Lamyctes adisi n. sp., a terricolous non-migrant species with a dormant submerged egg stage, is described from a blackwater inundation forest in the valley of Rio Negro, environs of Manaus, Central Amazonia, Brazil. The cosmopolitan Lamyctes fulvicornis MEINERT, 1868, reported from a non-flooded area at Manaus for the first time, is redescribed

Zalesskaja, N.

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AMAZOMANA Xxt(1/2): 59 - 64 Kiel, Dezember 1994The centipede genus Lamyctes MEINERT, 1868, in the environs ofManaus, Central Amazonia, Brazil (Chilopoda, Lithobiomorpha,Henicopidae)byNadezhda T. ZalesskajaDr. Nadezhda T. Zalesskaja, Institute of Evolutionary Morphology and Ecology ofAnimals, Russian Academy of Sciences, 33 Leninsky prospekt, 117011Moscow V-71,Russia.(Accepted for publication: April, 1994).AbstractLamyctes adisi n. sp., a terricolous non-migrant species with a dormant submerged egg stage, isdescribed from a blackwater inundation forest in the valley of Rio Negro, environs of Manaus, CentralAmazonia, Brazil. The cosmopolitan Lamyctes Julvicornis MEINERT, 1868, reported from a non-floodedarea at Manaus for the first time, is redescribed.Keywords: Chilopoda, Lithobiomorpha, Henicopidae, Lamyctes, Amazon, inundation forests.ResumoLamyctes adisi n. sp., uma espécie terrícola não migrante com um estágio de ovo dormentesubmergido, é descrita de unla floresta inundável de água prêta no vale do Rio Negro, nos arredores deManaus, Amazônia Central, Brasil. Além disso é redescrito o sinantrírpico cosmopolita Lamyctesfulvicornis MEINERT, l8ó8, relatado pela primeira vez de uma área não inunda{a {e Manaus.ISSN 0065-67551199410591 @ MPI für Limnologie, AG Tropen(rkologie, Ptiin; INPA, Manauss9IntroductionThe centipede genus Lamyctes MEINERT, 1868, is nearly cosmopolitan in distribu-tion, altogether encompassing several dozen species. V/ithin the Neotropical realmalone, this genus comprises over 20 nominate species or subspecies. Most of thesespecies have been described from Peru, Chile, and Bolivia, being largely encounteredin forest litter and in the soil (CHAMBERLIN 1944, 1956, 1957; KRAUS 1954, 1951).Yet the taxonomy of the genus is far from satisfactory, requiring a lot of revisionarywork, and many characters used to separate species of Lamyctes may prove to beintraspecifically variable and of limited taxonomic value.The present paper does not aim at such a revision. It puts on record another distinc-tive congener deriving from an inundation forest in the environs of, as well as a cosmo-politan from a non-flooded area at, Manaus, Central Amazonia, Brazil. This contributionmakes part of a long-term project aimed at revealing the survival strategies of variousarthropod groups in the extreme conditions of Amazonian inundation forests (seereviews by ADIS l992a,b).Except for a single paratype retained in the author's collection (CZ), all type materi-al has been housed in the Instituto Nacional de Pesquisas da Amazônia, Manaus(rNPA).SystematicsLamyctes adlsl n. sp. (Figs. l-5)Holotype: I (INPA), Brazil, Edo. Amazônas, environs of Manaus, igapó of Rio Tarumã Mirím (=blackwater inundation forest), ca. 20 km NW of Manaus, affluent of Rio Negro, 60'17'W, 3'2'S,17.11.1976: leg. J. ADIS. -Paratypes: I (INPA), same data,24.lll.1977. - I (INPA), same data,3.II.1976. - I (INPA), samedara,20.X.1976. - I (CZ), same data, 27.X.1976; all leg. J. ADIS.Other material: Several larvae of various ìnstars, taken in 1975-1976, deposited in INPA.Etymology: Honours PD Dr. Joachim ADIS, the collector of this fascinating species.Diagnosis: Differs from congeners by relatively small body size (representing one of the smallestLamyctes sp.) combined with the spiniform porodonts, antennae composed of 30-36, mostly 35segments, etc. (see also Tab. l).Description of holotype: Length 6.9, width 0.7 mm. Coloration uniform dull yellowish-brownish.Cephalic shield subequal in length and width (Fig. 1), 1.2 times as wide as tergite 1. One small,depigmented ocellus on