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. 2013 Aug 9:(322):1-170.
doi: 10.3897/zookeys.322.5492. eCollection 2013.

The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Tahiti, Society Islands

James K Liebherr  1
Affiliations

The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Tahiti, Society Islands

James K Liebherr. Zookeys. .

Abstract

The 101 species of Mecyclothorax Sharp known to inhabit Tahiti Island, French Polynesia are taxonomically revised, including 28 species that are newly described: Mecyclothorax claridgeiae sp. n., Mecyclothorax jeanyvesi sp. n., Mecyclothorax poria sp. n., Mecyclothorax aano sp. n., Mecyclothorax papau sp. n., Mecyclothorax manina sp. n., Mecyclothorax everardi sp. n., Mecyclothorax ramagei sp. n., Mecyclothorax pitohitiensis sp. n., Mecyclothorax curtisi sp. n., Mecyclothorax hoeahiti sp. n., Mecyclothorax ninamu sp. n., Mecyclothorax kokone sp. n., Mecyclothorax paahonu sp. n., Mecyclothorax kayballae sp. n., Mecyclothorax ehu sp. n., Mecyclothorax papuhiti sp. n., Mecyclothorax tuea sp. n., Mecyclothorax taatitore sp. n., Mecyclothorax konemata sp. n., Mecyclothorax arboricola sp. n., Mecyclothorax rahimata sp. n., M. oaoa sp. n., Mecyclothorax maninapopoti sp. n., Mecyclothorax hunapopoti sp. n., Mecyclothorax fefemata sp. n., Mecyclothorax maninamata sp. n., and Mecyclothorax niho sp. n. Mecyclothorax muriauxioides Perrault, 1984 is newly synonymized with Mecyclothorax muriauxi Perrault, 1978. Lectotypes are designated for: Thriscothorax altiusculus Britton, 1938; Thriscothorax bryobius Britton, 1938; Mecyclothorax globosus Britton, 1948: and Mecyclothorax sabulicola Britton, 1948. Dichotomous identification keys augmented by dorsal habitus and male aedeagal photographs are provided to the various species-groups and all included species. The spermatophore of Mecyclothorax papau sp. n. is described, with the ampulla and collar found to correspond dimensionally to the length of the internal sac flagellar plate. Variation among characters of the female reproductive tract is presented for all newly described plus other representative species comprising the radiation. Taxa are assigned to species groups, modified from the classification of G.G. Perrault, based on derived character states polarized using the Australian outgroup taxon Mecyclothorax punctipennis (MacLeay). Much of the species-level diversity on this small Pacific island is partitioned allopatrically over very small distributional ranges. No species is shared between Tahiti Nui and Tahiti Iti, and nearly all species in Tahiti Nui are geographically restricted to one ridgelike massif of that volcano. Cladistically similar species are often distributed on different massifs suggesting that vicariance associated with erosional valley formation has facilitated speciation, however several instances in which sister species occupy sympatric distributions on the same ridge system demonstrate that speciation may also occur across extremely localized landscapes. Such localized differentiation is facilitated by the low vagility of these small-bodied, flightless predators whose fragmented populations can persist and diverge within spatially limited habitat patches. The intense philopatry of Tahitian Mecyclothorax spp. coupled with the highly dissected landscape has produced the geographically densest adaptive radiation on Earth. This radiation has occurred very rapidly, with species durations averaging 300,000 yr; a speciation rate similar to that observed in Hawaiian Oliarus planthoppers and Laupala crickets, and East African Rift lake cichlid fishes.

Keywords: Allopatric speciation; biodiversity; biogeography; genitalic evolution; revisionary systematics.

