Nesocyrtosoma nearnsi 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 : 65-66

Nesocyrtosoma nearnsi Hopp and Ivie , New Species

( Figs. 67 , 217–220 , 265 , 298 )

Type Material. HOLOTYPE: Male. DOMINICAN REPUBLIC:; La Vega Prov., PN Armando; Bermudez, km 1–3 along trail; W of La Cienga , 900–1,100,; 19u 01.7539N, 70u 54.6549W; 6-VI-2005; Gino Nearns. ( FSCA) . PARATYPES (19 specimens): 2 FSCA specimens with the same label data as holotype. DOM.REP: Prov. La Vega; Par.Nac.ArmandoBermudez; LaCienaga-Los Tablones ; 970– 1,080m, 23 JULY 1993; D.S.Sikes and R. Rosenfeld. (1 WIBF). DOMINIC.REP.: Prov. La Vega; Par.Nac.Almando Bermudez ; CordilleraCent , LosTablones ; 03SEP1988 , 1,220m, beating; M.A.Ivie and K.A. Johnson. (1 WIBF) . DOMIN- ICAN REPUBLIC:; La Vega Province; 1km. NW Manabao ; 5-VI-1994; coll. M.C. Thomas. (4 FSCA, 1 WIBF) . DOMINICAN REPUBLIC; La Vega Prov., 9km; W. Jima 24-V-1992; coll. M.C. Thomas. (1 WIBF) . DOM. REP., LaVega, 20; km.SW. PiedraBlanca ; May 29, 1978 CWandLB; O’BrienandMarshall. (1 FSCA, 1 WIBF). DOM. REP., LaVega,; 24km. E. El Rio ; August 3, 1978 ; C.W.O’Brien. (1 WIBF). DOM. REP., LaVega,; 24km.SE. Constanza ,; August 4, 1979 ; C.W.O’Brien. (1 WIBF). cloudforest; vic. Valle Nuevo; Aug’ 38, Dom. Rep. ; c. 6,000 ft, Darl. / Nesocyrtosoma ; n. sp.; Det. J. Doyen 1988. (1 MCZC). DOM.REP: Prov. La Altagracia; P.N.del Este , Boca de Yuma , entr. to Par. , Nac ; del Este , 06AUG1999 , 12m; 18u 21.9049N, 68u 37.0949W; M.A.Ivie beating vegetation. (1 WIBF). San Lorenso ; R. Dom . VI.27-29,15. (1 AMNH). DOM.REP: Prov. Hato Mayor; W. Sabana de la Mar; Par. Nac. Los Haitises ; bosque humido, 01 JULY 1992; M.A. and R.O. Ivie colrs/ Nesocyrtosoma ; det. M. A. Ivie 1994. (1 WIBF). DOMINICAN REPUBLIC:; Hato Mayor. Parque Los; Haitises , 3 km W Cueva; de Arena , 19-04N,69-29W/ 20 m. 7–9 July 1992 ; R. Davidson, J. Rawlins ; S. Thompson, C. Young; Mesic lowland forest. (1 CMNH) .

Other Material Examined. HAITI: Department ; du Sud, Ville Formon ; 31 km NW Les Cayes,; S slope Morne Formon; Massif de La Hotte,/ 18-20N, 74- 01W; 1,405m, 7–8 Sept 1995; R . Davidson, G. Onore,; J. Rawlins. Disturbed; forest and fields/ Carnegie Museum; Specimen Number; CMNH-377,284. (1 CMNH) .

Notes. The specimen from Haiti is not included in the type series as it is the only specimen from Haiti and varies slightly in the placement of the metatibial tooth. However, this is likely a simple case of variation, as this specimen does not have any other differences from the Dominican specimens.

