Kynotus ankisiranus, Csuzdi & Razafindrakoto & Hong, 2017

Csuzdi, Csaba, Razafindrakoto, Malalatiana & Hong, Yong, 2017, Three new species of Kynotus from the Central Highlands of Madagascar (Clitellata, Megadrili), European Journal of Taxonomy 336, pp. 1-14 : 3-6

Kynotus ankisiranus sp. nov.

urn:lsid:zoobank.org:act:DDAFA680-A9E8-4A8B-AD38-9FB52F7378F2

Figs 2 , 5

Diagnosis

Length 70–90 mm, diameter 3 mm. Colour grey with slight red pigmentation at the head on dorsum. Segments 1–3 simple, 4–10 biannulate. Setae appear from segment 2 and clearly visible, male pores ventral on 16. Clitellum circular on 18–27, ½28. Three rows of spermathecae of elongated oval-shape in 13/14, 14/15, 15/16. No septa notably thickened. Genital setal glands in 14, 15.

Etymology

The species epithet refers to the type locality, Mt Ankisira National Park.

Material examined

Holotype

MADAGASCAR: clitellate, Ambalavao District , Sendreisoa , Namoly, Mt Ankisira National Park, Aristida grassland at the edge of primary forest, 22°06′45.8″ S, 46°56′33.8″ E, 1500 m a.s.l., 24 Feb. 2015, Y. Hong and M. Razafindrakoto leg. ( HNHM / AF5658 ).

Paratypes

MADAGASCAR: 2 clitellate, 3 aclitellate adults ( HNHM /AF5659), 2 aclitellate ( CHBNU MD- 06- AL5), locality and date same as for holotype.

Description

Holotype 50 mm in length, diameter after clitellum 3 mm, segment number 98, tail missing. Paratypes 72–86 mm in length, 3 mm in diameter, segment number 170–179. Colour grey with red pigmentation at head on dorsum. Head zygolobous, segments 1–3 simple, 4–10 biannulate. Dorsal pores lacking. Setae small, ab and cd clearly observed from segment 2. Setal arrangement (holotype) after clitellum aa:ab:bc:cd:dd = 15:1.25:9.5:1:18, dd = 0.32 U ( Fig. 2A ). Clitellum annular on segments 18–27, ½ 28.

Male pores ventral on 16. Female pores not seen. Spermathecal pores in 13/14 (2), 14/15 (2), 15/16 (2) from bc to cd. Genital setal pores in variable position between ab and cd on 14, 15.

Internal characters

Large muscular gizzard in 5. Septa all membranous. Calciferous glands, lamellae and typhlosolis lacking. Dorsal blood vessel simple throughout, last pair of hearts in 11. Excretory system holoic, vesiculate. Two pairs of testes and sperm funnels in 10, 11 enclosed in large peri-oesophageal testis sacs. Seminal vesicles lacking. Ovaries in 13. A pair of large, oval copulatory chambers occupying the ventral space of segments 16–17. Each copulatory chamber bearing an irregular prostate-like gland (pseudoprostate) reaching segment 21. Spermathecae elongated, oval-shaped, with short duct attached at 13/14(2), 14/15(2), 15/16(2) in variable position arranged from between bc to cd ( Fig. 2B ). Two pairs of genital setal glands present in segments 14, 15 above ab and around cd respectively. The genital setae are slightly curved, with spoon-shaped apex, length 1.6–1.7 mm, diameter at the middle 0.05 mm, ornamentation dense serrations ( Fig. 2 C–D).

Remarks

The new species belongs to the alaotranus group ( Table 2 ) characterized by biannulate segments between 4–10. With its smaller size and red pigmentation on the dorsum, K. ankisiranus sp. nov. most closely resembles K. minutus Csuzdi, Razafindrakoto & Blanchart, 2012 , but differs from it by the longer clitellum (18–26 vs 18–27, ½ 28) and the number of genital setal glands (single pair in 15 vs two pairs in 14, 15). K. amkisiranus sp. nov. is clearly different from all the examined alaotranus group’s species by its COI barcode as well ( Table 3 , Fig. 5 ).

Figures

Fig. 2.Kynotus ankisiranussp. nov.A. Setalarrangement, a,b,c, drepresenting setallines.B.Spermathecae, schematic representation. C. Genital seta. D. Tip of the genital seta. Scale bars = 0.1 mm.

Fig. 5. Bayesian inference tree of some species of Kynotus Michaelsen, 1891 using COI sequences. Numbers above branches indicate Bayesian posterior probabilities, below branches ML bootstrap supports. Values lower than 80% are not shown.