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Figures

Figure 1.
Figure 1.
Massifs of the Tahiti Nui and Tahiti Iti volcanoes from which Mecyclothorax specimens have been collected (redrawn and amended from Perrault 1992). Dashed lines indicate lowland valleys and associated headlands below 1000 m elevation that separate the major massifs. Spellings and names for localities conform to I.G.N. (1994). The summit in Tahiti Iti that has been sampled for Mecyclothorax has been variously named Mont Atara (Perrault 1989, 1992), or Teatara (I.G.N. 1994; R.G.P.F. 2001), the latter official name used herein. Massifs not yet sampled for Mecyclothorax but certainly housing species of the genus include Mont Aramaoro (1), Monts Ivirairai plus Iviroa (2), Mont Tetufera (3), and Mont Urufa (4).
Figure 2.
Figure 2.
Head, pronotum, and elytra of Mecyclothorax wallisi with setae labeled: head, ms mandibular scrobe seta aso anterior supraorbital seta pso posterior supraorbital seta; pronotum lp lateral pronotal seta bp basal pronotal seta; elytra ade anterior dorsal elytral seta pde posterior dorsal elytral seta ale anterior series of lateral elytral setae ple posterior series of lateral elytral setae psc parascutallar seta sae subapical elytral seta ae apical elytral seta.
Figure 3.
Figure 3.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax striatopunctatus paratype (MNHN) (apex of dissection damaged and lost; apex depicted by detail drawing [Perrault 1986, fig. 23]) B Mecyclothorax bougainvillei holotype C Mecyclothorax mahina holotype D Mecyclothorax poria holotype E Mecyclothorax villiersi F Mecyclothorax taatitore paratype (CUIC) G Mecyclothorax pirihao paratype (CUIC) H Mecyclothorax bryobioides Abbreviations: at apical tooth dop dorsal ostial microtrichial patch fp flagellar plate lp left paramere oc ostial canal pa parameral articulation rp right paramere vop ventral ostial microtrichial patch.
Figure 4.
Figure 4.
Spermatophore from male specimen of Mecyclothorax papau A spermatophore extended from ostium of uneverted male aedeagus; spicules to left of spermatophore stem form ventral ostial microtrichial patch (Fig. 24A) B spermatophore, Mecyclothorax papau, after extraction from male aedeagal median lobe ostial opening; scale bar 0.5 mm Abreviations: a ampulla c collar s stem.
Figure 5.
Figure 5.
Female reproductive tract dissections, Mecyclothorax spp., ventral view; scale bars 0.5 mm A Mecyclothorax wallisi B Mecyclothorax altiusculus C Mecyclothorax altiusculoides D Mecyclothorax marau; spermathecal gland reservoir broken off of dissection Abbreviations: bc bursa copulatrix co common oviduct gc1 basal gonocoxite 1 sg spermathecal gland sp spermatheca v vagina. Position of spermathecal duct and juncture of duct with dorsal wall of bursa indicated by black line and terminal circle, respectively.
Figure 6.
Figure 6.
Female reproductive tract dissections, Mecyclothorax spp., ventral view; scale bars 0.5 mm A Mecyclothorax kayballae B Mecyclothorax gourvesi; spermathecal gland reservoir broken off of dissection Abbreviations as in Fig. 5. Position of spermathecal duct and juncture of duct with dorsal wall of bursa indicated by black line and terminal circle respectively.
Figure 7.
Figure 7.
Female reproductive tract dissections, Mecyclothorax spp., ventral view; scale bars 0.5 mm A Mecyclothorax arboricola paratype (CUIC) B Mecyclothorax globosoides C Mecyclothorax globosus D Mecyclothorax paraglobosus Abbreviations as in Fig. 5; dgr defensive gland reservoir. Position of spermathecal duct and juncture of duct with dorsal wall of bursa indicated by black line and terminal circle respectively.
Figure 8.
Figure 8.
Female right gonocoxae, Mecyclothorax spp., ventral view, scale bars 0.1 mm A Mecyclothorax wallisi B Mecyclothorax poria C Mecyclothorax altiusculus D Mecyclothorax everardi paratype (CUIC) E Mecyclothorax pitohitiensis paratype (CUIC) F Mecyclothorax hoeahiti paratype (CUIC) Abbreviations: afs apical fringe setae ans apical nematiform setae des dorsal ensiform seta gc1 basal gonocoxite 1 gc2 apical gonocoxite 2 les lateral ensiform setae ms mesal setae of gonocoxite 1 r ramus
Figure 9.
Figure 9.