each side of head. Tömösváry organ present, small, inconspicuous. Antennaewith 36 stout segments, length ca. 5 times as long as head capsule and 0.63 times as long as entirebody with head. Forcipular coxostemite broad, I .8 times broader than long, with 2+2 rather big, pointedteeth and l+l small spiniform porodonts (P) at external corners of dental edge, both porodonts beingwell-removed from bigger neighboring teeth (T), and their tips failing to reach the base ofbigger teeth(Fig. 2). Lateral sides of coxosternite rather moderately sloping behind porodonts, forming an obtuseangle of ca. 104". Median notch broad (distance between bases of bigger paramedian teeth being 1.75times as great as distance between tips of both bigger teeth on each side), obtusangular (ca. 100'),about twice as deep as median tooth length. All terga without posterior projections.Tarsi 1-12 one-segmented, tarsi 13-15 two-segmented. Tibial process present on legpairs l-13. Anallegs a bit shorter than antennae, 0.55 times as long as body with head. Anal claw with two accessory60apical claws, with a basal seta between them about a half the length of either. Length ratios of analtibia, tarsus l, and tarsus 2 as l:0.9:0.8; anal tibia 4.6 times, tarsus I ca. l0 times, tarsus 2 ca. 9.6 timesas long as broad.Coxal pores on coxae 12-15, larye, rounded, formula 2(3),2,3, 3. Gonopods as typical for thegenus: 2+2 spurs (each spur 2.5 times longer than wide) and simple claws (Fig. 3).Notes: Paratypes can somewhat differ from the holotype in the following details. Antennal segmentsare usually 35, the variation range being from 30 to 36. The distance between the porodonts and theneighboring bigger tooth is sometimes larger than in the holotype (Fig.  ). The coxal pore formula canV.2-3,2-3,2-4,3-4, more commonly 2,2,2,3 or 3,3,3,3. In two paratypes, one of the gonopodssupports three spurs (Fig. 5).This new species seems to be most closely related to L. andinus KRAUS, 1954, and L. taulisensísKRAUS, 1954, both from Peru. However, they all can be separated by some characters given in Tab. LTable 1:Diagnostic features of L. adisi in relation to its immediate alliesCharacter/species L. adisi L. andinus L. taulisensisBody length, mmNumber of antennomeresForcipular teethPorodontsAngle betweenforcipularcoxostemal sidesTibial processpresent on legpairs6.930-36(3s)2+2l+1(spiniform)I 04- r 06't430-322+2(t+l )(vague knobs)95-t 10"t-14ll383+3absent100"t-t3 l-13Ecological and biological observations on this presumably parthenogenetic species, refened to asLamyctes sp., can be found in ADIS (1992a, b). This is a terricolous non-migrant species with adormant submerged egg stage.Lamyctes fulvic<.¡r¡is MEINERT, l8ó8 (Figs. 6-8)Material: 26 I QNPA), 4I (CZ), Brazil, Edo. Amazônas, Manaus-Adrianópolis, 60't'W, 3"8'S,garden litter, 29.II.1988; leg. Bethania ADIS.Redescription: Length 7.5, width L0 mm. Coloration of head capsule and tergite I blackish-brown;ocelli strongly pigmented due to retina; other tergites brown, growing gradually a bit paler towardmidbody; lateral and caudal margins of all tergites darkened; a distinct axial stripe on all tergites;antennae and forceps amber yellow, antennomere I and proximal half of antennomere 2 dark brown;stemites and legs grey-yellowish, distal half of femora darkened; legpairs I 4- I 5 annulated in appearance6tsternites and legs grey-yellowish, distal half of femora darkened; legpairs I 4- l 5 annulated in appearancedue to paler proximal parts of prefemur, femur, and tibia as well as to pale tarsi except for a somewhatdarkened proximal part of tarsus 1; a pale yellowish, ocellus-like spot just behind ocellus.Cephalic shield only slightly broadened, 1.8 times as broad as tergite l. One big, strongly pigment-ed ocellus on each síde of head. Tömösváry organ present, rather evident (Fig. 6). Antennae with 27small segments, relatively short, only 0.4 times as long as entire body with head. Forcipularcoxosternite 1.5 times broader than long, with2+2 moderately big, pointed