Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 97. (Budapest 2005)

Kirejsthuk, A. G.: On the fauna of Nitidulidae (Insecta, Coleoptera) from Taiwan with some taxonomical notes

2.5 times as wide as long, its posterior edge emargirtate. Metasternum shallowly and widely medially depressed. Hypopygidium very shallowly emarginate before very wide and short median movable lobe, without distinct median process at base of movable lobe. Apex of last abdominal segment: Fig. 49. Ventral plate and spiculum gastrale: Fig. 50. Tegmen moderately sclerotized (Figs 51-54). Female - Differs from the male in widely rounded apices of pygidium and hypopygidium as well as in absence of paramedial brushes of long hairs on elytra. Variability - Length 4.2-5.5, width 2.8-3.4 mm. The body coloration varies from light brownish to dark brown, sometimes the body becoming completely dark and almost unicolorous (paratype from Thailand) or light specimens (paratypes from Brunei and "Borneo") look like almost straw reddish with some infuscation on dorsal sclerites. The small dark spot in the centre of elytral patch can be scarcely visible. Nevertheless, the blackish long and stout hairs on dorsum are conspicuous in all extremes of variability. Diagnosis - This new species can be easily recognized among congeners due to its characteristic stout and very conspicuous blackish hairs on dorsum. Another very characteristic feature is its comparatively large and wide last antennomere, which is rather different from that in other congeners (although in A. plagiants GROUVELLE, 1890 it is somewhat similar). Furthermore, in contrast to many other congeners, including all species treated here, this new species has comparatively large eye facets and sometimes with quite visible interfacettal setae. In comparison to other members of the genus treated here, it is well characterized by the distinct puncturation and smooth interspaces of ventrites, comparatively large eye facets, rather sparse puncturation and more smoothed microreticulation on interspaces between punctures (therefore in its description proportions of punctures compared with eye facets are rather different from those in the rest of the species). By coloration and many other characters this new species is similar to A. plagiatus, however, it is quite distinct from the latter not only in the long dark hairs on dorsum and peculiar puncturation of ventrites, but also in the larger body, pattern of lightened Figs 64-86. 64—71. Amphicrossus lobanovi sp. n.: 64 = specimen from Sumatra, ventral plate and spiculum gastrale, ventral, 65 = tegmen (left: ventral, right: dorsal), 66 = ibid., lateral, 67 = apex of lateral lobe of tegmen, from view indicated by arrow in Fig. 66, 68 = holotype, tegmen, lateral, 69 = apex of lateral lobe of tegmen, from view indicated by arrow in Fig. 68, 70 = specimen from Panaon (Philippines), tegmen, lateral, 71 = specimen from Biliran (Philippines), apex of lateral lobe of tegmen, from view indicated by arrow in Fig. 68. 72-81. Amphicrossus montanus sp. n., male, holotype: 72 = body with one of paramedial brushes of long hairs on elytron, dorsal, 73 = elytron with one of paramedial brushes of long hairs, lateral, 74 = antennái club, 75 = prosternai process, ventral, 76 = apex of last abdominal segment, ventral, 77 = median process at bottom of apical emargination of hypopygidium, 78 = ventral plate and spiculum gastrale, ventral, 79 = tegmen (left: ventral, right: dorsal), 80 = ibid., lateral, 81 = apex of lateral lobe of tegmen, from view indicated by arrow in Fig. 80. 82-86. Amphicrossus murrayi sp. n., male, holotype: 82 = elytron with one of paramedial brushes of long hairs, lateral, 83 = ventral plate and spiculum gastrale, ventral, 84 = tegmen (left: ventral, right: dorsal), 85 = ibid., lateral, 86 = apex of lateral lobe of tegmen, from view indicated by arrow in Fig. 85. Scales: A - to Figs 72, 73, 82, B - to Figs 74-76, C - to Figs 64-66, 68, 70, 78-80, 83-85