Leptochirus (Tropiochirus) venezuelanus Wendeler, 1957

Asenjo, Angelico & Ribeiro-Costa, Cibele S., 2013, Revision of the neotropical subgenus Tropiochirus of the genus Leptochirus Germar 1824 (Coleoptera: Staphylinidae: Osoriinae), Journal of Natural History (J. Nat. Hist.) 47 (19 - 20), pp. 1257-1285 : 1277-1279

publication ID	https://doi.org/ 10.1080/00222933.2012.763053
publication LSID	lsid:zoobank.org:pub:9A2DDE88-71E2-4E28-90AC-D542DABAAF66
persistent identifier	https://treatment.plazi.org/id/953B87C0-0E53-2D2C-FEB4-A308BD68D8EF
treatment provided by	Felipe
scientific name	Leptochirus (Tropiochirus) venezuelanus Wendeler, 1957
status

Treatment

Leptochirus (Tropiochirus) venezuelanus Wendeler, 1957 View in CoL

( Figures 2G View Figure 2 , 3G View Figure 3 , 7 View Figure 7 , 8A–F View Figure 8 )

Leptochirus (Tropiochirus) venezuelanus Wendeler, 1957: 46 View in CoL [original description, comparison with L. (T.) proteus Fauvel, 1864 View in CoL . Type locality: “ Venezuela, Merida ”].

Leptochirus venezuelanus Herman, 2001: 1107 View in CoL [world catalogue].

Type material. Leptochirus (T.) venezuelanus . Holotype (male): “ Venezuela / Merida ” “L. Mesochirus / venezuelanus nov. / Wendeler det.” “ Holotypus ” ( ZMHB). Paratype (male): “ Venezuela / Merida ” “L. Mesochirus / venezuelanus nov. / Wendeler det.” “ Paratypus ” ( ZMHB). Note: In the original description Wendeler (1957) described the species in the subgenus Tropiochirus , and the characters are compatible with it, but the label of holotype reads “ L. (Mesochirus) venezuelanus ”.

Additional specimens

VENEZUELA. without locality, date and collector (1 male ZMHB). COLOMBIA. Distrito Capital: Aguas largas, 2133.6 m, without date, O.Thieme S. col. (2 males ZMHB); Nueva Granada, without date and collector (1 female ZMHB). BRAZIL. Rio de Janeiro: Nova Friburgo, without date and collector (1 female ZMHB). ECUADOR. Pichincha: Santa Inés, without date, R. Haensch S. col. (1 female ZMHB); Azahuay: Baños, without date, R. Haensch S. col. (1 female ZMHB). UNDETERMINED COUNTRY. patria?, without date and collector (3 females, 3 males ZMHB). Note: We received one specimen from the IRSNB labelled “ Syntype ” of Leptochirus (T.) proteus which belongs to Leptochirus (T.) venezuelanus : “Mexico” “caracas” “Coll. et det.(A. Fauvel / Leptochirus / proteus Fauv. / R.I.Sc.N.B. 17.479” “ Syntype ” “Santa Fe / de Bogota” “Coll. et det. A. Fauvel / Leptochirus / proteus Fauv. / R.I.Sc.N.B. 17.479” “ Syntype ” “ PARALECTOTYPUS / Leptochirus (Tropiochirus) / proteus Fauvel, 1864 / Desig. Asenjo and Ribeiro-Costa, 2013” “ Leptochirus (Tropiochirus) / venezuelanus Wendeler, 1957 /Det. Asenjo and Ribeiro-Costa, 2013”.

Diagnosis

Leptochirus (T.) venezuelanus , like L. (T.) milton sp. nov., L. (T.). marina sp. nov. and L. (T.) pachoensis have the median sulcus of head deep, sides of the median sulcus parallel ( Figure 2B, D, E, G View Figure 2 ), but L. (T.) venezuelanus can be distinguished from these species by the gonocoxites proximal of male without a projecting angle at posterior border ( Figure 8E View Figure 8 ).

Redescription

BL: 8.48, BW: 5.1

Body strongly depressed, all black except tarsi red-brown.

Head. Transverse ( Figure 2G View Figure 2 ). Inner lateral teeth separated by a depression extending to base. Inner and outer lateral teeth fused and resembling a septum; median sulcus deep, sides of the median sulcus parallel; laterofrontal depressions oval. Labrum with outer edge strongly angled and lateral-apical edge concave. Mandibles ( Figures 2G View Figure 2 , 3G View Figure 3 ) with lateral longitudinal ridge occupying less than two-thirds of apical region; external margin developed, attenuated anteriorly. Left mandible ( Figure 3G View Figure 3 ) with first dorsal tooth developed, sinuate and bifurcate, accessory tooth absent; second dorsal tooth little developed and resembling a small hill; first ventral tooth with tooth accessory, third ventral tooth consisting of two structures with the bases not fused. Submentum with setae arranged in row on anterolateral margin.

Thorax. Pronotum ( Figure 2G View Figure 2 ) wider than long (PL: 1.54, PW: 1.74); superior marginal line of hypomeron not interrupted, not bent to dorsal region at anterior margin and bent to dorsal region at posterior margin; with pair of small depressions near basal constriction. Inferior marginal line of hypomeron reaching anterior margin. Apex of prosternal process strongly expanded and resembling a circular plate, extending considerably beyond the lateral process of hypomeron. Metaventrite with microsculpture longitudinally undulate in median region and with small longitudinal median depression near posterior edge. Mesoscutellum with apex rounded. Elytra longer than broad and with pair of small depressions on posterior-lateral edge (EL: 2.09, EW: 1.83).

Abdomen. Cylindrical. Sternite III with keel of apex rounded. Tergite IX ( Figure 8D View Figure 8 ) sclerotized with left and right plates separated, each with six setae of various lengths. Tergite X ( Figure 8D View Figure 8 ) almost membranous except for sclerotized apical part, with two pairs of long apical setae.

Male. Sternite IX ( Figure 8E View Figure 8 ) composed of two plates, the distal plate sclerotized except for membranous apex, anterior margin rounded, posterior margin with small acute projection in the middle, and with two long setae; proximal plate less sclerotized, greater than apical, broadened in middle and without a projecting angle at posterior border. Aedeagus ( Figure 8A–C View Figure 8 ) with median lobe slightly bulbous at base, rounded at apex, weakly sclerotized on dorsal side and a small plate sclerotized on ventral side; parameres short, pointed and fused dorsally.

Female. Similar to male, except the gonocoxites divided longitudinally ( Figure 8F View Figure 8 ). The distal plate with apex membranous and long seta; proximal plate with the posterior region rounded.

Distribution

In the current study Leptochirus (T.) venezuelanus is listed from Mexico, Colombia, Venezuela, Ecuador and Brazil. Herman (2001) lists Leptochirus (T.) venezuelanus from Venezuela. We are here including Mexico, Colombia, Ecuador, and Brazil as new records for Leptochirus (T.) venezuelanus ( Figure 7 View Figure 7 ).