teeth and 1+l rather small,spiniform porodonts @) at humeri of dental edge (Fig. 7). Lateral sides of coxostemite mcre stronglysloping behind porodonts, forming an acute angle of ca.77". Median notch broad (distance betweenbases of bigger paramedian teeth being 1 .4 times as great as distance between tips of both bigger teethon each side), acutangular (ca. 55'), ca. 3.3 times as deep as median tooth length. All terga withoutposterior projections.Tarsi l-12 one-segmented, tarsi l3-15 two-segmented. Tibial process present on legpairs l-12. Anallegs 1.2 times as long as antennae,0.48 times as long as body with head. All claws with two accessoryapical claws, only legpairs 14-15 without basal seta between them. Frontal accessory claw on legpair15 ca.0.37 times, caudal accessory claw ca. 0.3 times as long as claw proper; basal seta on legpair 13about half as long as claw proper. Length ratios of anal tibia, tarsus I , and tarsus 2 as 1: I :0.8; anal tibia6.3 times, tarsus I ca. 12 times, ta¡sus 2 ca. 13 times as long as broad.Coxal pores on coxae l2-15, large, rounded, formula 3,3,3,3 To 4, 4, 4,4, sometimes even 3, 4,4, 4 on one body side and 3, 3, 3,3 on the other. Gonopods with 2+2 equal spurs (each spur ca. 2.0times longerthan width), simple claws (Fig.8). Gonopod segment 1 with ll-12 ventral setae, segment2 with five long ventral and two small dorsal setae (DS), claw with two long ventral setae and twosmall dorsal spinicles (DSP).Remarks: The above redescription provides some new insight into the va¡iation range of L.fulvicornis, a largely synanthropic, subcosmopolitan species obviously represented at Manaus (on non-flooded tenains only?) solely by parthenögenetic populations as well. In addition, it allows a secureseparation of the two more or less sympatric congeners in the area concerned. Also the fact deservesspecial attention that the anal tibia is 6.3 times, tarsus I ca. 12 times, tarsus 2 ca. 13 times as long asbroad, this being unusually siender for European L. fulvicornis, especially tarsi I and 2.AcknowledgmentsI am most grateful to PD Dr. J. Adis who placed his valuable material at my disposal. Dr. S.Golovatch (Moscow) kindly checked the English of an earlier draft, whereas both hof. A. Minelli (Padova,Italy) and Dr. E.H. Eason (Moreton-in-Marsh, U.K.) have provided both constructive criticism andlinguistic corrections. This paper has been supported in part by Mr. G. Soros' International ScienceFoundation, Biodiversity Pr<rject. The field-work in Brazil has been carried out in co-operation with theINPA, Manaus.ReferencesADIS, J. (1992a): How to survive six months in a flooded soil: strategies in Chilopoda and Symphyla fromCentral Amazonian floodplains. - Stud. Neotrop. Fauna Environment27(2-3)'. 117-129.ADIS, J. (1992b): Ûberlebensstrategien terrestrischer lnvertebraten in Ûberschwemmungswäldem7nn$alamaz<lniens. - Verh. naturwiss. Ver. Hamburg 33 (N.F.): 2l-l14.CHAMBERLIN, R.V. (1944): Chilopods in the collections of Field Museum of Natural History. - FieldMus. Nat. Hist. Zool. Ser. 28(4): 175-216.62CHAMBERLIN, R.V. (195ó): The Chilopoda of the Lund University and California Academy of ScienceExpedition. Reports of Lund University Chile Expedition 1949-49. - Lunds Univ. Årsskr., N.F., Avd.2,51(5): l-61.CHAMBERLIN, R.V. (1957): A new henicopid chilopod fronr Peru. - Ent. News 68(5): l2ó-127.KRAUS, O. (1954): Myriapoden aus Peru, I: Chilopoda. - Senckenberg. biol.3.l(4-6): 3ll-323.KRAUS, O. (1957): ìv{yriapoden aus Peru, VI: Chilopoden. - Senckenberg. biol.38(5-6): 359-404.63106jtI2,/ 00 //I4 \35DSPTOo )DS677P"rJ þ58J JJ7Figs. l-8:Lamyctes adisi n. sp. ( I -5), I holotype (.1 -3) & paratype (4-5), and Lamyctes fulvicornis MEINERT. I 8ó8,I (6-8).I & 6: head capsule; 2, 4 & 7: dental edge of forcipular coxosternum; 3, 5 & 8: gonopods.Iù64

The centipede genus Lamyctes MEINERT, 1868, in the environs of Manaus, Central Amazonia, Brazil (Chilopoda, Lithobiomorpha, Henicopidae)

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