Macroscytus heissi, Lis, 2000

Macroscytus heissi sp. n.

(Figs 143­149)

DESCRIPTION

H e a d. Black, lateral margins brownish in shade; dorsal surface alutaceous, bearing numerous tiny and hardly visible punctures, lateral parts of paraclypei striated and punctate with small punctures; gular plate coarsely punctate in its posterior half, anterior half impunctate; bucculae with a few punctures only; clypeus free, as long as paraclypei, subapically without setigerous punctures, each paraclypeus submarginally with 7­9 setigerous punctures bearing hair­like setae (Fig. 144); eyes dark reddish brown, ocular index 2.85; ocelli reddish brown, interocellar index about 4.5, ocellar index 7.0; antennae yellowish brown; rostrum pale brown, reaching middle of mesosternum.

P r o t h o r a x. Pronotum black, posterior and lateral margins castaneous in shade; puncturation of pronotal disc well visible behind head, in lateral parts and behind calli, transverse discal impression shallow, bearing a row of punctures (Fig. 143); lateral margins of pronotum with 10­11 setigerous punctures bearing long hair­like setae (Fig. 143). Prosternal carinae low, coarsely punctate; anterior convexity of propleuron with a patch of punctures close to head margin, posterior convexity punctate with a few coarse punctures, propleural depression with a row of several coarse punctures.

M e s o t h o r a x. Scutellum black, its apex castaneous; basal and apical parts of scutellar disc impunctate, remaining surface densely punctate with numerous punctures larger than those on pronotum (Fig. 143). Mesopleural evaporatorium with longitudinal rugae, its posterior wedge­shaped polished band impunctate.

M e t a t h o r a x. Hemelytra dark castaneous, distinctly punctate; clavus with one complete and two partial rows of punctures; mesocorial disc almost evenly punctate, punctures slightly smaller than those on scutellum; exocorium with puncturation more dense than those of mesocorium; mesocorium and exocorium separated almost along their entire length; costa basally broad, almost entirely separated from exocorium, costal margin with 6 setigerous punctures bearing long hair­like setae (Fig. 143); membranal suture almost straight; membrane semihyaline, milky brown, its tip clearly surpassing the posterior extremity of abdomen. Metapleural evaporatorium without longitudinal rugae; lateral area of metapleuron impunctate, posterior area with a band of coarse punctures.

L e g s. Femora and tibiae dark castaneous, tarsi yellowish brown; dorsal margin of mid femur with a row of 10­11 sharp black teeth; hind femur basally with a row of tubercles bearing long setae, subapical denticles and teeth absent; hind tibia subbasally with large tooth (Fig. 147).

A b d o m e n. Sterna blackish brown, laterally distinctly striated and coarsely punctate, segmental sutures accompanied by rows of punctures. Ventral surface of male pygophore with small punctures, dorsal surface pilose, longitudinal sclerites on infolding of its dorsal rim well developed; penis as in Fig. 148, second conjunctival appendage as in Fig. 149, paramere as in Fig. 146, opening of genital capsule as in Fig. 145.

M e a s u r e m e n t s (in mm). Male only: body length 7.32; body width 4.45; head length 1.21; head width 1.92; pronotum length 2.34; pronotum width 4.12; scutellum length 2.83; scutellum width 2.77; antennal segments: 0.35: 0.47: 0.36: 0.44: 0.47.

TYPE MATERIAL EXAMINED

Holotype male: Kenya: N­Kenia, Umg. Nairobi, VII 1981, HEISS, collection E. HEISS, Innsbruck ( TLM) .

COMPARATIVE NOTES

This new Afrotropical species is very similar to Oriental M. nigroaeneus and Australian M. piceus , especially in its general body outline, its vestiture and puncturation. Nevertheless, it can easily be separated from the two species by characters given in the key.

DISTRIBUTION

Kenya.