotum obtuse and broadly rounded ( Fig. 179 View Figs ), the humeral angle effaced ( Fig. 177 View Figs ), prosternal process curved to apex ( Fig. 180 View Figs ), and purple coloration.

Redescription (modified from Zayas 1988) (male). 7.5–9.0 mm long, 5.0 mm wide. Body elongate, slightly convex ( Figs. 177, 178 View Figs ). With purple tinge; antennae, mouthparts, and tarsi tending to be the same color as legs. Head moderately punctate, largest punctures subequal in size to a single eye facet, moderately impressed, extremely short golden seta emerging from each puncture. Antenna weakly clavate, nearly filiform; antennomeres 7–10 weakly widened apically, forming a loose, elongate club; apical antennomere longitudinally ovate; antennomeres 7–11 with stellate sensoria. Mentum with acute median keel raised anteriorly to a point ( Figs. 10, 12 View Figs ); ventral portion of eye reaching subgenal sulcus ( Fig. 9 View Figs ); postgena without distinct punctures. Dorsal surface of pronotum moderately punctate; punctures separated by 1.0–2.0 diameters. Pronotal marginal bead complete laterally, anterior and posterior margins with marginal bead effaced medially; anterior angles of pronotum obtuse, moderately produced and widely rounded apically; lateral edge of pronotum strongly sinuate at base; pronotum evenly convex ( Fig. 179 View Figs ). Hypomeron with distinct punctures ( Fig. 27 View Figs ). Prosternal process apically rounded, distinct longitudinal marginal grooves opposite coxae joined apically ( Fig. 180 View Figs ). Elytral striae not impressed, present as small discontinuous punctures; elytral interstriae densely punctate; scutellary striae 4–10 punctures long; scutellum triangular, normal ( Figs. 177, 179 View Figs ). Humeral angle effaced ( Fig. 177 View Figs ). Mesoventrite thin antero-posteriorly, deeply excavate, V-shaped receiving prosternal process; metaventrite subequal to antero-postero length of mesocoxa ( Fig. 180 View Figs ). Metathoracic wing fully developed. Legs long, slender, densely and lightly punctate; apical 1/3 of femur reaching beyond edge of elytron; metatibia with apical ventral tooth vestigial ( Fig. 59 View Figs ). Abdominal depressions on 4th and 5th ventrites present as weakly impressed pits ( Fig. 75 View Figs ); intercoxal process of first ventrite broadly triangular apically; ventral surface densely punctate, punctures weakly impressed ( Fig. 180 View Figs ).

Female. Identical to male, except metatibia without ventral apical tooth.

Biology. Unknown.

Distribution. This species is endemic to Cuba and has only been taken in the Sierra de Cristal in Guantánamo Province ( Figs. 258 View Figs , 262 View Figs ).


Florida State Museum


Smithsonian Institution, National Museum of Natural History














Nesocyrtosoma cristalense (Zayas)

Hopp, Katie J. & Ivie, Michael A. 2009

Cyrtosoma cristalensis

Peck, S. B. 2005: 156
Marcuzzi, G. 1998: 160

Cyrtosoma (Nesocyrtosoma) cristalensis

Garrido, O. H. & E. Gutierrez 1996: 281

Cyrtosoma (Nesocyrtosoma) critalensis

Garrido, O. H. & E. Gutierrez 1996: 282

Nesocyrtosoma cristalensis

Doyen, J. T. & Poinar, Jr. 1994: 48

Cnodalon cristalensis

Zayas, F. 1988: 100