Nesocyrtosoma mutabile 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 : 48-50

Nesocyrtosoma mutabile Hopp and Ivie , New Species

( Figs. 56 , 165–168 , 266 , 287 )

Type Material. HOLOTYPE: Male. DOMINICAN REPUBLIC; Pedernales Prov., PN Sierra; de Baoruco, Las Abejas; 18u 09.0119N, 71u 37.3429W; 1,150 meters 11 July 2004; blacklight/ S. W. Lingafelter. ( NMNH). PARA- TYPES (30 specimens): 2 specimens with same data as holotype. (1 NMNH, 1 WIBF). DOM. REP: Prov. Pedernales; 26 km N. Cabo Rojo, 915m; 09 SEP 1988, wet forest; at light and night beating; M. Ivie, Philips and Johnson. (3 WIBF). DOM. REP.: Prov. Pedernales; ca. 35 km N CaboRojo; Las Abejas, 1,250m; 26 AUG 1988, mixed forest; M. Ivie, Philips and Johnson. (2 WIBF). DOMINICAN REPUBLIC:; Pedernales. La Abeja,; 38 km NNW Cabo Rojo,; (18-099N, 71- 38W).; 1,250 m. 15 July 1987; J. Rawlins, R. Davidson. (3 CMNH, 1 WIBF — with Carnegie Museum Specimen Numbers: CMNH-349,424, CMNH-349,513, CMNH-349,692, CMNH-377,372). DOMINICAN REPUBLIC:; Pedernales Prov., PN Sierra; de Baoruco, La Abejas, 1,150 m.; 18u 09.0119N, 71u 37.3429W; 18-VI-2005, Gino Nearns. (2 FSCA). DOMINICAN REPUBLIC:; Pedernales. 26 km; N Cabo Rojo .; 18-06N, 71-38W, 730m / 19–25 July 1990; L. Masner, J. Rawlins; C. Young. Wet deciduous; forest; intercept trap. (1 CMNH). Las Abejas; Pedernales; 19-V-92; guerrero.eelmonte. (1 WIBF). DOMINICAN REP.: Prov.; Barahona, nr. Filipinas; Larimar Mine; 20–26-VI-; 1992; R. E. Woodruff and; P. E. Skelley; at light. (1 FSCA, 1 WIBF). DOMINICAN REP.: Prov.; Barahona, nr. Filipinas; Larimar Mine; 20–26-VI-; 1992; R. E. Woodruff and; P. E. Skelley; at night. (1 FSCA, 1 UASD, 1 WIBF). DOMINICAN REP: Prov.; Barahona, nr. Filipinas; Larimar Mine: 20–26-VI-; VII-1992: R. E. Woodruff,; P. E. Skelley; beating; misc. at night. (1 FSCA). DOMINICAN REP.: Prov.; Barahona, nr. Filipinas,; Larimar Mine: 26-VI-7-; VII-1992: R. E. Woodruff,; P. E. Skelley; day catch. (1 FSCA). DOMINICAN REP.: Prov.; Barahona, nr. Filipinas; Larimar Mine: 26-VI-7-; VII-1992: R. E. Woodruff,; P. E. Skelley; at light. (1 FSCA). DOMINICAN REPUBLIC; Barahona Prov., Paraiso; Rio Nazaito. Blacklighting /; Log picking 18u009N, 71u069W; 7 July 2004 S. Lingafelter. (1 NMNH, 1 WIBF). DOMINICAN REPUBLIC:; Barahona. 5 km SE Polo,; slopes of Loma La Torre ; 18-03N, 71- 16W. 980 m. / 18 July 1992. Disturbed; forest with coffee.; C. Young, R. Davidson,; S. Thompson, J. Rawlins. (2 CMNH, 1 WIBF). DOM. REP: Prov. Barahona; 18km Cabral, Polo Rd. ; 1.5 km SE Montear Nuevo; 18u 06.4529N, 71u 14.7179W; 26JULY1999, 1,020m / M. A. Ivie and; K. A. Guerrero. (1 WIBF).

