Ptilocerembia senathami, Poolprasert, Pisit & Edgerly, Janice S., 2014

Poolprasert, Pisit & Edgerly, Janice S., 2014, Description of four new species of the genus Ptilocerembia Friederichs, 1923 (Embioptera: Ptilocerembiidae) from Thailand, Zootaxa 3852 (3), pp. 359-372 : 362-363

Ptilocerembia senathami sp. n.

( Figs. 2 A–2C, 6B, 7E–7H)

Material examined. Holotype male ( CUMNH), Thailand, Ratchaburi province, Pak Tho district, mixed deciduous forest, 13°16.628’N 099°29.800’E, 483 m, 04.II.2010. One paratype male, 32 paratype females ( CUMNH), same data as holotype.

Distribution. This species is known only from Pak Tho district, Ratchaburi province, Thailand.

Etymology. The new species is named to honor Mr. Yu Senatham, an environmentalist and the chief of Kao Ang Rue Nai Wildlife Sanctuary, Chachoengsao, Thailand.

Description. Alate male ( Fig. 2 A) (n = 2, mean (range)): Head width × length 1.7 (1.6–1.8) × 1.8 (1.7–1.9) mm; body length 12.5 (12.3–12.9) mm, width 2.2 (2.1–2.3) mm; forewing length 8.8 (8.8–8.9) mm; hindwing length 8.1 (7.8–8.3) mm.

Head capsule as broad as long, sides short, parallel, broadly arcuate caudally ( Fig. 7 E), dorsally dark. Eyes lavender black, narrowly outlined with dark amber. Submentum trapezoidal. Antennae 36-segmented, dark brown with six white antennal segments apically.

Prothorax basically chestnut brown but with dark mahogany pattern. Pterothorax pale tan dorsally, clouded with mahogany brown. All legs various shades of dark brown. Wing with MA forked, medium brown with metallic purple luster. All legs entirely blackish. Hind basitarsus elongate with only one papilla, plantar setae long ( Fig. 7 H).

Abdomen mottled dark purple; terminalia more darkly mottled over a basic color of chestnut brown; apices of cerci tan. 10L slightly vaulted, the vaulted area setose but basally and apically non-setose. 10LP slender; apex abruptly pointed and rugose. 10R with a strong inner margin, the medial portion (MF) bearing blunt sickle-shaped hook (EP), nodule elevated. LPPT produced as a sclerotized, sharp LPPT-P extended to LC1 ( Fig. 7 F). LC1 medium long, gradually lobed, entire inner surface coarsely echinulated. LC2 shorter, subconical, line of fusion with LC1 membranous, diagonal ( Figs. 7 F–7G).

Apterous female ( Fig. 2 B) (n = 32, mean [range] ± SD): Head width × length 1.5 (14–1.6) ± 2.23 × 1.6 (1.4–1.7) ± 1.03 mm; body length 14.0 (13.8–16.7) ± 1.43 mm, width 1.9 (1.8–2.3) ± 0.73 mm.

Head capsule about as long as broad, caudal margin broadly arcuate; sides short, parallel, glossy piceous dorsally with faint pattern; ventrally chestnut brown. Mandibles dark chestnut brown with piceous margins; other mouthparts various shades of chestnut brown. Submentum trapezoidal. Antennae 29-segmented, dark with long perpendicular hairs, five most apical segments pure white.

Thorax yellowish with two longitudinal brown bars. Coxae and trochanters of all legs concolorous with thorax; femora and tibia blackish brown except for short basal and terminal yellow area.

Abdomen dark purplish brown, paler at sides and ventrally; cerci brownish but with apical segment becoming yellowish at apex. Basal two abdominal terga dark brown, tergum 3 brownish yellow region on posterior half, terga 4–6 yellowish, terga 7–10 dark brown.

Figures

FIGURE 2. Ptilocerembia senathami sp. n. (A) male, (B) female and (C) silk gallery. Silk is as described for Fig. 1.

FIGURE 7. Important characters of male Ptilocerembia thaidina sp. n. (A – D), P. senathami sp. n. (E – H) P. catherinae sp. n. (I – L) and P. rossi sp. n. (M – P). A, E, I, M) Head. (B, F, J, N) Dorsal views of terminalia. (C, G, K, O) Ventral views of terminalia. (D, H, L, P) Hind basitarsus.