Serrania Species-group

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 : 57-59

Serrania Species-group — Extant Species

Two species are redescribed and 12 new species are described for the first time.

Species are listed in phylogenetic order.

Nesocyrtosoma bankense Hopp and Ivie , New Species ( Figs. 2 , 11 , 62 , 189–193 , 268 , 293 )

Type Material. HOLOTYPE: Male. VIRGIN IS: St. John; Cinnamon Bay; 03JAN1993, at light; VIBFP colrs. (from WIBF, deposited NMNH). PARA- TYPES (20 specimens, males only): 2 specimens with same label data as holotype. (2 WIBF). VIRGIN IS: St. John ; VINP, Cinnamon Bay ; 02NOV1992, at light; VIBFP colrs. (1 WIBF). VIRGIN IS: St. John ; Est. Great CinnamonBay; Cinnamon Bay , at light; 02NOV1992. M. A. Ivie. (2 WIBF). VIRGIN IS: St. John ; Estate Cinnamon Bay ; VINP, Cinnamon Bay ; 04NOV1992, at light; M. A. Ivie colr. (1 WIBF). VIRGIN IS: St. John ,; Cinnamon Bay ; 23-vi-1996 beating; B.andB. Valentine. (2 WIBF). VIRGIN IS: St. John ; Est. Lameshur Bay ; V. I.Ecol.Res.Sta.; 14–21 JULY 1994; M. S. Becker, uv light. (2 WIBF). VIRGIN IS: St. John ; Lameshure Bay , VIERS; 21–28 JULY 1994; M. S. Becker colr; ultraviolet light. (1 CMNH). VIRGIN IS: St. John ; Est. Lamesur Bay , nr.; Lameshur Bay , Reef Bay ; Trail, 14OCT1994, beat.; vines, M. A. Ivie and L. L. Ivie. (2 WIBF). VIRGIN IS: St. John ; Est. Lameshur Bay ; Europa-Lt. Lameshur; Bay, 25JULY1994; M. S. Becker, at night. (1 WIBF). VIRGIN IS: St. Thomas ; Est. Enighed Magen’s; Bay Arboretum. light; 01JAN1993. VIBFP colrs. (2 WIBF). VIRGIN IS: St. Thomas ; Est. Enighed Magen’s; Bay Arboretum. 01JAN; 1993. VIBFP colrs/ Nesocyrtosoma ; Det. J. Doyen 1995. (1 FSCA, 1 WIBF). PUERTO RICO: Guanica; For.Res. 26SEP1987; M.A.Ivie colr. 33m; beating, thornscrub. (3 WIBF).

Other Material Examined (females). VIRGIN IS: St. Thomas ; Est. Enighed Magen’s; Bay Arboretum. 01JAN; 1993. VIBFP colrs. (3 WIBF). VIRGIN IS: St. John ; Cinnamon Bay; 03JAN1993, at light; VIBFP colrs. (2 WIBF). VIRGIN IS: St. John ; Est. Lameshur Bay; V . I. Ecol.Res.Sta.; 14–21 JULY 1994; M. S. Becker, uv light. (1 WIBF). PUERTO RICO: Guanica; For.Res. 26SEP1987; M. A. Ivie colr. 33m; beating, thorn scrub. (1 WIBF). PUERTO RICO; Hwy. 371, Km. 10; July25, 1979; C.W. O’Brien / under bark. (1 WIBF). PUERTO RICO; Hwy. 371, Km. 10; July 25, 1979; L.B. O’Brien. (1 WIBF). Poncee P. R .; VII-21- 33; Rcoa Kley / on leaf; of Moca; SJ # 4363. (1 NMNH). PUERTO RICO: Guanica; For.Res. 26SEP1987; M.A.Ivie colr. 33m; beating, thornscrub. (2 WIBF). PUERTO RICO; CambalacheForest; Res., July 28,1979; C.W.O’Brien. (1 MCZC) .

Notes. Although the females of this species can be identified, they can be easily confused with Nesocyrtosoma puertoricense , and are thus not designated as paratypes.

Diagnosis. This species can be distinguished from all other species by the combination of the dark ferrugineous to black color, deeply impressed elytral striae ( Fig. 189 ), absence of a hypomeral bead, antennomeres 7–10 enlarged, presence of an ocular depression ( Fig. 193 ), intercoxal process of first ventrite with apical nipple ( Figs. 76 , 192 ), and the very weak to absent longitudinal grooves on the tibiae. It is nearly identical to N. puertoricense and N. curvum , but can be distinguished from the former by the weak to absent longitudinal grooves on the tibiae and the male metatibia. Males of N. bankense have a ventral metatibial tooth proximad apex ( Fig. 62 ), while the males of N. puertoricense have a ventral metatibial tooth at the apex ( Fig. 64 ). Nesocyrtosoma bankense can be distinguished from N. curvum by the antenna and male metatibia. Nesocyrtosoma bankense has antennomeres 7–10 enlarged and the male metatibia is slender, gradually curved toward the apex with a tooth proximad apex ( Fig. 62 ), whereas N. curvum has antennomeres 6–10 enlarged and the male metatibia is broad and abruptly emarginate towards the apex ( Fig. 69 ).

