Orthomeria Kirby, 1904

Hennemann, Frank H., 2021, Stick insects of Sulawesi, Peleng and the Sula Islands, Indonesia- a review including checklists of species and descriptions of new taxa (Insecta: Phasmatodea), Zootaxa 5073 (1), pp. 1-189 : 13

Genus Orthomeria Kirby, 1904

( Figs. 5–8 )

Type-species: Phasma (Ascephasma) forstenii Haan, 1842: 114 , by original designation.

Comments: A revision of this genus was presented by Bragg (2001: 305) and some of the Bornean species were illustrated by Seow-Choen (2016 & 2017). Examination of extensive material of the genus, particularly from throughout the islands of the Philippine but also Wallacea in the authors collection, shows the genus is still in need of a detailed revision. In particular, the current synonymy of O. pandora ( Westwood, 1859) and O. catadromus ( Westwood, 1859) deserves clarification. The first species was originally described upon three ♂♂ originating from the Philippines and the island of Seram in southern Wallacea, and the latter from three females without confirmed locality (see comments by Vallotto et al., 2016: 52 and Seow-Choen, 2018: 553).

The validity of Coloratobistus Zompro, 2004 (Type-species: C. dilawitimpakpak Zompro, 2004: 83 ), a genus described from the Philippine island of Mindanao, is very questionable and deserves evaluation. The very brief and insufficient generic diagnostic given by Zompro (2004: 82) provides no characters that would allow distinction from Orthomeria . Several ♂♂ at hand from the author’s collection are without any doubt congeneric with Orthomeria .

Distribution: Philippines, Wallacea, Borneo and Palawan.

Figures

FIGURE 5. Orthomeria forstenii (Haan, 1842): A. ♀ (orange colour morp), dorsal view [coll. FH, No. 0725-2]; B. ♀ (green colour morp), dorsal view [coll. FH, No. 0725-1]; C. ♀ (orange colour morp), dorso-lateral view [coll. FH, No. 0725-6]; D. ♀ (green colour morp), dorso-lateral view [coll. FH, No. 0725-12]; E. ♂ in dorsal view [coll. FH, No. 0725-15]; F. ♀, terminal abdominal segments in lateral view [coll. FH, No. 0725-6]; G. ♀, terminal abdominal segments in dorsal view [coll. FH, No. 0725-1]; H. ♂, terminal abdominal segments in lateral view [coll. FH, No. 0725-17]; J. ♂, terminal abdominal segments in ventral view [coll. FH, No. 0725-15]; K. ♂, dorsal view of head, pro- and mesonotum [coll. FH, No. 0725-15].

FIGURE 6. Orthomeria limogesi n. sp. ♀♀, paratypes: A. ♀ (PT) from Tinangkung Utara District, dorsal view [coll. FH, No. 0734-1]; B. ♀ (PT) from Tinangkung Utara District, terminal abdominal segments in lateral view [IMQC]; C. ♀ (PT) from Tinangkung Utara District, subgenital plate in ventral view [IMQC]; D. ♀ (PT) from Tinangkung Utara District, anal segment (= tergum X) in dorsal view [IMQC]; E. ♀ (PT) from Tinangkung Utara District, left ala in dorsal view [IMQC]; F. ♀ (PT) from Tinangkung Utara District, head, pro- and mesothorax in lateral view [IMQC]; G. ♀ (PT) from Tinangkung Utara District, head, pro- and mesothorax in dorsal view [IMQC]. (Figures B–G © René Limoges, IMQC)

FIGURE 7. Orthomeria limogesi n. sp. ♂, holotype [IMQC]: A. Habitus in dorsal view; B. Left ala in dorsal view; C. Right protarsus in dorsal view; D. Head, pro- and mesothorax in lateral view; E. Head, pro- and mesothorax in dorsal view; F. Terminal abdominal segments in lateral view. (© René Limoges, IMQC)

FIGURE 8. Orthomeria limogesi n. sp.: A. Life ♂ on the host plant (Macaranga sp., Euphorbiaceae) at the type-locality near Luksagu village, Tinangkung Utara District, Peleng (©Adhi Brata); B. Life ♀ on the host plant (Macaranga sp., Euphorbiaceae) at the type-locality near Luksagu village, Tinangkung Utara District, Peleng (© Adhi Brata); C. ♀ (PT) from Tatendeng-Eben, Buko District, Peleng [coll. FH, No. 0734-27]; D. ♂ (PT) from Tatendeng-Eben, Buko District, Peleng [coll. FH, No. 0734- 30].