Download PDF as one large file - AToL Decapoda

82 Family Penaeidae
Family Penaeidae
Key to genera and species
[Adapted from P6rez Farfante, 1978]
1. Rostrum toothed on dorsal margin, usually also on ventral margin; pleurobranch
present on last thoracic somite 2
Rostrum toothed on dorsal margin only; no pleurobranch on last thoracic somite... 3
2. (1) Carapace hairy Funchalia villosa
Carapace smooth Penaeus
3. (1) Telson tridentate, with fixed spine on each side of tip; mesial border of first
segment of antennular peduncle bearing spine (parapenaeid spine) 4
Telson usually without fixed spines; no spine on mesial border of first segment of
antennular peduncle 6
4. (3) Carapace with longitudinal and transverse sutures Parapenaeus
Carapace without longitudinal or transverse sutures .5
5. (4) Male with symmetrical petasma; single arthrobranch on last thoracic somite, no
trace of second arthrobranch Penaeopsis serrata
Male with asymmetrical peasma; 2 arthrobranchs present on last thoracic somite,
one of them well developed, other vestigial Metapenaeopsis
6. (3) Dactyli of fourth and fifth pairs of pereopods elongate and subdivided.
Xiphopenaeus kroyeri
Dactyli of fourth and fifth pairs of pereopods of normal shape and undivided 7
7. (6) Carapace without longitudinal sutures. Trachypeneopsis mobilispinis
Carapace with longitudinal sutures (upper antennular flagella shorter than carapace
and not much longer than lower flagella; fourth and fifth pairs of pereopods about
as heavy as 3 anterior pairs; exopod of fifth pair of pereopods well developed)
Trachypenaeus