Metaparia, CROTCH, 1873

Sublett, Clayton A. & Cook, Jerry L., 2021, A Comprehensive Revision of the Genus Metaparia Crotch, 1873 (Coleoptera: Chrysomelidae: Eumolpinae) and Description of a New Genus, The Coleopterists Bulletin 75 (4), pp. 779-811 : 783-784

KEY TO MALES OF THE SPECIES OF METAPARIA CROTCH, 1873

1. Clypeal apex straight or weakly emarginate ( Fig. 5 ); emargination at apex of median lobe of aedeagus V-shaped ( Figs. 6 , 23 ) ............. 2

1′. Clypeal apex deeply emarginate, not straight ( Figs. 27 , 45 ); emargination at apex of median lobe of aedeagus arched or semicircular ( Figs. 12 , 18 , 29 , 35 , 41 , 47 , 53 ) …………………… 3

2(1). Anterior corners of pronotum strongly deflexed; punctation on elytra coarse, subrugulose ( Figs. 20, 21 ); basal hood of aedeagus ca. 0.5× length of median lobe; emargination at apex of median lobe broadly V-shaped ( Fig. 23 ) ………… M. hybrida ( Jacoby, 1881)

2′. Anterior corners of pronotum not deflexed; punctation on elytra not coarse or subrugulose ( Figs. 3, 4 ); basal hood of aedeagus subequal in length to median lobe; emargination at apex of median lobe narrowly V-shaped ( Fig. 6 ) ……………… M. cephalotes ( Lefèvre, 1877)

3(1′).Clypeal emargination trapezoidal or M-shaped ( Fig. 27 ) …………………………………… 4

3′. Clypeal emargination smoothly arched or broadly triangular ( Fig.39 )………….……… 5

4(3). Male mandibles strongly convex laterally, bulbous ( Fig. 16 ); at least antennomeres 10 and 11 reaching past pronotal posterior margin; posterior edge of prosternum straight; punctation on elytra subrugulose ( Figs. 14, 15 ); anterolateral corners of median lobe of aedeagus straight ( Fig. 18 ); spermatheca weakly W-shaped, with base and apex slightly bulbous ( Fig. 17 ) ……… …………… M. guatemalensis ( Jacoby, 1890)

4′. Male mandibles laterally convex, but not bulbous ( Fig. 27 ); no more than antennomere 11 reaching past pronotal posterior margin; posterior edge of prosternum concave; punctation on elytra smooth ( Figs. 25, 26 ); anterolateral corners of median lobe of aedeagus rounded ( Fig. 29 ); spermatheca broadly U-shaped, with base and apex strongly bulbous ( Fig. 28 ) ………………… M. lesueuri ( Lefèvre, 1875)

5(3′).Space between punctures on head and pronotum strongly, evenly microsculptured ( Figs. 8, 10 , 37, 39 )………………...….…………… 6

5′. Microsculpturing on head and pronotum light, uneven, mostly restricted to the head and anterior pronotal corners ( Figs. 31, 33 ) ……… 7

6(5). Body elongate oval, dorsoventrally weakly convex ( Figs. 8, 9 ); head, pronotum, and elytra metallic green; elytra microsculptured between punctures; prosternal lateral arms narrow, not produced anteriorly ( Fig. 2b ); apical emargination of median lobe of aedeagus arcuate ( Fig. 12 ); spermatheca narrowly U-shaped, with base bent away from apex ( Fig. 11 ) ……… M. clytroides Crotch, 1873

6′. Body ovate, dorsoventrally strongly convex ( Figs. 37, 38 ); head, pronotum, and elytra blue, blue-green, or blue-purple; elytra often colored differently than head and pronotum; elytra smooth between punctures; prosternal lateral arms moderately convex, produced anteriorly ( Fig. 2g ); apical emargination of medi- an lobe of aedeagus broadly triangular ( Fig. 41 ); spermatheca moderately, broadly U-shaped, with base bent towards apex ( Fig. 40 ) ……… ……………… M. opacicollis ( Horn, 1892)

7(5′).Male mandibles with prominent ridge or lobe along outer basal edge ( Figs. 33 , 45 ); endophallic opening of median lobe evenly rounded ( Figs. 35 , 47 ); spermatheca narrowly U-shaped ( Figs. 34 , 46 ) …………………… 8

7′. Male mandibles smooth dorsally, without any lobe or ridge ( Fig. 51 ); endophallic opening of median lobe acuminate ( Fig. 53 ); spermatheca broadly U-shaped ( Fig. 52 ) ………… ……………… M. viridimicans ( Horn, 1892)

