Lymantes nadineae Anderson, 2009

Anderson, Robert S., 2016, A Taxonomic Revision of the GenusLymantesSchönherr, 1838 (Coleoptera: Curculionidae: Molytinae: Lymantini) in the United States Ofamerica, The Coleopterists Bulletin 70 (1), pp. 111-124 : 111-124

Lymantes nadineae Anderson, 2009 ( Figs. 8–9 , 16 , 21 )

Lymantes nadineae Anderson 2009: 117 .

Diagnosis. Eyes fully lacking with no external trace of eye facets or ocular swelling ( Fig. 16 ). Punctures of body generally small, widely spaced, those of pronotal disc shallow, small, widely spaced, the distance between punctures much greater than diameter of a puncture ( Fig. 9 ). Punctures of striae of elytral disc small, shallow, and linearly arranged, interstriae distinct, much wider than width of a strial puncture, disc with more or less 30 punctures along each complete strial length ( Fig. 9 ). Dorsal vestiture short and very fine, each seta about as long as elytral strial puncture ( Fig. 8 ). Legs long and spindly, hind femora about 6X as long as wide, apex reaching slightly beyond suture between ventrites 2 and 3. Aedeagus as in Fig. 21 .

Description. Male, length 3.5 mm, width 1.1 mm. Color pale orange-brown throughout. Head globose, minutely finely reticulate. Eyes fully lacking, ocular swelling not evident. Rostrum with antennae inserted slightly beyond apical 1/3 of length, slightly wider in dorsal view beyond antennal insertions, scrobes narrowly visible at point of antennal insertions in dorsal view. Rostrum about 0.7X pronotal length, slightly arcuate in lateral view, dorsally moderately deeply, moderately densely punctate, punctures separated by about their own diameter, row of punctures above scrobe coalescent, forming shallow groove. Ventrally irregularly punctate, most punctures coalescent, with median posterior extension represented by narrowly separated, lateral, cariniform ridges, extended to base of rostrum. Antennae with scape almost reaching base of rostrum, funicle with articles 1 and 2 elongate, subequal in length, articles 3–6 subquadrate, article 7 wider than long, wider towards apex. Pronotal width about 0.7X length, lateral margins slightly arucate, widest about midlength, supapical constriction not evident dorsally, distinctly impressed laterally bordered posteriorly by 2–3 crenulae, disc with punctures shallow, small, widely spaced, distance between punctures much greater than diameter of a puncture, each puncture with a small, fine, erect seta. Elytra about 1.8–2.0X as long as wide, lateral margins subparallel from behind humeri to apical 1/4, humeri not pronounced, discal striae with small, shallow, linearly arranged punctures numbering more or less 30 per complete discal stria, interstriae finely punctate, shiny, much wider than width of a strial puncture, punctures each with fine, short, erect seta, each seta about as long as elytral strial puncture. Striae 1–6 complete to base, 7 and 8 fused opposite metacoxae, not continuous to base, stria 10 terminating opposite metacoxa. Venter uniformly shallowly, sparsely, regularly punctate, punctures well-spaced, except punctures larger, deeper, and more solely spaced on ventrite 5. Abdominal ventrites 1 and 2 very long, each about as long as ventrites 3–5 combined, ventrites 3 and 4 very short, subequal in length, ventrite 5 about twice as long as 3 and 4 combined. Legs long and slender, sparsely shallowly punctate, punctures well-spaced, femora extended slightly beyond suture between ventrites 2 and 3, about 6X as long as wide, tibiae straight, slender, about as long at femora. Tarsi slender, ventrally with few scattered setae, tarsal claws absent (likely broken as single known male was found dead). Aedeagus with pedon short, very slightly longer than wide; internal sac with extensive internal sclerotization in form of a pair of distal arciform sclerites, one (darker) situated more dorsally, basally with pair of laterally situated helical (twisted) band-like sclerites surrounding an irregularly shaped median apical complex; struts long, about 3X length of pedon.

Female differs from male as follows: length 3.8–5.0 mm, width 1.2–2.0 mm. Rostrum with antennae inserted slightly proximad of apical 1/3 of length. Pronotum more elongate, width about 0.6X length, individual punctures less evident, particularly on disc. Elytral striae not as deeply impressed. Tarsi with claws (but single known male found dead). Female not dissected.

Distribution. This species is known from caves in central Texas. The species was described from specimens from Travis and Williamson Counties and, therefore, the Bexar County localities reported below are new.

Material Examined. Holotype male ( CMNC), Texas: Williamson County, Electro-Mag Cave , 27 Dec 2006, P. Paquin, C. Crawford, K. White, found dead on a flowstone . Allotype female ( CMNC), Travis County, Tooth Cave , 19 May 1965, T. C. Barr . Paratype female ( TMMC) , Bexar County, Black Cat Cave , 29 May 2009, P. Paquin PP-0709). Bexar County , Root Canal Cave, 26 Oct 1995, J. Reddell, M. Reyes, (1 female, TMMC) . Bexar County, Root Canal Cave , Camp Bullis, 7 Sept 1998, J. Reddell, M. Reyes, (1 female, CMNC) . Bexar County, Oblate Pit #3, 30 Jun 2009, R. Myers, (1 female, CMNC) . Williamson County, Phraetica Cave , 20 June 2002, M. Warton (1 female, CMNC) .

Figures

Figs. 4–13. Lymantes species, lateral and dorsal habitus. 4–5) L. scrobicollis; 6–7) L. repens; 8–9) L. nadineae;

Figs. 14–18. Lymantes species, head, lateral view. 14) L. scrobicollis; 15) L. repens; 16) L. nadineae; 17) L. fowleri; 18) L. obrieni.

Figs. 19–23. Lymantes species, male aedeagus, dorsal view. 19) L. scrobicollis; 20) L. repens; 21) L. nadineae;