Nesocyrtosoma

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: 20-22

publication ID

http://doi.org/ 10.1649/0010-065x-63.sp8.1

persistent identifier

http://treatment.plazi.org/id/457F4C06-A81D-FFE5-E089-FB3BD1C5B760

treatment provided by

Carolina

scientific name

Nesocyrtosoma
status

s. s.

Nesocyrtosoma   s. s. Species-group

Seven species are redescribed and five new species are described for the first time. Species are listed in phylogenetic order.

Nesocyrtosoma bestiola Hopp and Ivie   , New Species ( Figs. 23 View Figs , 39 View Figs , 85–89 View Figs , 262 View Figs , 270 View Figs )

Type Material. HOLOTYPE: Male. DOMIN. REP.: Prov. Barahona; 7km NE Enriquillo ; 08 SEP 1988, beating veg.; M. A. Ivie, T. K. Philips; and K. A. Johnson colrs. (from WIBF, deposited in NMNH)   . PARATYPES (3 specimens): 2 specimens from WIBF with the same label data as holotype (1 WIBF, 1 NMNH) and 1 labeled DOMIN. REP.: Prov. Barahona; 32 km S Barahona, nr  

coast; 29 AUG 1988, on dead logs; M. A. Ivie, T. K. Philips; and K. A. Johnson colrs. (1 WIBF).

Diagnosis. This species can be distinguished by the small, convex body form, black lustrous color, and extremely lightly impressed elytral punctation. This species is similar to Nesocyrtosoma hispaniolae   , but can be distinguished by the base of the prosternal process forming a shelf ( Fig. 89 View Figs ). Males of this species have a longitudinal patch of setae extending 1/4 of the metatibia from the base on the venter ( Fig. 39 View Figs ).

Description (male). 4.0–5.0 mm long, 3.0– 3.5 mm wide. Body short, extremely convex ( Figs. 85, 86 View Figs ). Black with weak luster under light; antennae, mouthparts, legs and tarsi darkly ferrugineous. Head densely punctate; punctures smaller than a single eye facet and lightly impressed; extremely short golden seta emerging from each puncture; head often appearing smooth. Antenna clavate; antennomeres 7–10 transverse, forming a loose, elongate club; antennomere 11 subcircular; 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 lightly punctate, punctures lightly impressed, pronotum often appearing smooth, shagreened. Pronotal marginal bead complete laterally, anterior marginal bead effaced medially, posterior marginal bead absent; anterior angles of pronotum acute, produced and apically narrowly rounded; lateral edge of pronotum evenly curved to base; pronotum evenly convex ( Figs. 23 View Figs , 87 View Figs ). Hypomeron lacking distinct punctures. Prosternal process basally forming a shelf ( Fig. 89 View Figs ), apically rounded, indistinct marginal grooves opposite coxae, joined apically ( Fig. 88 View Figs ). Elytral striae with small, lightly impressed puncture rows, punctures the size of the point of an insect pin, separated by 2 diameters; scutellary striae absent; scutellum triangular, reduced ( Figs. 85, 87 View Figs ). Mesoventrite thin antero-posteriorly, excavate, V-shaped, receiving prosternal process; metaventrite,1/2 anteropostero length of mesocoxa ( Fig. 88 View Figs ). Metathoracic wing vestigial. Legs short, punctate; apical portion of femora reaching beyond edge of elytron; tibiae straight; metatibia with longitudinal patch of setae extending 1/4 of the metatibia from the base on the venter ( Fig. 39 View Figs ). Abdominal depressions on 4th and 5th ventrites reduced to indistinct slits ( Fig. 74 View Figs ); intercoxal process of first ventrite broadly rounded apically; ventral surface densely punctate, punctures moderately impressed ( Fig. 88 View Figs ).

Female. Identical to male, except metatibia without ventral longitudinal patch of setae.

Biology. The specimens of this species were beaten from dead limbs or taken on dead logs.

Distribution. This species is endemic to Hispaniola and has been taken in the eastern Sierra de Bahoruco near Enriquillo and Barahona in Barahona Province ( Figs. 260 View Fig , 262 View Figs ).

Etymology. The species epithet, used as a noun in apposition, is from the Latin word bestiola   meaning a little creature, referring to its status as smallest member of the Nesocyrtosoma   s. s. species-group.

