Adelorhagus bicoloratus Otto, 2013

Otto, Robert L., 2013, Description of a new species of Adelorhagus Horn, 1890 (Coleoptera: Eucnemidae) from Honduras with a key to the species, Insecta Mundi 2013 (297), pp. 1-4 : 1-3

Adelorhagus bicoloratus Otto , new species

Figures 1-4

Diagnosis. Angulated, elongate anterior lateral pronotal ridge, along with parallel-sided pronotum and coloration will distinguish this species from A. lateralis .

Type material, female, in FSCA, with label data: “ HONDURAS: Yoro; PN Pico Pijol; 14 May 2002; R. Turnbow” / “ HOLOTYPE: Adelorhagus ; bicoloratus ; Otto; det. R. L. Otto; 2013 [red printed label]. Paratype, male, in Robert Turnbow private collection (TC), with label data: “ HONDURAS: Yoro ; PN

Pico Pijol; 3 June 2003; R. Turnbow ” / “ PARATYPE: Adelorhagus ; bicoloratus ; Otto ; det. R.L. Otto ; 2013 [yellow printed label].

Description. Body: Subcylindrical, moderately elongate and tapering towards the apex; bicolored with frons, pronotum, legs, antennomere II and ventral surface red-orange; head, clypeus, antennae, pronotal hind angles and elytra dull black; pronotum and elytra clothed with vestiture of short, decumbent yellow setae; delicate, narrow vittae consisting of elongate, yellow setae extending from each elytral humerus down to caudal end ( Fig.1 ). Length, 6.00 mm. Width, 2.00 mm.

Head: Very closely punctate to granulose, subspherical with convex frons; apical margin of clypeus rounded, about 2.5 times wider than base; mandibles stout, bidentate, densely punctate.

Antennae: Serrate, reaching about 2/3 the length of the body. Antennomere III slightly longer than IV; antennomeres IV-X each subtriangular, subequal and about two times longer than wide; antennomere XI slightly longer than X.

Pronotum: Very closely punctate, granulose; longer than wide, with moderately sized hind angles; basal 3/4 parallel-sided; anterior portion of pronotum slightly convex; disc simple, without impressions or ridges; lateral sides ( Fig. 3 ) with two ridges; anterior lateral ridge extended straight back, about 1/3 the length of pronotum; posterior lateral ridge extend at least 3/4 the length of pronotum.

Scutellum: Slightly rugose, oblong and distally rounded.

Elytra: Faintly indicated striae present; interstices slightly elevated, very closely punctate to granulose.

Legs: First tarsomere shorter than the combined lengths of the remaining four in mesothoracic and metathoracic tarsi; tibiae rounded in cross section; lateral surfaces of mesothoracic and metathoracic tibiae with single spines; tarsomeres 1-3 simple; tarsomere 4 truncate and excavated; fifth metathoracic tarsomere elongate with basally swollen simple claws.

Venter ( Fig. 2 ): Punctate, with decumbent yellow setae; hypomera with anteriorally indicated notosternal antennal grooves; metepisternum parallel-sided; metacoxal plates medially twice as wide as lateral sides.

Aedeagus ( Fig. 4 ): Basal piece elongate, caudally rounded; basally narrowed, apical two-thirds widened; lateral lobes elongate, simple, apically rounded, clusters of elongate setae present near apices; secondary lateral lobes short, hidden between lateral lobes; median lobe basally widened, elongate, apically bilobed, clusters of elongate setae present near apex.

Variation. The paratype is equal in length to the holotype. The male antennae are nearly as long as the length of its body. The underside and head exhibit some color variation, that being darker than the holotype specimen.

Distribution. The species is known only from a single locality in Honduras where the two specimens were collected.

Etymology. This species is named for the overall coloration of the species

Figures

Figures 1-4. Adelorhagus bicoloratus Otto, n. sp. 1-3) Dorsal, ventral and lateral of holotype. 4) Aedeagus of paratype, ventral view. Scale line = 0.5 mm.