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Two new species of Scymnini (Coleoptera: Coccinellidae) from Karnataka, India.

Poorani J - Biodivers Data J (2015)

Bottom Line: As a result, many economically important species remain poorly characterized, or worse, unnamed.These species are externally similar to other known species and often misidentified.Horniolussororius sp. n. and Scymnus (Pullus) rajeshwariae sp. n. (Coleoptera: Coccinellidae) are described here and illustrated with notes on their biology and related species.

View Article: PubMed Central - PubMed

Affiliation: ICAR-National Bureau of Agricultural Insect Resources, P.B. No. 2491, HA Farm Post, Bellary Road, Hebbal, Bangalore 560024, India.

ABSTRACT

Background: The Scymnini (Coleoptera: Coccinellidae) of the Indian region is rich and highly speciose, with nearly 90 described species and scores of undescribed species (Poorani 2002). There is a dire need to systematically revise the genera and species of this tribe from the Indian region. Due to paucity of representative collections covering the entire region and lack of access to types, it is difficult to identify most of the Scymnini of the Indian region to species. As a result, many economically important species remain poorly characterized, or worse, unnamed.

New information: Two economically important and unique species of Scymnini (Coccinellidae) belonging to Horniolus Weise (1900) and Scymnus (Pullus) Mulsant (1846) from the Southern Indian state of Karnataka that have remained unnamed for long are treated in this paper. These species are externally similar to other known species and often misidentified. Horniolussororius sp. n. and Scymnus (Pullus) rajeshwariae sp. n. (Coleoptera: Coccinellidae) are described here and illustrated with notes on their biology and related species.

No MeSH data available.


Prosternal process
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Figure 1517367: Prosternal process

Mentions: Length: 2.50–2.90 mm; Width: 1.70–2.10 mm; TL/TW: 1.33–1.40; PL/PW: 0.52–0.58; EL/EW: 0.97–1.05; EW/PW: 1.34–1.43. Male: Body outline (Fig. 1e) elongate oval, broadest around middle of elytra, elytra apically somewhat broadly rounded to subtruncate; dorsum densely pubescent with silvery white hairs. Head dark pitchy brown to black, anterior clypeal margin slightly lighter; pronotum black except anterior and lateral margins narrowly reddish testaceous; elytra black, apical one-fourth reddish brown-testaceous. Ventral side with mouthparts, legs and abdominal ventrites dark brown to testaceous, middle of abdominal ventrite 1 and remaining areas dark pitchy brown. Head with interocular distance about 1.7x as wide as an eye; punctures dense in posterior half, slightly more widely spaced towards clypeal margin, separated by <0.5–1 diameter. Antenna 11-segmented with a distinct club. Pronotum with punctures on disc shallow, separated by 1–4 diameters, denser and more closely spaced on lateral sides, separated by <1–2 diameters. Elytra with shallowly impressed punctures, slightly larger and denser than that on pronotum, separated by 1–2 diameters on disc, slightly coarser, denser and more closely spaced around anterolateral margins, interspaces between punctures coriaceous; with a row of slightly larger punctures on either side of suture in anterior half. Prosternal process (Fig. 2a) with a pair of apically divergent carinae. Abdominal postcoxal lines (Fig. 2c) complete, broadly semicircular to boat-shaped, area enclosed densely punctate in anterior half, punctures coarser and fewer in posterior half, apical one-fourth adjacent to postcoxal line more or less smooth, devoid of punctures. Ventrite 5 with posterior margin weakly emarginate, ventrite 6 truncate. Tarsi pseudotrimerous. Tarsal claws bifid with a basal tooth (Fig. 2b). Male genitalia (Fig. 2d, e, f) with penis guide lanceolate in ventral view (Fig. 2e), parameres shorter than penis guide in lateral view (Fig. 2d), bilobate with triangular / subconical inner expansions in anterior half, inner expansion much shorter than outer, with long apical hairs reaching beyond apex of outer lobe, apices of outer lobes of parameres with much longer, denser hairs reaching beyond apex of penis guide. Penis (Fig. 2f) coiled with a prominent capsule having a distinctly longer outer arm than inner arm, penis ­­­apex membranous with a short, hook-like projection.


