Gymnopholus (Niphetoscapha) nitidus Gressitt & Sedlacek

Riedel, Alexander & Kilmaskossu, Agust, 2017, Revision of the subgenus Niphetoscapha Heller of Gymnopholus Heller (Coleoptera, Curculionoidea, Entiminae, Eupholini) and a new species with epizoic symbiosis from West New Guinea, Zootaxa 4254 (3), pp. 339-356: 351-353

publication ID

https://doi.org/10.11646/zootaxa.4254.3.3

publication LSID

lsid:zoobank.org:pub:88F93D05-41AD-4726-A16C-76CDE023B505

persistent identifier

http://treatment.plazi.org/id/291D9614-A962-B721-D9D5-F902FCD1FF52

treatment provided by

Plazi

scientific name

Gymnopholus (Niphetoscapha) nitidus Gressitt & Sedlacek
status

 

Gymnopholus (Niphetoscapha) nitidus Gressitt & Sedlacek  

( Figs. 3–4 View FIGURES 1 – 4 , 10 View FIGURES 9 – 12 , 14 View FIGURES 13 – 16 , 18 View FIGURES 17 – 20 , 22 View FIGURES 21 – 24 , 34 View FIGURES 33 – 38 , 39 View FIGURE 39 , 42 View FIGURE 42 )

Gymnopholus (Symbiopholus) nitidus Gressitt & Sedlacek, 1967: 494   (type locality: Ibele valley).

Diagnosis. Body subglabrous, with sparse, thin setae. Elytra with subapical tubercles distinct, laterally projecting; elytral base usually with fovea filled with brownish exudates.

Redescription. Males ( Fig. 3 View FIGURES 1 – 4 ). Length. Total length 20.0– 25.5 mm (n=6, x =23.7 ± 2.0); pronotum + elytron 11.5–20.0 mm (n=6, x =17.1 ± 3.6).

Color of integument black; body almost nude.

Head ( Fig. 10 View FIGURES 9 – 12 ) weakly microreticulate, punctulate, between eyes subequal (1.01 X) to vertical diameter of eye. Eyes weakly prominent from outline of head. Gena ca. half as long (0.48 X) as vertical diameter of eye.

Rostrum ( Fig. 10 View FIGURES 9 – 12 ) 1.99–2.48 X longer than wide at base (n=6, x =2.20 ± 0.19); maximum width in front of antennal insertion 1.33–1.49 X width at base (n=6, x =1.43 ± 0.07). Dorsum nude, with marked median impression; without dorsolateral furrows; antennal scrobes subglabrous, sparsely setose.

Antenna. Funicle + club 1.60–1.94 X length of scape (n=8, x =1.77 ± 0.13); club 3.78 X as long as wide.

Thorax. Pronotum 1.09 X longer than wide; sides weakly sinuate, widest in apical half; disc nude, densely punctate with minute punctures interspersed with coarse punctures; sides transversely rugose; medially with shallow impression. Thoracic venter subglabrous, with sparse thin setae; mesoventrite and mesocoxae with dense recumbent setae.

Elytron 3.91–4.32 X longer than wide between humeri (n=6, x =4.10 ± 0.15), at greatest width 1.07–1.15 X wider than between humeri (n=6, x =1.10 ± 0.04); sides weakly converging to subtruncate apex; almost nude, with sparse long setae; surface polished, with scattered punctures, but without distinct microsculpture or wrinkles; intervals 4–6 basally beside humerus with deep impression containing orange substance ( Fig. 39 View FIGURE 39 ), presumably produced by glands; epipleural edge simple, without fringe of setae; apical declivity at suture with blunt knob, further ventrad with pair of distinct, laterally projecting knobs.

Legs. Surface somewhat shining, densely provided with granules and thin suberect setae. Femora weakly clavate, moderately long; metafemur in repose not reaching elytral apex.

Abdomen. Ventrite 1–2 medially concave; subglabrous, with sparse, thin setae; ventrite 5 flat, subapically densely setose. Penis ( Fig. 22 View FIGURES 21 – 24 ) with asymmetrical apical tip markedly widened. Transfer apparatus ( Fig. 34 View FIGURES 33 – 38 ) ca. 1.6 X as long as wide at base.

Females ( Fig. 4 View FIGURES 1 – 4 ). Same as males except: Length. Total length 23.0–29.0 mm (n=6, x =26.3 ± 2.4); pronotum + elytron 17.0– 23.5 mm (n=6, x =20.5 ± 2.6). Rostrum 1.46–2.02 X longer than wide at base (n=6, x =1.78 ± 0.21); maximum width in front of antennal insertion 1.23–1.36 X width at base (n=6, x =1.31 ± 0.06).

