Cactophagus
Creators: name: Anderson, Robert S.
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Dryophthoridae
Cactophagus

description: Key to species of Cactophagus in Costa Rica and Panama (after Vaurie 1966, 1967)
1 Pronotum deeply laterally incised subapically immediately behind eye; in dorsal view, lateral margin with distinct, deep subapical emargination, apex distinctly tubulate; pronotum and (especially) elytra with coarse, irregular sculpture ................................ 2
­ Pronotum at most slightly laterally impressed subapically behind eye, not distinctly incised; in dorsal view, lateral margin more or less continuous to apex, at most slightly constricted subapically or rarely subemarginate; pronotum and elytra generally lacking coarse sculpture............................................................................................................. 5
2 Elytra smooth and even, lacking "wart­like" swellings, striae and intervals uniform, not distorted by swellings; elytra very slightly transversely impressed at anterior and posterior one­thirds but not deeply plicate; color black with elytral intervals 3 and 9 orange throughout most of their lengths .................. C. lineatus Anderson, new species
­ Elytra with moderate to large, "wart­like" swellings which distort striae and intervals; elytra distinctly, deeply transversely plicate at anterior and posterior one­thirds; color uniformly black or elytra black with few red spots near base....................................... 3
3 Color black, elytra with distinct red spots at base of interval 3, on humerus and sub­
apically on interval 9; Panama .................................. C. morrisi Anderson, new species ­ Color uniformly black; Costa Rica ................................................................................ 4
4 Pronotum with subbasal impression weakly carinate; prosternum between coxae narrow, not tuberculate…. .......................................................... C. verrucosus (Champion)
­ Pronotum with subbasal impression not carinate; prosternum between coxae wider, slightly tuberculate ................................................................ C. gibberosus (Champion)
5 Outer apex of tibia bidentate; male femora with inner margin with distinct tooth ......... .............................................................................................. C. transatlanticus (Kirsch)
­ Outer apex of tibia rounded or obtusely angulate; male femora with inner margin lacking tooth, simple............................................................................................................ 6
6 Metasternum with round or conical protuberance between middle coxae.................... 7
­ Metasternum feebly rounded or flat between middle coxae ....................................... 13
7 Pronotum with three round, equidistant depressions; antennal club with pilose apical portion one­quarter or less length of entire club; elytra yellowish with black borders and spots............................................................................ C. graphipterus (Champion)
­ Pronotum with one depression at middle of base; antennal club with pilose apical portion one­third or more length of entire club; elytra black, or black with red or orange bands or stripes.............................................................................................................. 8
8 Metasternal protuberance rounded, not larger than bulge of coxa; mesepimeron with outer front corner turned upward or backward…................... C. pruinosus (Champion)
­ Metasternal protuberance conical, larger than bulge of coxa; mesepimeron with outer front corner flat.............................................................................................................. 9
9 Rostrum densely, coarsely punctate laterally in basal one­half, sides in front of scrobe with hairy, elongate depression formed by coalescent punctures... C. viduus (Hustache)
­ Rostrum very finely punctate or impunctate laterally, sides in front of scrobe smooth.. ..................................................................................................................................... 10
10 Rostrum with upper margin of scrobe straight, base not dilated over scrobes................ ................................................................................................ C. aurofasciatus (Breme)
­ Rostrum with upper margin of scrobe with small angulation or sinuation, base dilated (at least slightly) over scrobes..................................................................................... 11
11 Elytra black, with large black velvety patch on each elytron (feebly defined in some specimens); prosternum with round swelling in front of each coxa ............................... ............................................................................................... C. carinipyga (Champion)
­ Elytra black, with 1 or 2 transverse orange or red bands; prosternum smooth in front of each coxa ..................................................................................................................... 12
12 Elytra with 2 red bands, one subbasal, the other at apical one­quarter; pronotum markedly sinuate at middle; scutellum distinctly emarginate anteriorly................................. ............................................................................................ C. duplocinctus (Champion)