Two new species of Scymnini (Coleoptera: Coccinellidae) from Karnataka, India.

Poorani J - Biodivers Data J (2015)

Prosternal process
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4493668&req=5

Figure 1517367: Prosternal process
Mentions: Length: 2.50–2.90 mm; Width: 1.70–2.10 mm; TL/TW: 1.33–1.40; PL/PW: 0.52–0.58; EL/EW: 0.97–1.05; EW/PW: 1.34–1.43. Male: Body outline (Fig. 1e) elongate oval, broadest around middle of elytra, elytra apically somewhat broadly rounded to subtruncate; dorsum densely pubescent with silvery white hairs. Head dark pitchy brown to black, anterior clypeal margin slightly lighter; pronotum black except anterior and lateral margins narrowly reddish testaceous; elytra black, apical one-fourth reddish brown-testaceous. Ventral side with mouthparts, legs and abdominal ventrites dark brown to testaceous, middle of abdominal ventrite 1 and remaining areas dark pitchy brown. Head with interocular distance about 1.7x as wide as an eye; punctures dense in posterior half, slightly more widely spaced towards clypeal margin, separated by <0.5–1 diameter. Antenna 11-segmented with a distinct club. Pronotum with punctures on disc shallow, separated by 1–4 diameters, denser and more closely spaced on lateral sides, separated by <1–2 diameters. Elytra with shallowly impressed punctures, slightly larger and denser than that on pronotum, separated by 1–2 diameters on disc, slightly coarser, denser and more closely spaced around anterolateral margins, interspaces between punctures coriaceous; with a row of slightly larger punctures on either side of suture in anterior half. Prosternal process (Fig. 2a) with a pair of apically divergent carinae. Abdominal postcoxal lines (Fig. 2c) complete, broadly semicircular to boat-shaped, area enclosed densely punctate in anterior half, punctures coarser and fewer in posterior half, apical one-fourth adjacent to postcoxal line more or less smooth, devoid of punctures. Ventrite 5 with posterior margin weakly emarginate, ventrite 6 truncate. Tarsi pseudotrimerous. Tarsal claws bifid with a basal tooth (Fig. 2b). Male genitalia (Fig. 2d, e, f) with penis guide lanceolate in ventral view (Fig. 2e), parameres shorter than penis guide in lateral view (Fig. 2d), bilobate with triangular / subconical inner expansions in anterior half, inner expansion much shorter than outer, with long apical hairs reaching beyond apex of outer lobe, apices of outer lobes of parameres with much longer, denser hairs reaching beyond apex of penis guide. Penis (Fig. 2f) coiled with a prominent capsule having a distinctly longer outer arm than inner arm, penis ­­­apex membranous with a short, hook-like projection.

Bottom Line: As a result, many economically important species remain poorly characterized, or worse, unnamed.These species are externally similar to other known species and often misidentified.Horniolussororius sp. n. and Scymnus (Pullus) rajeshwariae sp. n. (Coleoptera: Coccinellidae) are described here and illustrated with notes on their biology and related species.

View Article: PubMed Central - PubMed

Affiliation: ICAR-National Bureau of Agricultural Insect Resources, P.B. No. 2491, HA Farm Post, Bellary Road, Hebbal, Bangalore 560024, India.

ABSTRACT

Background: The Scymnini (Coleoptera: Coccinellidae) of the Indian region is rich and highly speciose, with nearly 90 described species and scores of undescribed species (Poorani 2002). There is a dire need to systematically revise the genera and species of this tribe from the Indian region. Due to paucity of representative collections covering the entire region and lack of access to types, it is difficult to identify most of the Scymnini of the Indian region to species. As a result, many economically important species remain poorly characterized, or worse, unnamed.

New information: Two economically important and unique species of Scymnini (Coccinellidae) belonging to Horniolus Weise (1900) and Scymnus (Pullus) Mulsant (1846) from the Southern Indian state of Karnataka that have remained unnamed for long are treated in this paper. These species are externally similar to other known species and often misidentified. Horniolussororius sp. n. and Scymnus (Pullus) rajeshwariae sp. n. (Coleoptera: Coccinellidae) are described here and illustrated with notes on their biology and related species.

No MeSH data available.