Nesocyrtosoma serratum Hopp and Ivie

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: 62-63

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

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scientific name

Nesocyrtosoma serratum Hopp and Ivie

New Species

Nesocyrtosoma serratum Hopp and Ivie   , New Species

( Figs. 38 View Figs , 65 View Figs , 209–212 View Figs , 264 View Figs , 296 View Figs )

Type Material. HOLOTYPE: Male. DOMINICAN REPUBLIC; Pedernales prov., 172 m,;, 10 km on trail to Carlitos,; Parque Nacional Jaragua ,; 17u 47.8929N 71u 28,9659W; 708. iv.2004, D. Perez, B.; Hierro, R. Bastardo. [RD- 216]. ( NMNH) GoogleMaps   . PARATYPES (5 specimens): 1 WIBF specimen with same data as holotype. ( WIBF). DOM. REP.: Prov. LaAltagracia; Boca de Yuma entr., Par. Nac; del Este, 06AUG1999, 12 m; 18u 21.9049N, 68u 37.0949W; M. A. Ivie, beating vegetation. (1 WIBF). DOMINICAN REPUBLIC:; Pedernales Prov., PN Jaragua; 3 km S. of Los Tres Charcos; 99 m; 17u 48.0639N, 71u 26.8099W; 16- VI-2005, Gino Nearns. (1 FSCA). DOMINICAN REPUBLIC; La Altagracia Prov., PN del; Este, Boca de Yuma ; 18u 21.5089N, 68u 36.9569W; 20m-day coll. 19 July 2004; Steven W. Lingafelter. (1 WIBF). DOMINICAN REPUBLIC; La Altagracia Prov., PN del; Este , Guargauao- day coll.; 18u 19.5689N, 68u 48.5009W; 0–5 meters 21 July 2004; Norman Woodley. (1 NMNH) GoogleMaps   .

Other Material Examined. DOM. REP.: Prov. Pedernales; Par. Nac. Jaragua; 8 km NW Oviedo ; 20AUG1997, P. W. Kovarik. (1 WIBF — head missing)   .

Diagnosis. This species can be distinguished by the combination of the elytral striae deeply impressed ( Fig. 209 View Figs ), strong hypomeral bead ( Fig. 27 View Figs ), antennomeres 7–10 enlarged, and the absence of an ocular depression. It most closely resembles Nesocyrtosoma skelleyi   , but can be distinguished from that species by the presence of a strong hypomeral bead ( Fig. 27 View Figs ) and broad mesoventrite ( Fig. 212 View Figs ).

Description (male). 4.5–5.0 mm long, 2.3–2.8 mm wide. Small, body elongate, moderately convex ( Figs. 209, 210 View Figs ). Dark blue to purple; antennae, mouthparts, and tarsi ferrugineous. Head densely variably punctate; largest punctures

subequal to a single eye facet, weakly to moderately impressed; extremely short golden seta emerging from each puncture. Antenna clavate, antennomeres 7–10 transverse, forming a loose club; apical antennomere subcircular; antennomeres 7–11 with stellate sensoria. Mentum with acute median keel, anteriorly raised to a point ( Figs. 10, 12 View Figs ). Ventral portion of eye not reaching subgenal sulcus ( Fig. 8 View Figs ); postgena with distinct punctures ( Fig. 12 View Figs ). Dorsal surface of pronotum densely punctate; punctures separated by 0.5–1.5 diameters. Pronotal marginal bead complete laterally, anterior margin with marginal bead effaced medially, posterior margin without marginal bead; anterior angles of pronotum obtuse, weakly produced and widely rounded apically; lateral edge of pronotum evenly curved to base; pronotum evenly convex ( Fig. 211 View Figs ). Strong hypomeral bead ( Fig. 27 View Figs ); hypomeron with distinct punctures ( Fig. 27 View Figs ). Prosternal process apically rounded, distinct marginal grooves opposite coxae joined apically ( Fig. 212 View Figs ). Elytral striae deeply impressed, present as rows of small punctures separated by 0.5–1.0 3 diameter, with a deeply impressed line through the middle of each puncture row; elytral interstriae roundly convex, scarcely punctate; scutellary striae 4–6 punctures long; scutellum triangular, normal ( Figs. 209, 211 View Figs ). Mesoventrite broad antero-posteriorly, U-shaped, excavate receiving prosternal process; metaventrite subequal to antero-postero length of mesocoxa ( Fig. 212 View Figs ). Metathoracic wing fully developed. Legs short, punctate; femora reaching beyond edge of elytron; tibiae sometimes with weak dorsal longitudinal groove ( Fig. 37 View Figs ), tibiae straight except metatibia weakly curved with vestigial tooth at apex; metatibia with small serrations extending from tooth to apical 1/3 its length ( Figs. 38 View Figs , 65 View Figs ). Abdominal depressions on 4th and 5th ventrites reduced to indistinct slits ( Fig. 74 View Figs ); intercoxal process of the first ventrite rounded with apical nipple; ventral surface densely punctate, punctures moderately to strongly impressed ( Fig. 212 View Figs ).

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

Biology. This species has been taken by beating vegetation in dry forest and hand collecting during the day.

Distribution. This species is endemic to Hispaniola. It has been collected in Parque Nacional Jaragua in Pedernales Province and Parque Nacional del Este Boca de Yuma and Parque Nacional del Este Guargauao in La Altagracia Province of the Dominican Republic ( Figs. 260 View Fig , 264 View Figs ).

Etymology. Males of this species have a series of tiny serrations on the ventral apical 1/3 of the metatibia ( Fig. 38 View Figs ), and is thus called serratum   , from the Latin word serratus.


Departamento de Geologia, Universidad de Chile


Smithsonian Institution, National Museum of Natural History


West Indian Beetle Fauna Project Collection


Florida State Collection of Arthropods, The Museum of Entomology