Reichardtiolus aldhaferi, Lackner, Tomas, 2014

Lackner, Tomas, 2014, Revision of the genus Reichardtiolus Kryzhanovskij, 1959 (Coleoptera, Histeridae, Saprininae), ZooKeys 379, pp. 1-27 : 10-11

Reichardtiolus aldhaferi sp. n. Figs 34-47

Type locality.

Saudi Arabia, environs of Riyadh, Rhodet Khorim.

Type material examined.

Holotype, male, side-mounted on a triangular point with male genitalia extracted, dismembered and glued to the same mounting-point as the specimen, with following labels: “♂” (printed); followed by: "Saudi Arabia, Rhodet Khorim / 25°25.943'N, 47°13.863', Alt. / 572m 5.ii.2012 HP (B)" (printed, black-margined label); followed by: " Reichardtiolus aldhaferi / sp. n. Det. T. Lackner / 2013 HOLOTYPE" (red label, printed) (KSMA). Paratypes: 3 ♂♂ & 1 ♀, idem as Holotype (1 ♂ and 1 ♀ are sputter-coated with gold); 2 ♀♀, with following labels: “♀” (printed), followed by: "Saudi Arabia, Rhodet Khorim / N: 25°22'58" / E:47°16'44" / 08.i.2012 Light Trap (A) (printed, black-margined label); 1 ♀, with following labels: “♀” (printed), followed by: "Saudi Arabia Rhodet Khorim / N: 25°25'94"/ E: 47°13'86" / 25.xii.2011 Light Trap (B) (printed, black-margined label); 1 ♀, with following labels: “♀” (printed), followed by: "Saudi Arabia Kharah, Al / Mozahmiah 30km W.Riyadh / 24.ii.2011/LT / 28°23'33"N, 46°14'39"E / Al Dhafer, H.; Kondratieff,B.; / Fadl, H.&Al Gharbawi, A. (printed-written, black-margined label); 1 ♀, with following labels: “♀” (printed), followed by: KSA: Riyadh: Dirab / 20.i.1986 LT (written). All exs. KSMA except for 1 ♂ from Rhodet Khorim, 5.ii.2012 and 1 ♀, ibid, but 25.xii.2011 in coll. TLAN.

Diagnostic description.

Body size: PEL: 2.50-3.25 mm; APW: 0.85-1.15 mm; PPW: 1.80-2.25 mm; EW: 2.00-2.50 mm; EL: 1.50-2.00 mm. Body darker than that of Reichardtiolus duriculus , otherwise similar to it. Legs and antennae darker than those of Reichardtiolus duriculus ; mouthparts similar except mentum, which is on its anterior margin more emarginated than that of Reichardtiolus duriculus (compare Figs 4 and 35). Clypeus anteriorly elevated (Fig. 34), with slight median depression, rugosely punctate; frons (Fig. 34) coarsely and densely punctate, medially rugulose-lacunose, with shallow depressions; frontal and supraorbital striae and eyes as in Reichardtiolus duriculus . Pronotum slightly less acutely narrowing apically than that of Reichardtiolus duriculus ; punctuation on pronotal disk sparser than that of Reichardtiolus duriculus . Elytra similar to those of Reichardtiolus duriculus , but dorsal elytral striae weaker, occasionally striae 3-4 shortened apically, only half as long as striae 1-2 or even evanescent; between 4th dorsal elytral and sutural striae in several specimens punctures scratch-like and surface with variously deep longitudinal wrinkles; rarely with shallow depression between the bases of 4th and sutural elytral striae. Punctuation of elytral disk sparser than that of Reichardtiolus duriculus , punctures separated by several times their diameter; in fourth elytral interval occasionally scratch-like. Propygidium and pygidium similar to those of Reichardtiolus duriculus , but punctuation denser and coarser in Reichardtiolus aldhaferi , although not as dense as in Reichardtiolus sphingis (compare Figs 12, 13 and 37). Structure of prosternal process similar to that of Reichardtiolus duriculus , but prosternal keel laterally more compressed and setose (compare Figs 10 and 36); carinal prosternal striae occasionally very approximate, medially almost united and difficult to discern; prosternal foveae smaller than those of Reichardtiolus duriculus . Mesoventrite sub-square, trapezoidal, punctuation sparse, punctures separated by several times their own diameter; marginal mesoventral stria always complete anteriorly, almost straight; meso-metaventral sutural stria absent, suture distinct. Metaventrite, metepisternum and abdominal ventrites similar to those of Reichardtiolus duriculus . Legs as in Reichardtiolus duriculus ; except denticles of mesotibia that are sparser, thinner and shorter. Male genitalia: 8th sternite (Figs 38-39) strongly sclerotized laterally, apically with pseudopores and a row of short setae and small velum covered with minute setae; 8th tergite (Fig. 39) deeply emarginated apically, on basal half with prominent pores; 8th sternite and tergite fused laterally (Fig. 40). 9th tergite (Fig. 41) well sclerotized along margins, laterally without projection (Fig. 42), apically with two bisinuate strongly sclerotized lines visible from dorsal view, apical half covered with pseudopores, sclerotization of tergite medially divided, two parts held together by weakly sclerotized part; 10th tergite basally faintly inwardly arcuate (Fig. 41). Tips of apical end of spiculum gastrale (Fig. 43) without strongly sclerotized parts, apical end strongly inwardly arcuate, basal end outwardly arcuate. Aedeagus (Figs 45-46) similar to that of Reichardtiolus duriculus , but laterally more curved and medially thickened (compare Figs 23 and 46).

Differential diagnosis.

As with preceding species.

Biology.

Unknown, presumably similar to the congeners, the examined specimens were collected at light in winter months.

Distribution.

Saudi Arabia, environs of Riyadh (Fig. 72).

Etymology.

Patronymic, named after the head of the entomology department at KSMA, H. M. Al Dhafer.