Zeadolopus, Broun, 1903

Peck, Stewart B. & Cook, Joyce, 2014, A review of the small carrion beetles and the round fungus beetles of the West Indies (Coleoptera: Leiodidae), with descriptions of two new genera and 61 new species., Insecta Mundi 2014 (397), pp. 1-76 : 15-18

Key to species of male Zeadolopus of the West Indies

1. Occurs in the Bahamas or Greater Antilles (including the Virgin Islands) ............................... 2

— Occurs in the Lesser Antilles ...................................................................................................... 27

2(1). Occurs in Bahamas; small, total length 1.2–1.3 mm; inverted internal sac of aedeagus ( Fig. 37 ) with unique “A”-shaped configuration of sclerites .... Z. bahamensis Peck and Cook , n.sp.

— Does not occur in Bahamas; aedeagus without “A” shaped configuration of sclerites in inverted internal sac ................................................................................................................................. 3

3(2). Occurs on Cuba.............................................................................................................................. 4

— Occurs elsewhere in the Greater Antilles ..................................................................................... 8

4(3). Larger, usually more than 2 mm in length; dark reddish brown to black ................................. 5

— Smaller, usually less than 2 mm in length; yellow to yellowish brown ...................................... 6

5(4). Posterior margin of meso- and metafemur concave, not expanded; median tube of aedeagus ( Fig. 39 ) subtended apically by paired shorter rods that are recurved basally ................................... .............................................................................................. Z. atratus Peck and Cook , n.sp.

— Posterior margin of metafemur expanded, forming broad median toothlike process;; aedeagus ( Fig. 40 ) without conspicuous paired terminal rods lateral to median tube at apex ................. ............................................................................................ Z. cubensis Peck and Cook , n.sp.

6(4). Median lobe of aedeagus ( Fig. 41 ) constricted before apex; inverted internal sac medially with pair of sclerites bearing short spines ................................. Z. flavidus Peck and Cook , n.sp.

— Median lobe of aedeagus with apex evenly rounded; inverted internal sac without spines ....... 7

7(6). Paired apices of median lobe of aedeagus ( Fig. 42 ) appearing truncate in dorsal view; inverted internal sac medially with 2 pairs of small sclerites .......... Z. lucidus Peck and Cook , n.sp.

— Paired apices of median lobe of aedeagus ( Fig. 43 ) acute in dorsal view; inverted internal sac medially with 2 consecutive structures, each broadened at base ................................................ ............................................................................................. Z. pusillus Peck and Cook , n.sp.

8(3). Occurs on Cayman Islands; inverted internal sac ( Fig. 38 ) medially with 2 consecutive structures with broadened bases, and with cluster of setae apically ............................................................ .................................................................................... Z. caymanensis Peck and Cook , n.sp.

— Occurs elsewhere in the Greater Antilles; aedeagus without 2 consecutive medial structures with broadened bases and cluster of setae apically in inverted internal sac .................................... 9

9(8). Occurs on Jamaica....................................................................................................................... 10

— Occurs elsewhere in the Greater Antilles ................................................................................... 13

10(9). Small, length less than 1.0 mm; eyes reduced, flight wings reduced; parameres distinctly shorter than median lobe of aedeagus ( Fig. 47 ) ....................................................... Z. microps (Peck)

— Usually larger, length 1.0 mm or more; eyes large, flight wings fully developed; parameres not distinctly shorter than median lobe of aedeagus .................................................................... 11

11(10). Vertical face of mesosternum triangular ventrally, narrowing dorsally to form median carina that is continuous with median carina of horizontal face of mesosternum; inverted internal sac of aedeagus ( Fig. 45 ) with median urn-shaped structure containing 2 pairs of small sclerites .......................................................................................... Z. carinatus Peck and Cook , n.sp.

