Peritropis thailandica Gorczyca, 2006

Kim, Junggon, Taszakowski, Artur, Keetapithchayakul, Tosaphol Saetung, Phan, Quoc Toan & Jung, Sunghoon, 2025, Note on the genus Peritropis Uhler (Hemiptera: Miridae: Cylapinae), with descriptions of two new species from the Indochina Peninsula, Zootaxa 5673 (3), pp. 411-423 : 419-420

Peritropis thailandica Gorczyca, 2006

( Fig. 4 )

Peritropis thailandica Gorczyca 2006: 420 ; Liu et al. 2022: 268 (questionable).

Diagnosis. Recognized by the dorsum mostly fuscous with pale markings, covered with very short setae; mostly pale brown; first antennal segment mostly pale brown, tinged with red ventrally, subequal to vertex width; second antennal segment with a dark stripe, slightly clavate; third segment subequal to fourth segment; pronotum brown to dark brown, lateral margins dark brown; scutellum dark brown with apex pale; corium mostly dark brown; cuneus brown tinged with red, dark marking at inner part; legs dark brown; fore tibia pale brown with four dark markings, including dark base and apex; middle and hind tibiae with two dark brown rings.

Description. See Gorczyca (2006) for original description.As third and fourth antennal segments were unavailable in the original description, we herein describe the antennae and genitalia. FEMALE: Coloration: antennae partly pale brown and dark brown; first segments mostly pale brown with dark marking basally, tinged with red ventrally; second segment mostly pale brown with dark lateral stripe, dark spots at middle; third and fourth segment dark brown. Vestiture and surface: first antennal segment with pair of erect spines; other segments covered with short setae. Structure: antennae shorter than body length; first segment linear, thickest, subequal to vertex width, and third segment, respectively, longer than 1/3 the length of second segment; second segment slightly clavate, rounded, longer than combined length of third and fourth segments; third segment subequal to fourth segment; proportion of first to fourth antennal segments 0.34: 0.90: 0.34: 0.37. Genitalia: not examined. MALE: Unknown.

Measurements (in mm). See Table 1 .

Biology. This species was collected from the trunk surface of a dead tree. However, no visible fungi or other microorganisms were detected on the surface by naked eye observation. This species was found together with P. andrzeji sp. nov. on the same tree ( Fig. 4 ).

Distribution. Vietnam (Central) *, Thailand.

Material examined. [ ZMUC] Holotype: 1♀, Doi Suthep-Pui, Konthathan National Park, waterfall area 600 m, Thailand, 20-27. x.1979 ( Fig. 4D ); [ ZCDTU] 1♀, Hoa Trung Lake (16.0891°N, 108.0425°E, 90 m altitude), Hoa Lien Ward, Hoa Vang District , Da Nang City, Vietnam, 6.ii.2025, J. Kim leg. (DTUHHM0049).

Discussion. Only a relatively small numbers of specimens of Peritropis thailandica are known, yet its distribution range may be wide. According to Gorczyca (2006), this species was first described from northern Thailand. The fact that it has also been reported in central Vietnam (specifically in Da Nang) suggests a broad distribution across the Indochina Peninsula, spanning both the West (Chiang Mai, Thailand) and the East (Da Nang, Vietnam). Chiang Mai, located in the northern part of Thailand, is a highland area with a mixed tropical and temperate environment, whereas Da Nang is a coastal region in central Vietnam, characterized by a tropical monsoon climate, consistently high humidity, and lowland evergreen forests, which contrasts with the cooler, montane environment of Chiang Mai. Despite these environmental differences, the occurrence of P. thailandica in both regions suggests that the species may have a much broader distribution.

Although a record of P. thailandica was recently added for China ( Liu et al. 2022), based on the description and the plate illustration (p. 268 and fig. 165 in Liu et al. (2022)), it seems that a different species may have been mistakenly identified. Therefore, in this paper, we have only recognized the distribution of this species in Thailand and Vietnam.

Figures

FIGURE 4. Habitus of Peritropis thailandica. A: female in dorsal view; B: ditto, in ventral view; C: ditto, in lateral view; D: holotype specimen. Scale bar: 1 mm.