Indocnemis orang, Foerster in Laidlaw & Foerster, 1907

Keetapithchayakul, Tosaphol Saetung, Makbun, Noppadon, Phan, Quoc Toan, Danaisawadi, Patchara & Wongkamhaeng, Koraon, 2022, Description of the larva of Indocnemis orang (Förster in Laidlaw, 1907) (Odonata Platycnemididae: Calicnemiinae) from Thailand, with larval key to the known genera of the family Platycnemididae in Asia, Zootaxa 5134 (4), pp. 504-520 : 506

Indocnemis orang (Förster in Laidlaw, 1907)

( Figures 3– 10 , 12N , 13H )

Material examined. 1 ♀ exuvia (reared from larva), 1 ♂, 2 ♀♀ (last stadium larvae), Thailand, Nan Province, Sapun waterfall (19.190472 N, 101.199500 E, altitude 726 m a.s.l.), 25.xii.2020, T. S. Keetapithchayakul leg. ; 1 ♂, 1 ♀ exuvia (reared from larvae), 1 ♂, 1 ♀ (last stadium larvae), Thailand, Surat Thani Province, Ratchaprapha Dam (9.09133 N, 98.64836 E, altitude 89 m. a.s.l.), 23.ii.2021, K. Wongkamheang and P. Danaisawadi leg. ; 1♀ (last stadium larvae), Thailand, Chiang Mai Province, Royal Garden Siribhume (18.546996 N, 98.515119 E, altitude 1,325 m a.s.l.), 23.x.2021, T. S. Keetapithchayakul leg.

Figures

FIGURE 3. Larva of Indocnemis orang photographed in an aquarium.

FIGURE 4. Head of Indocnemis orang. (A), dorsal view; (B), frontal view; (C), ventral view; (D), lateral view. Scale bars represent 1 mm. Arrows indicate three ocelli.

FIGURE 5. Mouthparts of Indocnemis orang larva. (A), labium dorsal view; (B), enlarge of ligula; (C), enlarge of latero-distal end of prementum; (D), labium, lateral view; (E), right labial palp, ventrolateral view; (F), right labial palp, dorsolateral view. All scale bars represent 0.5 mm. Arrows indicate protuberance.

FIGURE 6. Mouthparts of Indocnemis orang larva. (A), left mandible, ventral view; (B), left mandible, ventrointernal view; (C), left mandible, dorsal view; (D), left mandible, ectal view; (E), right mandible, dorsal view; (F), right mandible, internal view; (G), right mandible, ventral view; (H), right mandible, ectal view; dorsal view; (I), maxilla, dorsal view; (J), maxilla, internal view; (K), maxilla, lateral view; (L), maxilla, ventral view. All scale bars represent 0.5 mm.

FIGURE 7. Thoraxes and legs of Indocnemis orang larva. (A), thorax, dorsal view; (B), thorax, lateral view; (C), ventral view; (D), foreleg; (E), midleg; (F), hindleg; (G), tibial comb. Scale bars for G represents 0.5 mm; A, B, C represent 1 mm; D, E, F represent 2 mm.

FIGURE 8. Gonapophysis of Indocnemis orang larva. (A), male gonapophysis, ventral view; (B), male gonapophysis, lateral view; (C), female gonapophysis, ventral view; (D), female gonapophysis, lateral view. All scale bars represent 1 mm.

FIGURE 9. S9–10 of Indocnemis orang larva, removed of caudal gills. (A–C), male; (D–F), female; (A, D), Posterior view; (B–E), dorsoposterior view; (C–F), lateral view. All scale bars represent 1 mm.

FIGURE 10. Caudal gills of Indocnemis orang larva. (A), median gill; (B), lateral gill; (C), enlarge of serrated teeth on dorsal of median gill; (D), enlarge of serrated teeth on ventral of median gill; (E), enlarge of serrated teeth on ventral of lateral gill; (D), enlarge of serrated teeth on dorsal of lateral gill. All scale bars represent 1 mm.

FIGURE 12. Schematic contour of ligula (median lobe of prementum) of Asian representative Platycnemididae larvae: (A), poorly produced ligula; (B), moderately produced ligula; (C), strongly produced ligula; (D), Nososticta moluccensis redrawn from Lieftinck (1953); (E), Prodasineura autumnalis redrawn from Lieftinck (1953); (F), Copera chantaburii redrawn from Saetung et al. (2020); (G), Pseudocopera ciliata redrawn from Saetung et al. (2020); (H), Caconeura gomphoides redrawn from Fraser (1943); (I), Platycnemis echigoana redrawn from Eda (1965); (J), Onychargia atrocyana redrawn from Orr & Dow (2015b); (K), Calicnemia gulinensis redrawn from Chen & Yu (2020); (L), Coeliccia flavostriata redrawn from Orr & Dow (2016); (M), Disparoneura apicalis redrawn from Fraser (1943); (N), Indocnemis orang, this study.

FIGURE 13. Drawing of median gill of larva of representatives of Asian Platycnemididae: (A), Calicnemia gulinensis,redrawn from Chen & Yu (2020); (B), Disparoneura apicalis, dorsal view, redrawn from Fraser (1943); (C), Nososticta moluccensis, redrawn from Lieftinck (1953); (D), Coeliccia flavostriata, redrawn from Orr & Dow (2016); (E), Coeliccia campioni, redrawn from Orr & Dow (2016); (F), Caconeura gomphoides, redrawn from Fraser (1943); (G), Onychargia atrocyana, redrawn from Orr & Dow (2015b); (H), Indocnemis orang, this study; (I), Copera chantaburii, redrawn from Saetung et al. (2020); (J), Coeliccia cyanomelas, redrawn from Xu (2013); (K), Prodasineura autumnalis, redrawn from Lieftinck (1953); (L), Platycnemis echigoana redrawn from Ishida (1996); (M), Pseudocopera ciliata redrawn from Saetung et al. (2020). Arrows indicate nodus of caudal gills.