Burmopsylla maculata, Liang, Feiyang, Zhang, Weiwei & Liu, Xingyue, 2016

Liang, Feiyang, Zhang, Weiwei & Liu, Xingyue, 2016, A new genus and species of the paraneopteran family Archipsyllidae in mid-Cretaceous amber of Myanmar, Zootaxa 4105 (5), pp. 483-490 : 485-487

Burmopsylla maculata sp. nov.

( Figs. 1–3 )

Description of holotype male. EMTG BU-001053 ( Fig. 1 ). Body length 3.63 mm (measured from frons to terminalia), and 6.25 mm (measured from fron to forewing tip). Head length from vertex to labrum apex 1.58 mm. Antenna length 7.04 mm. Forewing length 5.00 mm, width 1.4 mm; hindwing length 4.5 mm, width 1.25 mm.

Head ( Fig. 3 A) hypognathous, subtriangular. Compound eyes ovoid, distinctly bulging. Ocelli invisible. Antenna filiform, glabrous; condition of segmentation unclear due to poor preservation. Frons enlarged, clypeus not bulbed and extend, ante- and postclypeus obscured. Mouthparts specialized into an elongated type; mandibles narrowly prolonged; labial palps discernible, digitiform and slightly setose; maxillary palps invisible.

Cervical region long. Prothorax narrow and short, meso- and metathorax robust. Wing base structures invisible.

Wings ( Fig. 3 B) transparent, with several brown markings, held roof-like over abdomen, bearing numerous microsetae on wing membrane; pterostigma well developed, completely brown. Forewing narrowly elliptical, with anterior and posterior margins almost parallel; seven brown patches respectively present at base of wing, anal margin, forking point of R+M and CuA, pterostigma, near midpoint of costal margin, basally between M3 and M4, and wing apex. ScP present, emerging from base of forewing, then entering C, appearing as a crossvein-like veinlet at middle of wing, and fused with RA for a distance, and terminally separating from RA, as proximal border of pterostigma; distal part of RA straight; pterostigma subtrapezoid, posteriorly connected to RP by a short ra-rp crossvein; RP distally bifurcated; M separating into two main branches from mid part, and each branch distally bifurcated; RP connected to M by a crossvein; R+M and CuA proximally meeting at a point; CuA 2-branched; AP cell free, subtriangular; CuP simple, close and parallel to 1A; 1A and 2A simple. Hind wing with similar shape, marking pattern and venation to forewing, 2A unclear.

Legs long, with dense short setae. Fore leg length 4.00 mm, ft1= 0.35 mm, ft2= 0.20 mm, ft3= 0.15 mm, ft4= 0.20 mm; mid leg length 4.13 mm, mt1= 0.45 mm, mt2= 0.22 mm, mt3= 0.15 mm, mt4= 0.19 mm; hind leg length 5.50 mm, ht1= 0.65 mm, ht2= 0.30 mm, ht3= 0.18 mm, ht4= 0.20 mm. Pro- and mesocoxa almost cylindrical; two apical spurs present; tarsus with four tarsus; detail of pretarsus unclear.

Abdomen ( Fig. 3 D) subcylindrical; pregenital segments with proximal three segments distinctly narrower than remaining segments. Terminalia with distinct epiproct and paraprocts; paraproct with round trichobothrial field; hypandrium broad, with a small spinous projection on inner portion.

Description of paratype female. EMTG BU-001056 ( Figs. 2 A–B). Body length 4.50 mm (measured from frons to terminalia), and 7.00 mm (measured from frons to forewing tip). Length from vertex to labrum apex 1.15 mm. Antenna length 8.92 mm, f1= 1.50 mm, f2= 1.30 mm. Forewing length 6.00 mm. Fore leg length 4.33 mm, ft1= 0.60 mm, ft2= 0.32 mm, ft3= 0.15 mm, ft4= 0.20 mm; mid leg length 4.75 mm, mt1= 0.54 mm, mt2=0.28, mt3= 0.13 mm, mt4= 0.19 mm; hind leg length 6.38 mm, ht1= 0.80 mm, ht2= 0.30 mm, ht3= 0.10 mm, ht4= 0.16 mm. Length of ovipositor 1.33 mm.

External characters almost identical to male. Antenna better preserved than male, absence of the the rupturing mechanism; scape robust, subcylindrical; pedicel much smaller than scape, but much thicker than flagellum; flagellum with three segments preserved, but probably with more distal segments. Tibiae and tarsi with short setae ( Figs. 2 A–B, 3C); tarsal claws without subapical teeth, arolium present.

Abdomen ( Fig. 3 E) with pregenital segments slightly enlarged posteriad. Terminalia with distinct epiproct. Ovipositor long blade-shaped, slightly curved dorsad, with a row of teeth at tip of ventral margin.

Description of paratype female. EMTG BU-001087 ( Fig. 2 C). Body length 4.40 mm (measured from frons to terminalia), and 6.25 mm (measured from frons to forewing tip). Antenna length 8.53 mm, f1= 1.50 mm, f2= 1.30 mm. Forewing length 6.00 mm, f1= 1.12 mm, f2= 1.04 mm. fore leg length 3.90 mm, ft1= 0.47 mm, ft2= 0.25 mm, ft3= 0.16 mm, ft4= 0.20 mm; mid leg length 4.16 mm, mt1= 0.50 mm, mt2=0.28, mt3= 0.13 mm, mt4= 0.20 mm; hind leg length 5.90 mm, ht1= 0.90 mm, ht2= 0.38 mm, ht3= 0.18 mm, ht4= 0.20 mm. Length of ovipositor 0.71 mm. External characters almost identical to the above female.

Etymology. The specific epithet ‘ maculata ’ refers to the presence of distinct brown markings on the wings of the new species.

Type material. Holotype: EMTG BU-001053: amber piece preserving an almost complete adult male of B. maculata , a cricket, a beetle, a caddisfly and a midge; it is polished in the form of a flattened semi-ellipsoid cabochon, clear and transparent, with length×width about 18× 19 mm, height about 5 mm. Paratype: EMTG BU- 001056: amber piece preserving an almost complete female of B. maculata , a psocid, and two midges in the form of a flattened semi-ellipsoid cabochon, clear and transparent, with length×width about 19× 19 mm, height 5.6 mm. Paratype: EMTG BU-001087: amber piece preserving an almost complete adult female of B. maculata in the form of a flattened semi-ellipsoid cabochon, clear and transparent, with length×width about 23× 18 mm, height about 4 mm.

Figures

FIGURE 1. Burmopsylla maculata gen. et sp. nov., male. A – B. Habitus of holotype EMTG BU- 001053.

FIGURE 2. Burmopsylla maculata gen. et sp. nov., female. A – B. Habitus of paratype EMTG BU- 001056; C. Habitus of paratype EMTG BU- 001087.

FIGURE 3. Burmopsylla maculata gen. et sp. nov. A. Head of holotype EMTG BU- 001053 (cl: clyperus; fr: frons; ma: mandible; la: labrum; lb: labium; ln: lacinia; lp: labial palp); B. Fore- and hind wing of holotype EMTG BU- 001053; C. Hind tarsus and apex of hind tibia of paratype EMTG BU- 001056; D. Male teminalia of holotype EMTG BU- 001053 (ep: epiproct; pp: paraproct; hy: hypandrium); E. Female teminalia of paratype EMTG BU- 001056 (3 v: tip of third ovipositor valve; ov: ovipositor).