Nesocyrtosoma ferruginea (Garrido and Gutiérrez)   , New Combination ( Figs. 40 View Figs , 90–94 View Figs , 262 View Figs , 271 View Figs )

Cyrtosoma (Nesocyrtosoma) ferruginea Garrido and Gutiérrez 1996: 283–284   , Fig. 1 View Figs ; Peck 2005: 156.

Type Material Examined. HOLOTYPE: III.84; Maisi, Ote.; Col. Genaro. ( MNHC).  

Other Material Examined. Coast below; Pico Turquino; June 26–30, ’36/ Cuba 1936; Darlington; Collector. (2 MCZC). CUBA, Reserva; Ecologica; Hatibonico, Guantanamo; vi.2001, cols. JA; Genaro y; LM Diaz. (2 OHGC — bearing the numbers OHG 2833 and OHG 1282). Maisi, Ote; III. 84; Col. Genero/ Tenebrionidae   ; Ident. OHG 2846; Cyrtosoma ferruginea   ; Garr. and Gut. 1997. (1 OHGC). Loma Gato; Ote. J. Aluna; Sept. 1935 / Loma del Gato; Sept- 1935; J. Aluna/ Tenebrionidae   ; Ident. OHG 1472; Cyrtosoma   . (1 OHGC).

Diagnosis. This species can be distinguished by the short, convex body form, and small weakly impressed elytral punctures spaced 2 diameters apart. This species is similar to Nesocyrtosoma inflatum   , but can be separated by the weakly impressed elytral punctures and elytra apices weakly tapered and barely visible from above ( Fig. 90 View Figs ). It is also similar to N. bestiola   and N. hispaniolae   , but can be separated by having more obvious elytral punctures and more globose body.

Redescription (modified from Garrido and Gutiérrez 1996) (male). 6.0–7.0 mm long, 5.0 mm wide. Body short, extremely convex ( Figs. 90, 91 View Figs ). Apex of elytra barely visible from above ( Fig. 90 View Figs ). Black in color; antennae, mouthparts and tarsi ferrugineous. Head densely punctate, punctures smaller than a single eye facet, lightly 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 broad median keel raised anteriorly to a point ( Fig. 13 View Figs ); ventral portion of eye not reaching subgenal sulcus ( Fig. 8 View Figs ); postgena without distinct puncture. Dorsal surface of pronotum densely punctate; punctures separated by 1.0–1.5 diameters. Pronotal marginal bead complete laterally; anterior and posterior margins with marginal bead effaced medially; anterior angles of pronotum acute, produced and apically narrowly rounded; lateral edge of pronotum weakly sinuate at base; pronotum evenly convex ( Fig. 92 View Figs ). Hypomeron lacking distinct punctures. Prosternal process apically rounded with marginal grooves opposite coxae not joined apically ( Fig. 93 View Figs ). Elytral striae not impressed, present as rows of small punctures separated by 1.0– 1.5 3 diameter; elytral interstriae flat, impunctate; scutellary striae short indistinct, 1–3 punctures long; scutellum triangular, reduced ( Figs. 90, 92 View Figs ). Mesoventrite thin antero-posteriorly, deeply excavate, V-shaped, receiving prosternal process; metaventrite,1/2 antero-postero length of mesocoxa ( Fig. 93 View Figs ). Metathoracic wing vestigial. Legs short, slender, punctate; apical 1/4 of femur reaching beyond edge of elytron; tibiae straight; metatibia with ventral longitudinal patch of setae extending from apex to approximately 1/3 its length ( Figs. 40 View Figs , 94 View Figs ). Abdominal depressions on 4th and 5th ventrites reduced to slightly impressed slits ( Fig. 74 View Figs ); intercoxal process of first ventrite broadly triangular apically; ventral surface densely punctate, punctures weakly impressed ( Fig. 93 View Figs ).

Female. Identical to male, except metatibia lacking ventral longitudinal patch of setae.

Biology. No biological data available, except that this species is known from the coast near Pico Turquino.

Distribution. This species is endemic to Cuba and has only been collected on Pico Turquino in Guantánamo province ( Figs. 258 View Figs , 262 View Figs ).

T

Tavera, Department of Geology and Geophysics

WIBF

West Indian Beetle Fauna Project Collection

NMNH

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Tenebrionidae

Loc

Nesocyrtosoma

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

Cyrtosoma (Nesocyrtosoma) ferruginea Garrido and Gutiérrez 1996: 283–284

Peck, S. B. 2005: 156
Garrido, O. H. & E. Gutierrez 1996: 284
1996