Tanypus-Procladius group

1-1 Procladius group

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Dorsomental teeth with several teeth. Body segment with fringe of swim seta.

Tanypus 　　Procladius　　Djalmabatista 　　 Psectrotanypus 　　Fittkawimyia 　　Apsectrotanypus 　　Macropelopia 　　　Brundiniella

　　　　　　　　　　　　　※　５ teeth and 1 small tooth

Tanypus

Tanypus has 2 groups to show next. �@　Tanypus chinensis type: Ligula thin and long, paraligula 30 or more long thin whip shape.( .see below figure left))
�A　Tanypus formosanus type : Ligura wide and short, Paraligula bifid or divided 7〜8.(see below figure center)　
Cephalic index about 1.0   Anal tubules 3 pairs. Anal setae 14〜20.  Height of procercus about 4 times of diameter. Body length 8〜10mm. Fringe of swim-seta on both side on body segments.
The former inhabit in eutrophic lakes ( Lake kasumigaura, Innbanuma etc.) and the latter inhabit in polluted river ( River Ashida, River Yamato etc.)

Ligula with 5 teeth, Paraligula 30 or more long dentations of comb.(T. chinensis , T.punctipennis)	Paraligula : outer margin with row of 6 〜8 elongate points.or bifid.(T.formosanus. T kraatzi)	Antenna 4 segments. Basal segment  big.         Antennal  ratio 5.3〜5.8
Pecten hypopharyngis see like a thread.	dorsometal teeth 7 pairs. Number and form varies among species. 　M appendage hard to observe .	Mandible ovoid,  apical tooth small, 2 inner teeth very small.
fringe of swim-setae	Anal tubules 3 pairs
		The biggest differences of two types belong to  Tanypus are formes of teeth of ligula , paraligura   and pectenhypopharyngis.    In T. punctipennis type, dorsomental teeth   arrenged in concave slightly : in contrast in  T.kraatz type, arrenged in convex.下 ・Mandible ovoid, part of apical tooth short. Both basal tooth and inner teeth small. ・Height of procercus 3〜4　times of diameter ・Anal setae 10〜20. ・Anal tubules 3 pairs .

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Procladius

Body length 5〜7mm. Fringe of swim-seta on both side on body segments. They inhabit on the sand-pebble bottom of wetlands. They distributed over the country.

Row of 5 teeth weakly concave.Paraligula few or no points on inner side, out side with several points .	Dorsomental teeth 6〜9. 　M appendage ; row of granulation irregula.	fringe of swim-setae
	１：Antanna ; 4 segments , basal segment big, antennal    ratio 4.5〜5.5 ２：Ligula; 5 teeth arrenged deeply concave. Paraligula with several teeth on outside, ２〜３ teeth on inside.  Pecten hypopharyngis with 10 or more teeth. ３：Mandible ; basal tooth large, inner teeth small,   mandible slightly curve at the tip. ４：labrum ５：maxilla ６：Dorsomentum ７：Procercus: with 20 or more setae, height 2〜4 times of diameter. ８：Anal tubules short 2 pairs。 ９：Claws of posterior parapod １０：Claws of anterior parapod

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Djalmabatista

Small size ,body length about ３mm.  body light brown, semitransparent with a spotted design. Fringe of swim-aetae on boyh body sides.
It caught in small river flowing into Nakura dam in Isigaki   Isand.

Row of 5 teeth weakly concave , center tooth particularily small. Paraligula 1 or 2 points on inner side, out side with 3 points . Pecten hypopharyngis with 10 teeth. (There is the kind having 4 teeth, too) Dorsomental tteeth large 6 and small 1 . M appendage triangle , row of granulation irregular. Apex of mandible blackish brown, moderately curved. Basal tooth and 1 inner tooth large. Antenna 4 segments, antennal ratio 3.5. Antannal length 1/3 times of head .Blade beyond apex of antenna , 2 times of 2nd〜4th segments. １：Antenna ２：Ligula : 5 teeth or 4 teeth  The width and length of basal part about the same . ３：Mandible ４：b-seta of maxilla palp with 2 segments ５：Dorsomentum ６：Claws of posterior parapod. ８：Claws of anterior parapod. ９：Procercus; with 14 anal setae , height 3 times of diameter.

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Psectrotanypus

Body length ９〜１０mm. Living body light orange. cephalic index 0.85〜0.90 . This larva caught in Lake Biwa, few population.  They inhabit eutrophicated river , too.

