Camptomorpha Silvestri, 1897

Golovatch, Sergei I. & Bouzan, Rodrigo S., 2025, Review of the South American millipede genus Camptomorpha Sivestri, 1897, with the description of a new species from Peru (Diplopoda: Polydesmida: Chelodesmidae), Arthropoda Selecta 34 (1), pp. 1-15 : 2

Genus Camptomorpha Silvestri, 1897

Camptomorpha Silvestri, 1897a: 10 , originally proposed invalidly for two species; Brölemann, 1916: 552; Attems, 1931: 44; 1938: 69; Hoffman, 1953: 120, clarification of the genus and tYpe species identitY; 1975: 185, assignment to Lepturodesmini ; 1980: 152; Schubart, 1955: 508; Jeekel, 1971: 252; Bouzan et al., 2018: 11 .

Type species: C. dOrsAlis Silvestri, 1897a: 10 , by subsequent designation of Attems [1931: 44].

Genus feminine in gender [ Jeekel, 1971], even though sometimes erroneously treated as masculine.

Number of species: 11 described, one new treated below, and several more still undescribed.

= PHAntAsmOdesmus Verhoeff, 1927: 509 , introduced as a subgenus of Leptodesmus , synonymized with Leptodesmus by Attems, 1938: 6, synonymized under Camptomorpha bY Hoffman, 1953: 120, listed as a generic sYnonYm bY Hoffman, 1980: 152; Kraus, 1956: 142; Jeekel, 1971: 279.

Type species: LeptOdesmus pulvillAtus Attems, 1898: 391 , by monotypy.

= Eucampesmus Chamberlin, 1941: 489 , synonymized with PHAntasmodesmus by Kraus, 1956: 141, synonymized with Camptomorpha bY Hoffman, 1953: 120, listed as a generic sYnonYm bY Hoffman, 1980: 152; Jeekel, 1971: 262.

Type species: EucAmpesmus Orites Chamberlin, 1941: 489 , by original designation.

= Ptyxesmus Chamberlin, 1941: 489 , syn.n., after Hoffman [in litt.].

Type species: Ptyxesmus atyphus Chamberlin, 1941: 489 , by original designation.

DIAGNOSIS. A genus of Lepturodesmini with ♂ coxae 3 usually produced or lobed mesad, almost or fully in contact. Gonopods remarkably complex, sternal remnants strongly reduced or absent; coxites large and globose, devoid of dorsal apophyses; telopodites tripartite, consisting of two large laminae (anterior acropodite and posterior prefemoral process) and a fullY independent solenomere branch between both [ Hoffman, 1975, in litt.].

BRIEF DESCRIPTION. Adults medium-sized (32–50 mm long and 4–6 mm wide), usually dark olive to brown and usually devoid of a bright pattern, more rarely lighter, red-grey with a yellowish axial stripe, yellowish or yellowish white paraterga and reddish-yellow venter and legs. Body with 20 rings, increasingly wide until ring 5, thereafter increasingly attenuated. Antennae rather short and slender to robust, up to only poorly clavate; in length, antennomeres 2–6>>1=7>8. Collum usually broadly rounded laterally, only occasionally triangular and almost pointed. Metatergal surface smooth and shining, often leatherY, verY finelY striolate, with neither transverse sulci nor an axial line. Dorsum moderately convex, especially anteriorly. Sides smooth, onlY occasionallY finelY granulate. Rings 1–4(5) very compact and tightly following one after the other, vs remaining rings, more loose and gradually attenuating towards telson. Paraterga well-developed, on ring 19 smallest, set at about upper 1/2 to 1/4 body height, largely rimmed throughout, broadly and more or less regularly rounded anterolaterally and laterally, typically smooth, only occasionally and only on anterior body rings with a small marginal tooth towards anterior corner, caudal corner usually broadly to narrowly rounded, in poreless paraterga sometimes pointed. Pore formula normal: 5, 7, 9, 10, 12, 13, 15–19. Ozopores placed inside ovoid pits or grooves on distinct ovoid calluses (= peritremata), dorsolateral to lateral in position. Epiproct usuallY short, finger-shaped, tip only occasionally with a paramedian pair of small claws directed ventrocaudally. Hypoproct often with a prominent median projection at caudal margin, longer than paramedian setigerous knobs. Pleurosternal carinae inconspicuous, present only on a few anterior rings.

Sterna usuallY unmodified, broad, flat, bare and at most with faint cross-impressions. Legs long and slender, anterior ♂ prefemora sometimes with distoventral swellings and most ♂ tibiae with apicoventral pads/chelae subtending the bases of tarsi. ♂ coxae 3 each with a ventral process at apex, usuallY densely setose.

Gonopodal aperture kidney-shaped, large, taking up most of prozonum 7, but not shifted beyond it, with clearly elevated and rounded lateral sides and a regularly rounded caudal shelf inside ( Fig. 12I ). Gonopods mostly remarkably complex, characteristic of the genus, each tripartite (see Diagnosis above). Gonopodal coxite large and globose, usually with two macrosetae; cannula not set inside a marginal notch; prefemorite (= a densely setose prefemoral region) proportionately smaller, forming an obtuse angle with telopodite; both acropodite and solenomere set off bY a distinct cingulum formed bY a strong flexure on lateral side.

The following species of Camptomorpha are considered valid, all listed in alphabetic order, each accompanied by brief descriptive notes and available meaningful illustrations. The content and qualitY of these notes varY significantlY depending on the amount of published information available. Only the new species is being described and illustrated in due detail.

Figures

Fig. 12. CAmptOmOrpHA HOffmAni sp.n., ♂ holotYpe. A — habitus, lateral view; B, E — anterior part of bodY, ventrolateral and dorsal views, respectively; C, F — middle part of body, sublateral and dorsolateral views, respectively; D, G — caudal part of body, ventral and dorsolateral views, respectively; H — intact ring 7 with gonopods in situ, subventral view; I — ring 7 with removed gonopods; J — both gonopods, anteroventral view; K–M — left gonopod, anteromesal, anteroventral and sublateral views, respectively. Designations:A — acropodite; b — basal spine on PfP; d — distal spine on PfP; PfP — prefemoral process; sl — solenomere. Рис. 12. CAmptOmOrpHA HOffmAni sp.n., голотип ♂. A — обЩий вид, сбоку; B, E — переднЯЯ часть тела, соответственно одновременно сниЗу и сбоку и сверху; C, F — среднЯЯ часть тела, соответственно почти сбоку и одновременно сверху и сбоку; D, G — ЗаднЯЯ часть тела, соответственно сниЗу и одновременно сверху и сбоку; H — целый туловиЩный сегмент 7 с гоноподами на месте, почти сниЗу; I — туловиЩный сегмент 7 с вычлененными гоноподами; J — оба гонопода, одновременно спереди и сниЗу; K–M — левый гонопод, соответственно одновременно спереди и иЗнутри, одновременно спереди и сЗади и почти сбоку. ОбоЗначениЯ:A — акроподит; b — шип в основании PfP; d — дистальный шип на PfP; PfP — префеморальный отросток; sl — соленомер.