Menigrates Boeck, 1871

Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), Zootaxa 3867 (1), pp. 1-92 : 38-41

Menigrates Boeck, 1871

( Fig. 24 )

Menigrates Boeck, 1871: 113 .— Sars, 1891: 110.— Stebbing, 1894: 15.— Stebbing, 1906: 48.—J.L. Barnard, 1969: 349.— Lincoln, 1979: 92.— Barnard & Karaman, 1991: 438 (key), 500.

Type species. Anonyx obtusifrons Boeck, 1861 , monotypy.

Included species. Menigrates includes five taxa: M. angustipes Gurjanova, 1962 ; M. maslovi Bryazgin, 1974 ; M. obtusifrons ( Boeck, 1861) ; M. spinirami spinirami Gurjanova, 1936 ; M. spinirami japonica Gurjanova, 1962 .

Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum with or without cap covering callynophore. Antenna 2 without brush setae. Mandible molar with reduced column and reduced triturating surface. Maxilla 1 outer plate with 7 well-developed setal-teeth in modified 7/4 crown. Maxilla 2 inner plate slightly shorter than outer plate. Gnathopod 1 weakly subchelate; coxa 1 large, about as long as coxa 2, subrectangular with concave or straight anterior margin; ischium short (length less than 2 × breadth); carpus short (length 1 to 2 × breadth); propodus margins tapering distally. Uropod 2 inner ramus not constricted. Telson moderately cleft , notched to emarginate.

Remarks. Based on gnathopod 1 coxa and carpus and the moderately cleft telson Menigrates is most similar to Anonyx and Onisimus . Menigrates differs from both of these genera in the reduced number of setal-teeth on the outer plate of maxilla 1 and the weakly subchelate gnathopod 1.

Figures

FIGURE 24. Menigrates obtusifrons (Boeck, 1861), syntypes, sex unknown, 4.0 mm (mouthparts, gnathopods) and 5.0 mm (remainder), ZMO F13157, from Karmø, Norway. Habitus after Sars (1891). Scale bars: 0.1 mm.