Larval Morhology Of Hydrotarsus Falkenström: Generic Characteristics, Description Of H. Compunctus (Wollaston), And Analysis Of Relationships With Other Members Of The Tribe Hydroporini (Coleoptera: Dytiscidae, Hydroporinae) Author Alarie, Yves Department of Biology, Laurentian University, Ramsey Lake Road Sudbury, Ontario, P 3 E 2 C 6, CANADA Author Bilton, David T. Plymouth Environmental Research Centre (PERC) Department of Biological Sciences, University of Plymouth Drake Circus, Plymouth PL 4 8 AA, UNITED KINGDOM text The Coleopterists Bulletin 2001 2001-09-30 55 3 341 350 http://dx.doi.org/10.1649/0010-065x(2001)055[0341:lmohfm]2.0.co;2 journal article 304899 10.1649/0010-065X(2001)055[0341:LMOHFM]2.0.CO;2 f5fee6a4-c703-4c1e-98d7-a0578adf73a6 10102577

Table 1. Number of secondary setae on the legs of second­ and third instar of Hydrotarsus compunctus (Wollaston). A = anterior, AD = anterodorsal, AV = anteroventral, CO = coxa, D = dorsal, FE = femur, PD = posterodorsal, Pr = proximal, PV = posteroventral, TA = tarsus, TI = tibia, TR = trochanter, V = ventral, n = number of specimens studied, range = total number of secondary setae on segment.

Segment	Sensillar series	Instar II (n = 1)	Instar III (n = 2)	Segment	Instar
					Sensillar series	II (n = 1)	Instar III (n = 2)
	D	2	4	MesoTI	AD	1	1
	A	0	1–2		AV	1	1–2
	V	1	1–2		Range	2	2–3
	Range	3	6–8	MesoTA	Range	0	0
ProTr	Pr	1	1	MetaCO	D	2	3–4
ProFE	AD	2	3–4		A	1	3–4
	AV	3	2–4		V	1	1–2
	PV	3	5		Range	4	7–9
	Range	8	10–13	MetaTR	Pr	1	1
ProTI	Range	0	0	MetaFE	AD	3	4–6
ProTA	Range	0	0		AV	3	7–9
MesoCO	D	2	3–4		PV	4	5–7
	A	0	2		Range	10	16–20
	V	1	1	MetaTI	AD	1	1
	Range	3	6–7		AV	1	1–2
MesoTR	Pr	1	1		Range	2	2–3
MesoFE	AD	3	3–4	MetaTA	Range	0	0
	AV	3	6–8
	PV	3	5–7
	Range	9	15–18