Cephennomicrus sp. 5

(Figs 10, 99–102)

Material studied. Late Eocene of Europe, Rovno amber: sex unknown; inclusion in rectangular prism of amber 13 mm long (Fig. 10), collection number DU-32 (SIZK).

Description. Body (Figs 99–102) elongate and moderately strongly convex, dark brown; BL 0.76 mm.

Head (Figs 99–102) broadest at eyes, HL 0.10 mm, HW 0.18 mm; frons and vertex confluent, weakly convex and together strongly transverse; supraantennal tubercles weakly marked; compound eyes large and strongly convex, moderately coarsely faceted; punctures on frons sparse and fine; setae sparse, short and nearly recumbent. Antennae (Figs 99–102) much shorter than half BL, AnL about 0.25 mm, shapes of most antennomeres difficult to assess, but IX seems at least as long as broad or elongate, X transverse, XI about as long as IX–X combined or slightly shorter, about as broad as X and less than twice as long as broad, nearly or completely symmetrical.

Pronotum (Figs 99, 102) subrectangular, but exact shape difficult to assess; PL 0.23 mm, PW 0.25 mm; pronotal disc seems to be broadest in front of middle, sides rounded in anterior third and weakly sinuate posteriorly; posterior pronotal corners obtuse-angled; posterior margin shallowly bisinuate with indistinct flattening in front of scutellum; base with two pairs of small and shallow but distinct antebasal pits (Fig. 101; abp), only inner pair connected by narrow antebasal groove (Fig. 101; abg). Punctures on pronotal disc fine but distinct, separated by spaces 1.5–2 × as wide as diameters of punctures; setae short, moderately dense, nearly recumbent (Figs 99, 101).

Elytra (Figs 99, 101) elongate oval, moderately convex, EL about 0.58 mm, EW about 0.30 mm, EI about 1.46; punctures and setae similar to those on pronotum (Figs 99, 101) but slightly denser.

Legs (Figs 100, 102) moderately long, slender, unmodified; all tibiae straight or weakly curved. Remarks. See remarks for Cephennomicrus sp. 3.