Ectinogramma isosceloides Thomson, 1864

Huang, Gui-Qiang, Li, Yao-Lan, Lu, Hai-Jun & Liu, Dong-Shuo, 2025, Review of the genus Ectinogramma Thomson, 1864 (Coleoptera, Cerambycidae, Lamiinae, Agapanthiini), ZooKeys 1244, pp. 239-248 : 239-248

Ectinogramma isosceloides Thomson, 1864

Figs 1 A – H , 2 A – D

Ectinogramma Isosceloïdes Thomson, 1864: 96 (type locality: “ Malasia ”).

Ectinogramma isosceloides Gemminger and Harold 1873: 3131 (catalogue); Aurivillius 1923: 359 (catalogue); Breuning 1961: 202 (catalogue).

Ectinogramma collare Pascoe, 1866: 266 (type locality: “ Penang, Presqu’île de Malacca, Malasia ”), pl. XXVIII, fig. 10; Gemminger and Harold 1873: 3131 (catalogue); Aurivillius 1923: 359 (catalogue).

Spinogramma ruficollis Breuning, 1959: 8 (type species: “ Kuala Lumpur, péninsule de Malacce, Malaysia ”); Breuning 1961: 202 (catalogue); Cools 1993: 44. syn. nov.

Note.

Comparative analyses of the holotype of Ectinogramma isosceloides Thomson (Fig. 1 A – C ) and Spinogramma ruficollis Breuning (Fig. 1 E – G ) reveal that the latter species is synonymous with E. isosceloides .

Body length and humeral width of elytra.

Male: 23–25 mm, 2.8–5 mm (five individuals). Female: 20.5 mm – 27.5 mm, 2.8–5 mm (eleven individuals).

Type material examined.

Ectinogramma isosceloides Thomson, 1864 : holotype, ♀ ( MNHN), Th. TYPE (printed with black ink on a rectangular white label, with a transversal black line between “ Th. ” and “ TYPE ”, with a black inside border) / Ex Musæo JAMES THOMSON (printed with black ink on a rectangular white label, with a black inside border) / MUSéUM PARIS 1952 coll. R. OBERTHÜR (printed with black ink on a rectangular white label) / Isosceloïdes Thoms. Type Malas (handwritten with black ink on a rectangular yellow label, the label with a wide yellow outside border and a narrow yellow inside border, with three transversal yellow lines in the inside border) / HOLOTYPE (printed with black ink on a rectangular red label) / HOLOTYPE Ectinogramma isosceloides Thomson, 1864 (printed with black ink on a rectangular white label) / MNHN, Paris EC 30552 plus a QR (quick response) code (printed with black ink on a rectangular white label); examined from four photographs (Fig. 1 A – D ).

Spinogramma ruficollis Breuning, 1959 : holotype, ♀ ( RBINS), Coll. I. R. Sc. N. B. Malaisie: (printed with black ink on a rectangular yellow label, with a transversal black line between “ Coll. I. R. Sc. N. B. ” and “ Malaisie: ”) / Malacce Kuala-Lumpur Stankovič (handwritten with black ink on a rectangular white label) / Spinogramma ruficollis mihi Typ Breuning det. (“ Spinogramma ruficollis mihi Typ ” handwritten and “ Breuning det. ” printed with black ink on a rectangular white label) / Cf.: Bull. Inst. r. Sci. nat. Belg. 1959, 35, 6: 8 (handwritten with black ink on a rectangular white label) / Holotype (Printed with black ink on a rectangular red label with a black inside border); examined from four photographs (Fig. 1 E – H ).

Additional material examined.

Malaysia: • 1 ♂ ( CWW), Mt. Trus-Madi , Sabah, Borneo, 15. IV. 2005, leg. local collector, examined from one photograph (Fig. 2 A ) ; • 1 ♂ ( CWW), Mt. Trus-Madi , Sabah, Borneo, 14. IV. 2007, Cope collection, examined from one photograph ; • 1 ♀ ( LPSNU), Mt. Trus-Madi , Sabah, Borneo, 27. VI. 2022, leg. Dong-Shuo Liu (Fig. 2 B ) ; • 1 ♀ ( CWW), Crocker Range , Sabah, Borneo, 19. V. 2009, Cope collection, examined from one photograph ; • 1 ♀ ( CDJH), Mt. Trus-Madi , Sabah, Borneo, alt. 2000 m, III / V. 1998, leg. local collector, examined from one photograph ; • 1 ♀ ( CDJH), Crocker Range , Sabah, Borneo, IV. 1998, leg. local collector, examined from one photograph ; • 1 ♀ ( CDJH), Crocker Range , Sabah, Borneo, 10. III. 1999, leg. local collector, examined from one photograph ; • 1 ♂ ( CDJH), Crocker Range , Sabah, Borneo, alt. 1000 m, 18. III. 2011, leg. local collector, examined from one photograph . Indonesia: • 1 ♂ ( CSG), Mt. Bawang , Kalimantan, Borneo, alt. 245 m, V. 2019, leg. local collector, examined from one photograph (Fig. 2 C ) ; • 1 ♀ ( CST), Madi vill. env. , Mt. Bawang, Singkawang region, SW Kalimantan, Kalimantan Barat pr., alt. 1000–1500 m, VI. 2018, leg. local collector, examined from one photograph (Fig. 2 D ) ; • 1 ♀ ( CST) Mt. Bawang , W. Kalimantan, III. 2016, leg. local collector ; • 1 ♂ 1 ♀ ( CDJH), Mt. Bawang , West Kalimantan, VI. 2016, leg. local collector, examined from two photographs ; • 1 ♀ ( CDJH), Mt. Bawang , West Kalimantan, IV. 2016, leg. local collector, examined from a single photograph .

Distribution.

Malaysia (Kuala Lumpur, Penang, Sabah), Indonesia (Kalimantan).

Remarks.

After examining some males and females, we found that the male (Fig. 2 A, C ) is very similar to the female in the body shape, color, pubescence, but they can be distinguished from females by the pedicel with an apical spinous projection, which is longer than the pedicle (Fig. 2 A, C ).

The genders of the holotype of Ectinogramma isosceloides (Fig. 1 A – C ), Ectinogramma collare (pl. XXVIII, fig. 10 in Pascoe 1866) and Spinogramma ruficollis (i. e., E. isosceloides ; Fig. 1 E – G ) were not provided in the original literature; however, based on our examination, the three holotypes are females because the pedicel lacks the spiniform projection found in males.

Figures

Figure 1. A – D. Ectinogramma isosceloides, holotype, female; A. Dorsal habitus; B. Lateral habitus; C. Ventral habitus; D. Labels (photographs A – D taken by Christophe Rivier); E – H. Spinogramma ruficollis, holotype, female; E. Dorsal habitus; F. Lateral habitus; G. Frontal habitus; H. Labels (photographs E – H taken by Berdien Daniels).

Figure 2. A – D. Ectinogramma isosceloides, dorsal habitus; A. Male from Sabah, Borneo, Malaysia (photograph taken by Andre Skale); B. Female from Sabah, Borneo, Malaysia (photograph taken by Yao-Lan Li); C. Male from Kalimantan, Indonesia (photograph taken by Andre Skale); D. Female from Kalimantan, Indonesia (photograph taken by Sergi Trócoli).