Zeadolopus punctiventris, Švec, 2012

Švec, Zdeněk, 2012, New Leiodinae (Coleoptera: Leiodidae) from India and Papua New Guinea, Acta Entomologica Musei Nationalis Pragae 52 (2), pp. 411-424 : 423-424

Zeadolopus punctiventris sp.nov.

( Figs. 17 , 30–32 )

Type locality. Papua New Guinea, Sandaum province, north of Mianmin, 1100 m a.s.l.

Type material. HOLOTYPE: J ( NMPC): ‘ PAPUA N.G., Sandaun prov. / N Mianmin, 1100 m / 20.v.1998, sifted / leg. A. Riedel’ . PARATYPES: 1 J 1 ♀ ( NMPC, ZSPC): same data as the holotype.

Description. Body length 1.6–1.9 mm (holotype 1.9 mm). Length of body parts (holotype): head 0.3 mm, pronotum 0.5 mm, elytra 1.1 mm, antenna 0.4 mm. Maximum width of body parts (holotype): head 0.6 mm, pronotum 1.1 mm, elytra 1.1 mm.

Body very shortly oval ( Fig. 30 ), dorsum chestnut. Elytra slightly opalescent. Venter light chestnut.Antennae yellow-reddish, legs pale chestnut. Dorsum with microsculpture, punctuate, punctures partly setiferous.

Head. Dorsal surface with punctures separated by 2–3× their diameter. Interstices distinctly microreticulate. Lateral sides of clypeus and medial margins of eyes with few longer setae. Ratio of width of antennomeres X: XI = 1.3.

Pronotum. Widest at base. Base slightly flatly concave before posterior angles. Lateral sides roundly tapered anteriorly in dorsal and lateral views, posterior angles acutely pointed in dorsal view, obtuse and very broadly rounded in lateral view. Puncturation a little sparser and finer than that of head. Microreticulation finer than that on head.

Elytra. Broadest at basal third of elytral length. Punctures coarser than on head. With hardly detectable inobtrusive double rows of punctures disapearing far from base. Punctures of intervals of similar size as those in rows. Serial punctures separated by about 1–2× their diameter; interval puncturation a little sparser. Sutural stria shallow, detectable approximately at apical fourth. Microreticulation very feebly developed. Lateral channel without larger punctures or foveae ( Fig. 31 ).

Legs. Hind margin of posterior femora with strong long curved tooth at apex in male; broadly rounded in female; mid-femora simple.

Metaventrite. With strong, irregularly arranged large punctures separated by about 0.5–1× their diameter, irregularly dispersed laterally, becoming smaller and sparser medially ( Fig. 32 ).

Abdomen: First visible abdominal ventrite with row of large punctures close to anterior margin ( Fig. 32 ).

Genitalia. Aedeagus as in Fig. 17 . Female genitalia not examined.

Variability. The microreticulation is feebly developed on the whole dorsum in the female paratype.

Differential diagnosis. Zeadolopus punctiventris sp. nov. belongs to an informal group of the species lacking large foveae on the lateral sides of the elytra, containing in the Australian region only one species – Z. balkei Švec, 2002 . The new species is similar to Z. balkei by the presence of the hardly detectable unobtrusive double elytral rows (compared to well marked rows in Z. balkei ). The new species also differs from Z. balkei in the much larger body and by the presence of microreticulation on the dorsum. The aedeagal parameres of Z. punctiventris sp. nov. are longer than the median lobe, which is roundly tapered to the apex, in contrast to the parameres being distinctly shorter and the rectangular median lobe of Z. balkei .

Etymology. The species name refers to the striking puncturation of the venter.

Biology. Not known. The specimens were collected by sifting.

Figures

Figs. 11–17. Genitalia of Agathidium and Zeadolopus. 11–13 – Agathidium (Macroceble) guttigerum sp nov. (11 – aedeagus, lateral view; 12 – apex of aedeagus, dorsal view; 13 – spermatheca). 14–16 – A. (Macroceble) acutangulum sp. nov.(14 – aedeagus, lateral view; 15 – apex of aedeagus, dorsal view; 16 – spermatheca). 17 – Zeadolopus punctiventris sp. nov., aedeagus, dorsal view. Scale = 0.1 mm.

Figs. 30–32. Habitus of the holotype of Zeadolopus punctiventris sp. nov. (30 – dorsal view; 31 – lateral view; 32 – ventral view)