CUMACEA - NMBAQC

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carpus exopod propodus merus dactyl ischium basis Pereopod 1 Pereopod 2 Pereopod 3 Pereopod 4 Pleopod 1 Pleopods Pleopod 2 Exopod Uropod Figure 4: Thoracic and abdominal appendages: pleopods (top to bottom) of Pseudocumatidae, Diastylidae and Bodotriidae (from Sars, 1900); pereopods and uropods of Leuconidae (from Shalla and Bishop, 2003). Endopod 12
Sexual dimorphism There is always some sexual dimorphism in adults, more pronounced in some families than in others, but almost always including: better development of the second antenna in the male; the presence of oostegites (brood pouch) in the female; the presence of pleopods (except in Nannastacidae) in the male; the presence of more or better-developed exopods on the thoracic appendages in the male, and sometimes differences in shape and ornamentation of the carapace, as well as differences in the development of some sense organs. General distinction between sexes in adult cumaceans: Female Male Antenna 2 Rudimentary Well developed, with long flagellum Oostegites or brood pouch Present Absent Pleopods No Yes (except in Nannastacidae) Exopods on thoracic appendages A2 of ♂ Leucon jonesi (from Bishop 1981) Less developed More developed (except Bodotriidae) 13
Page 1 and 2: NMBAQC workshop 2010 CUMACEA Identi
Page 3 and 4: Introduction Cumacea are a very dis
Page 5 and 6: and causing taxonomic problems. In
Page 7 and 8: Carapace Pereon Pleon A B Pseudoros
Page 9 and 10: The second antenna (antenna) is gen
Page 11: The first two pairs of pereopods (F
Page 15 and 16: the first and second maxillae toget
Page 17 and 18: 4- ♂ with 3, 4 or 5 pairs of pleo
Page 19 and 20: Family DIASTYLIDAE Diagnosis (as em
Page 21 and 22: Lower front edges of carapace with
Page 23 and 24: 15. The pre-anal part of the telson
Page 25 and 26: Telson with more than 4 lateral spi
Page 27 and 28: Family: LAMPROPIDAE Diagnosis (Day,
Page 29 and 30: 5- Dorsal crest denticulate in the
Page 31 and 32: Carapace with relatively inconspicu
Page 33 and 34: Key to the British Species of Pseud
Page 35 and 36: Family BODOTRIIDAE Diagnosis (emend
Page 37 and 38: 6- Pereon with 5 free somites, pere
Page 39 and 40: Family NANNASTAClDAE Diagnosis (eme
Page 41 and 42: 5- Dactyl of pereopod 2 longer than
Page 43 and 44: Merus of maxilliped 3 much shorter
Page 45 and 46: Family LEUCONIDAE Diagnosis (from J

CUMACEA - NMBAQC

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