Derelomus lindbergi Roudier, 1957

Derelomus lindbergi Roudier, 1957

Fig. 7 View Fig

Derelomus lindbergi Roudier, 1957: 15 .

Diagnosis

This species can be distinguished by the combination of appendiculate claws, the lateral carina on the pronotum covered with whitish scales, the penis body rounded at the apex, not expanded into a spatula and the elytral pattern absent or reduced to a dark dot on the 4 th elytral interstriae.

Material examined

Holotype

REPUBLIC OF CABO VERDE • ♂; “ Ins. Cabo Verde; S. Tiago Praia [ 14°56′24″ N 23°29′49″ W]; 5- 14.2.1954; Lindberg” “TYPE [red label]” “ Derelomus ; lindbergi ; n. sp.; A. Roudier det.”; MZH.

GoogleMaps

Paratypes

REPUBLIC OF CABO VERDE • 2 ♂♂, 6 ♀♀; Santiago Island, Praia ; 14°56′24″ N, 23°29′49″ W; 5–14 Feb. 1954; H. Lindberg coll.; MZH GoogleMaps • 29 specs; same collection data as for preceding ( Roudier 1957; not seen), MZH GoogleMaps • 1 spec. (sex not determined); San Antão Island, Porto Novo; 17°01′08″ N, 25°04′37″ W; 4–7 Jan. 1954; H. Lindberg coll.; MZH. GoogleMaps

Other material

BURKINA FASO • 3 ♂♂, 1 ♀, 10 specs; Passoré, 8 km S of Ouest Yako; 12°51′44″ N, 2°18′35″ W; 7 Aug. 2005; F. and S. Génier coll.; light trap, Sudanian zone north; JHAR07714 ; CMNC GoogleMaps • 1 ♀; Nahouri, Nazinga Forest , Naguio ; 11°9′36.0″ N, 1°36′0.0″ W; 24 Jul. 2006; F. and S. Génier coll.; light trap, Sudanian zone, savanna with trees; JHAR07711 ; CMNC GoogleMaps • 1 ♀; Nahouri, Nazinga, Forest , Barka ; 11°11′16.8″ N, 1°34′48.0″ W; 24 Jul. 2006; F. and S. Génier coll.; light trap, Sudanian zone, savanna with trees; JHAR07712 ; CMNC GoogleMaps • 1 ♂, 11 specs; Loroum, Toulfé; 13°53′43″ N, 1°52′25″ W; 15 Jul. 2005; F. and S. Génier coll.; light trap, Sahelian steppe with trees; JHAR07713 ; CMN GoogleMaps • 1 spec.; Bale, Boromo; 11°48′08″ N, 002°51′58″ W; 10 Aug. 2005; F. Genier coll.; light trap Sudanian area; CMNC. GoogleMaps

CAMEROON • 1 ♂; Maroua; 10°34′48″ N, 14°19′45″ E; 1 Aug. 1979; P.B. de Miré coll.; CBGP. GoogleMaps

SENEGAL • 1 ♂; Niokolo Koba National Park , Badi; 13°08′17″ N, 13°13′26″ W; Mar.–Apr. 1957; NHMUK. GoogleMaps

Redescription ( ♂)

MEASUREMENTS. Body length 2.0 mm.

COLOR. Body integument uniformly pale brown, elytra in some specimens with dark spot beyond middle of length of interstriae 4; vestiture of dorsum made of white setiform scales on head and pronotum and minute white setae on elytra, hardly visible, forming one row on each interstria.

HEAD. Rostrum as long as pronotum in lateral view, moderately downcurved, curvature slightly stronger in basal half; in dorsal view 4.5 × as long as wide, integument densely punctate, lacking carinae along median line, covered with short suberect whitish setae oriented toward forehead; antennae inserted near apical ¼ of length; head capsule coarsely punctate in dorsal view, with suberect whitish scales oriented backward; eyes moderately convex, slightly exceeding lateral curve of head capsule in dorsal view; antennal funicle with first segment 1.5 × as long as wide, equal in length to segments 2–3 together, 2 longer than wide, 3–7 transverse.

PRONOTUM. Wider than long (W:L ratio: 1.18), widest near middle of length, 0.76 × as wide there as elytra at humeral angles, lateral carina smooth and regular; sides slightly convex, apical constriction shallow; integument with large circular punctures, arranged in irregular manner, space between punctures dull, narrower or wider than diameter of punctures; scale cover made of white setae longer than diameter of punctures, more condensed along lateral carinae.

METATHORAX. Metanepisterna with scarce, not overlapping setiform scales.

ELYTRA. Elongate (W: L ratio: 0.67); sides slightly convex, widest beyond middle of length; humeri raised; apex jointly rounded; striae with punctures as wide as interstriae; interstriae slightly convex; scutellar shield rounded, bearing a few setiform scales.

ABDOMEN. Underside covered with subcontiguous recumbent whitish setae. Stridulatory plate with lines of 4 granules, as long as median line; central sclerotized area regularly rounded at apex.

LEGS. Profemora thickened near middle of length; protibiae with external margin straight, internal slightly bisinuate; claws appendiculate.

TERMINALIA. Body of penis elongate (W: L ratio: 0.20); sides slightly convex in dorsal view, widest near apical ⅔ of length, apex rounded; in lateral view curvature strong in basal ⅓ of length, straight in apical ⅔; width narrowing regularly from apical 2/5 to apex; apex slightly curved upward ( Fig. 7D View Fig ).

Sexual dimorphism

Females can be distinguished from males by the rostrum which is slightly longer in lateral view ( Fig. 7C View Fig ).

Life history

This species was collected on Vachellia sp. (“ Acacia ”, Roudier 1957) from January to April and from July to August.

Distribution

Burkina Faso, Cape Verde archipelago (Santiago and Santo Antão islands), northern Cameroon and Senegal.