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Figures 1–7. Mouthparts. 1 in Description of Hydrosmectomorpha Klimaszewski and Webster, a new subgenus of Atheta C. G. Thomson, with three new Canadian species (Coleoptera: Staphylinidae: Aleocharinae)

Figures 1–7. Mouthparts. 1) Clypeus of Atheta (H.) newfoundlandica. 2, 3) Mandibles of Atheta (H.) newfoundlandica. 4, 5) Mandibles of Atheta (H.) meduxnekeagensis. 6) Mentum with labial palpi and ligula. 7) Maxilla with maxillary palpus. Scale lines = 0.2 mm.

Figures 401-415. Mouthparts - mandibles. 401 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 401-415. Mouthparts - mandibles. 401, Megabaris quadriguttata; 402, Conoproctus quadripustulatus; 403, Eugeraeus sp.; 404, Lepidobaris acnisti; 405, Phacelobarus singularis; 406, Cyrtepistomus castaneus, showing difference in incisor shape to that of Baridinae s. str.; 407, Derelomus basalis; 408, Cryptorhynchus lapathi; 409, Dryophthorus americanus, showing elongate molar region; 410, Bagous transversus, showing incisors and molar region; 411, Cholus rana, showing difference in incisor shape to that of Baridinae s. str.; 412, Cossonus impressifrons; 413, Curculio pardalis, showing difference in incisor shape and molar region to those of Baridinae s. str.; 414, Hylurgops planirostris; 415, Barycerus collaris.

Figures 416-431. Mouthparts - mandibles. 416 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 416-431. Mouthparts - mandibles. 416, Testalthea sp.; 417, Rhytidoglymma aenescens; 418, Megalobaris viridana; 419, Barymerus binarius; 420, Trichodocerus sp.; 421, Coeliodes flavicaudis; 422, Mononychus vulpeculus; 423, Mecopus trilineatus; 424, Hypurus bertrandi; 425, Trigonocolus curvipes; 426, Cylindrocopturus adspersus; 427, Telephae oculata; 428, Balanogastris kolae; 429, Metialma signifera; 430, Cyllophorus fasciatus; 431, Arachnobas gazella.

Figures 345-352. Mouthparts - maxilla. 345 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 345-352. Mouthparts - maxilla. 345, Trigonocolus curvipes, showing lateral sensilla on 3rd palpal segment; 346, Mecopus trilineatus; 347, Cyllophorus fasciatus; 348, Cylindrocopturus adspersus; 349, Telephae oculata; 350, Balanogastris kolae; 351, Metialma signifera; 352, Arachnobas gazella.

Figures 299-308. Mouthparts - maxilla. 299 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 299-308. Mouthparts - maxilla. 299, Sibariops concinnus, indicating absence of large setae at antero-lateral margin of palpiger and first palpal segment; 300, Sibariops concurrens, showing triangular setae along margin of lacinia and indicating absence of large setae at antero-lateral margin of palpiger; 301, Torcus nigrinus; 302, Madopterus talpa, showing triangular setae along margin of lacinia; 303, Parallelosomus amplitarsis; 304, Orchidophilus aterrimus, showing thin, elongate setae on posterior margin of lacinia; 305, Embates chaetopus; 306, Eurhinus festivus; 307, Eurhinus aeneus; 308, Coleomerus boliviensis.

Figures 309-317. Mouthparts - maxilla. 309 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 309-317. Mouthparts - maxilla. 309, Coelonertus nigrirostris, showing large setae at antero-lateral margin of palpiger; 310, Baris torquata; 311, Cyrionyx camelus; 312, Lydamis cinnamomeus; 313, Busckiella lecythidis, showing transverse row of setae along anterior margin of palpiger; 314, Rhoptobaris canescens; 315, Plesiobaris albilata; 316, Parisoschoenus sp.; 317, Pardisomus biplagiatus, showing crescent-shaped setae along margin of galea and lacinia and dense scattering of setae along anterior margin of palpiger.

