Trachelismus (Eoclitostyloides) kuscheli, Legalov, 2018

Legalov, Andrei A., 2018, A new species of the genus Trachelismus Motschulsky, 1870 (Coleoptera: Attelabidae) from Philippines, Baltic Journal of Coleopterology 18 (1), pp. 47-50 : 48-49

Trachelismus (Eoclitostyloides) kuscheli sp. nov.

( Fig. 1 )

Type material: Holotype. Male ( ISEA), Philippines, North Luzon, Nueva Viscaya, VIII 2016.

Paratypes. Male ( ISEA), idem; male ( ISEA), Samar, Eastern Visayas, Hinabangan , X 2015 ; male ( ISEA), Samar, Eastern Visayas, Hinabangan , XII 2016 .

Description. Male: Body naked, yellowybrown. Head, antennae, neck, disk of pronotum (or two longitudinal strips on disk), apex of scutellum, partially meso- and metaventrites, apical parts of femora, tibiae and tarsi black.

Head weakly elongated. Rostrum 1.6 times as long as wide in middle, widened to apex, finely punctate. Eyes large, convex. Forehead flattened, with small fovea. Vertex convex, smooth. Temples long, narrowed to neck. Neck very long, 3.8-5.1 times as long as wide, transversely wrinkled. Antennae inserted before middle of rostrum. Antennomere 1 longconical. Antennomere 2 oval, much shorter and narrower than antennomere 1. Antennomeres 2- 7 conical. Antennomere 3 little longer and narrower than antennomere 2. Antennomere 4 longer than antennomere 3. Antennomere 5 distinctly longer than antennomere 4. Antennomere 6 shorter than antennomere 5. Antennomere 7 subequal to antennomere 6. Antennomere 8 wide-conical, with dense setae. Club quite compact, with dense setae. Antennomere 9 much longer than antennomere 8. Antennomere 10 shorter than antennomere 9. Antennomere 11 longer than antennomere 10. Pronotum campaniform, 0.8-0.9 times as long as wide at base. Pronotal groove sharp. Greatest width at base. Sides almost direct. Disk convex, almost smooth. Scutellum wide, back trapezoidal.

Elytra almost rectangular, 1.5-1.6 times as long as wide at base, 1.3 times as long as wide in middle, 1.4-1.5 times as long as wide at apex, 2.6-2.8 times as long as pronotum. Humeri convex. Greatest width behind. Intervals wide, flat, smooth. Intervals 2 and 4 intervals convex at elytral base. Striae distinct, with large points. Striae 9 striae merge with striae 10 before metacoxa. Epipleuron distinct and narrow.

Precoxal portion of prosternum elongated, transversely wrinkled. Procoxal cavities rounded and contiguous. Postcoxal portion of prosternum very short. Mesocoxal cavities narrowly separated. Metaventrite convex, short, as long as metacoxal cavity. Mestepimeron densely punctate, covered by silvery hairs. Metanepisterna wide. Metepimeron large, covered by silvery hairs.

Abdomen weakly convex, weakly punctatewrinkled, flattened in middle. Ventrite 1 shorter than metacoxal cavity, with blades. Ventrite 2 distinctly longer than ventrite 1. Ventrite 3 subequal in length to ventrite 2. Ventrite 4 distinctly shorter than ventrite 3. Ventrite 5 little shorter than ventrite 4. Pygidium convex, coarsely punctate.

Legs long. Procoxa conical. Femora widened, with small tooth in apical third. Tibiae long and narrow, weakly biconcave, with large mucro and apical comb of setae. Tarsi long. Tarsomeres 1- 3 with pulvilli on lower surface. Tarsomeres 1 and 2 conical. Tarsomere 1 long. Tarsomere 2 shorter and wider than tarsomere 1. Tarsomere 3 wide bilobed. Tarsmomere 4 short. Tarsomere 5 elongated. Claws long and fused at base.

Length of body: 7.1-8.5 mm.

Diagnosis. This new species is similar to Trachelismus klassi Legalov, 2007 from Mindanao but differs in the black apical parts of femora, tibiae and tarsi, transversely wrinkled neck, narrower elytra and reduced basal sclerite of the endophallus.

Distribution. Philippines (Luzon, Samar).

Remarks. Distribution (fig. 2) of the species from the subgenus Eoclitostyloides (T. (E.) kuscheli , T. (E.) klassi and T. (E.) schultzei (Voss, 1922)) is given.

Etymology. In memory of the entomologist Guillermo Kuschel ( New Zealand).

Figures

Fig. 1. Trachelismus kuscheli: 1 - holotype, male, dorsally, 2 - paratype, male, dorsally, 3 - paratype, male, laterally, 4 - aedeagus, holotype, dorsally. Scale bar = 1.0 mm.