Mecynotarsus hirtipennis, Kejval & Cz, 2013

Kejval, Zbyněk, 2013, Taxonomic revision of the Australian Notoxinae (Coleoptera: Anthicidae), Acta Entomologica Musei Nationalis Pragae (suppl.) 53, pp. 1-98 : 46-47

Mecynotarsus hirtipennis sp. nov.

( Figs 58, 59 , 176 )

Type locality. Australia, Northern Territory, Hull River, 33 km ESE of Docker River, 24°58′S 129°23′E.

Type material. HOLOTYPE: ♂, ‘ 24.58S 129.23E Hull River 33 km ESE of Docker River NT 17.xi.1977 T. A. Weir [p] // ANIC Specimen [p; green label]’ ( ANIC). PARATYPES: 1 ♀, same data as holotype ( ANIC) ; 2 ♂♂, ‘ Hull River 33 km ESE of Docker River NT 17 Nov. 1977 J. A. L. Watson [h] // ANIC Specimen [p; green label]’ ( ANIC) ; 2 ♂♂ 2 ♀♀, ‘Regans Ford W.A. 18 Oct. 1978 on Brand Hwy. at light K. & E. Carnaby [p] // AUST. NAT. INS.COLL. [p]’ ( ANIC) ; 4 ♂♂ 6 ♀♀, ‘(23.15S 119.52E) 13 km. E. by N. of Newman, WA. 12.xi.70. E. B. Britton [p] // ANIC specimen [p; green label]’ ( ANIC, 2 spec. ZKDC) ; 1 ♂, ‘ West Peawah R. WA 14.iv.1976 K. & E. Carnaby [p] // AUST. NAT. INS. COLL. [p; green label]’ ( ANIC) ; 1 ♀, ‘ Qld. Greenvale 70 km SW at light. 12-21 Apr 1995 A. J. Watts [p] // SAMA Database No. 25-028973 [p]’ ( SAMA) ; 1♀, same data, but database number 25-028985 ( SAMA) ; 1♂, ‘ Qld.Greenvale 70 km SW at light. 28 Mar-7 Apr 1995 A. J. Watts [p] // SAMA Database No. 25-028952 [p]’ ( SAMA) ; 1 ♂, ‘ Qld. Greenvale 70 km SW at light 21-31 Oct. 95 A. J. Watts [p] // SAMA Database No. 25-029036 [p]’ ( SAMA) ; 2 spec., ‘QLD. 70 km SW GREENVALE 15-24 FEB 95 A. J. Watts [p] // SAMA Database No. 25-029043 [p]’ ( SAMA) ; 1 ♀, ‘AUSTR. (NT), W McDonell NP, SIMPSON GAP, 23°40′S 133°43′E, 600 m, 3.- 4.1.2009, S. Bílý leg.’ ( NMPC) ; 1 ♂ 2 ♀♀, ‘ AUSTRALIA, N. Territory West MacDonnell Range Nat. Park , SIMPSON GAP 23°40′S 133°43′E, 600 m, 3.- 5.01.2009, St. Jakl leg. [p]’ ( ZKDC, NMPC) ; 3 ♂♂, same data, except: 11.01.2009 ( ZKDC) .

Description (holotype, male). Body length 2.6 mm. Body reddish to reddish brown, elytra with vague darker markings; legs and antennae reddish.

Antero-lateral margins of frons simple. Gular rugules of different size, anteriorly larger, ordered and fused as in Fig. 139 . Clypeal granules minute and distinct. Setation of head generally rather fine and sparse, hairy, mostly appressed on vertex, with a few longer, raised setae medially near base. Antennae moderately long; antennomeres III–V 1.8 times, X 1.3 times as long as wide; setation mostly fine, antennomere I conspicuously setose, including several long bristly setae.