Female right gonocoxae, Mecyclothorax spp., ventral view, scale bars 0.1 mm A Mecyclothorax ninamu paratype (CUIC) B Mecyclothorax kokone paratype (CUIC) C Mecyclothorax kayballae paratype (CUIC) D Mecyclothorax ehu paratype (CUIC) E Mecyclothorax taatitore paratype (CUIC) F Mecyclothorax arboricola paratype (CUIC) G Mecyclothorax fefemata paratype (CUIC) H Mecyclothorax maninamata holotype. Abbreviations as in Fig. 8.
Figure 10.
Figure 10.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (WXYZ) at lower right of each figure denotes number of supraorbital setae each side (W), number of pronotal setae each side (X), number of dorsal elytral setae each elytron (Y), and number of apical setae each elytron (Z) A Mecyclothorax claridgeiae holotype female B Mecyclothorax subquadratus holotype female C Mecyclothorax muriauxi holotype male D Mecyclothorax mahina holotype male
Figure 11.
Figure 11.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax obtusus holotype female B Mecyclothorax gerardi C Mecyclothorax jeanyvesi holotype female D Mecyclothorax poria holotype male.
Figure 12.
Figure 12.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax mapura holotype male B Mecyclothorax brevipennis C Mecyclothorax quadraticollis holotype female.
Figure 13.
Figure 13.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax muriauxi holotype B Mecyclothorax gerardi, internal sac everted C Mecyclothorax poria paratype (NMNH) D Mecyclothorax mapura holotype E Mecyclothorax fosbergi holotype F Mecyclothorax fosbergioides (EMEC), internal sac everted Abbreviations: fp flagellar plate gp gonopore lp left paramere oc ostial canal rp right paramere vop ventral ostial microtrichial patch.
Figure 14.
Figure 14.
Female reproductive tract dissections, Mecyclothorax spp., ventral view; scale bars 0.5 mm A Mecyclothorax poria paratype (CUIC) B Mecyclothorax everardi paratype (CUIC) C Mecyclothorax pitohitiensis paratype (CUIC) D Mecyclothorax hoeahiti paratype (CUIC) Abbreviations: bc bursa copulatrix co common oviduct dgr defensive gland reservoir gc1 basal gonocoxite 1 sg spermathecal gland sp spermatheca v vagina. Position of spermathecal duct and juncture of duct with dorsal wall of bursa indicated by black line and terminal circle, respectively.
Figure 15.
Figure 15.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax fosbergi holotype male (BPBM) B Mecyclothorax fosbergioides male (EMEC).
Figure 16.
Figure 16.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax jarrigei paratype female (NHMB) B Mecyclothorax aano holotype male C Mecyclothorax hamatus D Mecyclothorax altiusculoides
Figure 17.
Figure 17.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax tuberculatus holotype female B Mecyclothorax paraltiusculus C Mecyclothorax pseudaltiusculus D Mecyclothorax altiusculus
Figure 18.
Figure 18.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax jarrigei, teneral, Pito Hiti, 2000 m el. (EMEC) B Mecyclothorax aano holotype C Mecyclothorax aano holotype, internal sac everted D Mecyclothorax hamatus E Mecyclothorax altiusculoides F Mecyclothorax paraltiusculus G Mecyclothorax pseudaltiusculus, teneralAbbreviations: dop dorsal ostial microtrichial patch fp flagellar plate gp gonopore oc ostial canal vop ventral ostial microtrichial patch.
Figure 19.
Figure 19.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax altiusculus B Mecyclothorax ovalipennis C Mecyclothorax parovalipennis D Mecyclothorax tihotii holotype E Mecyclothorax bryobius lectotype (BPBM), aedeagus mounted in Canada balsam F Mecyclothorax ballioides G Mecyclothorax ferruginosus holotype, teneral oc ostial canal fp flagellar plate.
Figure 20.
Figure 20.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax ovalipennis B Mecyclothorax parovalipennis holotype male C Mecyclothorax tihotii holotype male D Mecyclothorax bryobioides.
Figure 21.
Figure 21.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax bryobius paratype female (MNHN) B Mecyclothorax ballioides C Mecyclothorax ferruginosus holotype male D Mecyclothorax sinuatus holotype female.
Figure 22.
Figure 22.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax papau holotype male B Mecyclothorax manina holotype female C Mecyclothorax everardi paratype male (CUIC) D Mecyclothorax brittoni paratype male (NHMB) E Mecyclothorax ramagei allotype female.
Figure 23.
Figure 23.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax tahitiensis holotype male, 1800 m el. B Mecyclothorax tahitiensis male (FMNH), 2100 m el. C Mecyclothorax pitohitiensis paratype male (CUIC) D Mecyclothorax teatara.
