Blaena Walker 1868
Creators: name: LIS, Jerzy A.
name: HEYNA, Joanna
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cydnidae
Blaena

description: Key to the species of Blaena
1. Hemelytra conspicuously shortened, membrane strongly reduced (Figs 29, 97)............................ 2 - Hemelytra normally developed, membrane large (Figs 19, 28, 33, 49, 58, 68, 79, 98) ........................... 3
2. Small species, body length not exceeding 3.0 mm; membrane strongly reduced, narrow (Fig. 97); lateral margins of pronotum with 5—6 submarginal setigerous punctures bearing hair-like setae..................... B. tamasi J.A. Lis - Large species, body length exceeding 3.0 mm (3,55—4,20); membrane large, flap-like (Fig. 29); lateral margins of pronotum with 8—10 submarginal setigerous punctures bearing hair-like setae........................ B. hirta sp. n.
3. Pronotum strongly and broadly constricted in the middle (Fig. 19, 21)..................... B. coarctata Froeschner - Pronotal margins straight or only slightly sinuate in the middle ............................................. 4
4. Lateral margins of pronotum not serrated (Figs 2, 11, 42, 49, 51, 58, 62, 79, 83), or with 1—2 projections (Figs 33, 35, 91) ............................................. 5 - Lateral margins of pronotum strongly serrated, with numerous (4—11) small sharp denticles (Figs 28, 31, 68, 71, 98, 101) ............................................ 12
5. Costal margin without setigerous punctures bearing hair-like setae; paraclypei forming a strong, irregular ridge on either side of clypeus................................. 6 - Costal margin with 4–17 setigerous punctures bearing hair-like setae; paraclypei without irregular ridge on either side of clypeus....................................... 7
6. Lateral margins of pronotum strongly explanate, each bearing 2 submarginal setigerous punctures, one on anterior lobe, one on the prebasal projection of posterior lobe (Figs 33, 35); median carina on pronotum and scutellum well-developed, convex and impunctate (Fig. 33); scutellum with deep lateral impression on either side of carina, and clear elevated tuberosity anteriorly; small species (4.70–5.20 mm in length)............... B. mediocarinata Froeschner - Lateral margins of pronotum not explanate, each bearing 5–6 submarginal setigerous punctures, 4–5 on anterior lobe, one on the small prebasal projection of posterior lobe (Fig. 91); median carina on pronotum and scutellum hardly visible or absent; scutellum with shallow lateral impression on either side of carina, and lacking tuberosity anteriorly; large species (5.75–6.30 mm in length).. B. subsulcata Froeschner
7. Furrow along lateral margins of abdominal sterna deep and conspicuous; body margins with less numerous setigerous punctures bearing long hair-like setae (head 3, pronotum 9–13, costal margin 4–6)............. B. setosa Walker - Furrow along lateral margins of abdominal sterna shallow, hardly visible or totally absent; body margins with more numerous setigerous punctures bearing long hair-like setae (head 4–6, pronotum 15–23, costal margin 7–17)...... 8
8. Prosternal carinae distinct and high, their apical parts forming conspicuously delimited ridges, rostral trough as deep as height of the 2nd segment of rostrum............... 9 - Prosternal carinae vague or only slightly elevated, their apical parts not forming conspicuously delimited ridges, rostral trough shallow................................ 10
9. Prosternal carinae densely covered with short woolly hairs; male posterior femur with a row of short spines, male posterior tibia strongly recurved apically (Fig. 52)........................................ B. parathroposa sp. n. - Prosternal carinae bare or with single short hairs; male posterior femur with 3–4 strong spines, male posterior tibia almost straight apically (Fig. 41)............................................... B. multitricha Froeschner
10. Prosternal carinae, as well as anterior margins of propleura bearing numerous golden woolly hairs; male hind femur with a row of strong spines, among these at least one clearly larger than the others (Fig. 12)...... B. cirra Froeschner - Prosternal carinae, as well as anterior margins of propleura bare or bearing a few hardly visible hairs; male hind femur with a row of similar sized spines (Fig. 61)......... 11
11. Male middle femur with a row of acute tubercles on posteroventral margin; male hind tibia ventrally with a row of tubercles on each margin (Fig. 3)............................................. B. blothroposa Froeschner - Male middle femur with a row of strong, large spines on posteroventral margin (Fig. 60); male hind tibia ventrally with a row of large and sharp, apically downcurved spines on each margin (Figs 58, 61)............ B. pseudosetosa sp. n.
12. 2nd antennal segment longer than the 1st segment; body surface without woolly hairs; females with small spines on femora II and III; costal margin with 10—13 setigerous punctures bearing hair-like setae............ B. serrata sp. n. - 2nd antennal segment decidedly shorter than the 1st segment; body surface bearing woolly hairs; females without spines on femora; costal margin without setigerous punctures.... ............................................ 13
13. Lateral margins of pronotum with 8—10 denticles with setigerous punctures bearing long setae; large species, body length clearly exceeding 3.0 mm......... B. hirta sp. n. - Lateral margins of pronotum with 5—6 denticles with setigerous punctures bearing long setae; small species, body length not exceeding 3.0 mm......... B. tamasi J.A. Lis
description: Published as part of LIS, Jerzy A. & HEYNA, Joanna, 2001, Revision of the Australian genus Blaena (Heteroptera: Cydnidae), pp. 321-350 in European Journal of Entomology 98 (3) on pages 47-50, DOI: 10.14411/eje.2001.055, http://zenodo.org/record/15374535