— Vertical face of mesosternum broad, smooth, not carinate; inverted internal sac of aedeagus without median urn-shaped structure containing 2 pairs of small sclerites ......................... 12

12(11). Smaller species, total length 0.9–1.4 mm; uniformly yellowish to light reddish brown; paired apices of aedeagus ( Fig. 46 ) broad; inverted internal sac with pair of elongate rodlike structures separated medially ................................................................................. Z. jamaicensis (Peck)

— Larger species, total length 1.7–1.9 mm; reddish brown, pronotum darker, head nearly black; paired apices of aedeagus ( Fig. 44 ) narrow, down-turned, appearing truncate in dorsal view; inverted internal sac with median rodlike structure subtended near base by pair of short, narrow sclerites ............................................................................................... Z. bicolor (Peck)

13(9). Occurs on Hispaniola; internal sac of aedeagus without median rodlike structure and pair of thin sclerites converging and widening apically ............................................................................. 14

— Occurs on the the islands of Puerto Rico, Mona, St. Croix, and in the Virgin Islands; inverted internal sac of aedeagus ( Fig. 62 ) with median rodlike structure and pair of thin sclerites converging and widening apically, with lateral processes ............... Z. puertoricensis (Peck)

14(13). Larger, total length usually greater than 2.0 mm; vertical face of mesosternum broad, convex, not carinate ............................................................................................................................... 15

— Smaller, total length 1.0–2.0 mm; vertical face of mesosternum usually concave, lateral margins of concavity forming carinae that converge at base; if vertical face of mesosternum convex, total length less than 1.5 mm .................................................................................................. 20

15(14). Body moderately convex; metatibia elongate, parallel-sided; metatarsomere 1 at least as long as 2–4 combined ............................................................................................................................ 16

— Body strongly convex; metatibia broad at apex; metatarsomere 1 shorter than 2–4 combined ... ................................................................................................................................................... 17

16(15). Metatarsomere 2 bearing strong spine that is longer than metatarsomere 3; parameres of aedeagus ( Fig. 58 ) broad, inwardly curved apically; inverted internal sac with pair of rodlike structures ............................................................................................. Z. longipes Peck and Cook , n.sp.

— Metatarsomere 2 unmodified; parameres of aedeagus ( Fig. 52 ) slender, straight; inverted internal sac with pair of slender rodlike structures that are joined in apical half and surrounded by cone-shaped structure medially ............................. Z. hispaniolensis Peck and Cook , n.sp.

17(15). Mesotibia with elongate, curved spine at inner apical margin ....................................................... ............................................................................................ Z. acinaces Peck and Cook , n.sp.

— Mesotibia lacking elongate, cruved spine at inner apical margin ............................................. 18

18(17). Metafemur without toothlike process at apex of posterior margin; aedeagus ( Fig. 53 ) broad, truncate apically ........................................................................ Z. iviei Peck and Cook , n.sp.

— Metafemur with toothlike process at apex of posterior margin; aedeagus not broad and apically truncate ..................................................................................................................................... 19

19(18). Body with moderate to strong reticulate microsculpture; median lobe of aedeagus ( Fig. 49 ) with paired apices down-turned; inverted internal sac with elongate median structure and apical inverted “V”-shaped sclerite ............................................. Z. caborojo Peck and Cook , n.sp.

— Body shining, elytra with faint reticulate microsculpture; median lobe of aedeagus ( Fig. 61 ) with paired apices inwardly curved, apically acute; inverted internal sac with single elongate structure medially ......................................................................... Z. pedernales Peck and Cook , n.sp.

20(14). Vertical face of mesosternum concave; lateral margins of concavity forming carinae that converge at base; total length 1.2–2.0 mm .............................................................................................. 21

— Vertical face of mesosternum convex, smooth; total length 1.0– 1.3 mm .................................. 25

21(20). Paired apices of median lobe of aedeagus ( Fig. 54 ) each with small dorsal appendage; inverted internal sac with small, narrow sclerites forming an inverted “V” with 2 crossbars ............... ......................................................................................... Z. jarabacoa Peck and Cook , n.sp.

— Paired apices of median lobe of aedeagus without appendages; inverted internal sac without small, narrow sclerites forming an inverted “V” with 2 crossbars ........................................ 22

22(21). Paired rodlike structure of inverted internal sac of aedeagus ( Fig. 59 ) separate throughout length, subtended by pair of shorter sclerites apically ............ Z. oviedoensis Peck and Cook , n.sp.

— Rodlike structures of inverted internal sac of aedeagus separate only at base ........................ 23

23(22). Paired apices of median lobe of aedeagus ( Fig. 55 ) slender, apices acute ...................................... .............................................................................................. Z. lavega Peck and Cook , n.sp.

— Paired apices of median lobe of aedeagus appearing blunt in dorsal view ................................ 24

24(23). Parameres of aedeagus ( Fig. 51 ) short, sinuate before base .......................................................... ........................................................................................ Z. hatomayor Peck and Cook , n.sp.

