２−２　Harnischia group　　
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　return to ２　Cironominae

　Harnischia group is distinguished from Chironomini by the following points.

　　Harnischia 　group

Chernovskiia 　　　 Cladopelma　　　　Cryptochironomus 　　　Cyphomella　　　 Demicryptochironomus　　　　　　　Hanochironomus　　　Harnischia 　　　Kloosia　　　　 Microchironomus 　　　　Paracladopelma　　　　　Parachironomus 　　　Robackia　　　　 　Saetheria 　　
　　 　　　

Harnischia　group is divided into four groups by form of mentum .

Robackia Larva body length ８〜１０ｍｍ, with s.even anal setae . They were found in Kiso-river and Kumano-river.
Head thin, Head ratio. 0.6． Eye spots 2 pairs,　　　 slightly away.	Anal tubules :both 2 pairs long and slender ,　　　　　 half of posterior parapod. . 　　 Posterior parapods elongate.	Mentum with 12 teeth , almost the same size. Ventromental plate with irregular 7〜8 scales , 3rd scale largest.
Antenna 0.7 times of head length, 7 segments, 6th and 7th segment very short. The blade at the top of 2nd segment reaches to the 5th segment.　Two thin and short projections at top of the 3rd the segment , but Lauterborn's organ absent. 　　A projection with 2 segments at the top of the 5th segment is 2 times length of the 5th, mached to 6ｔｈ segment ,	Mandible: with long apical tooth and 3 inner teeth. 　　Seta subdentalis long, beyond the 1st inner tooth.	Ｓ�Tshort, Ｓ�Ulong needle shape. 　Pecten epipharyngis divided into two. Premandible with 4 teeth and 　one projection on back.
	1: antenna 2: mentum 3: mandible 4:labro-epiphryngeal region 5: maxillaly palp 6: claws of anterior parapod 7: claws of posterior parapod 8:procercus and anal setae 9: head 10: anal tubules and posterior parapod

return to top of this page

Chernovskiia グループ

Chernovskiia These larvae were found in sandy riverbed of 2m depth in River Kiso with following Robackia.
Head very small, Maxilla palup long, looks antenna. Claws of anterior parapod strong and thick.	Anal tubules elongate back-ward, 3/4 times of 　　　　　posterior parapod.．Posterior parapods thin ,elongate 　　back-ward. with 10 small claws	Median tooth and 4 pairs lateral teeth arranged by 　　shallow V-shape　. Teeth are pale yellow all. 　Ventromental plate fun shape.
Mandible with apical tooth only, inner tooth 　　　　　lacking.　Seta subdentalis sharp.	Ｓ�T: short needle shape. Ｓ�U: very long and thick. 　Pecten epipharyngis 4 small lobes. Premandible divided into 3 .	Antenna 8 segments. the end in segments are 　　　indistinct. Basal segment with a seta in center. 　2 Lauterborn organs organ situate on apex of 　　　segment 4. 　A long oval projection on apex of segment 5.
	Body length ７〜８ｍｍ. Head 1/38〜１/40 of body. Abdomen and chest thick. segment 1 and 11 thin.. The whole body is spindle shaped. Anal setae 8, Proceucus flat.

return to top of this page

Harnischia Body lenth 6〜7mm. Body pale orange , head pale yellow. Anal setae 8. These larvae found in Lake Biwa .
Mediantooth with a gap on center and both side. Lateral teeth 6 pairs. 　Ventromental plate fan -shape with clear radial lines .	Ｓ�Tshort and thin, Ｓ�Ustrong and thick. 　Premandible divided into 5〜6 diatally.	Antenna with 5 segments. Blade arising at middle of sebment 2 reaches the point of segment 　4 　Lauterborn organ lacking.
		Apical tooth of mandible sharp, 2 inner teeth 　　　small

return to top of this page

Cryptochironomus 　Body pale orange i. 　Larvae live in various water areas. 4 species found in Japan.
Median tooth pale yellow, wide, lateral teeth 5 pairs, arranged by shallow V-shape . Ventromental plate fan shape, elongate to outside.	Mandible with 2 inner teeth.	Antenna 5 segments, 2 blades( 1 short and 1 long) situated at apex of segment 2. Lauterborn organ lacking.
		8:Anal setae 8. procercus short . 9:Anal tubules 2 pairs, conical.
S�T: thin ,long needle shape. Ｓ�U: strong , long. Pecten epipharyngis triangular with small serrted teeth. Premandible divided into 5〜6 .		。