Description (male). 4.0– 5.5 mm long, 2.0–3.0 mm wide. Small, moderately convex, elytra widest in apical half, tapered at apex ( Figs. 189, 190 ). Dark ferrugineous to black; antennae, mouthparts, and tarsi ferrugineous. Head densely variably punctate dorsally; largest punctures larger than a single eye facet, weakly to moderately impressed; extremely short golden seta emerging from each puncture. Antenna clavate, antennomeres 7–10 weakly widened apically, 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 ). Ventral portion of eye not reaching subgenal sulcus ( Fig. 8 ); ventral ocular groove present ( Fig. 193 ); postgena without distinct punctures. Dorsal surface of pronotum densely punctate; punctures separated by 0.5–1.0 diameters. Pronotal marginal bead complete laterally, anterior margin with marginal bead effaced medially, posterior margin lacking marginal bead; anterior angles of pronotum right, weakly produced and widely rounded apically; lateral edge of pronotum evenly curved to base; pronotum evenly convex ( Fig. 191 ). Hypomeron without distinct punctures. Prosternal process apically rounded, with distinct marginal grooves opposite coxae joined apically ( Fig. 192 ). 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 the punctures, connecting the row of punctures; elytral interstriae roundly convex, scarcely punctate, shagreened; scutellary striae 4–6 punctures long, nearly reaching the elytral suture; scutellum triangular, normal ( Figs. 189, 191 ). Mesoventrite broad antero-posteriorly, Ushaped, excavate, receiving prosternal process; metaventrite subequal to anteropostero length of mesocoxa ( Fig. 192 ). Metathoracic wing fully developed. Legs short, punctate; femora barely reaching beyond edge of elytra; tibia slightly shorter than femur; tibial dorsal longitudinal groove very faint or absent; metatibia with tooth proximad apex ( Fig. 62 ). Abdominal depressions on 4th and 5th ventrites reduced to indistinct slits ( Fig. 74 ); intercoxal process of first ventrite rounded, without apical nipple, not reaching past metacoxa; ventral surface densely punctate, punctures weakly impressed ( Fig. 192 ).

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

Biology. This species has been taken by beating dead branches, vines, and thorn scrub at night in dry tropical forest, at light, under bark, and on a leaf.

Distribution. This species is known from the Virgin Islands of St. John and St. Thomas ( Fig. 268 ). It has been collected on Great Cinnamon Bay and Lameshur Bay on St. John and the Magen’s Bay Arboretum Estate Enighed on St. Thomas. It is also known from the Guánica Forest Reserve in southwestern Puerto Rico ( Fig. 268 ).

Etymology. This is the only species of Nesocyrtosoma known to occur on several islands of the Puerto Rican Bank, and is thus called bankense .

Figures

Figs. 1–4. Dorsal view of head. 1) Nesocyrtosoma otus with punctures on the dorsal surface of head smaller than a single eye facet (sp 5 small puncture); 2) Nesocyrtosoma bankense with dorsal punctures on the surface of the head subequal or larger than a single eye facet (lp 5 large puncture; 3) Cyrtosoma picea with clypeal membrane exposed (CM 5 clypeal membrane); 4) Nesocyrtosoma inflatum with clypeal membrane concealed.

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. 62–73. Male metatibia of the Serrania species-group species. 62) N. bankense; 63) N. garridoi; 64) N. puertoricense; 65. N. serratum; 66) N. skelleyi; 67) N. nearnsi; 68) N. teresitae; 69) N. curvum; 70) N. guerreroi; 71) N. virens; 72) N. cubanense; 73) N. dentatum.

Figs. 189–199. 189–193: Nesocyrtosoma bankense. 189) Habitus, dorsal; 190) Habitus, lateral; 191) Pronotum; 192) Thoracic sterna; 193) Ocular depression. 194–199: Nesocyrtosoma fernandoi (photos taken with MiScopeH at FMZC). 194) Habitus, dorsal; 195) Habitus, lateral; 196) Pronotum; 197) Ocular depression; 198) Thoracic sterna; 199) Holotype locality label.

Figs. 268–269. Nesocyrtosoma species distribution maps. 268) Distributions of N. bankense, N. curvum, and N. puertoricense; 269) Distribution of N. lacrima on Montserrat.

Figs. 293–304. Illustrations of male genitalia in dorsal and lateral view of the Serrania species-group species. 293) Nesocyrtosoma bankense; 294) N. garridoi; 295) N. puertoricense; 296) N. serratum; 297) N. skelleyi; 298) N. nearnsi; 299) N. teresitae; 300) N. curvum; 301) N. guerreroi; 302) N. virens; 303) N. cubanense; 304) N. dentatum.

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. 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.