Contribution to the genus Filipinolotis Miyatake, 1994 (Coleoptera, Coccinellidae, Sticholotidini)

Abstract The genus Filipinolotis Miyatake has been reviewed in this study. Descriptions and illustrations of two species (F.latefasciata Miyatake and F.purpuratorotunda Wang, Zhang & Ślipiński, sp. n.) in the Luzon island of the Philippines, are given. The male genitalia of F.latefasciata are described for the first time. A key to known species is also provided.


Introduction
The family Coccnellidae is an abundant species group of beetles. Ślipiński (2007) proposed a two subfamily system with Microweiseinae and Coccinellinae, merging Sticholotidini into an expanded concept of Coccinellinae (Escalona and Ślipiński 2012). The tribe Sticholotidini was defined by Gordon (1977) and Miyatake (1994). The final composition of Sticholotidini and the taxonomic status of many genera are not fully resolved (Ślipiński 2004). Coccinellid evolutionary history is borne out in previous molecular studies (Giorgi et al. 2009;Seago et al. 2011;Robertson et al. 2015). Miyatake (1994) revised the Asian genera of the tribe Sticholotidini and proposed six new genera: Synonychimorpha, Chilocorellus, Sulcolotis, Filipinolotis, Mimoserangium, and Coelolotis for the species described from China, Philippines, and Vietnam. The genus Filipinolotis was erected with F. latefasciata Miyatake, 1994 as the type species from Luzon Island, Philippines. Filipinolotis is similar to Sticholotis except for some differences in characters of the hind wings (atrophied), antennae (shorter with distinct club), prosternal process (raised), and epipleura (broad). To date, F. latefasciata has been the only species in the genus Filipinolotis. In this paper, F. purpuratorotunda, sp. n. from Luzon Island in the Philippines is described and added to this genus.

Materials and methods
The specimens examined were collected from Luzon, Philippines. All materials were deposited at Australian National Insect Collection, CSIRO, Canberra, Australia (ANIC), South China Agricultural University, Guangzhou, China (SCAU), and Museum für Naturkunde in Berlin, Germany (MNB). External morphology was observed with a dissecting stereoscope (Zeiss Stemi 2000-cs). The following measurements were made with an ocular micrometer:

TL
total length, length from apical margin of clypeus to apex of elytra; TW=EW total width, width across both elytra at widest part; TH height, from the highest part of the beetle to elytral outer margins; HW head width in a frontal view, widest part including eyes; PL pronotal length, from the middle of anterior margin to the base of pronotum; PW pronotal width at widest part; EL elytral length, along the suture, from the apex to the base including the scutellum.
Images were taken with digital cameras (AxioCam HRc and Coolsnap-Procf & CRI Micro*Color) connected to a dissecting microscope in the Key Laboratory of Bio-Pesticide Innovation and Application, Engineering Technology Research Center of Agricultural Pest Biocontrol, Guangdong Province of South China. The software AxioVision Rel. 4.8 and Image-Pro Plus 5.1 were used to capture images from the cameras. Software Adobe Photoshop CC 2015 was used for cleaning up images.
Terminology follows Ślipiński (2007) and Ślipiński and Tomaszewska (2010). Type specimens designated in the present paper are deposited at ANIC and SCAU.
Pronotum transverse, strongly convex, emarginate at anterior margin, hind margin bent into a curved shape; lateral margin slightly oblique, with fine groove continuing towards basal corner from anterior corner, anterior angles rounded and smooth, hind angles obtuse and smooth (Figs 1a-c, 2 a-c). Scutellum minute, triangular (Figs 1a,c;2a,c). Elytra without humeral angles, strongly convex, almost as wide at anterior margin as hind margin of pronotum, lateral margins extremely narrow; lateral margins with narrow rim, invisible from above (Figs 1a-c, 2a-c). Hind wings atrophied.
Distribution. Philippines.  Figure 1 Filipinolotis latefasciata Miyatake, 1994: 255 Diagnosis. This species can be recognized by the following combination of characters: pronotum reddish yellow, elytra blackish shiny with a broad transverse reddish yellow band in the middle (Figure 1a-c); penis guide of tegmen in ventral view broad and flat, with a rounded apex, parameres narrow and almost straight with dense setae at apices (Figure 1q-r); penis uniformly tubular, curved, gradually narrowing to apex (Figure 1o-r Head reddish yellow (Figure 1c, d). Pronotum reddish yellow (Figure 1a-c). Scutellum blackish shiny (Figure 1a, c). Elytra blackish and shiny, with a broad transverse reddish yellow band at middle, covering almost half of elytra (Figure 1a-c). Underside blackish brown, except claws yellowish.
Male genitalia (Figure 1o-r). Tegmen stout and symmetrical, penis guide in lateral view wide at base and gradually narrowing to pointed apex, the basal 2/3 with membranous prominence; in ventral view broad and flat, rounded apically; parameres narrow and almost straight with dense setae at apices (Figure 1q-r), phallobase membra- nous. Penis simple tubular, curved, gradually narrowing along apical third to pointed apex, penis capsule membranous, without inner arm (Figure 1o-p).
Distribution. Philippines (Luzon). Diagnosis. This species is similar to F. latefasciata Miyatake but it can be distinguished from the latter as follows: body uniformly black with purple shine, without spots ( Color: Head, pronotum, scutellum, elytra purplish shiny black, without spots (Figure 2a-c). Underside blackish brown, except yellowish claws.
Male genitalia. Tegemen stout and symmetrical, tegminal strut stout and straight; penis guide in lateral view almost straight and gradually narrowing along apical third to pointed apex, with membranous prominence at basal half; in ventral view narrowest at base and gradually broadening to apex, then strongly narrowed to form a nipple-shaped apex; parameres with dense long setae apically, longer than penis guide; phallobase membranous (Figure 2p, q). Penis uniformly tubular, curved, basal capsule membranous, without distinct arms; apex of penis subtruncate with membranous appendage (Figure 2n, o).
Etymology. The name purpuratorotunda is composed of the word purpuratus, which refers to the purplish color of the body and rotundus, referring to the rounded body shape.