return to top of this page

Demicryptochironomus Body length 5〜8mm.、pale orange. They live in clear water area relatively.
Maxilla pulp long, looks to be antenna.	Mentum : mediantooth and 7 pairs lateral teeth arrenged in shalow concave. 　 Ventromental plate fan shape, elongate to utside. 　Mandible with sharp apical tooth and 2 inner teeth, dorsal tooth lacking.	Antenna with seven segments, blade at apex of segment 3, small Lauterborn's rgan at apex of segment 5.
Ｓ�Tvery thin and short,　Ｓ�Uvery thick and long. 　Pecten epipharyngis triangular, with 3 teeth. 　 Premandible with 3 large teeth.	Anal tubules 2 pairs., conical. Procercus short, with 6〜８ anal setae

return to top of this page

Kloosia Body length 5〜6mm,　pale orange. Whole body thin and long. Following pictuers are the larvae found in Ishigaki Iland (Okinawa pref. Japan). Other larvae found in Ina-river(Osaka :Japan) and Nabari-river ( Mie pref. Japan) have a mentum with different shape from the former.
Medical tooth sharp, large. with 6 pairs lateral teeth. 　The whole mentum arranged in shallow V- shape. 　Ventromental plate situated both outside of mentum.	Antenne with 6 segments. Blade arising at middle of sebment 2 reaches the point of antenna. 　 Lauterborn organ on apex of segment 3. 　Segment 4 shorter than segment 5.	Mandible with 2 inner teeth. Seta subdentalis 　　　reach 2nd inner tooth
	Ｓ�T, Ｓ�U: thick, long needle like together.　　 　Labral lamella triangular 2 lobes 　Premandible divided into 3.
Kloosia koreana　：　caught in Iahigaki-Iland.		Anal setae 8, Posterior parapod 3 times of anal tubules

return to top of this page

Cyphomella group

Cyphomella Body length 5〜6mm. pale orange . These larvae found in Biei-River (Hokkaido, Japan). They live in algae of surface of stone.
Medical tooth wide., pale yellow. 　Lateral teeth 7 pairs. 　Ventromental plate wide fan shape. radial line unirregular.		Antenna with 5 segments, segment 3〜5 very short. 　2 blades on apex of segment 2, Lauterborn's organ 　　　　lacking.			Ｓ�T: short. Ｓ�Ustrong.: 　Pecten epipharyngis hart shape, divided into 3 　Premandible with 4 teeth. brush present.

Saetheria sp. Body length 5〜6mm. pale yellowish brown . Body redish orange. Anal tubules both 2 pairs long conical. Procercus short, with 7 anal setae
Median tooth is the size of 4 lateral teeth, pale yellow. Lateral teeth 7 pairs. 　Ventromental plate wide fan shape, radial line very clear.	Antenna with 6 segments, segment 　　4〜6 short 　A blade at halfway of segment 2 　　　　beyond tip of antenna. Lauterborn's 　　　organ on apex of seｇment 3 short, 　　with baloon shape projection.	Ｓ�T: short. Ｓ�U: strong, long needle like. 　　Pecten epipharyngis 1 blade, triangular. 　　Premandible with 4 teeth.

return to top of this page

Paracladopelma Body length 5＾6mm. Head pale yellow, body pale orange. 3 species found. in Japan.
Median tooth arc , pale yellow. Lateral teeth 6 pairs; expect 1st.lateral tooth brown, 1 st. paleyellow. Ventromental plate wide fan shape, radial lines about 20 clear.	Ｓ�T: very thin, short needle like. Ｓ�U: long needle 　　like. 　Pecten epipharyngis small triangular. 　Premandible with 4 teeth, brush lacking.	Apical tooth long, sharp. with 2 pointed inner teeth 　Seta subdentalis long needle shape. 　Pecten mandibularis consisting of 2.
Antenna with 5 segments. Blade arising 　　　　downward 2/3 of segment 2 reaches apex of 　　antenna. Segment 3〜5 short. 　Lauterborn's organ lacking.	Eye spot 2 pairs , small. Anal tubules long conical. Procercus short, with 8 anal setae.