Figure 24.
Figure 24.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax papau holotype, internal sac everted B Mecyclothorax everardi paratype (CUIC) C Mecyclothorax brittoni paratype (MHNB) D Mecyclothorax ramagei holotype E Mecyclothorax tahitiensis F Mecyclothorax pitohitiensis paratype (CUIC), internal sac everted G Mecyclothorax teatara Abbreviations: af apical face dop dorsal ostial microtrichial patch fp flagellar plate gp gonopore oc ostial canal rp right paramere vop ventral ostial microtrichial patch.
Figure 25.
Figure 25.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax fairmairei holotype male B Mecyclothorax tutei holotype female C Mecyclothorax aorai D Mecyclothorax cooki
Figure 26.
Figure 26.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax marau B Mecyclothorax dannieae paratype male (MHNB) C Mecyclothorax villiersi D Mecyclothorax negrei paratype male (MNHN).
Figure 27.
Figure 27.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax fairmairei holotype, teneral B Mecyclothorax aorai C Mecyclothorax marau D Mecyclothorax dannieae paratype (MNHN) E Mecyclothorax villiersi, internal sac everted F Mecyclothorax negrei holotype G Mecyclothorax curtisi holotype Abbreviations: af apical face dop dorsal ostial microtrichial patch fp flagellar plate iss internal sac spicule lp left paramere oc ostial canal rp right paramere vop ventral ostial microtrichial patch.
Figure 28.
Figure 28.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax striatopunctatus holotype male B Mecyclothorax wallisi C Mecyclothorax curtisi holotype male D Mecyclothorax bougainvillei holotype male.
Figure 29.
Figure 29.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax pomarei holotype male B Mecyclothorax marginatus paratype male (MNHN) C Mecyclothorax hoeahiti paratype female (CUIC).
Figure 30.
Figure 30.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax marginatus paratype (MHNB) B Mecyclothorax hoeahiti paratype (CUIC) C Mecyclothorax ninamu paratype (CUIC) D Mecyclothorax viridis E Mecyclothorax castaneus F Mecyclothorax kayballae paratype (CUIC) G Mecyclothorax balli paratype (MNHN) H Mecyclothorax ata holotype I Mecyclothorax ehu paratype (CUIC) J Mecyclothorax ehu paratype (CUIC), internal sac everted Abbreviations: af apical face fp flagellar plate gp gonopore lp left paramere oc ostial canal rp right paramere vop ventral ostial microtrichial patch.
Figure 31.
Figure 31.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax ninamu paratype male (CUIC) B Mecyclothorax viridisi paratype male (MNHN) C Mecyclothorax kokone holotype female D Mecyclothorax castaneus E Mecyclothorax paahonu holotype female.
Figure 32.
Figure 32.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax kayballae paratype male (CUIC)B Mecyclothorax balli paratype male (MNHN) C Mecyclothorax putaputa paratype female (CUIC) D Mecyclothorax ata holotype male E Mecyclothorax ehu paratype male (CUIC)
Figure 33.
Figure 33.
Female reproductive tract dissections, Mecyclothorax spp., ventral view; scale bars 0.5 mm A Mecyclothorax ninamu paratype (CUIC); spermatheca and spermathecal gland broken off dissection B Mecyclothorax kokone paratype (CUIC) C Mecyclothorax ehu paratype (CUIC) D Mecyclothorax taatitore paratype (CUIC) Abbreviations: bc bursa copulatrix co common oviduct gc1 basal gonocoxite 1 sg spermathecal gland sp spermatheca sp* spermatheca, reservoir detached v vagina. Position of spermathecal duct and juncture of duct with dorsal wall of bursa indicated by black line and terminal circle, respectively.
Figure 34.
Figure 34.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax zimmermani holotype male (BPBM) B Mecyclothorax acutangulus holotype male.
Figure 35.
Figure 35.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax papuhiti holotype male B Mecyclothorax gourvesioides paratype male (MNHN) C Mecyclothorax gourvesi, Marau, 1125 m el. D Mecyclothorax gourvesi, Marau, 1335 m el.
Figure 36.
Figure 36.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax zimmermani holotype B Mecyclothorax acutangulus holotype C Mecyclothorax papuhiti holotype D Mecyclothorax gourvesioides paratype (MNHN) E Mecyclothorax gourvesi, Marau F Mecyclothorax gourvesi, Marau G Mecyclothorax gourvesi, Marau, internal sac everted H Mecyclothorax gourvesi, Aorai, internal sac everted I Mecyclothorax gourvesi, Aorai, teneral Abbreviations: af apical face dop dorsal ostial microtrichial patch fp flagellar plate gp gonopore oc ostial canal vop ventral ostial microtrichial patch
