Nesocyrtosoma parallelum (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 : 52-53

Nesocyrtosoma parallelum (Zayas)

( Figs. 58 , 173–176 , 264 , 289 )

Cnodalon parallelus Zayas 1988: 96 , Fig. 85 .

Nesocyrtosoma parallelus ; Doyen 1994: 48.

Cyrtosoma (Nesocyrtosoma) parallelus ; Garrido and Gutiérrez 1996: 281–283. Cyrtosoma parallelus ; Marcuzzi 1998: 160; Peck 2005: 156.

Cnodalon ruficorne Gundlach [nomen nudum, in Gundlach collection].

Type Material Examined. LECTOTYPE here designated: Col. F. de Zayas; Cuchillas de Toa; Cupeyal 6 1964; Oriente. CUBA / red circle label says Tipo/ C. paralle ;lus. sp. n/ LECTOTYPE; Cnodalon ; parallelus Zayas ; det. K. J. Hopp 2008. ( FZCM). PARALECTOTYPES here designated: 5 specimens in FZCM labeled: Col. F. de Zayas; Chuchillas de Toa; Cupeyal 6 1964; Oriente. CUBA / PARALECTOTYPE; Cnodalon ; parallelus Zayas ; det. K. J. Hopp 2008.

Zayas Collection Notes. Zayas (1988) described this species from six examples from Cupeyal in his collection. However, in January 2008, there were nine specimens in the collection, all from Cupeyal. The specimen marked with a red Tipo label is here designated as the lectotype and the first five of the remaining eight specimens are here designated as paralectotypes.

Other Material Examined. Sierra del Rangel ; VI- 1930; Pinar del Rio. CUBA / CYRTOSOMA ; sp.; det. O.H.G. (1 IESC) . Cayamas ; 24. 2 Cuba / E. A. Schwarz; Collector. (1 WIBF) . Cayamas ; 16. 3 Cuba / E. A. Schwarz; Collector. (1 NMNH, 1 WIBF) . Cayamas ; 15. 3 Cuba / E. A. Schwarz; Collector. (1 WIBF) . Cayamas ; 13. 2 Cuba / E. A. Schwarz; Collector. (1 NMNH) . Cayamas ; 10. 6 Cuba / E. A. Schwarz; Collector. (1 NMNH) . Cayamas ; 23. 5 Cuba / E. A. Schwarz; Collector. (1 NMNH) . Sierra del Rangel ; VI- 1930; Pinar del Rio. CUBA. (1 IESC) . Pico CUBA; Turquino; VI-1964; Zayas-Garcia. (1 OHGC) . Gundlach 1658 (1 IESC) .

Diagnosis. This species can be distinguished by the sharp anterior angles of the pronotum ( Fig. 175 ), long scutellary striae nearly meeting the median suture of the elytra ( Fig. 175 ), and the prosternal process rounded to a point, with distinct marginal grooves opposite coxae joined apically and the area between the marginal grooves concave, becoming convex at apex ( Fig. 176 ).

Redescription (modified from Zayas 1988) (male). 6.5–7.0 mm long, 4.0– 4.5 mm wide. Body elongate, slightly convex ( Figs. 173, 174 ). Purple to black; antennae, mouthparts and tarsi tending to be the same color as the legs. Head densely punctate, largest punctures subequal in size to single eye facet and 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 with circular punctures ( Fig. 12 ). Dorsal surface of pronotum densely punctate; punctures separated by 0.5–1.5 diameters. Pronotal marginal bead complete laterally, anterior and posterior margins with marginal bead effaced medially; anterior angles of pronotum acute, moderately produced and apically narrowly rounded; lateral edge of pronotum sinuate at base; pronotum evenly convex ( Fig. 175 ). Hypomeron with distinct punctures ( Fig. 27 ). Prosternal process apically rounded to a point; distinct marginal grooves opposite coxae joined apically, area between marginal grooves concave between coxae, becoming convex at apex ( Fig. 176 ). Elytral striae not impressed, present as small discontinuous punctures; punctures separated by 0.5–1.0 diameters; appearing as a fine stria; elytral interstriae flat; densely punctate; scutellary striae 4– 10 punctures long, nearly reaching the elytral suture; scutellum triangular, normal ( Figs. 173, 175 ). Mesoventrite thin antero-posteriorly, deeply excavate, U-shaped, receiving prosternal process; metaventrite subequal in antero-postero length of mesocoxa ( Fig. 176 ). Metathoracic wing fully developed. Legs short, punctate, apical 1/4 of femur reaching beyond elytron; tibiae slightly apically curved ventrally; metatibia with apical ventral tooth vestigial ( Fig. 58 ). Abdominal depressions on 4th and 5th ventrites present reduced to slightly impressed slits ( Fig. 74 ); intercoxal process of first ventrite broadly triangular apically; ventral surface densely punctate; punctures moderately impressed ( Fig. 176 ).

Female. Identical to male, except tibiae straight and metatibia lacking ventral apical tooth.

Biology. Unknown.

Distribution. This species is endemic to Cuba and has only been collected at Cayamas in Villa Clara Province ( Figs. 258 , 264 ).

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. 169–176. 169–172: Nesocyrtosoma larseni. 169) Habitus, dorsal; 170) Habitus, lateral; 171) Pronotum; 172) Thoracic sterna. 173–176: Nesocyrtosoma parallelum. 173) Habitus, dorsal; 174) Habitus, lateral; 175) Pronotum; 176) 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.