Diagnosis. This species can be distinguished by the combination of elytral striae present as small, almost continuous punctures, with a weakly impressed line

through the middle of the puncture row, the interstriae scarcely punctate, and the eyes weakly laterally inflated ( Fig. 219 ). The males of this species are distinguished by the metatibia strongly curved with a small ventral tooth at the apex and serrations extending from the tooth towards the basal third of the tibia (Figs. cf. 38, 67).

Description (male). 4.0– 6.5 mm long, 2.0– 3.5 mm wide. Small, broad, moderately convex ( Figs. 217, 218 ). Shining black with metallic greenish-bronze luster; antennae, mouthparts, and tarsi ferrugineous. Head densely punctate dorsally; punctures smaller than a single eye facet, lightly 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 ( Figs. 10, 12 ), area laterad ridge concave, anteriorly raised to a weak point. 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 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. 219 ). Hypomeron without distinct punctures. Prosternal process apically rounded, marginal grooves indistinct ( Fig. 220 ). Elytral striae lightly impressed, present as rows of small punctures separated by 0.5–1.0 3 diameter, with a lightly impressed line through the middle of each row of punctures; elytral interstriae flat, scarcely punctate; scutellary striae 6–8 punctures long; scutellum triangular, normal ( Figs. 217, 219 ). Mesoventrite broad antero-posteriorly, U-shaped, excavate, receiving prosternal process; metaventrite subequal to antero-postero length of mesocoxa ( Fig. 220 ). Metathoracic wing fully developed. Legs short, punctate; only metafemur reaching beyond edge of elytron; tibiae with distinct dorsal longitudinal groove ( Fig. 37 ), all but metatibia straight; metatibia strongly curved with ventral tooth at apex ( Fig. 67 ), serrations extending ventrally from the tooth towards the basal third of metatibia. Abdominal depressions on 4th and 5th ventrites reduced to indistinct slits ( Fig. 74 ); intercoxal process of first ventrite rounded with apical nipple; ventral surface densely punctate, punctures weakly impressed ( Fig. 220 ).

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

Biology. This species has been collected by beating dead branches in high elevation pine forest. It has also been collected by beating vegetation at night in dry and moist tropical forests.

Distribution. This species is endemic to Hispaniola. It has been primarily collected in La Vega Province in the Dominican Republic. In this province, it has been taken at Parque Nacional Armando Bermudez, near Manabao, Jima, Piedra Blanca, El Rio, and Constanza. It has also been taken in La Altagracia Province at Parque Nacional del Este Boca de Yuma and in San Lorenso and Parque Nacional Los Haitises in Hato Mayor Province ( Figs. 260 , 265 ). Also, this species has been collected once in Haiti on the south slope of Morne Formon Massif de La Hotte ( Figs. 261 , 265 ).

Etymology. This species is named for Eugenio H. Nearns, who played an integral part in the planning and overall success of our trip to Cuba, and is the collector of the holotype of this species.

Figures

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. 217–224. 217–220: Nesocyrtosoma nearnsi. 217) Habitus, dorsal; 218) Habitus, lateral; 219) Pronotum; 220) Thoracic sterna. 221–224: Nesocyrtosoma productum. 221) Habitus, dorsal; 222) Habitus, lateral; 223) Pronotum; 224) Thoracic sterna.

Figs. 265–267. Nesocyrtosoma species distribution maps. 265) Distributions of N. gebieni, N. hispaniolae, N. neibaense, N. inflatum, N. skelleyi, and N. nearnsi; 266) Distributions of N. mutabile, N. garridoi, N. guerreroi, and N. cubanense; 267) Distributions of N. larseni and N. cuprosum.

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. 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. 35–38. Characters of the legs. 35) Nesocyrtosoma inflatum with trochanters reduced and setose; 36) Nesocyrtosoma otus with metafemur emarginate at apex; 37) Nesocyrtosoma virens with protibia with dorsal longitudinal groove; 38) Nesocyrtosoma serratum with ventral metatibial serrations.

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.

Fig. 260. Map of the provinces of the Dominican Republic.

Fig. 261. Map of the departments of Haiti.