A new species of Coranus Curtis from south India (Insecta-Reduviidae-Harpactorinae)

3 Pages·1993·1.8 MB·

458 JORUNAL, BOMBAYNATURAL HIST. SOCIETY, VOL. 90 (1993)
A NEW SPECIES OF CORANUS CURTIS FROM SOUTH INDIA (INSECTA
-
REDUVIIDAE HARPACTORINAE)
- 1
Dunston P. Ambrose and K. Sahayaraj2
(With sixteen text - figures)
Distant(1902)describedsixspeciesofCoranus before middle, longitudinally impressed;
Curtis in his Fauna ofBritish India. Capriles (1990) anteriolateral angles of the pronotum obtuse and
listed six species of Coranus namely C. militaria posterolateral angels ofpronotum rounded (Figs. 1-
,
Distant; C. niger (Rambur); C. siva (Kirkaldy); C. 3). Scutellum triangular with an erect conical
spiniscutisReuter; C.vitellinusDistantand C. wolffi tubercle;fore femoraslightlyincrassaledandswollen,
Lethierry and Severin (Reduvius aegyptius Wolff) mid femora the shortestand hind femorethe longest;
from Indian faunal limits. Ambrose (1980) tarsi 3 segmented, 1st segment the shortest and 3rd
redescribed CoranusvitellinusDistantand Ambrose the longest; tibiae devoid oftibial pads butwithtibia!
& mm
Vennison(1989) described a newspeciesCoranus combs (Figs. 1, 5-7); hemelytra 4.96 long and
soosaiifromSouth India. In the present papera new 1.83 nun broad, slightly passing the abdominal
species of Coranus is described and illustrated. apex, venation of hemelytra and hind wings as in
mm
figures 1, 8 and 9. Abdomen 4.80 Song and 2.86
Coranus nodulosus sp. nov. (Figs. 1-16) nun broad, nodulose segmental sutures prominent;
elongately oval, coniiexivum narrow and spotted
Total length 8.72 mm; widthacross compound (Figs. 1,9). Last abdominal segment bears a pair of
mm
eyes 1.0 nun; across prothorax 1.94 and across conspicuous piceous spots. Genitalia as in Figs. 11-
the abdomen 2.86 nun (Fig. 1). Piceous; antennae 16.
(except4thsegment), tibiae,tarsi,brown,connexival
spots, interior corium fuscescent; head, thorax and Female has longer anteocular (1.14 111111 ) and
abdomen above and beneath bear stramienous fine postocular areas (0.89 nun), distance between the
hairs; head oblong and bulbous, 1.92 mm long and eyes (0.56 nun), antennae (4.13 nun), rostrum (2.12
1.0 mm broad; transverse behind eyes, nodulose nun), fore, mid and hind legs (1.85, 1.73 and 2.68
anteocular portion twice as long as slightly raised nun, respectively), longer abdomen (5.42 nun) and
postocular portion, ocelli one on each side located
just behind the compound eyes (Figs. 1-3); antennae
mm
3.96 long, fivesegmented antennae insertedjust
infrontofthe compound eyes,scape the shortestand
not passing the apex of the head, third flagellar
segment the longest (Figs. 1, 5); rostrum slightly
curved; basal and medial segments almostequal and
3rd segment the shortest; rostral tip touching the
prosterna groove (Fig. 4).
1
mm mm
Pronotum 2.2 long and 1.94 broad,
unicolourous, nodulose, transversely divided just
1 Accepted July 1993.
Figs. 1-2. Curiums nodulosus sp. nov.
2 Entomology Research Unit, Department ofZoology, St. Xavier’s
College, Palayankottai 627 002, India. 1. Male and 2. Female : dorsal view.
NEWDESCRIPTIONS
459
Figs. 3-11. Coranus nodttlosus sp. nov. (Male) 3. head and pronotum lateral view; 4. head and pronotum; 5. antenna; 6-8. fore, mid
:
and hind legs; 9. abdomen dorsal aspect; 10. hemelytra; 11. hind wing.
460 JORUNAL, BOMBAYNATURAL HIST. SOCIETY, VOL. VO (1993)
and paratypes (one male and two females were
)
collected from cotton fields in and around
Sivanthipatti by Sahayaraj on 25. .1990.
iii
Affinity: C. nodulosussp. nov. iscloselyrelated
to C. soosaii in having five segmented antenna and
scape and 3rd flagellar segment as the shortest and
the longestantennal segments, respectively; slightly
curved rostrum, with almost equal first and second
segments and third the shortest segment; pronotum
transversely divided before the middle; scutellum
triangular.
However, C. nodulosus sp. nov. can be easily
differentiated from C. soosaii by the slightly raised
postocular area, unicolourouspronotum, palebrown
corium and brown tibiae; oblong head, longer
Figs. 12-16. Coranus nodulosus sp. nov.
Male Genitalia: 12. pygophore-dorsal view; 13. pygophore- anteocular (twice as postocular), nodulosus head,
ventral view; 14. strut; 15. phallus and 16. parameres. prosternum and abdomen.
Etymology: The species is named C. nodulosus
hemelytra (5.68 mm) and broader abdomen (3.34 from its nodulose appearance.
mm) and hemelytra (2.10 mm).
Acknowledgements
Type information : Holotype : Male collected We aregrateful to Rev. Fr. Dr. S. Ignacimuthu,
from a cotton field at Sivanthipatti, Nellai S.J., Principal and Rev.Fr.Stephen T.de Souza, S.J.,
Kattabomman district, Tamil Nadu, India (altitude Professor & Head, Department of Zoology, St.
125.33 + 2.87 m, 8°30' N, 77°47' E) by Sahayaraj on
Xavier’s College (Autonomous), Palayankottai for
4. iii. 1990. The holotype is deposited in the Insect facilities. The financial assistance from Ministry of
collection (No. 7), Entomology Research Unit, St. Environment & Forest, New Delhi is gratefully
Xavier’s College, Palayankottai, India. Theallotype acknowledged.
References
Ambrose, D.P.(1980):Bioecology,EcophysiologyandEthologyof Capriles, J.M. (1990): Systematics catalogueofthe Reduviidaeof
Reduviids(Heteroptera)ofthescrubjunglesofTamil nadu, the World. University ofPuerto Rico, Mayaguez, P.R., pp.
India. Ph.D thesis, University of Madras.pp. 60 - 62. 179-187. (Carribean J. Science Special Edition, pp. 694).
Ambrose, D.P.&Vennison S.J.(1989):AnewspeciesofCoranus Distant,W.L.(1902):TheFaunaofBritishIndiaincludingCeylon
,
fromSouthIndia(Heteroptera-Reduviidae-Harpactorinae). and Burma, Rhynchota Vol. II (Heteroptera). Taylor and
Acta. Entomol. Bohemoslov. 86: 67-71. Francis Ltd. London, pp. 380 - 382.