— Parameres of aedeagus ( Fig. 60 ) elongate, nearly straight ... Z. paulus Peck and Cook , n.sp.

25(20). Inverted internal sac of aedeagus ( Fig. 56 ) with setose urn-shaped sclerite ................................. ........................................................................................ Z. minisculus Peck and Cook , n.sp.

— Inverted internal sac of aedeagus without setose urn-shaped sclerite ...................................... 26

26(25). Parameres of aedeagus ( Fig. 57 ) slender; inverted internal sac with pair of elongate rodlike structures joined in apical half ............................................. Z. nanus Peck and Cook , n.sp.

— Parameres of aedeagus ( Fig. 50 ) robust; inverted internal sac with distinct separation of median rodlike structures before base ............................................ Z. exiguus Peck and Cook , n.sp.

27(1). Vertical face of mesosternum concave with lateral carinae; parameres of aedeagus ( Fig. 63 ) with broad apices bearing elongate setae; Antigua, Montserrat, Saba, St. Kitts............................... ...................................................................................... Z. antiguensis Peck and Cook , n.sp.

— Vertical face of mesosternum convex or flat, not carinate; paramere apices with short setae ..... ................................................................................................................................................... 28

28(27). Median lobe of aedeagus ( Fig. 67 ) short; parameres short; paired apices of median lobe each with toothlike lateral process; Grenada, St. Vincent, St. Lucia...... Z. conicitarsus (Champion)

— Median lobe of aedeagus elongate; parameres extend at least to apex of median lobe; paired apices lack lateral processes ................................................................................................................ 29

29(28). Median lobe of aedeagus ( Fig. 69 ) elongate, cylindrical, strongly angulate dorsoventrally; St. Vincent............................................................................ Z. angulatus Peck and Cook , n.sp.

— Median lobe of aedeagus broad, more or less flattened, weakly curved dorsoventrally ........... 30

30(29). Parameres of aedeagus ( Fig. 65 ) expanded apically; inverted internal sac with median cluster of short, broad setae; Dominica.......................................... Z. dominica Peck and Cook , n.sp.

— Parameres of aedeagus narrow apically; inverted internal sac without cluster of short, broad setae ........................................................................................................................................... 31

31(30). Inverted internal sac of aedeagus ( Fig. 66 ) with 2 consecutive median tubular structures; anteriorly, small median sclerite with lateral and basal extensions; St. Lucia and Martinique................. ............................................................................................. Z. nesiotes Peck and Cook , n.sp.

— Inverted internal sac of aedeagus ( Fig. 64 ) with distinct rodlike structure in basal half; small sclerites at middle; widespread in Lesser Antilles ........................................................................ .............................................................................. Z. parvantilliensis Peck and Cook , n.sp.

Figures

Figures 37–43. Aedeagi, dorsal view, of Zeadolopus. 37) Z. bahamensis. 38) Z. caymanensis. 39) Z. atratus. 40) Z. cubensis. 41) Z. flavidus. 42) Z. lucidus. 43) Z. pusillus. Scale line = 0.30 mm.

Figures 44–49. Aedeagi, dorsal view, of Zeadolopus. 44) Z. bicolor. 45) Z. carinatus. 46) Z. jamaicensis (from Peck 1977). 47) Z. microps (from Peck 1977). 48) Z. acinaces. 49) Z. caborojo. Scale line = 0.30 mm.

Figures 59–64. Aedeagi, dorsal view, of Zeadolopus. 59) Z. oviedoensis. 60) Z. paulus. 61) Z. pedernales. 62) Z. puertoricensis (from Peck 1977). 63) Z. antiguensis. 64) Z. parvantilliensis. Scale line = 0.30 mm.

Figures 50–58. Aedeagi, dorsal view, of Zeadolopus. 50) Z. exiguus. 51) Z. hatomayor. 52) Z. hispaniolensis. 53) Z. iviei. 54) Z. jarabacoa. 55) Z. lavega. 56) Z. minisculus. 57) Z. nanus. 58) Z. longipes. Scale line = 0.20 mm, Fig. 50, 57; 0.30 mm, Fig. 51–56; 0.40 mm, Fig. 58.

Figures 65–69. Aedeagi of Zeadolopus. 65) Z. dominica, dorsal view. 66) Z. nesiotes, dorsal view. 67) Z. conicitarsus, dorsal view. 68, 69) Z. angulatus, dorsal and lateral view. Scale line = 0.30 mm.