Dindymus (Dindymus) sundaensis, Stehlík & Jindra, 2008

Stehlík, Jaroslav L. & Jindra, Zdeněk, 2008, New taxa of the Largidae and Pyrrhocoridae (Hemiptera: Heteroptera) from the Oriental Region, Acta Entomologica Musei Nationalis Pragae 48 (2), pp. 611-648 : 637-638

Dindymus (Dindymus) sundaensis sp. nov.

( Figs. 30, 34) Type material. HOLOTYPE: ♀, INDONESIA: NUSA TENGGARA TIMUR PROVINCE: ALOR: Moru env., 500 m a.s.l., 22.iii.-3.iv.2006, S. Jakl lgt. (PPUA). PARATYPE: The same data, 1 ♀ (ZJPC).

Description. Female. Colouration ( Fig. 30). Head, antennomere 1 (except of apex), antennomere 2 in basal half, and basal half of labial segment 1 dark red. Antennomere 1 apically, antennomere 2 in apical half, entire antennomeres 3 and 4, pronotum, scutellum, labium (except basal half), entire sternum, and large spot medially on ventrites (not reaching posterior margin of ventrite VI) black. Clavus and corium completely red; entire membrane pale grey with small black spot basally. Legs red, femora basally blackened (colouration continually changing to red towards apex). Ventrites (except of large median black spot) and laterotergites orange.

Structure. Head relatively narrow, longer than wide, rather elongated in front of eyes, not very high in lateral view; frons less gibbous and ventral outline slightly rounded; eyes less protruding. Anterior pronotal margin strongly concave; pronotal collar somewhat depressed; callar lobe more strongly gibbous; pronotal lobe distinctly elevated towards base and depressed laterally. Lateral pronotal margin wide, slightly concave at level of callar lobe base, distinctly raised dorsally, its anterior angles somewhat protruding. Mesoscutum strongly depressed; scutellum smooth, gibbous, apically wrinkled. Apices of profemora ventrally with one tooth.

Female genitalia ( Fig. 34). Both halves of valvifer I widely divergent not far from base (thus entire valvifer II visible), its dorsal margin skewed sideways and narrowly bent inwards. Valvifer II large, its lateral margins strongly elevated, skewed towards middle, straight (except of slightly concave dorsal part). Valvifer II strongly depressed medially. Laterotergite VIII triangular; laterotergite IX more prolonged ventrally; inner margin incised, with minute pale pubescence and with round depression on dorsal margin.

Punctation. Pronotal lobe regularly punctured except of impunctate posterior pronotal margin and coarser punctures in lateral depressions. Mesoscutum with coarse punctures; entire surface of clavus and corium with regular, minute, colourless punctation.

Measurements (all in mm). Females (holotype first, paratype second). Body length 15.82/14.42; head: length 2.21/2.21, width (including eyes) 2.13/2.00, interocular width 1.35/1.24; lengths of antennomeres: 1 – 3.24/2.97, 2 – 2.16/2.00, 3 – 1.94/1.84, 4 – 2.86/2.75; pronotum: length 3.08/2.92, width 4.54/4.18; scutellum: length 1.78/1.78, width 2.11/2.16; corium: length 7.88/7.29, width 2.81/2.70.

Differential diagnosis. Dindymus (Dindymus) bicolor (Herrich-Schaeffer, 1840) , known from Java and Timor, has also a black pronotum and scutellum, combined with a red clavus and corium. However, it differs from D. (D.) sundaensis sp. nov. ( Fig. 30) by a smaller size, shape of the head and pronotum, and slender antennae. The diagnostic characters of D. (D.) bicolor could be summarized as follows: head wider in dorsal view, basally narrowed, less elongated in front of eyes, distinctly higher in lateral view because both distinctly gibbous frons and ventral side. Pronotum generally narrower, more strongly narrowed anteriorly, lateral pronotal margins much narrower. Colouration of head red except of blackish basal part, antennomere 4 yellow except of black apex, legs including tibiae black, and posterior pleural flange III (in males also posterior pleural flange I) creamy.

Etymology. Patronymic, named after the Little Sunda Islands.

Distribution. Indonesia, Little Sunda, Alor Island.