Other Material Examined. DOM.REP.:Prov. Pedernales; ca. 35 km N CaboRojo; Lab Abejas , 1,250m; 26 AUG 1988, mixed forest; M. Ivie, Philips and Johnson. (2 WIBF — disarticulated). DOM.REP.:Prov. Pedernales; 24km N. Cabo Rojo, 610m; 20-AUG-09SEP1988, wet forest; flight intercept trap; M. Ivie, Philips and Johnson. (1 WIBF — disarticulated) .

Diagnosis. This species can be distinguished by the combination of the more elongate and broad body shape ( Fig. 165 ), more transverse pronotum with less acutely rounded anterior angles ( Fig. 167 ), antennomeres 7–10 weakly widened apically, and males with an obvious meso- and metatibial tooth ( Fig. 56 ). This species closely resembles N. darlingtoni , but can be distinguished from that species by the broader body ( Fig. 165 ), shallowly excavate mesoventrite ( Fig. 168 ), and the pronotum with more widely rounded, less produced anterior angles ( Fig. 167 ). It is also similar to N. altagracia , but can be distinguished from that by the more transverse pronotum with the anterior angles more obtuse, less produced, and more widely rounded ( Fig. 167 )

Description (male). 8.5–10.5 mm long, 4.5–6.0 mm wide. Body elongate, moderately convex, broad, tapering weakly at apex ( Figs. 165, 166 ). Purple to black; antennae, mouthparts, and tarsi tending to be the same color as the legs. Head densely punctate, punctures variable, largest punctures subequal to a single eye facet, lightly to 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 broad median keel raised anteriorly to a point ( Fig. 13 ); ventral portion of eye reaching subgenal sulcus ( Fig. 9 ); postgena without circular punctures. Dorsal surface of pronotum scarcely punctate; shagreened. Pronotal marginal bead complete laterally, anterior and posterior margin with marginal bead effaced medially; anterior angles of pronotum right, moderately produced and apically narrowly rounded; lateral edge of pronotum sinuate at base; pronotum evenly convex ( Fig. 167 ). Hypomeron with distinct punctures. Prosternal process apically rounded; indistinct marginal grooves opposite coxae not joined apically ( Fig. 168 ). Elytral striae not impressed, present as small discontinuous elongate punctures; punctures separated by 0.5–1.0 diameters; elytral interstriae flat; scarcely punctate; shagreened; scutellary striae long; 4–6 punctures long, nearly reaching the elytral suture; scutellum triangular, normal ( Figs. 165, 167 ). Mesoventrite thin antero-posteriorly, shallowly excavate, widely U-shaped, receiving prosternal process; metaventrite subequal in antero-postero length of mesocoxa ( Fig. 168 ). Metathoracic wing fully developed. Legs long, slender, punctate, apical portion of femur reaching beyond elytron; tibiae ventrally apically weakly curved; meso- and metatibia with small, but obvious ventral apical tooth ( Fig. 56 ). Abdominal depressions on 4th and 5th ventrites present as weakly impressed pits ( Fig. 75 ); intercoxal process of first ventrite apically rounded; ventral surface densely punctate, punctures weakly impressed ( Fig. 168 ).

Female. Identical to male, except tibiae straight and meso- and metatibiae lacking ventral apical tooth.

Notes. The specimens of this species vary in size by the locality in which they are found. The specimens collected in Pedernales are larger than those collected in Barahona.

Biology. This species has been taken at light, at night, during the day, by beating dead branches, on logs at night, and under bark in mixed Magnoliaceae forests.

Distribution. This species is endemic to Hispaniola and is quite widespread in Barahona and Pedernales Provinces of the Dominican Republic ( Figs. 260 , 266 ).

Etymology. The species epithet comes from the Latin word mutabilis, meaning changeable, variable or inconstant, referring to the idea that this species is variable in size depending on where it is found.

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. 161–168. 161–164: Nesocyrtosoma darlingtoni. 161) Habitus, dorsal; 162) Habitus, lateral; 163) Pronotum; 164) Thoracic sterna. 165–168: Nesocyrtosoma mutabile. 165) Habitus, dorsal; 166) Habitus, lateral; 167) Pronotum; 168) 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. 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. 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. 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.