­ Elytra with a single red basal band; pronotum very slightly sinuate at middle; scutellum slightly concave anteriorly.......................... C. riesenorum Anderson, new species
13 Antenna with pilose apical portion very small, less than one­fourth or one­fifth length of club.......................................................................................................................... 14
­ Antenna with pilose apical portion one­third or more length of club ......................... 16
14 Hind tibia broad, flat and "paddle­like", width at middle about one­third length........... ..................................................................................... C. silron Anderson, new species
­ Hind tibia typically slender and elongate, width at middle much less than one­third length............................................................................................................................15
15 Pronotum with basal depression and two or more additional depressions; antennal club symmetical in profile…....................................................... C. aurocinctus (Champion)
­ Pronotum with single shallow basal depression or no depression; antennal club oblique in profile, one side longer than the other....................... C. strigosus (Erichson)
16 Rostrum with ventral surface with long or short hairs................................................ 17
­ Rostrum with ventral surface glabrous........................................................................ 18
17 Rostrum with ventral hairs sparse, tiny, basal; pronotum and elytra with velvety black areas; elytral apices truncate ............................ C. miniatopunctatus Chevrolat (in part)
­ Rostrum with ventral hairs dense, long, in two distinct rows; pronotum and elytra without velvety black areas but with tumid orange spots; elytral apices separately rounded....................................................................................... C. personatus (Vaurie)
18 Elytra black, with single transverse red band at extreme base (band may be incomplete at middle or divided at sides) ...................................................................................... 19
­ Elytra without transverse red band or if present, not at base, or with other pattern of red markings................................................................................................................ 21
19 Elytral intervals at base flat or only feebly swollen .............. C. mesomelas (Champion)
­ Elytral intervals at base abruptly bulbous ................................................................... 20
20 Elytra with one red band; fourth interval bulbous at base and wider than others; pronotum black…. ........................................................................ C. sanguinolentus (Olivier)
­ Elytra with two red bands; fourth and fifth intervals bulbous at base but fourth not wider than others; pronotum with some red in most specimens ..................................... ................................................................................................ C. rubrovariegatus Bovie
21 Mesosternal process at apex distinctly narrower than one­half diameter of coxa ...... 22
­ Mesosternal process at apex equal to or greater than one­half diameter of coxa........ 26
22 Elytral striae uniform, straight, not distorted by orange maculations (if maculations present); antennal scrobe with posterior edge separated from eye by no more than twice width of base of scape; inner face of front coxa lacking tubercles.................... 23
­ Elytral striae variously redirected and distorted by swellings at orange maculations (if maculations present); antennal scrobe with posterior edge distant from eye by nearly length of antennal club or more; inner face of front coxa of male with inward­pointed tubercle.........................................................................................................................24
23 Rostrum immediately in front of eye with deep, vertical groove (formed by coalescent punctures); pygidium with dense long hairs in apical one­half, along lateral margins
and along midline; form slender, pronotum longer than wide ........................................ ................................................................................ C. lingorum Anderson, new species ­ Rostrum immediately in front of eye with large, deep punctures; pygidium (except for apical fringe) with sparse, short hairs throughout; form more robust, pronotum about as long as wide .................................................... C. circumdatus (Champion), (in part)
24 Pronotum and basal portion of elytra coarsely, irregularly sculptured, rugulose, deeply coarsely punctate; pronotum with single transverse subbasal impression and two paramedian shallow, irregular impressions near midlength................................................... .................................................................................. C. dragoni Anderson, new species
­ Pronotum and elytra more or less smooth, finely evenly punctate; pronotum with only single transverse subbasal impression......................................................................... 25
25 Elytra each with colored subapical spot on third interval elongate and nearly extended to apex; humeral spot longer than adjacent spot ....................... C. sinuatus (Champion)
