Scymnomorphus, Weise, 1897

Szawaryn, Karol, 2018, Missing geographic link: minute lady beetles (Coleoptera: Coccinellidae: Microweiseinae) from Mount Wilhelm, New Guinea, Acta Entomologica Musei Nationalis Pragae 58 (1), pp. 227-236 : 228-230

Key to Australasian species of Scymnomorphus

1 Mid and hind femora stout and broadened, about 2 times longer than their width ( Fig. 5B ), antenna with antennomere 3 shorter than pedicel, antennomere 8 very broad, antennomeres 8–10 forming a club ( Fig. 2J ). .... ................................................................. S. kausi sp. nov.

– Mid and hind femora slender, about 3 times longer than their width ( Fig. 4D ), antenna with antennomere 3 as long or longer than pedicel ( Figs 4D,F ), antennomere 8 narrow, antennomeres 9–10 forming a club ( Figs 2B , 3A ). ................................................................... 2

2 Antenna with terminal antennomere elongate, about 3 times longer than the penultimate one ( Fig. 3A ), body over 1.5 mm long. ........................ S. papuensis sp. nov.

– Antenna with terminal antennomere only slightly elongate, about 1.5–2.0 times longer than the penultimate one ( Fig. 2B ), body smaller than 1.5 mm long. ............ 3

3 Body yellowish or lightly brown. .................................. 4

– Body deep brown to black or with elytra differently colored than pronotum. ..................................................... 5

4 Elytra with epipleural carina well separated from elytral margin; male glandular openings in middle of ventrite 5; male genitalia: ŚLIPIŃSKI & TOMASZEWSKA (2005: Figs 45, 46, 48). ...................................................... ....................... S. fulvus Ślipiński & Tomaszewska, 2005

– Elytra with epipleural carina close to margin; males without glandular openings on ventrite 5; male genitalia: ŚLIPIŃSKI & TOMASZEWSKA (2005: Figs 57, 58). ..... ....................... S. luteus Ślipiński & Tomaszewska, 2005

5 Elytra brown with dark brown or black longitudinal macula on each elytron ( Fig. 1A ), sometimes black macula covering almost whole dorsal surface of elytron but with lateral margin always brown ( Figs 1D, E ); males with single large glandular opening on ventrite 5 ( Fig. 2H ). .................................. S. bimaculatus sp. nov.

– Elytra uniformly colored; males without glandular openings on ventrite 5. .................................................. 6

6 Elytra brown, pronotum dark brown. .......................... 7

– Elytra deep piceous to black; length 1.2 mm or less; male genitalia different from those illustrated by ŚLI- PIŃSKI & TOMASZEWSKA (2005: Figs 54–56). ............. 8

7 Abdominal postcoxal lines not reaching lateral margin of abdomen, male genitalia: CHAZEAU (1979: Figs. 2–5 ). ................................... S. prapawan Chazeau, 1979

– Abdominal postcoxal lines reaching lateral margin of abdomen, male genitalia: ŚLIPIŃSKI & TOMASZEWSKA (2005: Figs 54–56). ............................................................ ....................... S. hirtus Ślipiński & Tomaszewska, 2005

8 Body uniformly deep dark brown to black; epipleural carina very close to lateral margin of elytron; male genitalia: ŚLIPIŃSKI & TOMASZEWSKA (2005: Figs 50– 52). ............... S. storey Ślipiński & Tomaszewska, 2005

– Pronotum and head lighter than elytra; epipleural carina distinctly separated from elytral margin; male genitalia: ŚLIPIŃSKI & TOMASZEWSKA (2005: Figs 44, 47, 49). .................... S. ker Ślipiński & Tomaszewska, 2005

Figures

Fig. 5. Morphology of Scymnomorphus species. A–D, F – S. kausi sp. nov.: A – habitus, dorsal; B – ventral view; C – magnification of metaventral punctures; D – glandular openings on abdominal ventrite 5 in male; F – head, anterior view. E – S. bimaculatus sp. nov., glandular opening on abdominal ventrite 5 in male.

Fig. 2. Morphology of Scymnomorphus species. A–H – S. bimaculatus sp. nov.: A – abdomen, female; B – antenna; C – ovipositor; D – spermatheca; E – tegmen; inner view; F – tegmen, lateral view; G – penis, lateral view; H – abdomen, male. I–P – S. kausi sp. nov.: I – abdomen, female; J – antenna; K – ovipositor; L – spermatheca; M – tegmen, inner view; N – tegmen, lateral view; O – penis, lateral view; P – abdomen, male (arrows indicate glandular opening pores).

Fig. 4. Morphology of Scymnomorphus species. A–C, E–G – S. bimaculatus sp. nov.: A – habitus, dorsal; B – magnification of the elytral punctures; C – mouthparts, ventral; E – magnification of the metaventral punctures; F – meso- and metaventrite; G – head, anterior view. D, H–J – S. papuensis sp. nov.: D – habitus, ventral; H – magnification of the metaventral punctures; I – meso- and metaventrite; J – head, anterior view.

Fig. 3. Morphology of Scymnomorphus species. A–C – S. papuensis sp. nov.: A – antenna; B – female genitalia; C – abdomen, female. D – S. kausi sp. nov., head and mouthparts, ventral (lp – labial palp, m – mentum, pm – prementum, sm – submentum).

Fig.1. Habitus of Scymnomorphus species from Mt. Wilhelm, New Guinea. A–F – S. bimaculatus sp. nov.; G–I – S. kausi sp. nov.; J–L – S. papuensis sp. nov. A, D, G, J – dorsal view; B, E, H, K – lateral view; C, F, I, L – frontal view.