Cryptogonodesmus sacciformis, Golovatch, 2024

Golovatch, S. I., 2024, Five new species of the millipede family Trichopolydesmidae from Peru (Diplopoda: Polydesmida), Arthropoda Selecta 33 (1), pp. 1-13 : 6

publication ID	https://doi.org/10.15298/arthsel.33.1.01
DOI	https://doi.org/10.5281/zenodo.15547712
persistent identifier	https://treatment.plazi.org/id/03D98786-916C-FF92-C50A-0176FA91BE5C
treatment provided by	Felipe
scientific name	Cryptogonodesmus sacciformis
status	sp. nov.

Treatment

Cryptogonodesmus sacciformis sp.n.

Figs 5–10 View Figs 5–7 View Figs 8–10 .

HOLOTYPE ♂ ( ZMUM), Peru, Junin Region, Calabaza , 2200 m a.s.l., S 11º30′38″, W 74º49′15″, 16.IX.2017, K.Yu. Eskov leg. GoogleMaps

PARATYPES: 2 ♂♂, 2 incomplete ♂♂ (posterior halves of body missing), same place, together with holotype.

NAME. To emphasize the very large, simple and sac-shaped gonopodal telopodite.

DIAGNOSIS. Differs from congeners by the gonocoxite being small, rather washer-shaped and devoid of a gonocoel, whereas the telopodite is clearly unipartite, strongly hypertrophied, roundly sac-shaped and mostly finely and densely hirsute; a solenomere totally wanting.

DESCRIPTION. Length of all types ca 10.5 mm, width of midbody pro- and metazonae 1.0 and 1.6 mm, respectively (♂). Colouration in alcohol uniformly brown with light grey-brown venter and legs ( Figs 5–7 View Figs 5–7 ). Body with 20 rings.

All characters as in Moojenodesmus simplex sp.n., except as follows.

In width, collum <head <ring 2 <3 <4 <5=15, thereafter body gradually tapering towards telson ( Figs 5–7 View Figs 5–7 ). Paraterga strongly developed, set high (at about upper ¼ midbody height), starting with collum, dorsum at most very faintly convex; paraterga largely subhorizontal to faintly upturned.

Gonopods ( Figs 8–10 View Figs 8–10 ) with relatively small coxites (cx), these being rather washer-shaped and about as high as telopodites (te), each cx at base with two long setae on caudal face; a long, simple and unciform cannula (ca) as usual. Telopodite (te) simple, massive, rounded and entirely sac-shaped, densely and finely hirsute almost all over, very strongly exposed due to a rudimentary gonocoel, on caudal face with an inconspicuous tubercle/shelf supporting three strong setae apically and several shorter setae closer to base, all marking the terminal course of a fully mesal seminal groove. A solenomere missing.