Neobarombiella bilineata ( Bryant, 1958 ) Bolz & Wagner, 2012

Bolz, Helmut & Wagner, Thomas, 2012, 3463, Zootaxa 3463, pp. 1-112 : 74-75

Neobarombiella bilineata ( Bryant, 1958) comb. n.

( Figs 68, 121–124)

Barombia bilineata Bryant, 1958: 49 .

Total length. 3.95–5.85 mm (mean: 5.02 mm) (n=9).

Head. Head, labial and maxillary palpi yellow in 75% of material studied, dark brown to black in the rest. Antenna yellow, terminal antennomeres brown ( Fig. 121); length of second to third antennomere 0.63–0.70 (mean: 0.66), and length of third to fourth antennomere 0.56–0.67 (mean: 0.61; Fig. 123). Eyes small and widely separated ( Fig. 121), width of eye to interocular distance 0.41–0.48 (mean: 0.44).

Thorax. Pronotum yellow or brownish-yellow; slightly trapezoidal, finely punctuated; pronotal width 1.30–1.84 mm (mean: 1.58 mm), pronotal length 0.70–1.02 mm (mean: 0.89 mm), and pronotal length to width 0.53–0.57 (mean: 0.55). Elytron yellow with broad black sutural margin, very narrow external elytral margins, and broad longitudinal black line in middle of each elytron, beginning at elytral base and terminating short distance from apex ( Fig. 121); coarsely punctuated; elytral length 3.00– 4.40 mm (mean: 3.79 mm), elytral width 2.00– 2.70 mm (mean: 2.41 mm), and maximal width of both elytra to length of elytron 0.60–0.68 (mean: 0.64). Meso- and metathorax brownish-yellow in most specimens, rest black; legs brownish-yellow, and length of basimetatarsus to metatibia 0.44–0.50 (mean: 0.47).

Abdomen. Brownish-yellow.

Male genitalia. Median lobe short, almost parallel-sided in dorsal view; blunt apically with deep U-shaped incision, lacking strongly sclerotized structures; apex down-curved in lateral view, elongate and slightly sclerotized; endophallic brush completely covered by tectum and median lobe, with two elongate sclerotized spiculae ( Fig. 122).

Diagnosis. Neobarombiella bilineata can easily be characterised by its elytral colouring, with a single longitudinal black line in the middle of each elytron. Only N. vittigera , N. pictipennis , N. lineata sp. n. and N. reichartzi sp. n. have similar elytral colouring. Neobarombiella vittigera can be distinguished by having two longitudinal lines on each elytron ( Fig. 72), being much smaller on average, total length 5.15–8.25 mm (3.95–5.85 mm in N. bilineata comb. n.), and having much smaller eyes, width of eye to interocular distance 0.56–0.65 (0.41–0.48 in N. bilineata ) ( Figs 72, 121). Neobarombiella reichartzi sp. n. is similar in appearance but only has rudimentary or no sutural and outer elytral margins; its pronotum is shorter and broader, pronotal length to width 0.43–0.48 (0.53–0.57 in N. bilineata );) and the eyes are larger and not as widely separated, width of eye to interocular distance 0.53–0.65 (0.41–0.48 in N. bilineata ) ( Figs 121, 177). The antennomeres of N. pictipennis are characteristically more slender and elongate, length of second to third antennomere 0.78 (0.63–0.70 (mean: 0.66) in N. bilineata ), length of third to fourth antennomere 0.75 (0.56–0.67 (mean: 0.61) in N. bilineata ) ( Fig. 31, 123). N lineata sp. n. appears similar, but has broader, shorter antennomeres, length of second to third antennomere 0.75–0.83 (mean: 0.80)(0.63–0.70 (mean: 0.66) in N. bilineata ), length of third to fourth antennomere 0.60–0.67 (mean: 0.62) (0.56–0.67 (mean: 0.61) in N. bilineata )( Figs 123, 163). Neobarombiella vittigera , N. lineata sp. n. and N. reichartzi sp. n. can also be distinguished by the characteristics of the median lobe ( Figs 73, 122, 162, 178), except N. pictipennis where males are not known.

Distribution. Recorded from the south-eastern part of the Democratic Republic of the Congo ( Fig. 68).

Type material examined. Holotype, male: “ Holotypus / Congo belge: P. N. U., Kankunda (1.300 m.), 16–19–xi–1947, Mis. G. F. de Witte. 1007a / Coll. Mus. Congo, (ex coll. I. P. N. C. B.) / Barombia , bilineata, Bry, G. E. Bryant det. 195 / Type / AfriGa, specimen ID, 1638, specimen data, documented, 6.IV.2006 ” ( MRAC; Fig. 124) . Holotype by original description and designation since Bryant wrote the word “type” only on one specimen from Kankunda. Type locality: Democratic Republic of the Congo: Kankunda, 8°55'S / 27°07'E .— Paratypes. Democratic Republic of the Congo: 2 ex., P. N. Upemba, Kamitangulu, 8°55'S / 27°07'E, VI .1945 ( MRAC); 9 ex., P. N. Upemba, Kankunda , XI.1947, G. F. de Witte ( MRAC) ; 1 ex., P. N. Upemba, Lusinga, 8°56'S / 27°12'E, VI .1945, G. F. de Witte ( MRAC) .

Other material examined: 1 ex., Elisabethville, 11°40'S / 27°28'E, Miss. Agric. ( MRAC) .