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

Nesocyrtosoma cristalense (Zayas)

( Figs. 59 , 177–180 , 262 , 290 )

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

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 ), anterior angles of the pronotum obtuse and broadly rounded ( Fig. 179 ), the humeral angle effaced ( Fig. 177 ), prosternal process curved to apex ( Fig. 180 ), 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 ). 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 ); ventral portion of eye reaching subgenal sulcus ( Fig. 9 ); 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 ). Hypomeron with distinct punctures ( Fig. 27 ). Prosternal process apically rounded, distinct longitudinal marginal grooves opposite coxae joined apically ( Fig. 180 ). 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 ). Humeral angle effaced ( Fig. 177 ). Mesoventrite thin antero-posteriorly, deeply excavate, V-shaped receiving prosternal process; metaventrite subequal to antero-postero length of mesocoxa ( Fig. 180 ). 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 ). Abdominal depressions on 4th and 5th ventrites present as weakly impressed pits ( Fig. 75 ); intercoxal process of first ventrite broadly triangular apically; ventral surface densely punctate, punctures weakly impressed ( Fig. 180 ).

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 , 262 ).

Figures

Figs. 50–61. Male metatibia of the Purple species-group species. 50) Nesocyrtosoma basilense; 51) N. dolosum; 52) N. purpureum; 53) N. crenulatum; 54) N. otus; 55) N. darlingtoni; 56) N. mutabile; 57) N. larseni; 58) N. parallelum; 59) N. cristalense; 60) N. cuprosum; 61) N. elongatum.

Figs. 177–184. 177–180: Nesocyrtosoma cristalense. 177) Habitus, dorsal; 178) Habitus, lateral; 179) Pronotum; 180) Thoracic sterna. 181–184: Nesocyrtosoma cuprosum. 181) Habitus, dorsal; 182) Habitus, lateral; 183) Pronotum; 184) Thoracic sterna.

Figs. 262–264. Nesocyrtosoma species distribution maps. 262) Distributions of N. bestiola, N. ferruginea, N. merkli, N. altagracia, N. basilense, N. dolosum, N. darlingtoni, N. cristalense, and N. dentatum; 263) Distributions of N. virens, N. purpureum, N. crenulatum, N. otus, and N. elongatum; 264) Distributions of N. tumefactum, N. turquinense, N. scabrosum, N. simplex, N. parallelum, N. fernandoi, N. serratum, N. teresitae, and N. productum.

Figs. 281–292. Illustrations of male genitalia in dorsal and lateral view of the Purple species-group species. 281) Nesocyrtosoma basilense; 282) N. dolosum; 283) N. purpureum; 284) N. crenulatum; 285) N. otus; 286) N. darlingtoni; 287) N. mutabile; 288) N. larseni; 289) N. parallelum; 290) N. cristalense; 291) N. cuprosum; 292) N. elongatum.

Figs. 85–94. 85–89: Nesocyrtosoma bestiola. 85) Habitus, dorsal; 86) Habitus, lateral; 87) Pronotum; 88) Thoracic sterna; 89) Prosternal process forming shelf at base. 90–94: Nesocyrtosoma ferruginea. 90) Habitus, dorsal; 91) Habitus, lateral; 92) Pronotum; 93) Thoracic sterna; 94) Male metatibia.

Figs. 10–18. 10–13: Ventral portion of head. 10) Nesocyrtosoma guerreroi ocular depression; 11) Nesocyrtosoma bankense ocular depression; 12) Nesocyrtosoma virens distinct postgenal punctures; 13) Nesocyrtosoma otus median keel of mentum broad. 14–18: Antenna. 14) Nesocyrtosoma crenulatum with antennomeres 10 and 11 with stellate sensoria; 15) Nesocyrtosoma guerreroi with antenna clavate, apical six antennomeres enlarged to form club; 16) Nesocyrtosoma crenulatum with antenna moderately clavate, apical six antennomeres enlarged to form club; 17) Nesocyrtosoma inflatum with antenna weakly clavate, nearly filiform, apical six antennomeres enlarged to form club; 18) Strongylium atrum with filiform antenna.

Figs. 5–9. 5–7: Mandible of Nesocyrtosoma hispaniolae. 5) View from back; 6) View from side; 7) View from front. 8–9: Ventral portion of eye. 8) Nesocyrtosoma lacrima with ventral portion of eye not reaching the subgenal sulcus; 9) Nesocyrtosoma darlingtoni with ventral portion of eye reaching the subgenal sulcus.

Figs. 23–28. Characters of the pronotum, hypomeron and prosternal process. 23) Nesocyrtosoma bestiola pronotum with anterior marginal bead effaced, lateral marginal bead complete, and posterior margin absent; 24) Nesocyrtosoma inflatum pronotum with anterior and posterior marginal beads effaced medially and lateral marginal bead complete; 25) Nesocyrtosoma lacrima pronotum with anterior marginal bead absent, lateral marginal bead complete, and posterior marginal bead absent; 26) Strongylium atrum pronotum with anterior and posterior marginal bead complete and lateral marginal bead absent; 27) Nesocyrtosoma cubanense hypomeron with marginal bead and distinct punctures; 28) Cnodalon viride prosternal process apically narrowly rounded, nearly to a point.

Figs. 74–76. Abdominal characters. 74) Nesocyrtosoma inflatum with abdominal depressions on 4th and 5th ventrites reduced to indistinct slits (AbS 5 abdominal slits); 75) Nesocyrtosoma otus with abdominal depressions on 4th and 5th ventrites present as impressed pits (AbP 5 abdominal pits); 76) Nesocyrtosoma skelleyi with first visible abdominal ventrite with a nipple at the apex.

Figs. 258–259. Maps of provinces of Cuba. 258) Provinces of Cuba from 1976 to present; 259) Provinces of Cuba prior to 1976.