Figures 270-278. Mouthparts - maxilla. 270 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 270-278. Mouthparts - maxilla. 270, Zygobaris nitens; 271, Centrinus curvirostris; 272, Anthinobaris sp.; 273, Ovanius picipennis; 274, Nertinus suturalis; 275, Peridinetus irroratus; 276, Antesis sparsa; 277, Loboderes citriventris; 278, Loboderes citriventris, showing lateral sensilla on 3rd palpal segment.

Figures 186-194. Mouthparts. 186-187, Demoda vittata. 186 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 186-194. Mouthparts. 186-187, Demoda vittata. 186, ventral aspect of apex of rostrum, showing labium, maxilla, and mandibles; 187, enlargement of apical maxillary palpal lobes, showing lateral and apical sensilla; 188-189, Cylindrocerus comma. 188, lateral aspect of apex of rostrum; 189, enlargement of 3rd maxillary palpal lobe, showing lateral and apical sensilla; 190, Demoda vittata, labial palpus, showing apical sensilla; 191-192, Ovanius picipennis, left and right mandibles, respectively; 193-194, Zygobarella xanthoxyli, left and right mandibles, respectively.

Figures 336-344. Mouthparts - maxilla. 336 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 336-344. Mouthparts - maxilla. 336, Testalthea sp.; 337, Rhytidoglymma aenescens; 338, Megalobaris viridana; 339, Barymerus binarius; 340, Trichodocerus sp.; 341, Coeliodes flavicaudis; 342, Mononychus vulpeculus; 343, Hypurus bertrandi; 344, Trigonocolus curvipes.

Figures 368-384. Mouthparts - mandibles. 368 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 368-384. Mouthparts - mandibles. 368, Geraeus penicillus; 369, Microcholus puncticollis; 370, Linogeraeus viduatus, showing incisor and molar region on a linear mandible and naturally detached apical half of incisor; 371, Ovanius minutus; 372, Plocamus echidna; 373, Plocamus calvisetis; 374, Oligolochus bracatus, showing deep lacerations and three incisors on an angled mandible; 375, Oligolochus ornatus; 376, Odontocorynus scutellumalbum, showing two incisors and molar region on a linear mandible; 377, Odontocorynus creperus; 378, Camelodes leachii, showing two incisors and molar region on a linear mandible; 379, Sibariops concinnus; 380, Torcus nigrinus; 381, Sibariops concurrens; 382, Madopterus talpa; 383, Parallelosomus amplitarsis, showing two incisors on an angled mandible; 384, Orchidophilus aterrimus, showing three incisors on an angled mandible.

Figures 289-298. Mouthparts - maxilla. 289 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 289-298. Mouthparts - maxilla. 289, Microcholus puncticollis, showing large setae at anterolateral margin of palpiger; 290, Linogeraeus viduatus; 291, Ovanius minutus; 292, Plocamus echidna; 293, Plocamus clavisetis; 294, Oligolochus bracatus, showing teeth-like setae along margin of galea and lacinia and transverse row of setae along anterior margin of palpiger; 295, Oligolochus ornatus, showing large setae at antero-lateral margin of palpiger; 296, Odontocorynus scutellumalbum; 297, Odontocorynus creperus; 298, Camelodes leachii, indicating absence of large setae at antero-lateral margin of palpiger.

Figures 279-288. Mouthparts - maxilla. 279 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 279-288. Mouthparts - maxilla. 279, Antesis sparsa, showing large setae at antero-lateral margin of palpiger; 280, Acentrinops brevicollis; 281, Garnia sp., showing thin, elongate setae on posterior margin of lacinia; 282, Pachygeraeus laevirostris; 283, Eisonyx crassipes; 284, Dirabius calvus, showing teeth-like setae along margin of galea and lacinia; 285, Eisonyx opacus; 286, Xystus arnoldi; 287, Buchananius sulcatus (maxilla-labium complex); 288, Geraeus penicillus, showing large setae at antero-lateral margin of palpiger.

Figures 326-335. Mouthparts - maxilla. 326 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 326-335. Mouthparts - maxilla. 326, Cyrtepistomus castaneus; 327, Derelomus basalis; 328, Cryptorhynchus lapathi; 329, Cholus rana; 330, Dryophthorus americanus; 331, Bagous transversus; 332, Cossonus impressifrons; 333, Curculio pardalis; 334, Hylurgops planirostris; 335, Barycerus collaris.

