Lathrobium paulitortum, Assing, 2017
publication ID |
https://doi.org/ 10.5281/zenodo.5356869 |
persistent identifier |
https://treatment.plazi.org/id/AB2D7E5D-FF98-3349-FF01-FE67FEA1606F |
treatment provided by |
Marcus |
scientific name |
Lathrobium paulitortum |
status |
sp. nov. |
Lathrobium paulitortum View in CoL nov.sp. ( Figs 17-24 View Figs 17-24 )
T y p e m a t e r i a l: Holotype 3: " NEPAL, Solu Khumbu, Surkie La 2900-3000 m, 27°34'N, 86°49'E, 09.V.2013, leg. J. Schmidt / Holotypus 3 Lathrobium paulitortum sp.n., det. V. Assing 2016 " (NME). Paratype ♀: same data as holotype (cAss).
E t y m o l o g y: The specific epithet (adjective) is composed of the Latin adjectives paulus (little, slight) and tortus (twisted). It alludes to the slightly asymmetric ventral process of the aedeagus in ventral view.
D e s c r i p t i o n: Size apparently subject to slight sexual dimorphism. Body length 6.3 mm (3), 6.0 mm (♀); length of forebody 3.1 mm (3), 2.9 mm (♀). Posterior margin of tergite VIII weakly convex and in the middle weakly pointed, without sexual dimorphism. Other external characters ( Figs 17-18 View Figs 17-24 ) as in L. kongmaicum .
3: protarsomeres I-IV ( Fig. 17 View Figs 17-24 ) strongly dilated; sternite VII ( Fig. 19 View Figs 17-24 ) strongly transverse, 1.58 times as broad as long, without distinct postero-median impression, chaetotaxy practically unmodified, posterior margin very shallowly concave; sternite VIII ( Fig. 20 View Figs 17-24 ) 1.12 times as broad as long, shallowly impressed along middle, setae in median portion very weakly modified, posterior margin weakly convex, without median excision; aedeagus ( Figs 21-22 View Figs 17-24 ) 0.95 mm long; ventral process slender, strongly curved, and apically very acute in lateral view, slightly asymmetric in ventral view; dorsal plate with lamellate, very long, and moderately sclerotized apical portion, and with moderately short basal portion; internal sac with dark membranous structures, but without sclerotized spines.
♀: protarsomeres I-IV moderately dilated; sternite VIII ( Fig. 23 View Figs 17-24 ) 1.18 times as long as broad, with micropubescence in apical portion, posterior margin strongly convex; tergite IX ( Fig. 24 View Figs 17-24 ) with very long antero-median portion without median suture and with very short postero-lateral processes; tergite X ( Fig. 24 View Figs 17-24 ) very short and flat, approximately 0.4 times as long as antero-median portion of tergite IX.
C o m p a r a t i v e n o t e s: Lathrobium paulitortum , too, belongs to the L. nepalense group. Regarding the shape of the aedeagus, it is most similar to L. infractum ASSING, 2012 (East Nepal: Solu Khumbu; female sexual characters unknown), from which it is distinguished by a male sternite VII with a less distinctly concave posterior margin and practically unmodified pubescence, a male sternite VIII with a less pronounced and narrower median impression with less distinctly modifed setae, and an aedeagus with a more slender, less strongly curved (lateral view), and less strongly asymmetric (ventral view) ventral process. For illustrations of L. infractum see ASSING (2012).
D i s t r i b u t i o n a n d n a t u r a l h i s t o r y: The type locality is situated near Kongma, Kongma Danda, East Nepal. The specimens were collected at an altitude of 3200 m.
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