Elytron wider, 3.79–4.11 X longer than wide between humeri (n=6, x =4.01 ± 0.12), at greatest width 1.10–1.19 X wider than between humeri (n=6, x =1.14 ± 0.03); sides more rounded.

Intraspecific variation. Elytral surface usually sparsely setose with suberect, shorter or longer setae, worn-off in older specimens; shape and depth of fovea at elytral base variable, larger or smaller, in some specimens completely absent; exudates usually but not always present in fovea of elytra base.

Material examined. WEST NEW GUINEA, Jayawijaya Reg.: 5 males, 1 female, Kwiyawagi , 2750 m, 9– 10.XII.1995 ( ARC)   ; 3 males, 1 female, Wanuga—Kwiyawagi [S03 58´ E138° 20´], 2750–3000 m, 9.XII.1995 (ARC); 2 females, Tiom—Wanuga , 2600–2900 m, 7.XII.1995 ( ARC)   ; 2 males, 1 female, Tiom , Wanuga, 2750– 2900 m, 8.XII.1995 ( ARC)   ; 6 males, 3 females, Moss forest between Theila and Lake Habbema, 2800–2950 m, 22.X.1993 ( ARC, SMNK)   ; 1 male, Theila -> Lake Habbema, ca. 2000 m, 17.X.1993 ( ARC)   ; 4 males, 5 females, Theila , 2500 m, 23.X.1993 ( ARC, SMNK)   ; 2 females, Jiwika -> Wandaku [S03° 56.5’ E138° 57.1’], 1700–2300 m, 2.IX.1991 (ARC); 1 female, Pass Valley [E 139°05´S 03° 51´], 1900 m, 15–16.IX.1990 ( ARC) GoogleMaps   ; 3 males, 1 female, Ilugwa [E 138° 55´S 03° 51´], Melanggama , 1900–2200 m, 9–12.IX.1990 GoogleMaps   ; 17 males, 16 females, Yohosim—Kiroma , 2500–2700 m, 13.XI.1991 ( ARC, SMNK)   ; 8 males, 6 females, Kiroma [S04 14.83´ E139° 10.77´], ca. 2500 m, 13.IX.1991 (ARC); 2 males, 2 females, Kiroma—Gn. Elit , ca. 2800–3300 m, 14.IX.1991 ( ARC)   ; 1 male, N Wamena, Poga [E 138° 32´ S 03° 50´], 2100–2500 m, 6–7.IV.1999 (ARC); 2 exx ( ARC 2637 View Materials , ARC 2638 View Materials ), W Wamena, road to Lake Habbema , S04° 08.256´E138° 49.049´, 2770 m, 20-VII-2010 ( SMNK) GoogleMaps   ; 2 exx (ARC2640, ARC2643), N Wamena, Poga, S03° 47.575´ E138° 33.155´ to S03° 47.473´ E138° 33.163´, 2620– 2715 m, 15-VII-2010 (SMNK).

Other material reported. WEST NEW GUINEA, Jayawijaya Reg.: Holotype, male, Moss forest camp [E 138° 43´S 04° 00´], 2600–2800, 9.X.–5.XI.1938, Neth. Ind.-Amer.-New Guinea Exped. ( BPBM 7461 View Materials ); 21 paratypes, same data as holotype GoogleMaps   ; 11 paratypes, Moss forest camp [E 138° 43´S 04° 00´], 2850 m, 23.VIII.1938 GoogleMaps   ; 1 female, Iebele Camp, 2250 m (NNML); 22 paratypes, Iebele Camp [E 138° 46´S 03° 58´], 2250 m GoogleMaps   ; 1 paratype, Lake Habbema [E 138° 40´S 04° 08´], 3250–3300 m, ult.VII-ult. VIII.1938. ( Gressitt & Sedlacek, 1967). GoogleMaps  

Distribution ( Fig. 42 View FIGURE 42 ). Paniai Reg. (Kwiyawagi, Tiom, Poga, area below Lake Habbema, Ibele, Ilugwa, Jiwika, Pass Valley, Kiroma). Elevation: 1900–2800 m.

NEW

University of Newcastle

ARC

Atlantic Reference Centre

SMNK

Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)

BPBM

Bishop Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Curculionidae

Genus

Gymnopholus

Loc

Gymnopholus (Niphetoscapha) nitidus Gressitt & Sedlacek

Riedel, Alexander & Kilmaskossu, Agust 2017
2017
Loc

Gymnopholus (Symbiopholus) nitidus

Gressitt 1967: 494
1967