Trypogeus coarctatus Holzschuh, 2006

Vives, Eduard, 2015, Revision of the genus Trypogeus Lacordaire, 1869 (Cerambycidae, Dorcasominae), ZooKeys 502, pp. 39-60 : 48-49

Trypogeus coarctatus Holzschuh, 2006 Fig. 19

Trypogeus fuscus : auct. nec Toxotus fuscus Nonfried, 1894: 209.

Trypogeus coarctatus Holzschuh, 2006: 207.

Material studied.

1 male from Indonesia, Bandar Baru, Sumatra Utara, 3-V-1999, S. Tsuyuki leg. (NOC,); 1 male from Indonesia, N Sumatra, Brastagi, 27.IV-4.V-1988, A. Saito leg. (in NOC); 1 female from Indonesia, SW Sumatra, Marang, W. Doherty leg, 1890 (ex coll. Oberthur) (MNHN); 1 female from Indonesia, W Sumatra, Merapi, IV.1991, S. Ymada leg. (KMC).

Redescription.

Size of the male: length 10-12 mm; width 3.6 mm. Size of the female: length 14-17 mm; width 4.2 mm. The general colour of the integument is testaceous yellow, males are darker and browner. Head brown except for the upper part which is yellowish. The antennae of males are completely brown, except for the last antennomere which is yellow; in females the scapus is testaceous, the antennomeres 3-8 are brown and the remaining 9-11 are yellow. The legs of the males are brown except for the femora which are mostly yellow. The legs of the females are completely yellowish. Pronotum brown in males with the discal area yellowish, in females it is almost completely testaceous. Entirely brown elytra, except for the basal area which is yellower, slightly lighter in the females. Elytra wider than pronotum with very obtuse humeri, rounded and projecting upwards. The suture is bordered and protruding. Apex of elytra rounded and dehiscent. The elytra are narrowed after the middle, widening slightly at apical fifth. Underside of the body and head brown except gular area which is yellow. Brown epimerae and abdominal sternites yellowish in both sexes. Large head with very short broad neck. The mandibles are long and almost entirely covered in golden tomentum. Translucid epistome, rectangular labrum bearing long golden setae on the free margin. Maxillary palpi longer than mandibles, with the last segment fusiform. Labial palpi shorter with the last segment cup-shaped. Base of the antennae with a granulous crest that extends to base of mandibles. Large prominent eyes, medium granulation. Posterior part of the head with dense golden tomentum. Antennae of males slightly longer than elytra, in females only reaching apical third. Long slender antennomeres, slightly flattened and angulose at the external distal part from antennomeres 4-10, the last is fusiform. Cylindrical pronotum, almost as wide as long in males, transverse in females, weakly arched sides with a barely protruding gibbosity before the middle. Discal area with four rather indistinct protuberances, the two anterior ones are very close to each other, the posterior pair slightly transverse in the males. Anterior border of pronotum finely margined, the posterior border is sinuate with double margination. Narrow prosternum, prosternal process in the shape of a fine lamina, hardly dilated behind. Widely opened procoxal cavities. Conical prominent coxae contiguous. Mesocoxae slightly separated in males and much more so in females, the metacoxae, contiguous in males, are separated in the females. Triangular scutellum rounded at apex. Elytral apex round and dehiscent. Elytra covered by golden tomentum which becomes reddish or black at the apex and margin of the apical third. Legs short and robust, covered by long silky golden pubescence. Tibiae slightly dilated apically. The male aedeagus (Fig. 14) is long and slightly arched, acuminated at the apex, the lower lamina is distinctlylonger than the upper. Very simple endophalus lacking interior sclerites.

Remarks.

Two syntype specimens described as Toxotus fuscus Nonfried, 1894, were examined that correspond in reality to Philus ophthalmicus Pascoe, 1886 (Fig. 6). It is hereafter established that the species assigned as Trypogeus fuscus auct. belong to Trypogeus coarctatus Holzschuh. A lectotype is designated between the two syntypes studied by Nonfried, in order to establish the exact taxonomic status of the species. Lectotype, 1 male from NW Sumatra, Tebing Tinggi, Dr. Schultheiss; 12.V.1884, (DEI) (Figs 7-8).

Distribution.

Indonesia (Sumatra).