Micronecta (Micronecta) fulvopicta, Tran, 2021

Ha, Tuyet Ngan & Tran, Anh Duc, 2021, Taxonomy of Micronectidae (Heteroptera: Nepomorpha) from Vietnam, with descriptions of 11 new species, European Journal of Taxonomy 756, pp. 1-82 : 36-38

Micronecta (Micronecta) fulvopicta sp. nov.

urn:lsid:zoobank.org:act:B05FC9D1-ACE2-48C9-AFC0-A2C14AA8C34B

Figs 5H , 10

Diagnosis

Body length 1.6–2.0. Pronotum: longer than median head length; with two transverse dark marks anteriorly. Hemelytron punctate, with distinct large dark marks.

Males: fore femur with two spines on proximal third ventrally, one spine on distal third dorsally, one pair of spines distally, one long seta dorsodistally; fore tibia without spine; palar claw distally widened, apical margin rounded ( Fig. 10A ). Median lobe of sternite VII short, with acute apex and four long setae ( Fig. 10C ). Free lobe sub-rectangular, mesial angle rounded, lateral angle square, with ca 10 long setae, posterior margin slightly concave ( Fig. 10D ). Left paramere: shaft broad, flat, distal part straight; apex narrowly rounded; basal lobe large, sub-rectangular ( Fig. 10F ). Right paramere: shaft parallel sided, strongly bent (at angle of nearly 90°) at distal fourth, apex rounded; pars stridens processus with ca 20 ridges ( Fig. 10E ).

Etymology

The species epithet refers to the yellowish brown, tawny markings on the dorsum.

Material examined

Holotype

VIETNAM • ♂; Thanh Hoa Prov., Pu Hu Nature Reserve, Quan Hoa, Hien Chung , Ban Pheo , Ham stream; 9 Apr. 2013; T.D. Pham leg.; PH1303 ; ZVNU.

Paratypes

VIETNAM – Thanh Hoa Prov. • 7 ♂♂, 6 ♀♀; same locality data as for holotype; ZVNU • 3 ♂♂, 3 ♀♀; same locality data as for holotype; NHMW . – Ha Giang Prov. • 2 ♂♂; Bac Quang, km 13 road 177, Tan Lap commune, waterfall and stream, ca 86 km to Coc Pai town; 10 May 2014; A.D. Tran et al. leg.; TAD1410 ; ZRC . – Cao Bang Prov. • 2 ♀♀; Bao Lac, Hung Dao commune, Nhi Ao River , near Nam Xui bridge; 20 Dec. 2013; A.D. Tran et al. leg.; TAD1380 ; ZVNU . – Nghe An Prov. • 1 ♂, 3 ♀♀; Pu Mat N.P. , Khe Kem waterfall and stream , site #1; 18 Apr. 2013; A.D. Tran et al. leg.; TAD1310 ; ZVNU .

Description

COLOUR ( Fig. 5H ). Dorsum generally brownish yellow. Frons and vertex light yellow, eyes dark reddish brown. Pronotum yellowish with a pair of transverse brownish marks anteriorly. Clavus bordered by dark brown mark, becoming thicker at anterior margin. Corium with a large irregular-shaped brown mark on middle part. Embolium and membrane transculent. Venter of thorax and abdomen, and legs pale brownish yellow.

Structural characteristics

MACROPTEROUS MALES. Body length 1.63–1.75 (holotype: 1.75), width 1.0–1.13 (holotype: 1.05). Head width 0.64–0.70 (holotype: 0.68). Pronotum slightly wider than head. Pronotum short, about four times as wide as long (0.71: 0.18). Synthlipsis 1.5 times as wide as posterior width of an eye (0.32: 0.21). Lengths of segments: fore leg: femur 0.23, tibia 0.14, pala 0.14; middle leg: femur 0.65, tibia 0.20, tarsus 0.32, claw 0.16; hind leg: femur 0.43, tibia 0.32, tarsus I 0.34, tarsus II 0.16, claw 0.03. Prestrigilar flap on segment V with prolonged apex ( Fig. 10B ). Strigil present. Median lobe of sternite VII, free lobe, and parameres as in diagnosis.

MACROPTEROUS FEMALES. Body length 1.63–2.0, width 0.94–1.19. Head width 0.67–0.72. Pronotum short, about four times as wide as long (0.66:0.16). Head slightly wider than pronotum. Synthlipsis 1.5 times as wide as posterior width of an eye (0.31: 0.20). Lengths of segments. fore leg: femur 0.23, tibiotarsus 0.23; middle leg: femur 0.59, tibia 0.22, tarsus 0.30, claw 0.16; hind leg: femur 0.40, tibia 0.32, tarsus I 0.32, tarsus II 0.15, claw 0.03.

Distribution

Northern Vietnam: Ha Giang, Cao Bang, Thanh Hoa, Nghe An.

Remarks

See Remarks under M. acuminata sp. nov.

Figures

Fig. 5. Habitus photos of species of Micronecta Kirkaldy, 1897, ♂♂. A. M. grisea (Fieber, 1844) (ZRC). B. M. guttatostriata Lundblad, 1933 (ZVNU). C. M. drepani Nieser, 2000 (ZVNU). D. M. erythra Nieser, Chen & Yang, 2005, right hemelytron (ZVNU). E. M. cultellata sp. nov., holotype (ZVNU). F. M. anatolica Lindberg, 1922 (ZVNU). G. M. arcuata sp. nov., holotype (ZVNU). H. M. fulvopicta sp. nov., holotype (ZVNU). I. M. acuminata sp. nov., holotype (ZVNU), right hemelytron and genitalia dissected. J–L. M. vietnamica sp. nov., J = holotype (ZVNU). All to the same scale.

Fig. 10. Morphological features of Micronecta fulvopicta sp. nov., ♂, paratype (ZVNU). A. Fore leg. B. Prestrigilar flap. C. Median lobe of sternite VII. D. Free lobe. E. Right paramere. F. Left paramere.