Waynokiops pentacanthus, Kluge, 2022

Kluge, Nikita, 2022, Two new species of Waynokiops Hill et al. 2010 (Ephemeroptera: Baetidae) from the Oriental Region, Zootaxa 5182 (1), pp. 41-63 : 44

Waynokiops pentacanthus sp.n.

( Figs 1–61 )

Etymology. From. πεντ- (Gr.)—five-, and ακανθα (Gr.)—thorn; allusion to five especially long protrusions of equal shape on abdominal terga II–VII of larva ( Fig. 10 ).

Material examined. Holotype: L-S-I ♂ {specimen [XIII](2) 2015}, THAILAND, prov. Mae-Hong-Son, Pai , river Pai upstream Tan Jet Ton village, 9.II.2015, coll. N. Kluge & L. Sheyko. Paratypes: the same locality and collectors, 5–14.II.2015: 2 L-S-I ♂ , 1 L-S/I ♂, 3 L-S-I ♀, 16 larvae. Additional material reported by D. Palatov: INDIA, state Uttarakhand, Rudraprayag, Mandakini river 2 km from mouth, 30°18′8.83″N, 78°58′43.89″E, h= 700 m, 5.II.2011, coll. D. Palatov: 1 larva .

Figures

FIGURES 1–10. Waynokiops pentacanthus sp. n., larvae. 1–2, female larvae of last instar; 3–8, median part of abdominal terga II, VI, VII, VIII, IX and X; 9, median part of sternum VII; 10, thorax and abdomen of young larva.

FIGURES 11–20. Waynokiops pentacanthus sp. n., larval exuviae (11–18 with same magnification). 11, abdomen; 12–14, half of pronotum and mesonotum (arrows show small proruberances); 15, head; 16–18, fore, middle and hind legs; 19, fragment of cercus (dorsal view); 20, paraproct (11, 14, 16–19, holotype).

FIGURES 21–27. Waynokiops pentacanthus sp. n., larvae. 21–22, left and right mandibles; 23, maxilla; 24, labium (focus on ventral side); 25, hypopharynx with superlinguae; 26, labrum (focus on dorsal side); 27, the same, middle of anterior margin (focus on ventral side).

FIGURES 28–34. Waynokiops pentacanthus sp. n., larvae. 28, abdomen without tergalii II–V; 29–32, tergalii II–V; 33–34, apices of right and left mandibles.

FIGURES 35–38. Waynokiops pentacanthus sp. n., exuviae of larval fore legs. 35–36, two fragments of tibia, tarsus and claw, ventral view; 37, femur; 38, apex of femur and base of tibia. Abbreviation: pts, patella-tibial suture crossing ventral side of tibia.

FIGURES 39–42. Waynokiops pentacanthus sp. n., patella-tibial suture, anterior view. 39–40, fore and middle legs of larva; 41–42, fore and middle legs of female subimago.

FIGURES 43–52. Waynokiops pentacanthus sp. n. 43–45, male imagines; 46, fore leg of male imago; 47, fore leg of female imago; 48, its subimaginal exuviae; 49, middle leg of female imago; 50, female imago; 51, subimaginal exuviae of meso- and metapleuron; 52, subimaginal exuviae of mesonotum (44–46, holotype).

FIGURES 53–55. Waynokiops pentacanthus sp. n. 53, genitalia of male imago, focus on dorsal side; 54, their subimaginal exuviae; 55, genitalia of male imago, focus on ventral side (holotype).

FIGURES 56–59. Waynokiops pentacanthus sp. n. 56, precursors of subimaginal gonostyli starting to develop under larval cuticle; 57, subimaginal exuviae of gonostylus; 58, genitalia of male imago; 59, wing. Abbreviations: g1–g3, segments of gonostylus; gd, gonoduct; m.IX-X, areas of anterior attachment of paired intersegmental muscles going to paraprocts base; m.s, median sterno-styligeral muscle.

FIGURES 60–63. Waynokiops spp., eggs. 60–61, W. pentacanthus sp. n.; 62–63, W. palifer sp. n.