Micronecta (Micronecta) lakimi, Chen, Ping-ping, Nieser, Nico & Lapidin, Johnny, 2015

Chen, Ping-ping, Nieser, Nico & Lapidin, Johnny, 2015, A review of Bornean Micronectidae (Hemiptera, Heteroptera, Nepomorpha) with descriptions of two new species from Sabah, Malaysia 1, ZooKeys 501, pp. 27-62 : 41-42

Taxon classification Animalia Hemiptera Micronectidae

Micronecta (Micronecta) lakimi sp. n. Figs 18, 27, 37, 38, 47, 54, 62, 70, 80, 81, 94, 99

Type material examined.

Holotype: male (body length 1.00 mm, in RMNH), MALAYSIA: Sabah, Kota Belud Dist., Crocker Range, Mahua Substation, Mahua waterfall (fig. 99), 05°47.59'N, 116°24.08'E, 1215 m. a.s.l., 21.IX. 2012, leg. P. Chen, N. Nieser & J. Lapidin, CN1281. Paratypes: same data as holotype, 7 males, 25 females; MALAYSIA: Sabah, Kota Belud Dist., Crocker Range Park, Sungai Mahua near entrance of Mahua Substation, 05°47.53'N, 116°24.19'E, 1053 m. a.s.l., 22.ix.2012, leg. P. Chen, N. Nieser & J. Lapidin, CN1283, 10 males, 3 females. (Paratypes in RMNH, NCTN, NMPC, ZCSM).

Description.

Macropterous form (Fig. 18). Generally a medium-sized (body length 2.1-2.2), rather dark grayish-brown species, without obvious markings.

Dimensions. Length: male 2.07-2.22, female 2.11-2.13; width: male 0.92-1.00 female 1.01-1.04; diatone: male 0.74-0.76, female 0.75-0.77; width of pronotum: male 0.83-0.88, female 0.84-0.88; ocular index: male 1.57-1.89, female 1.76-2.05. Body length slightly over twice maximal width (male 2.16/0.97, female 2.12/1.02). Head in dorsal view short, its median length less than half the median length of pronotum (male 0.14/0.33, female 0.15/0.36). Head narrower than pronotum, synthlipsis 1.5-1.7 times as wide as the posterior margin of an eye (male 0.35/0.23, female 0.37/0.22).

Colour. Vertex yellowish, with a small dark brown point at middle of posterior margin (raised for air intake), eyes grayish. Pronotum unicolorous, medium-brown except for a narrow yellow transverse band along posterior margin. Scutellum reddish brown. Hemelytra medium brown, clavus with a reddish stripe along the scutellar margin, pruinose area at base of embolar groove black, apical third of corium light brown, laterally with a reddish tinge. Frons medium brown, rostrum with a dark median gray marking. Thoracic and abdominal venter dull dark grayish to blackish. Legs pale yellow, anterior femur with a brownish stripe and intermediate tarsus I with a small black spot distally.

Pronotum well developed, dorsally convex with lateral margins distinctly truncate (Fig. 18), about 2.5 times as wide as long (W/L male 0.85/0.34, female 0.87/0.36). Hemelytra (Fig. 27) smooth, beset with small, distinct spinules, most notably on corium. Spines laterally on abdominal segments: V with three short and one long spine; VI with two short and two long spines; VII with two short and two long spines; VIII with four or five short spines and two long hair–like bristles.

Legs. Length of leg segments: fore leg: male: femur 0.27, tibia 0.13, pala 0.14; female: femur 0.26, tibiotarsus 0.26; middle leg: male: femur 0.66, tibia 0.20, tarsus 0.37, claw 0.21; female: femur 0.65, tibia 0.23, tarsus 0.36, claw 0.21; hind leg: male: femur 0.49, tibia 0.35, tarsus I 0.38, tarsus II 0.16, claw 0.10; female: femur 0.46, tibia 0.38, tarsus I 0.38, tarsus II 0.16, claw 0.10. Palm of pala with about 14 bristles in upper row and about 17 in lower row.

Male. Fore femur (Fig. 37) with a pair of pegs on proximal third and one peg dorsodistally; tibia without dorsoapical peg; pala with three comparatively short dorsal hairs. Claw simple, dilated distally (Fig. 38). Dorsum of abdomen: prestrigilar flap (Fig. 47) with a elongate, weakly acute apex; strigil comparatively large, comb (Fig. 54) narrow, with about 75 teeth; free lobe of left part of tergite VIII (Fig. 70) with a somewhat sinuate apex with about 30 bristles. Left paramere (Fig. 81) with a wide, roughly parallel-sided shaft, apex abruptly narrowed; right paramere (Fig. 80) with a medium-sized shaft and an expanded apex with a short finger–like projection; basal lobe well developed, with 25 stridulatory ridges. Mediocaudal lobe of sternite VII (Fig. 62) with four bristles.

Female. General arrangement of bristles on fore femur is the same as in male. The seminal capsule of spermatheca mushroom–shaped (Fig. 94).

Comparative notes.

The right paramere is apically somewhat similar to that of Micronecta ornitheia Nieser et al., 2005 from Yunnan, China. However, the shaft of the right paramere of Micronecta orniteia is narrower, the left paramere is apically truncate; and it is a smaller species; body length of Micronecta orniteia is 1.7-1.9, body length of Micronecta lakimi is 2.1-2.2.

Etymology.

The species is named after Dr. Maklarin Lakim for his great service organizing the joint expedition to Sabah Parks in 2012, and his various activities in support of biodiversity exploration in Sabah Parks.

Habitat.

The type series was collected downstream of Mahua waterfall, at the edge of the stream with a slow current (Fig. 99).

Distribution.

Malaysia: Sabah (this paper).