Campylomma nanna, Yasunaga, Tomohide & Duwal, Ram Keshari, 2015

Yasunaga, Tomohide & Duwal, Ram Keshari, 2015, Further records and descriptions of the plant bug subfamily Phylinae (Hemiptera: Heteroptera: Miridae) from Thailand, Zootaxa 3981 (2), pp. 193-219 : 208-209

Campylomma nanna n. sp.

( Figs. 5 E, 8, 10−12)

Diagnosis. Readily recognized by its noticeably tiny size (most individuals less than 2.0 mm in total length: Fig. 5 E); narrow head ( Fig. 8 ); simple form of the endosoma ( Fig. 10−11 ); and comparatively large, rounded female sclerotized rings that are relatively contiguous to each other ( Fig. 12 ). The tiny size and unique form of the genitalia enable to distinguish this new species from other related congeners.

Description. Body generally pale green, elongate ovoid, tiny, usually less than 2.0 mm in total length; dorsal surface shining, with rather densely distributed, simple, brown, semierect setae. Head narrow, 0.5 mm in width across eyes. Antenna pale brown, not much sexually dimorphic in coloration and thickness; segment II with a narrow, obscure ring at base. Labium pale brown, short, not much exceeding apex of mesocoxa; apical half of segment IV shiny brown. Hemelytron somewhat semitransparent, or tinged with white; membrane pale grayish brown. Ventral dark spots on metafemur small. Male genitalia ( Figs. 10−11 ): Endosoma weakly sigmoid, tapered apically, with a sclerotized edge broadened subapically. Female genitalia ( Fig. 12 ): Bursa copulatrix narrow; sclerotized rings comparatively large, rounded, rather contiguous to each other.

Measurements (♂/♀): Total body length 1.8−1.9/ 1.9−2.1; length from apex of clypeus to cuneal fracture 1.19−1.28/ 1.29−1.33; width of head across eyes 0.50−0.51/ 0.49−0.51; width of vertex 0.23−0.24/ 0.24−0.26; lengths of antennal segments I-IV 0.10−0.12, 0.40−0.46, 0.24−0.27, 0.19−0.22/ 0.11−0.13, 0.40−0.42, 0.24−0.30, 0.22−0.24; mesal length of pronotum 0.26−0.29/ 0.27−0.29; basal width of pronotum 0.70−0.72/ 0.68−0.72; maximum width across hemelytron 0.81−0.84/ 0.84−0.87; and lengths of metafemur, tibia and tarsus 0.60−0.64, 0.85−0.87, 0.25−0.27/ 0.61−0.63, 0.84−0.92, 0.26−0.30.

Etymology. From Greek, nannos (= dwarf), referring to the tiny size of this new species.

Biology. This new species was found from Leucaena sp. ( Fabaceae ), together with C. lividicornis . Collection records suggest that this phyline has at least two generations per year.

Holotype ♂, THAILAND: Phranakhon-Sri-Ayutthaya: Huntra, RMUTSB Campus, 14˚22'N, 100˚36'E, flowers of Leucaena sp., 24 Oct 2008, T. Yasunaga, K. Yamada ( AMNH _PBI 00379886) ( DOA).

Paratypes: THAILAND: Phranakhon-Sri-Ayutthaya: 5♂ 8♀, same data as for holotype (003879887−00379894) ( AMNH, TYCN). Nakhon Ratchasima: 1♂ 2♀, SERS, 14˚30'27”N, 101˚55'39”E, 410 m alt., light trap, 12−14 Jun 2009, T. Yasunaga, K. Yamada (00379895−00379897) ( TYCN); 1♂ 3♀, same locality, light trap, 18−20 Mar 2010, T. Yasunaga (00379898−00379900) ( TYCN); 1♀, same locality, light trap, 13 Apr 2013, T. Yasunaga (00379901) ( TYCN); 1♂, same locality, light trap, 18 Apr 2013, T. Yasunaga & A. Wolski (00380124) ( TYCN); 4♂ 6♀, same locality, light trap, 21−24 Mar 2014, T. Yasunaga, K. Yamada ( TYCN).

Additional specimen examined. LAOS: 1♂, Vientiane: PPC, Vientiane, 11 Feb 2014, Lee, Duwal, Cho (SNU).

Figures

FIGURE 5. Habitus images of living individuals of Campylomma species. A. C. chitwanensis, male (SERS). B. C. koraticola, holotype male (SERS). C. C. livida, male (Nagasaki, Japan). D. C. lividicornis, male (Ayutthaya). E. C. nanna, female (Ayutthaya). F. C. pimai, male (Bangkok). G. Ditto, female. H. Ditto, final instar nymph.

FIGURE 8. Ventral habitus images of Thai phylines.

FIGURE 10. Male genitalia of four new Campylomma species from Thailand.

FIGURE 11. Photographic images of male genitalia for seven Campylomma species.

FIGURE 12. Photographic images of female genitalia for Thai phylines.