Whole Larvae
Genus-specific Diagnostic Characters, Larval
Stage
- Larvae of Verrallina are very difficult to separate from Aedes. For a
definitive determination please refer to the list of 16 characters with
numerous exceptions found in:
-
Reinert, J.F. 1999. Restoration of
Verrallina to generic rank in Tribe Aedini (Diptera: Culicidae) and descriptions
of the genus and three included subgenera. Contr. Am. Entomol. Inst. 31(3):15.
- "The following principal features, in combination, distinguish genus
Verrallina and can be used in separating this genus from the other genera
of Aedini:...in the fourth-instar larvae by (1) arrangement and development
of setae 4-7-C (i.e., seta 4-C is short, multiple-branched and mesad and
slightly cephalad of seta 6-C; seta 5-C is caudad and slightly mesad of seta
6-C and laterad and caudad of seta 4-C, bases of setae 5,6-C are widely
separated; seta 7-C is laterad and slightly cephalad of seta 6-C or seta 7-C
is laterad and at same level as seta 6-C in a few species; setae 5-7-C are
stout, branched and approximately equal in length or 7-C is only slightly
shorter than 5,6-C (Ve. unca has seta 6-C single), (2) seta 11-C is
very short to short and multiple-branched, (3) antenna 1 shaft has numerous
spicules, seta 2-A has a subapical constriction, and 2-6-A are all situated
apically, (4) seta 7-11 is short and branched and seta 7-I is long and
single to 3-branched, (5) seta 8-P is long, thickened and usually single
(occasionally 2- branched, very rarely 3-branched), (6) setae 1,3-VII are
both short and multiple-branched, seta 4- VII is branched (rarely single),
(7) seta 8-111-V is single and short, (8) setae 4-M and 2-T are branched,
(9) seta 2-X is moderately long and multiple-branched (single in one
species) and seta 3-X is very long and single, (10) seta 2-VIII is longer
than seta I-VIII (? except some published illustrations of Neomacleaya),
(11) seta 6-S is single (occasionally 2-branched), short and seta 8-S is
short and usually multiple-branched, (12) saddle in completely rings segment
X, is without spines on posterior margin and acus is absent, (13) pecten has
6-20 (usually 12-16) spines, distal l-5 spines are wider spaced than
remainder, (14) siphon has an acus, (15) setae 5,6-P are single (Ve.
nigrotarsis is 2-branched) and (16) ventral brush (seta 4-X) usually has
10 setae on grid and two or three precratal shorter setae, all are
multiple-branched;"
Culicidae » Culicidae » Aedini
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- Representative species shown here:
- Verrallina carmenti