Lophostreptus tersus (Cook, 1896)

Enghoff, Henrik & Akkari, Nesrine, 2024, A new species of Lophostreptus Cook, 1895 discovered among syntypes of L. regularis Attems, 1909 (Diplopoda, Spirostreptida, Spirostreptidae), ZooKeys 1188, pp. 265-274 : 265

Lophostreptus tersus (Cook, 1896)

Ptilostreptus tersus Cook, 1896: 57.

Lophostreptus ptilostreptoides Carl, 1909: 321, synonymized by Enghoff et al. (in press) [synonymy tentatively suggested by Carl (1909: 317)].

Lophostreptus regularis Attems, 1909: 31, synonymized with L. ptilostreptoides by Krabbe (1982: 258).

Lophostreptus tersus : Attems (1914: 143).

Lophostreptus malleolus Kraus, 1958: 12, synonymized with L. ptilostreptoides by Demange and Mauriès (1975: 79).

Lophogonus ptilostreptoides : Demange and Mauriès (1975: 78).

Material examined.

Lectotype of L. regularis (NHMW MY8871) 1 slide with a pair of gonopods, one telopodite broken off. "1. 2. Bp cf" "Lophostreptus/ regularis/ Kibonoto" [leg. Sjöstedt Y., 1905-1906, & don. Sjöstedt / Attems]" . Lectotype here designated. Paralectotypes of L. regularis NHRS: 1 ♂, 6 ♀♀; Kilimandjaro, Kibonoto, Stepp-Kulturzon ; 1000-1900 m a.s.l. ; Oct. 1905; Y. Sjöstedt leg.; also a second ♂ of a different species, see below (NHRS-TOBI 000005480); 4 ♀♀; Kilimandjaro, Kibonoto, Massaistäppen; 1000 m a.s.l. ; 23 Aug. 19905 ; Y. Sjöstedt leg. (NHRS-TOBI 000005478); 1 ♀; Usambara , Tanga , Jun. 1905; Y. Sjöstedt leg. (NHRS-TOBI-000005482); 4♀♀; Kilimandjaro, Kibonoto ; Nov. 1905; Y. Sjöstedt leg.; under multnande blad I bananfarmerkulturzon (under decaying leaves in banana farm cultural zone) (NHRS-TOBI-000005476); 4♀♀; Kilimandjaro, Kibonoto ; 1300 m a.s.l. ; 1905; Y. Sjöstedt leg. I förnan under nedfallna plantanblad (in förna [plant litter] under fallen plantain leaves) (NHRS-TOBI-000005479); 1 ♀; Kilimandjaro, Kibonoto ; 1905 ; Y. Sjöstedt leg.; Mischwald - Kulturzone (NHRS-TOBI-000005481); 4♀♀, 4 anamorphic juv.; Kilimandjaro, Kibonoto ; Nov. 1905; Y. Sjöstedt leg.; Kulturzon (NHRS-TOBI-0000077). NHMW: 1 ♀ anterior body section, 1 ♀, 4 ♀♀ anterior body sections, 5 posterior body sections, 5 middle parts, 3 vials: head, collum & body segments; head & body segments (labelled “♂”); head, collum & body sections (labelled “♀”); 1 slide: three pairs of legs, antenna, gnathochilarium. Tanzania, Kilimanjaro region, Hai district, Steppe , cultivated area, mixed forest 1000-1900 m "1) Lophostreptus regularis Att/ Kilimandjaro, Kibonoto/ Steppe - Kulturzone 1000-1900 m / Sjöstedt” (NHMW MY2466); 2 ♀♀, 2 ♀♀ anterior body sections, 3 juveniles, 1 juvenile anterior body section, three middle parts, three posterior body sections. Tanzania, Kilimanjaro region, Hai district , “Kibonoto” under rotten leaves, banana plantations "2) Lophostreptus regularis / Kilimandjaro. Kibonoto/ In Farmen unter ver-/ faulten blättern / Sjöstedt” (NHMW MY2467); slides " Lophostreptus / Lophostreptus regularis / Kibonoto", “Sjöstedt”: 1) " ♂ [note in shorthand]" two pairs of legs and three single legs, 2) gonopods, one is dissected, 3) " ♂ 3. 4. Sg" two segments, 4) " ♀ 2. 1. 3. Bp" gnathochilarium and three pairs of legs, 5) “♀♀(KOH)” parts of segments (NHMW MY 4076). MfN: 10 specimens in several fragments. Although the type material is supposed to include 2 males, 5 females and 3 juveniles, we were not able to find any male among the specimens .

Remarks.

This species was discussed at length by Enghoff et al. (in press). Because the type material of Lophostreptus regularis contains two species, we here designate a lectotype of this nominal species although it is regarded as a junior synonym of L. tersus . We also provide details of the type material of L. regularis kept in NHMW. Further paralectotypes are housed in Naturhistoriska Riksmuseet Stockholm (NRMS) and Museum für Naturkunde Berlin (MfN) (see list of material) - to our knowledge, there are no syntypes of this species in any other collection.