8(7). Male mandibles with prominent ridge perpendicular to the mandibular dorsal face ( Fig. 45 ); prosternal lateral arms strongly convex, tapering dorsally, not connecting with anterior pronotal margin ( Fig. 2h ); apical emargination of median lobe of aedeagus strongly produced; sclerotized region around endophallic opening thick apically ( Fig. 47 ); spermatheca with sclerotized patch basally ( Fig. 46 ) ……………… …………………… M. prosopis , new species

8′. Male mandibles with prominent lobe at 45° to the mandibular dorsal face ( Fig. 33 ); prosternal lateral arms moderately convex, connecting with anterior pronotal margin ( Fig. 2f ); apical emargination of median lobe of aedeagus not produced; sclerotized region around endophallic opening thin apically ( Fig. 35 ); spermatheca without sclerotized patch basally ( Fig. 34 ) … M. mandibuloflexa , new species

Figures

Figs. 3–7. Lectotype of Metaparia cephalotes. 3) Dorsal habitus; 4) Lateral habitus; 5) Head, frontal view; 6) Median lobe, apical view; 7) Median lobe, lateral view. Figs. 3, 4 scale bars = 1.0 mm; Figs. 5–7 scale bars = 0.5 mm.

Figs. 20–24. Holotype of Metaparia hybrida. 20) Dorsal habitus; 21) Lateral habitus; 22) Head, frontal view; 23) Median lobe, apical view; 24) Median lobe, lateral view.Figs. 20, 21, 23, 24 scale bars = 1.0 mm; Fig. 22 scale bar = 0.5 mm.

Figs. 25–30. Lectotype of Metaparia lesueuri. 25) Dorsal habitus; 26) Lateral habitus; 27) Head, frontal view; 28) Spermatheca; 29) Median lobe, apical view; 30) Median lobe, lateral view. Figs. 25, 26 scale bars = 1.0 mm; Figs. 27, 29, 30 scale bars = 0.5 mm; Fig. 28 scale bar = 0.1 mm.

Figs. 43–48. Holotype of Metaparia prosopis, new species. 43) Dorsal habitus; 44) Lateral habitus; 45) Head, frontal view; 46) Spermatheca; 47) Median lobe, apical view; 48) Median lobe, lateral view. Figs. 43, 44 scale bars = 1.0 mm; Figs. 45, 47, 48 scale bars = 0.5 mm; Fig. 46 scale bar = 0.1 mm.

Figs. 8–13. Lectotype of Metaparia clytroides. 8) Dorsal habitus; 9) Lateral habitus; 10) Head, frontal view; 11) Spermatheca; 12) Median lobe, apical view; 13) Median lobe, lateral view. Figs. 8, 9, 12, 13 scale bars = 1.0 mm; Fig. 10 scale bar = 0.5 mm; Fig. 11 scale bar = 0.1 mm.

Figs. 14–19. Lectotype of Metaparia guatemalensis. 14) Dorsal habitus; 15) Lateral habitus; 16) Head, frontal view; 17) Spermatheca; 18) Median lobe, apical view; 19) Median lobe, lateral view. Figs. 14, 15 scale bars = 1.0 mm; Figs. 16, 18, 19 scale bars = 0.5 mm; Fig. 17 scale bar = 0.1 mm.

Figs. 31–36. Holotype of Metaparia mandibuloflexa, new species. 31) Dorsal habitus; 32) Lateral habitus; 33) Head, frontal view; 34) Spermatheca; 35) Median lobe, apical view; 36) Median lobe, lateral view. Figs. 31, 32 scale bars = 1.0 mm; Figs. 33, 35, 36 scale bars = 0.5 mm; Fig. 34 scale bar = 0.1 mm.

Figs. 37–42. Lectotype of Metaparia opacicollis. 37) Dorsal habitus; 38) Lateral habitus; 39) Head, frontal view; 40) Spermatheca; 41) Median lobe, apical view; 42) Median lobe, lateral view. Figs. 37, 38 scale bars = 1.0 mm; Figs. 39, 41, 42 scale bars = 0.5 mm; Fig. 40 scale bar = 0.1 mm.

Figs. 49–54. Lectotype of Metaparia viridimicans. 49) Dorsal habitus; 50) Lateral habitus; 51) Head, frontal view; 52) Spermatheca; 53) Median lobe, apical view; 54) Median lobe, lateral view. Figs. 49, 50 scale bars = 1.0 mm; Figs. 51, 53, 54 scale bars = 0.5 mm; Fig. 52 scale bar = 0.1 mm.

Fig. 2. Lateral arm of prosternum of species of Metaparia. a) M. cephalotes, b) M. clytroides, c) M. guatemalensis, d) M. hybrida, e) M. lesueuri, f) M. mandibuloflexa, new species, g) M. opacicollis, h) M. prosopis, new species, i) M. viridimicans. Scale bars = 0.5 mm. Left side is anterior edge.