Figure 37.
Figure 37.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax tuea holotype female B Mecyclothorax taatitore paratype male (CUIC) C Mecyclothorax georgettae paratype female (MNHN) D Mecyclothorax konemata holotype female
Figure 38.
Figure 38.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax cupripennis B Mecyclothorax profondestriatus holotype male C Mecyclothorax vaifaufa holotype male.
Figure 39.
Figure 39.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax arboricola holotype male B Mecyclothorax sabulicola lectotype male (BPBM) C Mecyclothorax taiarapu D Mecyclothorax ataraensis holotype female.
Figure 40.
Figure 40.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax taatitore paratype (CUIC) B Mecyclothorax taatitore paratype (CUIC), internal sac everted C Mecyclothorax cupripennis D Mecyclothorax profondestriatus holotype E Mecyclothorax vaifaufa holotype F Mecyclothorax arboricola paratype (CUIC) G Mecyclothorax sabulicola lectotype (BPBM) Abbreviations: af apical face dop dorsal ostial microtrichial patch fp flagellar plate oc ostial canal spd sperm duct vop ventral ostial microtrichial patch.
Figure 41.
Figure 41.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax rahimata holotype male B Mecyclothorax popotioaoa holotype male, Mont Tohiea, Moorea C Mecyclothorax anaana paratype male (CUIC) D Mecyclothorax hemisphaericus
Figure 42.
Figure 42.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax oaoa holotype female B Mecyclothorax maninapopoti holotype female C Mecyclothorax hunapopoti holotype female D Mecyclothorax fefemata holotype male.
Figure 43.
Figure 43.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm B Mecyclothorax rahimata holotype B Mecyclothorax anaana paratype (CUIC) C Mecyclothorax hemisphaericus D Mecyclothorax fefemata paratype (CUIC), internal sac everted E Mecyclothorax globosoides Abbreviations: dop dorsal ostial microtrichial patch fp flagellar plate lp left paramere oc ostial canal rp right paramere vop ventral ostial microtrichial patch.
Figure 44.
Figure 44.
Female reproductive tract dissections, Mecyclothorax spp., ventral view; scale bars 0.5 mm A Mecyclothorax fefemata paratype (CUIC) B Mecyclothorax maninamata holotype Abbreviations: bc bursa copulatrix co common oviduct gc1 basal gonocoxite 1 re rectal pads sg spermathecal gland sp spermatheca v vagina. Position of spermathecal duct and juncture of duct with dorsal wall of bursa indicated by black line and terminal circle, respectively.
Figure 45.
Figure 45.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax maninamata holotype female B Mecyclothorax globosoides C Mecyclothorax niho holotype female D Mecyclothorax toretore holotype female.
Figure 46.
Figure 46.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax fuscus paratype female (MNHN) B Mecyclothorax globosus, Marau (setal formula 1111 very rare) C Mecyclothorax paraglobosus D Mecyclothorax cupreus paratype female (MNHN).
Figure 47.
Figure 47.
Male aedeagal median lobe and associated parameres, Mecyclothorax spp., right lateral view; scale bars 0.5 mm A Mecyclothorax globosus, Marau B Mecyclothorax globosus, Marau C Mecyclothorax globosus, Aorai D Mecyclothorax paraglobosus, internal sac everted E Mecyclothorax cupreus, internal sac everted F Mecyclothorax pirihao paratype (CUIC) G Mecyclothorax spinosus paratype (MHNB) H Mecyclothorax cupreoides paratype (MHNB), interal sac everted I Mecyclothorax laevilateralis Abbreviations: af apical face dop dorsal ostial microtrichial patch fp flagellar plate oc ostial canal vop ventral ostial microtrichial patch.
Figure 48.
Figure 48.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax externestriatus teneral female B Mecyclothorax pirihao paratype male (CUIC) C Mecyclothorax spinosus paratype female (MNHN) D Mecyclothorax poro holotype female.
Figure 49.
Figure 49.
Mecyclothorax spp., dorsal view; scale bars 1.0 mm; setal formula (see Fig. 10) at lower right of each figure A Mecyclothorax angulosus teneral female B Mecyclothorax cupreoides paratype male (MHNB) C Mecyclothorax laevilateralis D Mecyclothorax globulosus allotype female
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