Tolumnia maxima Distant

Tolumnia maxima Distant

(Fig. 2 A)

Tolumnia maxima: Distant (1902) [ 3] Faun. Brit. Ind. Rh., 1: pp: 154 & 155.

Female

Measurements (mm): Head length: 2.09; width across eyes: 2.09; interocular space: 1.20; interocellar space: 0.75; preocular distance: 1.10; length of posterior head including eyes: 0.99; antennal segments lengths: I: 0.50, II: 1.05, III: 1.20, IV: 1.20 V: 1.90; pronotal length: 2.88; width across humeral angles: 6.60; scutellar length: 4.60; width: 4.20; length of abdomen: 5.0; maximum width of abdomen: 6.435; length of rostral segments: I: 0.85, II: 1.40, III: 1.0, IV: 0.85; Distance - base scutellum-apex clavus: 2.875, apex clavusapex scutellum: 1.375, apex scutellum-apex abdomen including membrane: 3.25; total body length: 12.0.

Dorsal Coloration: Head pale chocolate brown, thickly punctured with coarse black punctures and yellowish-brown irrorations which are more pronounced on clypeal lobe; eyes reddish-brown, bordered with yellowish-brown, a distinct yellowish-brown patch below eye; ocelli deep red; antennae yellowish-brown, speckled with black, base of 4th pale brownish- yellow, base of 5th segment darker; pronotum chocolate brown, coarsely punctured with black, punctures more pronounced on anterolateral and posterior area, along with broad black fascia on posterior area; anterior pronotal area with two chocolate brown callosities, impunctate; scutellum paler, thickly punctured with dark brown, base of scutellum with 5 brownish-yellow spots, apex pale, lateral area with chocolate brown fasica; clavus, corium and costa slightly fainted with black punctures, speckled with grayishblack fascia; anteriormost region of costal margin pale, levigate; connexiva alternating with black and brownishyellow fascia; hemelytral membrane hyaline.

Ventral Coloration: Labium pale brownish-yellow with black apex; head with lateral area pale brownish-yellow, scarcely punctured with black, area below 1st labial segment impunctate; area between legs paler with reddish tinge, impunctate; sternum pale brownish- yellow, with a double series of black punctures, some tinged with green; metathoracic scent gland opening black, rest concolorous; abdomen centrally pale, punctured with light brown; lateral area blackly punctured; spiracles black; connexivum with black anterior and posterior margins, and central broad pale area; VIIth abdominal segment with an elongate central black spot on disk; genital capsule light greenish, pilosed; legs pale brownish-yellow, apices of femora spotted with black, apex of tarsi, base and apices of tibiae speckled with black.

Structure

Head (Fig.2 B): Head moderately deflected, subrounded at apex; clypeal lobe slightly raised medially, marginally longer than paraclypei, later sinuous above eyes and distinctly reflexed anterolaterally; antennal segmental formula – I<II<III=IV<V; labium long, just reaching base of metacoxae, labial lengths formula – I=IV<III<II. Thorax: Pronotum (Fig.2 C) declivent, slightly raised posteriorly; anterior pronotal margin concave with subacute tubercles directed anteriad, lateral margins calloused, slightly concave medially, humeral angles prominent, subacute, posterior margin straight; scutellum beyond frena narrowed into subrounded apical lobe; connexiva well exposed at repose dorsally and ventrally with acute connexival angles; metathoracic scent gland osteolar peritreme (Fig.2 D) long, medialy concave, narrowed apically, covering more than half way to metapleural margin, evaporatorium broad, with subprominent anterior and posterior margins, covering two-third of sternite; legs with tibiae, tarsi and genital capsule pilosed with golden hairs. Abdomen: callosed medially, flattened laterally; ventral anterior and ventroposterior margin of VIIth abdominal sternite broadly concave, somewhat an inverted U-shaped (Fig.2 E); hemelytral membrane passing beyond apex of abdomen.

Female Genitalia: 1st gonococcie quadrangular; 2nd gonococcie with sinuate anterior margin; 9th paratergites broad, less wide apart, subrounded at apex, not reaching fused posterior margins of 8th paratergites; 8th paratergites triangular without any spine on posterior margins (Fig.2 F); spermatheca (Fig.2 G) with distinct distal and proximal flanges; pump region small, slightly broad, tube like, distinctly 3X shorter than thin distal spermathecal duct; bulb trapezoidal, curved and pointed at apex; proximal spermathecal duct distinctly longer than distal spermathecal duct

Material Examined

Uttarakhand: Nainital , 20. viii. 2011 - 1♀

Himachal Pradesh: Solan , 14. x. 2011 - 1♀

Distribution: Myanmar; India (Uttarakhand, Himachal Pradesh, Paschim Banga).

Remarks: This species closely resembles T. latipes in body form and general coloration, but can be easily separated from it in having five distinct small spots across base of scutellum; spermathecal bulb somewhat trapezoidal, extended downwardly with single curved process and 9th paratergites broad, not passing beyond the posterior margin of 8th paratergites. It is a new record from North India.