Pronotum globose, 1.5 times as long as wide, its lateral margins rather strongly, evenly convex in dorsal view; posterior collar very narrow and inconspicuous. Pronotal horn robust and wide, subtriangular, its posterior angles distinct in dorsal view; horn margins armed with 3 lobules on each side, posterior lobules very wide, apical lobule simple, widely rounded; horn crest very conspicuous, strongly raised, short and situated rather posteriorly, with rugules mostly fused and forming complete semicircular rim; submarginal rugules mostly coarse and distinctly spaced; single large, longitudinal median rugule and several minute granules scattered posteriorly. Setation whitish to pale yellowish, largely scaly, fine and inconspicuous on pronotal horn dorsally; scales on pronotal disc rather uniform, appressed, elongate, truncate apically, glossy, distinctly spaced (surface visible); antebasal paired setae absent medially, difficult to recognize laterally owing to presence of numerous additional tactile setae.

Elytra 1.7 times as long as wide; omoplates and postbasal impression absent. Setation whitish and pale brownish, forming very vague brownish marking, coarse to nearly scaly, appressed, evenly ordered; scales linear, rounded to subtruncate apically, somewhat glossy, rather widely spaced (surface clearly visible, Fig. 176 ); tactile setae rather numerous and distinct, also present in apical third.

Male characters. Sternum VII nearly simple. Tergum VIII and aedeagus as in Figs 58, 59 .

Variation. Body length (♂ ♀) 2.2–2.6 mm. Elytra rarely unicolorous and scales uniformly whitish to silvery (single specimen from Regans Ford).

Elytra in females nearly subtruncate apically, with apical margin slightly concave near median apical angle.

Differential diagnosis. Mecynotarsus hirtipennis sp. nov. is undoubtedly close to M. bullatus sp. nov. as suggested by similarity of both external (triangular pronotal horn, semicircular crest rim, numerous tactile setae) and male characters. It differs from the latter species especially by the somewhat shorter, uniformly appressed, simple setation of the pronotal disc, more slender antennae (basal antennomeres), longer tactile setae on the elytra, nearly subtruncate elytral apices in the females, and by the unevenly narrowing, apically rounded parameres.

Etymology. The species name is a Latin adjective hirtipennis , - is, - e, composed from the Latin words hirtus (= hirsute) and pennes (= wings, elytra); named in reference to the numerous, very long tactile setae of the elytra.

Distribution. Australia: Northern Territory, Queensland, Western Australia.

Figures

Figs 53–59. 53–54 – Mecynotarsus grandior sp. nov.: 53 – tergum VIII, 54 – aedeagus in dorsal view. 55–57 – M. granulatus sp. nov.: 55 – tergum VIII, 56 – tegmen in dorsal view, 57 – median lobe in dorsal view. 58–59 – M. hirtipennis sp. nov.: 58 – tergum VIII, 59 – aedeagus in dorsal view. Scale (0.5 mm): A – Fig. 58; B – Fig. 53; C – Figs 55–57; D – Figs 54, 59.

Figs 168–176. Setation of elytra: 168 – Mecynotarsus amabilis Lea, 1895 (Shoalhaven River), 169 – M. apicipennis Lea, 1922, 170 – M. auripilosus sp. nov. (paratype, Kambah Pool), 171 – M. bidens sp. nov., 172 – M. bullatus sp. nov. (paratype, Minilya River), 173 – M. concolor King, 1869 (Olary), 174 – M. excavatus sp. nov., 175 – M. granulatus sp. nov., 176 – M. hirtipennis sp. nov.

Figs 133–140. 133 – Mecynotarsus setulosus sp. nov., head in lateral view (paratype, Fowlers Gap), 134 – M. excavatus sp. nov., apex of elytra in female (paratype, Aoue-Enga), 135 – M. grandior sp. nov., apex of elytron in male (paratype, Kimberley Research Station), 136 – M. obesus sp. nov., metatibia with tarsus (paratype, Hull River), 137 – M. excavatus sp. nov., male protibia (paratype, Aoue-Enga). 138–140 – head in ventral view: 138 – M. auripilosus sp. nov. (paratype, Kambah Pool), 139 – M. bullatus sp. nov. (paratype, Regans Ford), 140 – M. ziczac King, 1869 (Swain Reefs).