­ Elytra each with colored subapical spot on third interval (if present), nearly round, situated far from apex; humeral spot short, not larger than others...................................... .................................................................................................... C. ornatus (Champion)
26 Rostrum short, lower margin only three or four times longer than wide .................... 27
­ Rostrum longer, lower margin at least five times longer than wide............................ 28
27 Middle coxae separated by width of coxa; front coxae separated by width of antennal club; antennal club with apical pilose portion about one­third length of club ................ ........................................................................................... C. pulcherrimus (Champion)
­ Middle coxae separated by about one­half to two­thirds width of coxa; front coxae separated by less than width of antennal club; antennal club with apical pilose portion about one­half length of club ................................................. C. annulatus (Champion)
28 Elytra with punctures of striae large, fovea­like, deeply impressed and "pit­like", intervals and pronotum impunctate .................................................... C. fahraei (Gyllenhal)
­ Elytra with punctures of striae small to moderate, shallowly to moderately impressed, intervals finely punctate or impunctate; pronotum with punctures large, coarse and deep to small, shallow and fine ................................................................................... 29
29 Punctures of elytral striae moderate in size, distinct; intervals finely but distinctly punctate; pronotum with distinct, moderately large deep punctures........................... 30
­ Punctures of elytral striae small if present, not distinct; intervals impunctate; pronotum at most finely punctate ................................................................................................ 31
30 Elytra with bases of intervals 3­5 slightly swollen, interval 5 noticeably wider at base than throughout rest of length; pronotum with punctures large, coarse and deep, some coalescent; pygidium subcarinate towards apex ............................................................. ...................................................................... C. gasbarrinorum Anderson, new species
­ Elytra with bases of intervals 3­5 flat, more or less of same width throughout lengths; pronotum with punctures moderate, individually distinct, not coalescent; pygidium evenly convex towards apex, not at all carinate................... C. validirostris (Gyllenhal)
31 Pronotum with subbasal impression indistinct or absent; pronotum red or orange with black paramedian stripes; body size less than 8.0 mm................... C. condylus (Vaurie)
­ Pronotum with subbasal impression distinct and moderately deep; pronotum black with lateral oblique red or orange stripe or maculation, or with no red or orange markings; body size greater than 8.0 mm............................................................................ 32
32 Pronotum with distinct red or orange lateral stripes that continue posteriorly onto elytra............................................................................................................................33
­ Pronotum entirely black or black with pale red marks medially, not continuing posteriorly onto elytra ............................................................................................................ 34
33 Prosternum between coxae with distinct tubercle (males) or swelling (females); front tarsus with article 3 almost fully pilose ventrally, with at most a fine median, basal glabrous line; pronotal red or orange stripes narrow, many times longer than wide; pygidium subcarinate .................................................................. C. circumjectus (Champion)
­ Prosternum flat between coxae; front tarsus with article 3 with broad, triangular, basal glabrous area; pronotal red or orange stripes broad, about three times longer than wide; pygidium slightly, evenly convex........................ C. circumdatus (Champion), (in part)
34 Front coxae separated by slightly more than one­half width of coxa; base of elytral interval 4 swollen and directed slightly medially............................................................ ......................................................................... C. sunatoriorum Anderson, new species
­ Front coxae separated by at most about one­third width of coxa; base of elytral interval 4 flat or slightly convex, directed anteriorly ............................................................... 35
35 Male with prosternum between front coxae with distinct tubercle; pygidium with subapical swelling, apex subtruncate in lateral view; elytra with intervals 3­5 lacking series of orange dots at basal one­third ............................... C. rectistriatus (Champion)
­ Male with prosternum flat between front coxae; pygidium at most slightly evenly convex, rounded in lateral view; elytra with row of red or orange dots on intervals 3­5 at basal one­third ................................................. C. miniatopunctatus Chevrolat, (in part)
description: Published as part of Anderson, Robert S., 2002, The Dryophthoridae of Costa Rica and Panama: Checklist with keys, new synonymy and descriptions of new species of Cactophagus, Mesocordylus, Metamasius and Rhodobaenus (Coleoptera; Curculionoidea), pp. 1-94 in Zootaxa 80 on pages 23-27, DOI: 10.5281/zenodo.156033