Tachytatus prolixicornis Bergroth, 1918

Varga, Katinka & Kondorosy, ElĘd, 2014, Revision of the genus Tachytatus (Heteroptera: Lygaeoidea: Rhyparochromidae), Acta Entomologica Musei Nationalis Pragae 54 (1), pp. 99-108 : 102-103

Tachytatus prolixicornis Bergroth, 1918

( Figs 1–3, 5 , 10–11 )

Tachytatus prolixicornis Bergroth, 1918: 76 . SYNTYPES: ‘ Luzon, Laguna, Los Baños, Mount Maquiling and Mount Banahao ; Tayabas, Malinao; Mindanao, Davao.’

Tachytatus prolixicornis: SLATER (1964) : 1056 (catalogue, in Ozophorini ).

Type material. LECTOTYPE: ♀ (here designated), ‘ Mt. Makiling / Luzon, Baker // (hw) Tachytatus / prolixicornis / Bergr.’ // (label with red margin) Lectotypus (hw): ‘ Tachytatus prolixicornis Bergroth, 1918 / desig. Kondorosy, 2013’ ( NHRS). Par al ect ot ype: J, ‘Mt. Makiling / Luzon, Baker // (hw) prolixicornis B. / (pr) det. Bergr. // (hw): Tachytatus / prolixicornis / Bergr.’ // (label with red margin) ‘ Paralectotypus (hw): Tachytatus prolixicornis Bergroth, 1918 / desig. Kondorosy, 2013’ ( HNHM). Nu,ber, sex and location of other syntypes is unknown

Additional material. PHILIPPINES: LUZON: Laguna, Mt. Makiling , 13.–18.xi.1992, H.Zettel lgt. (1 J, NHMW) ; N-Luzon, Ifugao Banaue, vic. Secundärwald [= secondary forests], Reisfelder [= rice ¿elds], 16°54ƍN 121°06ƍE, 22.ix.–16.x.1988, 1200 m a.s.l., Cerny & Schintlmeister lgt. (2 JJ 2 ♀♀, MFNB) . MALAYSIA: SABAH: K. Kinabalu , 31.iii.1969, P. J. L. Roche lgt. (1 ♀, RMNH) ; Quoin Hill , 15.–22.iv.1973, K. M. Guichard lgt. (1 ♀, RMNH) . INDONESIA: SUMATRA: Sumatra W., Aceh Selatan prov., Babahrot , 100 m a.s.l., 28.vi.[without year], Klapperich lgt. (1 ♀, TLMF) .

Redescription. Diagnosis. Body with very ¿ne decumbent pilosity, head, scutellum and anterior (inner) surface of fore femora with long erect hairs. Labium short, not surpassing middle of prosternum. Fore femur with two ¿ne spines. Hairs on hind tibia much shorter than spines of the same segment, latter slightly longer than diameter of tibiae. Male paramere in dorsal and lateral aspects: see Figs 10 í11.

Colouration. Body brown, head, anterior lobe of pronotum, mesosternum, and sometimes base of scutellum darker; basal half of hemelytra and apex of scutellum paler. Corium with tiny transverse pale stripe behind clavus close to apical margin and with moderately large subapical pale spot continued in darker pruinose part reaching apical margin. Anterior margin of subapical spot directed transversely to costal margin, on costal margin subapical spot at most 1.5 times longer than dark apical part; posterior margin of the pale spot obliquely convex. Membrane mostly pale, with dark base and corial margin ( Fig. 5 ). Antenna: segments IíIII stramineous, apex brownish; segment IV dark brown, basal one-¿fth pale. Legs: fore and mid femora light honey coloured, hind femur with basal half pale stramineous, apical part brown; tibiae pale stramineous, tarsi pale, apical segment(s) brown.

Intraspecific variation. The specimen from Kinabalu has basal one-fourth of antennal segment IV pale. The specimens in NHMW and MFNB have shorter subapical corial spot with transverse hind margin. The MFNB specimens have also dark antennal segment I, brown femora and mostly dark hind tibiae. However, these specimens very probably belong to T. prolixicornis , and the male genitalia are not different from genitalia of the paralectotype.

Measurements (in mm, J ♀, n = 8). Body length: 6.50í7.85. Head length: 1.05í1.24, width: 1.05í1.28, interocular space: 0.42í0.55. Lengths of antennal segments: I 0.94í0.97, II 2.11í2.54, III 1.82í1.97, IV 2.23í2.46. Pronotum length: 1.22í1.34, width: 1.48í2.02. Scutellum length: 1.11í1.37, width: 0.77í1.08. Length of claval commissure 1.9. Length of labium 2.03í2.85, labial segments: I 0.78í1.05, II 0.64í0.86, III 0.36í0.50, IV 0.25í0.44.

Distribution. Philippines: Luzon ( Bergroth 1918), Malaysia: Kalimantan (Sabah) (new record), Indonesia: Sumatra (new record).

Figures

Figs 1–6. 1–3 – Tachytatus prolixicornis Bergroth, 1918, lectotype, female. 1 í dorsal view, 2 – lateral view, 3 – labels. 4–6 – Membrane of Tachytatus species: 4 – T. celebensis sp. nov., 5 – T. prolixicornis Bergroth, 1918, 6 – T redeii sp. nov.

Figs 10–14. Male genitalia. 10–11 – Tachytatus prolixicornis Bergroth, 1918, paramere (10 – dorsal view, 11 – lateral view).12–14 – T.celebensis sp.nov.: 12–13 – dorsal view of paramere (different aspects), 14 – pygophore.