Chilocoris malickyi, Lis, 2001

Chilocoris malickyi n. sp.

(Figs 5-7)

ETYMOLOGY Named after a collector’s name.

DIAGNOSIS Ch. malickyi n. sp. has an isolated position within the subgenus Statanus DIST. , because of its bicolorous corium (basally yellowish brown, remaining surface castaneous). In general habitus and body vestiture the new species is at first sight similar to Ch. vanstallei J.A. LIS (Sulawesi), but can easily be separated from the latter by its larger body ( Ch. malickyi – 5.20 mm in length; Ch. vanstallei – 3.05-3.95 mm in length), and bicolorous corium (corium, as well as entire dorsal body surface is uniformly castaneous or dark castaneous in Ch. vanstallei).

DESCRIPTION

B o d y. Dorsal and ventral surface almost entirely castaneous; antennae, tibiae and basal part of corium yellowish brown; eyes, rostrum and femora whitish yellow.

H e a d. Dorsally alutaceous, slightly polished, its posterior part with several irregularly scattered large punctures (Fig. 5); clypeus as long as paraclypei, almost parallel-sided, apically slightly narrowed, its surface with transverse rugae; clypeal apex with a pair of dark brown sharply ended pegs, each paraclypeus with submarginal row of 9 setigerous punctures (6 pegs and 3 hair-like setae) (Fig. 5); eyes large, ocular index 1.93; ocelli yellowish brown, ocellar index 3.3, interocellar distance about 7-8 times larger than distance between ocellus and eye; antennae paler than head, 2 nd segment minute; rostrum reaching anterior coxae.

P r o t h o r a x. Pronotal disc divided into two distinct lobes by uninterrupted transverse impressed dark line behind calli, that is accompanied by a few dark punctures (Fig. 6); anterior lobe almost impunctate, bearing only a few dark punctures laterally and single punctures forming short longitudinal median row close to head; posterior lobe with numerous distinct dark punctures; lateral margins with 3 setigerous punctures bearing long hair-like setae. Propleuron yellowish brown, polished; anterior and posterior convexities impunctate, median depression with a row of dark punctures close to coxae.

M e s o t h o r a x. Scutellum with numerous dark punctures, clearly larger than those on pronotum (Fig. 7); basal and lateral rows of punctures clearly developed, lateral ones not reaching scutellar apex. Corium bicolorous, its basal part yellowish brown, remaining surface castaneous; clavus with two rows of darker punctures; mesocorium with two rows of darker punctures paralleling clavo-corial suture, punctures in the inner row connected by incised line; mesocorial disc basally almost impunctate, but apically densely punctate with dark punctures smaller than those on scutellum; costal margins dark brown, costa basally slightly broadened, bearing no setigerous punctures; membrane translucent, almost colourless, large, clearly surpassing the tip of abdomen. Mesopleuron with evaporatorium typical of the genus.

M e t a t h o r a x. Metapleuron with evaporatorium and peritreme typical of the genus.

L e g s. Femora whitish yellow; tibiae darker, yellowish brown, bearing dark brown spines; posterior tibiae somewhat flattened.

A b d o m e n. Sterna dark castaneous, impunctate, somewhat alutaceous, laterally with numerous small punctures bearing short light hair-like bristles.

Measurements (in mm) (female only): body length 5.20; body width 2.81; head length 0.81; head width 1.08; pronotum length 1.60; pronotum width 2.68; scutellum length 1.39; scutellum width 1.71; antennal segments: 0.22: 0.11: 0.36: 0.38: 0.44.

TYPE MATERIAL Holotype female: Thailand, Chiang Mai, Zoo , 22-29.VII.1990, leg. MALICKY, Zool. Staatsaml. München (in the collection of Zoologische Staatssamlung München, Germany) .

REMARKS The new species can be easily distinguished from other species of the subgenus known from Thailand so far, since it is the largest one and the only species with bicolorous corium (yellowish brown basally, with remaining surface castaneous).