Temnogastrus humeralis (Heller) Riedel, 2024

Riedel, Alexander, 2024, Taxonomic review of weevils of the tribe Celeuthetini, mainly from Sundaland, Sulawesi and the Lesser Sunda Islands (Coleoptera, Curculionidae, Entiminae), Zootaxa 5464 (1), pp. 1-75 : 66-67

Temnogastrus humeralis (Heller) , comb. n.

Piezonotus humeralis Heller, 1914: 309 . Type locality: C-Bali, Mt. Bratan .

Description. Lectotype ( Fig. 38a ). Length. Pronotum plus elytron 8.70 mm. Integument black, partly covered with scattered scales; small recumbent ovate white to greyish scales and interspersed subrecumbent bristles; meso- and metathorax laterally densely squamose. Head with vertex microreticulate, punctate-rugose, with scattered scales. Rostrum ca. as long as wide (1.05 X), sides subparallel; dorsum in basal half narrow, with furrows along midline. Pronotum ca. as long as wide (1.03 X); dorsally weakly flattened; granulate-scabrous. Elytra 1.40 X as long as wide; dorsally flattened, irregularly punctate-granulate; along humeri with bands of denser, overlapping scales; above declivity with darker transverse band of larger glabrous granules; declivity with erect bristles. Abdomen. Ventrites 3–5 with dense pubescence of soft erect hairs. Genitalia. Penis ( Fig. 38b ) with sides of body subparallel, apex rounded. Body containing endophallic sclerite with curved, hook-shaped apex. Apodeme 1.9 X as long as body of penis. Intraspecific variation. Length. Pronotum plus elytron 5.70–8.70 mm.

Material examined. Type specimens. Male, lectotype by present designation: INDONESIA, Bali: Gn. Bratan, 1200–2000 m, 1913, E. Stresemann; labels ( Fig. 38c ); condition: fair; formerly pinned through right elytron; genitalia in glycerol in microtube; DNA extraction ARC5048 (sequencing failed) ( SMTD) . Paralectotypes: 1 ex, same data as lectotype ( SMTD) ; 3 exx, C-Bali, Danau Bratan, ca. 800 m, 1913, E. Stresemann ( SMTD) ; 1 ex, N-Bali, Buleleng, 1913, E. Stresemann ( SMTD) . Other material examined: INDONESIA, Bali: 1 ex, E-Bali, Kintamani, E. Stresemann ( SMTD); ARC3543 ( GenBank # LN866362), C-Bali, Bedugul, Gn. Catur, S08° 15.6´E115° 11.3´, 1300–1800 m, 07-XI-2007 ( SMNK) .

Notes. Heller (1914) based the original description on an unknown number of specimens; he did not designate a holotype. Six specimens fitting his description were found at SMTD. The original description cites the localities Gn. Bratan, Lake Bratan , and Buleleng. A lectotype is designated to ensure stability of nomenclature .

Figures

FIGURE 38. Temnogastrus humeralis (Heller). Piezonotus humeralis Heller, lectotype: (a) Habitus (b) Penis (c) Labels.