Figures 353-367. Mouthparts - mandibles. 353 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 353-367. Mouthparts - mandibles. 353, Zygobaris nitens; 354, Centrinus curvirostris; 355, Anthinobaris sp., showing three incisors on mandible; 356, Ovanius picipennis; 357, Peridinetus irroratus, showing angled incisors and molar region on an angled mandible; 358, Loboderes citriventris; 359, Antesis sparsa, showing incisor and molar region on a linear mandible; 360, Acentrinops brevicollis, showing lateral laceration on incisor; 361, Garnia sp., showing mandible bearing two incisors; 362, Pachygeraeus laevirostris, showing mandible with one incisor and a molar region; 363, Eisonyx crassipes, showing angled incisors and molar region on an angled mandible; 364, Dirabius calvus; 365, Eisonyx opacus; 366, Xystus arnoldi, showing incisor and molar region on a linear mandible and lateral laceration on incisor; 367, Buchananius sulcatus, showing three incisors on mandible.

Figures 318-325. Mouthparts - maxilla. 318 in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)

Figures 318-325. Mouthparts - maxilla. 318, Pycnotheantis sp., showing thin, elongate setae on posterior margin of lacinia; 319, Telemus sp.; 320, Pteracanthus smidtii; 321, Megabaris quadriguttata; 322, Conoproctus quadripustulatus, showing crescent-shaped setae along margin of galea and lacinia and transverse row of setae along anterior margin of palpiger; 323, Eugeraeus sp., showing dense scattering of setae along anterior margin of palpiger; 324, Lepidobaris acnisti; 325, Phacelobarus singularis, showing a comparatively more compact palpus.

Figure 10. Simple setae. A in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 10. Simple setae. A, typical simple setae from the mandibular palp of Panulirus argus. No outgrowths are seen. B, terminal pore (arrow) from simple seta. C, simple setae situated on the basis of maxilla 2 of Carcinus maenas. Abbreviation: Si, simple setae.

Figure 5. Pappose setae. A in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 5. Pappose setae. A, overview of two typical pappose setae from Cherax quadricarinatus. Note random arrangement of setules. B, tips of pappose setae from Stenopus hispidus. Setules get smaller closer to the tip (arrow). C, serration on the setules (arrows) from pappose seta. D, pappose setae on the exopod of maxilliped 1 of Carcinus maenas. E, pappose setae on the mandibular palp of Ca. maenas. F, pappose setae on the coxa of maxilliped 1 of Pagurus bernhardus. Abbreviation: Pa, pappose setae.

Figure 4 in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 4. Substructures of setae. A, infracuticular articulation with the general cuticle. Arrow indicates deep socket. B, supracuticular articulation (arrows) with the general cuticle. C, annulus seen as a ring in the cuticle (arrow). D, two rows of denticles arranged distally on a seta. E, large setule displaying articulation (arrow) with setal shaft. F, small setule with weak articulation (arrows). G, stitched picture showing gradual change from setule (arrow) to denticle (arrowhead) on the same seta. H, subterminal pore (arrow) from seta with denticles. I, terminal pore (arrow) from seta with denticles.

Figure 7. Serrulate setae. A, typical serrulate setae from maxilliped 1 in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 7. Serrulate setae. A, typical serrulate setae from maxilliped 1 of Pagurus bernhardus. Setules are small and only present on the distal half of the seta. B, middle part of serrulate seta with setules in three rows. C, setules from serrulate seta arranged randomly along the shaft. Note strong serration. D, small setules with weak articulations (arrows). E, scalelike setules from serrulate seta of Palaemon adspersus. Note serration on distal rim (arrows). F, terminal pore (arrow) from serrulate seta. G, serrulate setae on the coxa of maxilla 1 of Penaeus monodon. Abbreviation: Su, serrulate setae.

Figure 9. Papposerrate setae. A, typical papposerrate seta from maxilliped 1 in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 9. Papposerrate setae. A, typical papposerrate seta from maxilliped 1 of Cherax quadricarinatus, with long, randomly arranged setules on proximal part and denticles in two rows on distal part. B, transition region between long setules and denticles. Abbreviations: D, denticles; LS, long setules; SS, short setules.