Chilocorini

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Taxonavigation

Ordo: Coleoptera
Familia: Coccinellidae

Name

Mulsant, 1846 – Wikispecies link – Pensoft Profile

Diagnosis

Body size small to medium (2.0–8.0 mm), with downward directed head inserted into prothorax to some extent; dorsum usually without obvious pubescence. Head wider than long, flattened ventrally; clypeus variously expanded laterally and wholly concealing antennal insertions. Mandibles triangular, strong with an apical tooth and heavily developed molar teeth; maxillary palps relatively long, terminal palpomere parallel sided to weakly enlarged apically; labial palp clearly separated basally, inserted on ventral side of prementum. Antenna composed of 7–10 antennomeres, markedly short with a fusiform club composed of three terminal antennomeres. Prosternum fairly elongate in front of coxae; prosternal process narrow, parallel sided without carinae. Hind wings with large anal lobe. Elytra irregularly punctate, with epipleuron wide and complete to apex, frequently with foveae for receiving apices of femora. Abdomen with five or six ventrites; postcoxal lines at abdominal ventrite 1 variable, without associated pits and pores. Male genitalia with symmetrical tegmen, penis guide sometimes asymmetrical; parameres well developed, apically setose; penis a simple, single sclerite with sizeable basal capsule. Coxites triangular and faintly sclerotized, usually without styli; bursa copulatrix with infundibulum or fleshy lobe, with sperm duct composed of two parts of different diameter; spermatheca bean-shaped, sclerotised without well differentiated nodulus or ramus, with large accessory gland (after Ślipiński 2007).

Key to the Iranian species and genera of Chilocorini

Key to the Iranian species and genera of Chilocorini — A. Biranvand , W. Tomaszewska , W. Li , V. Nicolas , J. Shakarami , L. Fekrat , S. Hesami

1		Fronto-clypeal plate emarginate anteriorly (Fig. 14). Postcoxal line on abdominal ventrite 1 merging with posterior margin of ventrite or running very close to it (Fig. 15). All tibiae with tooth at outer side; tibial spurs absent (Fig. 16). Elytron brown or reddish brown with 3 small orange discal spots in transverse row, usually partially fused (Fig. 2). Male genitalia with penis guide as long as parameres (Figs 17, 18), penis as in Figs 19, 20. (Body circular, strongly convex, 3.5–4.5 mm long)     Chilocorus bipustulatus Linnaeus
–		Fronto-clypeal plate not emarginate. Postcoxal line on abdominal ventrite 1 distant from posterior margin of ventrite (Figs 21, 22). Mid-and hind tibiae smoothly arcuate; with 2 apical spurs (Fig. 23)    2
2		Antenna composed of 8 antennomeres (Fig. 24). Body yellow with two small black spots on each elytron, one behind the other (Fig. 1). Male genitalia with parameres slightly longer than penis guide (Fig. 25); penis as in Fig. 26. (Body broadly oval, 2.0–2.5 mm long)     Brumoides adenensis Fürsch
–		Antenna composed of 10 antennomeres (Figs 27, 28)    3
3		Elytra black with red spots or red-brown with or without black spots. Body size 2.8–5.0 mm     Exochomus Redtenbacher 4
–		Elytra completely black. Body size 2.2–4.5 mm     Parexochomus Barovsky 10
4		Elytra black; each elytron with two small or medium sized, separated red spots    5
–		Elytra orange to red-brown, with or without black spots, or elytra black with large pale maculae of irregular shape    6
5		Each elytron with two similar and equally-sized rounded spots (Fig. 6). Male genitalia with penis guide approximately as long as parameres (Figs 29, 31); penis as in Fig. 30. Body oval, 3.5–4.5 mm long     E. quadriguttatus Fleischer
–		Each elytron with two differently sized and shaped spots (Figs 7, 8). Male genitalia with penis guide clearly shorter than parameres (Figs 32, 33); penis as in Fig. 34. Body subcircular, 3.5–4.0 mm long     E. quadripustulatus Linnaeus
6		Background of elytra black; elytral maculae large and of irregular shape, brown or orange    7
–		Background of elytra orange to red-brown; with or without contrasting markings    8
7		Humeral part with brown macula (Fig. 9); male genitalia with penis guide longer than parameres (Fig. 35); penis as in Fig. 36. Form oblong, body length 4.3–5.0 mm     E. undulatus Weise
–		Humeral part with orange macula surrounding a black round spot (Fig. 3). Body form oblong, 3.0–5.0 mm long)     E. ericae Crotch
8		Elytra brown without markings; (Body subcircular, 3.5–4.0 mm long)     E. quadripustulatus Linnaeus
–		Each elytron with 4 nearly equally sized, small, black spots similarly distributed    9
9		Pronotum reddish orange, with a medio basal ungulate black spot (Fig. 5). Tarsal claw simple (Fig. 37). Male genitalia with penis guide as long as parameres (Fig. 38); penis as in Fig. 39. Body nearly of spindle form, 2.8–4.5 mm long     E. octosignatus Gebler
–		Pronotum entirely black except for dark bordering oflateral and anterior margins (Fig. 4).Tarsal claw with small basal tooth (Fig. 40). Male genitalia with penis guide distinctly shorter than parameres (Figs 41, 42); penis as in Fig. 43. Body subcircular, 4.0–5.0 mm long     E. gebleri Weise
10		Body pubescent    11
–		Body glabrous    12
11		Body covered with dense, moderately long setae (Fig. 13). Male genitalia with penis guide shorter than parameres (Figs 44, 45); penis as in Figs 46, 47. Body short oval to nearly circular, 2.8–2.9 mm long     P. pubescens Küster
–		Body apparently glabrous, but actually with minute sparse setae particularly at pronotum (Fig. 10). Form oblong, 2.2–2.7 mm long     P. melanocephalus Zubkov
12		Pronotum yellow (Fig. 11). Male genitalia as in Figs 48, 49, 50. Body oval and highly convex, 3.8–4.2 mm long     P. nigripennis Erichson
–		Pronotum black with yellow lateral margins (Fig. 12). Male genitalia as in Figs 51–55. Body broadly oval, moderately convex, 3.1–4.5 mm long     P. nigromaculatus Goeze