return to top of this page

Cladopelma group

Cladopelma Body length 5〜6 mm. pale orange. Head yellowish brown, under side blackish brown. This larva was found in Lake-BIwa only.
Mentum with 15 teeth,. Median tooth with a small gap in center. 1st〜4th lateral teeth the same size, outer 3 teeth arranged mound shape. 　Ventromental plate fan shape, radial line clear.	Ｓ�T. Ｓ�Uthick and long both. 　Pecten epipharungis 3 triangular lobes. 　Premandible distally bifid .	Antenna with 5 segments, Lauterborn organ small.
		2 inner teeth distally flat.

return to top of this page

Microchironomus Body length 5〜6mm, Head yellowish brown, body pale orange . They found in Lake Biwa and River Nagara.
Mentum with 13 teeth, 3 median teeth 　　　　　arranged in mound like. 1st 〜 3 lateral teeth 　the same size. 4th 〜6 lateral teeth arranged 　in mound like. Ventromental plte wide fan 　　　　shape., radial line clear.	2 inner teeth distally flat 　Seta subdentalis spatula like.			S�T, S�Uthick needle like. 　Pecten epipharyngis ｈｅａｒｔ shape , distally 　　serrated 　Premandible divided into 2.
	anal tubules 2 pairs ,spindle shape. 　Procercus : height and diameter the 　same size. , anal setae 8

return to top of this page

Parachironomus Body length 5〜6mm. Head pale brown, body red. 2 species found.
Mentum with 15 teeth, median tooth larger than lateral 　　　　teeth. All of the teeth pale brown and sharp. 　Ventromental plate small fan shape、 　upper edge rough. radial line clear, rough.	Ｓ�T,Ｓ�Uboth thick and long needle like. 　Pecten epipharyngis heart shape, side edge with 　　　several rough serrated 　Premandible divided into 2.	Antenna with 5 segments. Lauterborn rgan small. Blade reach the tip of antenna .　。
	・Eye spot 3. ・Mandible : a large apical tooth and 2 inner teeth. 　Seta subdentalis very sharp. ・Procercus short, anal setae 7.

return to top of this page

Ｓａｅｔｈｅｒｉａ
Ｓａｅｔｈｅｒｉａ　（part) incluede following two types.

Saetheria hirta　type ：Body length about 6mm . Head thin , pale yellowish brown . Body pale yellowish orange .
They live in nomal or fast flows ; sand or pebble river bed,

Mentum with 13 teeth, mediantooth the largest 　of all, lateral teeth 6 pairs. 　Ventromental plate large fan shape, radial line clear.	Mandible: Apical tooth large, 3 inner teeth small. 　Blade sharp, needle like. 　Anal setae 8, procercus short.	Ｓ�T: thin long needle like. 　Ｓ�U: thick, strong. 　Pecten epipharyngis divided into 2　　　　 distally. 　Premandible with 4〜5 teeth.
Antenna with 6 segments. segment 4〜6 very short. Blade seated in distal 2/5 of segment 2, accessory blade 1/5 of blade. Small Lauterborn's organ seated on segment 3 distally. 　 　Style longer than Lauterborn's organ．

Median tooth of mentum wide arc, the same of 4 lateral teeth. Lateral teeth with 6 pairs , 3rd. and 6th. tooth small. 　Ventromental plate fan shape, with about 10〜20 lines.	Ｓ�T,Ｓ�Uboth thick needle like. 　Pecten epipharyngis 2 triangular plates. 　Premandible with 4 teeth, brush lacking.	Apical tooth and 3 inner teeth both thin , pale brown. 　Seta subdentalis reach 2nd. inner tooth.
Antenna with 5 segments, 3rd.〜5th. segments short. Lauterborn's organ lacking, long style present.　Blade reach tip of antenna.	Anal setae 7〜8, procercus short.

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　return to top of this page

Hanochironomus

not detaile datas

return to top of this page

return to search & classificasion