Xenelmis micros (Grouvelle)

Sampaio, Brunno Henrique Lanzellotti, Passos, Maria Inês Da Silva Dos & Ferreira-Jr, Nelson, 2015, New species and new records of Xenelmis Hinton (Coleoptera: Elmidae) from Southeastern Brazil, Zootaxa 3936 (1), pp. 115-122 : 120-121

Xenelmis micros (Grouvelle)

( Figs 4 a–c)

Pronotum with granules bigger than facet of eyes, denser medially, sparser near lateral margin, anterior margin bisinuate, lateral margin crenulate and feebly arcuate, converging toward anterior margin, posterior margin sinuate; pair of median carinae formed by row of flattened granules beginning on median acute projections on posterior margin, arcuate on posterior half, slightly widening on anterior half, fading at anterior 1/5.

Elytra with anterior margin feebly bisinuate, lateral margins subparallel in anterior half, in posterior half converging to rounded, projected apex; elytral intervals glabrous, flat, fifth and seventh intervals bear carina formed by row of granules, inner carina longer than outer.

Prosternum wide, granulate; prosternal process wider than half of prosternal anterior margin.

Abdomen microgranulate with fine, small setae on lateral areas posterior margins of ventrites strongly arcuate.

Legs: coxae, trochanters, femora and tibiae with fine, small and sparse setae; fore tibiae with distal fringe of tomentum on anterior face and subapical spine antero-ventrally; middle tibiae with fringe of tomentum on anterior and posterior face, latter longer than former; hind tibiae with a fringe of tomentum on posterior face, on apical 2/3; Fore tarsi with tufts of fine and long setae on ventral face of tarsomeres 1–4, less conspicuous on tarsomere 4; middle and hind tarsi with fine, short setae on ventral face, less conspicuous in tarsomere 5.

Male genitalia with median lobe very wide in basal 4/5, apical 1/5 converging to subacute apex; parameres short, about 2/3 length of median lobe.

The single record of this species was in the type-locality “ Brésil, Theresopolis” (Grouvelle 1888) with the additional information “Theresopolis, Santa Catharina, Brazil ” ( Hinton 1946). This locality is currently the municipality of Águas Mornas, in Santa Catarina State. In this paper X. micros is being registered for the municipality of Nova Friburgo, in Rio de Janeiro State.

Examined material: Brazil, RJ, Nova Friburgo municipality, 1 male—Cascata, Rio Macaé, Cachoeira da Fumaça, 22º21'56,1"S 42º15'13,1"W, 368m, 08.III.2009, B.H.L. Sampaio leg. [ DZRJ Coleoptera-5556].

Figures

FIGURE 4. Xenelmis micros (Grouvelle): a) habitus dorsal view; b) habitus ventral view; c) male genitalia, dorsal view.