Megalodorcadion (Anatolodorcadion) nudefasciatum Özdikmen & Şenyüz, 2015

Özdikmen, Hüseyin, 2015, A new species of Megalodorcadion (Anatolodorcadion) (Coleoptera: Cerambycidae) in Turkey, Florida Entomologist 98 (2), pp. 647-650 : 647-649

Megalodorcadion (Anatolodorcadion) nudefasciatum Özdikmen & Şenyüz sp. nov. ( Figs. 1 and 2)

MALE

Body length, 18.38 mm; width, 6.75 mm.

Body black, covered with rather sparse, recumbent, short, yellow or whitish-yellow pubescence.

Head nearly glabrous, black, except reddish-brown palpi; medially with a narrow but distinct cavity from near anterior margin of frons to almost head end, very deep on frons, shallow on vertex; with fine, rather sparse punctation in most parts. Antennae black except scape and pedicel, which are reddish-brown.

Pronotum distinctly transverse, almost completely glabrous; with 3 longitudinal depressions (2 medio-lateral + 1 median); with very sparse, fine punctate on disc, becoming denser, deeper laterally. Lateral process of pronotum rather short and obtuse.

Scutellum without pubescence, small and deltoid, but not triangular, and elongated at apex.

1 Gazi University, Science Faculty, Department of Biology, 06500 Ankara, Turkey

2 Dumlupınar University, Faculty of Arts and Science, Department of Biology, Kütahya, Turkey

Elytra with very dense, recumbent, dark-brown ground pubescence; each elytron with two glabrous bands as humeral and dorsal, and a distinct sutural band of white pubescence; glabrous bands complete; dorsal band separated from humeral band but joined at the end; elytra laterally glabrous; elytral apex without setae, flattened and rounded, reddish-brown.

Only apex of pygidium visible in dorsal view, reddish-brown.

Abdomen black with reddish-brown apex of last sternite.

Legs reddish-brown completely.

TYPE MATERIAL

HOLOTYPE Ƌ: TURKEY, Kütahya Province, Dumlupınar University , 13-V-2004 . PARATYPE 1 Ƌ: same data as Holotype. The specimens were collected by the second author. They are deposited in Dumlupınar University ( Turkey : Kütahya Province) ( Fig. 3) .

REMARKS

The new species definitely belongs to the subgenus Megalodorcadion (Anatolodorcadion) Özdikmen & Kaya, 2015 . It is closely related to M. (A.) glabrofasciatum (Daniel, 1900) but differs by elytra with only a distinct sutural band of white pubescence in both sexes (elytra with the other complete or incomplete bands of white pubescence besides of sutural band in M. [A.] glabrofasciatum ); completely glabrous humeral and dorsal bands and dark-brown ground pubescence on elytra (humeral and dorsal bands incompletely glabrous, and ground pubescence on elytra black in males of M. [A.] glabrofasciatum ); completely reddish-brown scape and pedicel (only scape dark brown in males of M. [A.] glabrofasciatum ); rather short and obtuse lateral process of pronotum (acute in M. [A.] glabrofasciatum ).

VARIABILITY IN THE PARATYPE

Body length from 18.38 to 19.38 mm. In paratype, head on vertex with 2 triangular areas of blackish ground hairs. Each medio-lateral part on pronotum (on the parts of longitudinal medio-lateral depressions) with distinct but narrowly longitudinal dark part formed by very dense recumbent blackish pubescence. The remaining parts of pronotum almost completely glabrous. Female unknown.

ETYMOLOGY

From the Latin words “nudus” (meaning in English “naked, glabrous”) and “fascia” (meaning in English “band, stripe”).

The number of species of the genus Megalodorcadion , endemic to Turkey, becomes 7 with the description of the new species. A key to the species was proposed by Özdikmen & Kaya (2013), but a revised version is presented herein as follows:

Revised key to the species of Megalodorcadion modified from Özdikmen & Kaya (2013) 1.— Pronotum with 1 median and 2 lateral bands of pubescent areas.......................................................... 2

1'.— Pronotum nearly glabrous, never with complete median and lateral bands.................................................. 5 2.— Humeral and dorsal bands on elytra separated at least in the most part..................................................... 3

2'.— Humeral and dorsal bands on elytra entirely fused................................. M. (Fusodorcadion) parallelum (Küster, 1847)

3.— Body length relatively large, up to 24 mm; elytral dorsal band posteriorly joined with humeral band, or ended rather close to it...... 4

3'.— Body length relatively small, up to 16 mm; elytral dorsal band posteriorly distinctly not joined with humeral band...................................................................................................... M. (s.str.) walteri (Holzschuh, 1991)

4.— Presutural elytral band without black spots............................................... M. (s.str.) ledereri (Thomson, 1865)

4'.— Presutural elytral band with black spots.............................................. M. (s.str.) escherichi (Ganglbauer, 1897)

5.— In male, elytral bands distinct, body clearly elongated, pygidium dorsally distinctly visible; in female, head on vertex without triangular patterns...................................................... M. (Anatolodorcadion) dombilicoides ( Özdikmen & Kaya, 2013)

5'.— In male, elytral bands absent or partially absent, body not clearly elongated, pygidium dorsally not distinctly visible; in female, head on vertex with distinct triangular pattern................................................................................. 6

6.— Elytra with only a distinct sutural band of white pubescence, the other bands completely glabrous............ M. (Anatolodorcadion) nudefasciatum sp. nov.

6'.— Elytra with the other complete or incomplete bands of white pubescence besides of sutural band............. M. (Anatolodorcadion) glabrofasciatum (Daniel, 1900)