With 4 teeth, equal in size, tooth row straight. Width   of ligula almost equal from upper to lower.  Paraligula    more or less divided into 8 branches.	Slender, strikingly curved inwards.  Basal tooth large, with broad , apically directed tip.  Several small ,saw-like teeth present on inner margin of mandible, proximal to basal tooth.	Anal setae 24. long seta , 2.5 times of procercus. height 3 times of diameter.
	１：Antenna : 5 segments, antenal ratio 6.5. 3rd〜５ｔｈ segments short. ２：Ligula, Pecten hypopharyngis with 22〜    23teeth. ３：Mandible: several serrated teeth below basal tooth. ４：Dorsomental teth 7 pairs, row of granulation weakly. ５：Maxilla palp ６：Fringe of swim-seta ７：Claws of anterior parapod ８：Claws of posterior parapod ９：Anal tubules １０：Height of procercus 3 times of     diameter . anal setae 24.

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Fittkauimyia

Body length ５mm. Body colore light brown , Fringe of swim-seate on both side of each segment. Eye spot 1 pair .
I caught only one larva at rabit flow in River Biteki(Lake Shikotu, Hokkaido)

Ligula with 5 teeth, inner teeth curved slightly inwards, yellowish brown. Basal part of ligula narrow. Paraligula divided into 3. Pecten hypopharyngis with 20 or more teeth, 6〜7 teeth from apical arranged 1 row, afterward 2 rows .	Mandible curved slightly. Basal tooth small, Proximal of apical tooth , on inner side in mddle part of mandible, ,a large number of strong serrated teeth.	Antenna with 4 segments. Antennal ratio 4.5〜4.7. Ring organ 2/3 of basal segment.
	１：Antenna :Antennal ratio 4.5〜 4.7 ２：Ligula ３：Mandible ４：Dorsomentum ; M-appendage hemicycle, row 　 of granulation not fine. 　　Mentum subdivided into median section and        lateral section . 　　Median section; midle tooth and 3 lateral teeth    on each side.     Lateral section ; A large tooth on inner side    and a large , apically produced and inwardly     curved ,pointed tooth laterally. ５：Maxilla: b-seta 2 segments ６：Fringe of swim-setae. ７：Claws of posterior parapod ８：Claws of anterior parapod ９：Procercus: height 3.5 times more than     diameter. Inside of procercues brown. Anal    setae 8. １０：Anal tubules

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Apsectrotanypus

Body length ６〜７mm. Living body color light orange. Both sides of body segment with fringe of swim-setae. Eye spot 1 pair , small.
They inhabit among the deposited leaves in river, destributed over the country.

With 5 teeth, tooth row deeply concave. Outer tooth 2 times as long as middle tooth.  Paraligula bifid,. Pecten hypopharyngis with 10 or more teeth.	Dorsomental teeth with 5. Row of granulation not fine.
	１：Antenna : 5 segments. antennal ratio　6〜7.5. .      Blade :  beyond apex of antenna. ２：Ligula ３：Mandible : moderately curved , gradually narrowed      towards apex. Basal tooth small but fine, inner teeth   absent. ４：Dorsomentum ５：Anal tubules conical, 2pairs ６：Claws of anterior parapod ７：Claws of posterior parapod ８：Procercus ; height 3〜4 times of diameter. anal     setae 10〜14 ９：Maxilla : ring organ about middle of basal segment.

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Macropelopia

Large larva , about ９〜１０mm　, Body redish orange , head redish brown.  Eye spot 1 pair. With fringe of swim-satae.  Antenna 4 segments, 1/3〜1/4 times of head length. Antannal ratio 7〜9. Height of procercus 3〜4 times of diameter, with 13〜15 anal setae. Anal tubules 2 pairs, conical.
the larvae inhabit among fallen leaves in still water.
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Living body redish orange i..Head redish brown.	Ligula : 5 teeth arranged concave. deeply , outer 2 teeth particularly large. Inner teeth curved outwards slightly. Paraligula with 1 or 2 small teeth on inside. Pecten hypopharyngis with 20 or more small teeth in a row.
Mandible : Slender, moderately curved . Basal tooth not large but clear, 1 inner tooth small..	Dorsometum with 5〜8 teeth .M appendage triangle , row of granulation irregular.

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Brundiniella 　　　　　　

Body length 4.5〜５mm . Living body light yellowish green in color.  7〜8　pairs fringe of swim-setae on each abdominal segments. Eye spot 1 pair.
b-seta of maxilla palp with 2 segments.
This larva caught in Takahashi river.
(Details unclear in this larva.)

Ligula : outside 2 teeth large, other 3 teeth about equal in size, inner teeth not curved outwards.  Paraligula bifid. Pecten hypopharyngis with 10 or more teeth . Dorsomental teeth 6, M appendage long triangle, row of granulation rough, irregular.	Antenna 4 segments. length 1.6 as long as mandible, antenal ratio 5.5〜6.0. Blade not beyond the apex of antenna. Mandible :basal tooth small but clear, inner teeth absent., moderately curved towards apex.
Anal tubyles both 2 pair short, sharp conical.	Height of procercus 6 as long as diemeter . Anal setae 10, length 2〜３　times of its height.

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Tanypodinae　group 一覧