Taxon Treatment

• Biranvand, A; Tomaszewska, W; Li, W; Nicolas, V; Shakarami, J; Fekrat, L; Hesami, S; 2017: Review of the tribe Chilocorini Mulsant from Iran (Coleoptera, Coccinellidae) ZooKeys, (712): 43-68. doi

Images

Figures 1–9. Dorsal habitus of Chilocorini species. 1 Brumoides adenensis Fürsch 2 Chilocorus bipustulatus Linnaeus 3 E. ericae Crotch 4 E. gebleri Weise 5 E. octosignatus Gebler 6 E. quadriguttatus Fleischer 7, 8 E. quadripustulatus Linnaeus 9 E. undulatus Weise.  Figures 10–13. Dorsal habitus of Chilocorini species. 10 Parexochomus melanocephalus Zubkov 11 P. nigripennis Erichson 12 P. nigromaculatus Goeze 13 P. pubescens Küster.  Figures 14–20. Morphological details and male genitalia of Chilocorini species. 14–20 Chilocorus bipustulatus: 14 Head 15 Abdominal postcoxal lines 16 Leg 17 Tegmen 18 Penis guide of tegmen 19 Penis apex 20 Penis.  Figures 21–31. Morphological details and male genitalia of Chilocorini species. 21, 24–26 Brumoides adenensis: 21 Abdominal postcoxal lines 24 Antenna 25 Tegmen 26 Penis apex 22 Parexochomus pubescens: Abdominal postcoxal lines 23, 28 P. nigripennis: 23 Hind leg 28 Antenna 27 Exochomus undulatus: Antenna 29–31 E. quadriguttatus: 29 Tegmen, ventral view 31 Tegmen, lateral view 30 Penis apex.  Figures 32–39. Morphological details and male genitalia of Chilocorini species 32–34 E. quadripustulatus: 32, 33 Tegmen in ventral and lateral view 34 Penis apex 35–36 E. undulatus: 35 Tegmen, ventral view 36 Penis apex 37–39 E. octosignatus: 37 Tarsal claw 38 Tegmen, ventral view 39 Penis apex.  Figures 40–47. Morphological details and male genitalia of Chilocorini species. 40–43 E. gebleri: 40 Tarsal claw 41, 42 Tegmen in ventral and lateral view 43 Penis apex 44–47 P. pubescens: 44–45 Tegmen in ventral and lateral view 46 Tip of penis 47 Penis.  Figures 48–55. Morphological details and male genitalia of Chilocorini species. 48–50 P. nigripennis: 48 Tegmen, ventral view 49 Penis apex 50 Penis 51–55 P. nigromaculatus: 51–53 Tegmen, ventral and lateral view 54 Penis 55 Penis apex.